ORCID Profile
0000-0001-9337-5095
Current Organisation
University of Adelaide
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Research Topics
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Top 5 Research Topics
ANZSRC Field of Research (FoR)
Mechanical Engineering | Solid Mechanics | Theoretical and Applied Mechanics | Resources Engineering and Extractive Metallurgy | Petroleum and Reservoir Engineering | Structural Engineering | Numerical Modelling and Mechanical Characterisation | Ship And Platform Structures | Functional Materials | Geomechanics and Resources Geotechnical Engineering | Materials Engineering | Metals and Alloy Materials | Petroleum And Reservoir Engineering | Natural Resource Management | Mechanical Engineering | Composite and Hybrid Materials | Infrastructure Engineering and Asset Management | Statistical Mechanics | Construction Materials | Environmental Engineering Modelling | Environmental Engineering | Environmental Technologies | Civil Engineering | Aerospace Materials | Dynamics, Vibration and Vibration Control | Carbon Sequestration Science | Approximation Theory and Asymptotic Methods | Aerospace Structures | Marine Engineering
ANZSRC Socio-Economic Objective (SEO)
Expanding Knowledge in Engineering | Expanding Knowledge in Technology | Air Force | Oil and gas | Air Force | Navy | Aerospace equipment | Oil Shale and Tar Sands Mining and Extraction | Climate change | Geothermal Energy Extraction | Oil and Gas Extraction | Energy Transmission and Distribution (excl. Hydrogen) | Energy Storage (excl. Hydrogen) | Construction Materials Performance and Processes not elsewhere classified | Rail Safety | Technological and organisational innovation | Other | Land and water management | Metals (e.g. Composites, Coatings, Bonding) | Coal—electricity | Expanding Knowledge in the Earth Sciences | Expanding Knowledge in the Physical Sciences | Scientific Instruments |
Related Links
Publications
Energy-wave approach in the mechanics of brittle dynamic fracture
Publisher: Springer Science and Business Media LLC
Date: 03-1994
DOI: 10.1007/BF02369186
Surface Strain Measurements Using a 3D Scanning Laser Vibrometer
Publisher: Springer Science and Business Media LLC
Date: 06-10-2011
Elastic properties of porous media in the vicinity of the percolation limit
Publisher: Elsevier BV
Date: 08-2011
A method for obtaining approximate solutions for highly dynamic problems
Publisher: Elsevier BV
Date: 03-2001
Experimental apparatus for thermal shock fatigue investigations
Publisher: Elsevier BV
Date: 06-2000
Overview of three-dimensional linear-elastic fracture mechanics
Publisher: Springer Science and Business Media LLC
Date: 26-03-2021
Effect of residual opening on the inflow performance of a hydraulic fracture
Publisher: Elsevier BV
Date: 2014
Finite element prediction of acoustoelastic effect associated with Lamb wave propagation in pre-stressed plates
Publisher: IOP Publishing
Date: 30-07-2019
Transverse singular effects in V-shaped notches stressed in mode II
Publisher: Springer Science and Business Media LLC
Date: 12-02-2010
Stress singularities resulting from various boundary conditions in angular corners of plates of arbitrary thickness in extension
Publisher: Elsevier BV
Date: 08-2006
Reconstruction of baseline time-trace under changing environmental and operational conditions
Publisher: IOP Publishing
Date: 22-02-2016
Quantification of residual stresses in multi-pass welds using neutron diffraction
Publisher: Elsevier BV
Date: 12-2015
Defects evaluation near edges of structural elements using the fundamental mode of edge waves
Publisher: Elsevier BV
Date: 08-2023
Characterization of thermal damage in graphene mortar materials using High-order sideband generation of Amplitude-modulation Vibro-acoustic technique
Publisher: Elsevier BV
Date: 06-2023
Application of Refined Plate Theory to Fracture and Fatigue
Publisher: BENTHAM SCIENCE PUBLISHERS
Date: 24-03-2012
Effect of material properties on stresses at the restoration–dentin interface of composite restorations during polymerization
Publisher: Elsevier BV
Date: 10-2006
DOI: 10.1016/J.DENTAL.2005.10.005
Abstract: Numerous analyses for the shrinkage stress in the adhesive resin-based composite restorations mostly rely on numerical models. However, various finite element studies have inherent difficulties and inconsistencies associated with the use of different anatomy (tooth and restoration), boundary conditions (root and interfaces) and shrinkage models. As a consequence many numerical results remain inconclusive. The objective of this paper is to develop a simplified analytical model of shrinkage stress and investigate effects of material properties of the restorative material, size of the restoration and volumetric shrinkage on the magnitude of the shrinkage stress in the vicinity of the dental-restoration interface. The model is based on the following assumptions. The geometry is axisymmetric all materials are linear-elastic and the polymerization of the restoration material results in uniform volume shrinkage. An application of compatibility conditions leads to the system of five linear algebraic equations to five unknown variables, which can be easily resolved using standard techniques. An explicit equation for the tensile stress at the interface was obtained. It was shown that higher Young's modulus, Poisson's ratio and volume shrinkage of the restorative material normally lead to larger tensile stress at the interface, which increases the risk of debonding. The results obtained based in this work, in general, are in a good agreement with published results of finite element studies. The model allows comparison of different adhesive restorative materials with respect to the fracture risk of the interface induced by the development of the shrinkage stress at the restoration-dentine interface during polymerization. The model can be used to validate more sophisticated computational models as well as to conduct various optimization studies and preliminary assessments of fracture risk.
On Scale Effect in Plates Weakened by Rounded V-Notches and Subjected to In-Plane Shear Loading
Publisher: Springer Science and Business Media LLC
Date: 18-12-2012
Generation of higher harmonics with the fundamental edge wave mode
Publisher: AIP Publishing
Date: 09-03-2020
DOI: 10.1063/1.5142416
Abstract: The measurement and evaluation of nonlinear elastic properties represents a great interest in materials science and engineering. These measurements can be conducted using the internal resonance of higher harmonics generated with ultrasonic bulk, Rayleigh, and Lamb waves. However, these waves are spatially dispersive, making the evaluation very difficult. In this paper, we present the outcomes of an experimental study on the generation of higher harmonics with the fundamental mode of edge waves. This wave mode—an analog of the Rayleigh wave—propagates along the apex of an elastic plate, where the lateral plate surfaces naturally avoid spatial dispersion. In addition, this mode is weakly dispersive in the frequency domain enabling approximate internal resonance, which is required for the measurement of material nonlinearities. The current experimental results indicate that the second harmonic of the fundamental edge wave mode grows linearly with the propagation distance. The linear rate of accumulation of this harmonic can then be related to the nonlinear elastic properties as procured by previous theoretical studies.
Conductivity and performance of hydraulic fractures partially filled with compressible proppant packs
Publisher: Elsevier BV
Date: 02-2015
Modelling of a Horizontal Geo Heat Exchanger with an Internal Source Term Approach
Publisher: Elsevier BV
Date: 2014
Elementary mathematical theory of thermal stresses and fracture during welding and cutting
Publisher: Elsevier BV
Date: 05-1999
Do Notched Thick Plates Have Strength in Shear?
Publisher: Trans Tech Publications, Ltd.
Date: 10-2009
DOI: 10.4028/WWW.SCIENTIFIC.NET/KEM.417-418.61
Abstract: This paper summarizes recent theoretical studies on the three-dimensional singular stress state at sharp notches in infinite (or large) plates of finite thickness subjected to in-plane loading. In general, such loading produces a number of singular states: in-plane singularities (normally described as KI and KII fracture modes and known as Williams’ solution), singular states associated with corners and the out-of-plane singularity (KO mode), which is generated due to the Poisson’s effect. The latter mode has an interesting behavior and its intensity increases as a power function with the increase of the plate thickness when the notch is stresses in shear mode. From finite fracture mechanics considerations it is clear that at some certain thickness the out-of-plane singular mode will dominate over the fracture zone and with the further increase of the plate thickness will affect the strength of the notched plate, virtually reducing it to zero.
Fatigue crack detection in edges of thin-walled structures with corners using the fundamental mode of edge waves
Publisher: Elsevier BV
Date: 07-2023
Ligand-mediated adhesive mechanics of two static, deformed spheres
Publisher: Springer Science and Business Media LLC
Date: 10-2016
DOI: 10.1140/EPJE/I2016-16095-4
Abstract: A self-consistent model is developed to investigate attachment/detachment kinetics of two static, deformable microspheres with irregular surface and coated with flexible binding ligands. The model highlights how the microscale binding kinetics of these ligands as well as the attractive/repulsive potential of the charged surface affects the macroscale static deformed configuration of the spheres. It is shown that in the limit of smooth, neutrally charged surface (i.e., the dimensionless inverse Debye length, [Formula: see text]), interacting via elastic binders (i.e., the dimensionless stiffness coefficient, [Formula: see text]) the adhesion mechanics approaches the regime of application of the JKR theory, and in this particular limit, the contact radius, R
Elastic analysis of semi-elliptical axial cracks in cylinders under thermal shock using the BS 7910 framework
Publisher: Elsevier BV
Date: 10-1999
Möglichkeiten und Ziele in der Tumornachsorge beim Mammakarzinom
Publisher: S. Karger AG
Date: 1991
DOI: 10.1159/000271776
Investigation of Thermo-Mechanical Properties of Slurry Based Thermal Barrier Coatings under Repeated Thermal Shock
Publisher: Trans Tech Publications, Ltd.
Date: 10-2009
DOI: 10.4028/WWW.SCIENTIFIC.NET/KEM.417-418.197
Abstract: Thermal Barrier Coatings have existed for over 40 years, and with in the last 15 years their use in industrial applications has dramatically increased. Thermal Barrier Coatings (TBCs) are currently used in gas turbines, diesel engines, throughout aerospace and nuclear power industries. The purpose of TBC is to reduce temperature and thermal stresses, and, as a result, increase the reliability and life of load-bearing components subjected to high temperature or temperature flux. However, TBCs often fail under thermal cyclic loading with reliability still being the major issue impeding their wide-spread applications. The focus of this work is on experimental investigations of zirconia/nickel graded TBC system, subject to thermal shock loading. The graded TBC systems were fabricated utilising a recently developed slurry spray manufacturing technique. This is a robust technique, and is able to cover large and curved surfaces at low cost, and provides many advantages in comparison with its alternatives. This paper describes the developed technique and presents selected results of thermo-mechanical and fracture testing of the TBCs including graded coatings fabricated using this new technique.
The effects of ball milling and the addition of blended elemental aluminium on the densification of TiH2 power
Publisher: Elsevier BV
Date: 04-2016
Escalation failure of pipelines
Publisher: Springer Science and Business Media LLC
Date: 12-1992
DOI: 10.1007/BF00768554
On Influence of Non-Singular Stress States on Brittle Fracture
Publisher: Springer Science and Business Media LLC
Date: 19-11-2013
Three-dimensional solutions for transversally isotropic composite plates
Publisher: Elsevier BV
Date: 07-2002
Energy wave approach to the fast brittle fracture mechanics
Publisher: Springer Science and Business Media LLC
Date: 12-1993
DOI: 10.1007/BF00015778
A fatigue crack growth model for interacting cracks in a plate of arbitrary thickness
Publisher: Wiley
Date: 18-06-2014
DOI: 10.1111/FFE.12208
A strip yield model for two collinear cracks in plates of arbitrary thickness
Publisher: Springer Science and Business Media LLC
Date: 06-06-2012
On a coupled mode at sharp notches subjected to anti-plane loading
Publisher: Elsevier BV
Date: 03-2013
Three-dimensional stress constraint in an elastic plate with a notch
Publisher: Elsevier BV
Date: 08-2002
Implication of changing loading conditions on structural health monitoring utilising guided waves
Publisher: IOP Publishing
Date: 05-01-2018
A new approach to modelling of a horizontal geo-heat exchanger with an internal source term
Publisher: Elsevier BV
Date: 02-2016
Local plastic collapse conditions for a plate weakened by two closely spaced collinear cracks
Publisher: Elsevier BV
Date: 09-2014
Mathematical Modelling and Operational Analysis of Combined Vertical–Horizontal Heat Exchanger for Shallow Geothermal Energy Application in Cooling Mode
Publisher: MDPI AG
Date: 14-12-2020
DOI: 10.3390/EN13246598
Abstract: Geothermal heat exchangers (GHEs) represent a buried pipe system, which can be utilised to harness renewable thermal energy stored in the ground to improve the efficiency of heating and cooling systems. Two basic arrangements of GHEs have been widely used: vertical and horizontal. Vertical GHEs generally have a better performance in comparison with the horizontal arrangement, and these systems are particularly suitable for confined spaces. Nevertheless, the main technical challenge associated with GHEs, for either the vertical or the horizontal arrangement, is the performance deterioration associated with an increase in the operation times during summer or winter seasons. In this paper, a combined horizontal-vertical GHE arrangement is proposed to address the current challenges. The combined GHE arrangement can be operated in five different modes, corresponding to different thermal loading conditions. These five operation modes of the combined GHE are analysed based on the transient finite difference models previously developed for the horizontal and vertical arrangements. The simulation results reveal that for the single operation mode (horizontal or vertical only), the vertical GHE performs better than the horizontal GHE due to relatively stable ground temperature deep down. While, for the combined operation mode, the series operations (horizontal to vertical or vertical to horizontal) of the GHE are superior to the split mode. It is found that the effect of the fluid mass flow rate ratio is trivial on the heat dissipation of the split mode GHE. The highest heat transfer rate in the split flow operational mode is rendered by the ratio of the mass flow rate of 40% horizontal and 60% vertical. In addition, the climate condition has more effect on GHE’s performance and the increase of the fluid flow rate it can enhance the amount of energy released by the GHE.
Effect of Plate Thickness and Load History on Fatigue Crack Growth
Publisher: Trans Tech Publications, Ltd.
Date: 10-2009
DOI: 10.4028/WWW.SCIENTIFIC.NET/KEM.417-418.201
Abstract: A new theoretical approach is presented for investigating fatigue crack growth in plates of finite thickness. The developed approach utilizes a modified strip-yield analysis and the concept of plasticity-induced crack closure. A number of typical fatigue crack growth phenomena are investigated including the thickness effect on constant litude fatigue crack growth, retardation due to a tensile overload cycle, and short crack growth from sharp notches. Theoretical predictions are compared with experimental data and are found to be in very good correlation.
Measurement of Elastic Nonlinearities Using the Fundamental Edge Wave Mode
Publisher: Springer International Publishing
Date: 2020
Development of Micro-mechanical Models of Fatigue Damage
Publisher: Springer International Publishing
Date: 2020
Comments on Paper by Yang and Guo “On Using the Kane-Mindlin Theory in the Analysis of Crack Problems”
Publisher: Springer Science and Business Media LLC
Date: 11-2005
On the residual opening of hydraulic fractures
Publisher: Springer Science and Business Media LLC
Date: 20-03-2013
Effect of a thin plastic adhesive layer on the stress singularities in a bi-material wedge
Publisher: Elsevier BV
Date: 12-2007
Experimental investigation of crack opening loads in an aircraft load spectrum
Publisher: Elsevier BV
Date: 06-2023
Evaluation of Fatigue Crack Front Shape for a Specimen with Finite Thickness
Publisher: EDP Sciences
Date: 2015
Induced out‐of‐plane mode at the tip of blunt lateral notches and holes under in‐plane shear loading
Publisher: Wiley
Date: 12-01-2012
On Evaluation of Stress Intensity Factor from In-Plane and Transverse Surface Displacements
Publisher: Springer Science and Business Media LLC
Date: 02-06-2016
Application of Contact Theory to Evaluation of Elastic Properties of Low Consolidated Porous Media
Publisher: Springer Science and Business Media LLC
Date: 18-11-2010
Thermal stresses and fracture of thin plates during cutting and welding operations
Publisher: Springer Science and Business Media LLC
Date: 2000
Transformation Toughening in Zirconia-Enriched Composites: Micromechanical Modeling
Publisher: Springer Science and Business Media LLC
Date: 05-2006
Wave mixing with the fundamental mode of edge waves for evaluation of material nonlinearities
Publisher: Elsevier BV
Date: 06-2022
Fracture in plates of finite thickness
Publisher: Elsevier BV
Date: 12-2007
The stress field due to an interfacial edge dislocation in a multi-layered medium
Publisher: Elsevier BV
Date: 10-2015
The Evaluation of Front Shapes of Through-the-Thickness Fatigue Cracks
Publisher: MDPI AG
Date: 03-2021
DOI: 10.3390/MET11030403
Abstract: Fatigue failure of structural components due to cyclic loading is a major concern for engineers. Although metal fatigue is a relatively old subject, current methods for the evaluation of fatigue crack growth and fatigue lifetime have several limitations. In general, these methods largely disregard the actual shape of the crack front by introducing various simplifications, namely shape constraints. Therefore, more research is required to develop new approaches to correctly understand the underlying mechanisms associated with the fatigue crack growth. This paper presents new tools to evaluate the crack front shape of through-the-thickness cracks propagating in plates under quasi-steady-state conditions. A numerical approach incorporating simplified phenomenological models of plasticity-induced crack closure was developed and validated against experimental results. The predicted crack front shapes and crack closure values were, in general, in agreement with those found in the experimental observations.
Crack-growth criterion for dynamic brittle fracture
Publisher: Springer Science and Business Media LLC
Date: 02-1994
DOI: 10.1007/BF02209323
Three-dimensional stress states at crack tip induced by shear and anti-plane loading
Publisher: Elsevier BV
Date: 08-2013
On Buckling of Long Interface Cracks
Publisher: Trans Tech Publications, Ltd.
Date: 10-2009
DOI: 10.4028/WWW.SCIENTIFIC.NET/KEM.417-418.217
Abstract: The paper deals with the buckling instability of long interface cracks subjected to shear and tensile (compressive) loading parallel to the interface. A simplified mathematical model is developed within the Kirchhoff’s plate bending theory and a general semi-analytical solution is obtained based on the classical strategy for solving for the Euler buckling load. Asymptotic solutions are derived for extreme cases of the applied shear to tensile (compressive) load ratios. The obtained results correlate well with previous numerical studies and can be used to analyze many traditional problems in composite as well as many others, for ex le, the problem of triggering snow avalanches.
Effect of material properties of composite restoration on the strength of the restoration–dentine interface due to polymerization shrinkage, thermal and occlusal loading
Publisher: Elsevier BV
Date: 07-2007
DOI: 10.1016/J.MEDENGPHY.2006.07.009
Abstract: The purpose of this investigation was to adopt an analytical approach to analyse stresses at the restoration-dentine interface caused by polymerization shrinkage, occlusal and thermal loading with the primary focus on evaluating the effect of the material properties of the composite restoration on the strength of the interface. Some essential simplifications were employed to derive an explicit analytical solution. The results confirm previous findings that interfacial stresses due to polymerization shrinkage are increased with the higher modulus of elasticity of the restoration, while Poisson's ratio of the restorative material has a very small influence on these stresses. Occlusal loading resulted in much lower interfacial stresses when compared to shrinkage and thermal loads. The obtained results were in a good agreement with other numerical and clinical studies. From the modelling analysis it was found that the majority of commercially available composite restorative materials are expected to create significant interfacial stresses when subjected to cold temperatures. In addition, it was shown that there is a considerable potential for interfacial stresses to be minimised by an appropriate selection of thermo-mechanical properties of the restorative material especially with the new finding on the negative temperature variation effect.
A new passive defect detection technique based on the principle of strain compatibility
Publisher: IOP Publishing
Date: 27-05-2008
Characterisation of Fracture and HAC Resistance of an Individual Microstructural Constituent with Micro-Cantilever Testing
Publisher: Trans Tech Publications, Ltd.
Date: 09-2016
DOI: 10.4028/WWW.SCIENTIFIC.NET/KEM.713.66
Abstract: This paper focuses on the application of miniaturized fracture tests to evaluate the fracture and hydrogen assisted cracking (HAC) resistance of a selected microstructural constituent (acicular ferrite, AF) which only occurs in microscopic material volumes. Site-specific Focused Ion Beam (FIB) micro-machining was used to fabricate sharply notched micro-cantilevers into a region fully constituting of AF. The micro-cantilevers were subsequently tested under uncharged and hydrogen charged conditions with a nanoindenter. The load displacement curves were recorded and analysed with a simplified plastic hinge model for the uncharged specimen, as AF demonstrated an essentially ductile behaviour. The simplified model assisted with FE simulations provided values of the critical plastic crack tip opening displacement (CTOD). A value of the conditional fracture toughness was thereby determined as 12.1 MPa m 1/2 . With LEFM, a threshold stress intensity factor, Kth, to initiate hydrogen crack propagation in AF was found to range between 1.56 MPa m 1/2 and 4.36 MPa m 1/2 . All these values were significantly below the corresponding values reported for various ferrous alloys in standard macro-tests. This finding indicates that the fracture and HAC resistance at the micro-scale could be very different than at the macro-scale as not all fracture toughening mechanisms may be activated at this scale level.
Collapse load for a crack in a plate with a mismatched welded joint
Publisher: Elsevier BV
Date: 10-2006
Stress analysis of a crack in a fiber-reinforced layered composite
Publisher: Elsevier BV
Date: 12-2014
On a rigid inclusion pressed between two elastic half spaces
Publisher: Elsevier BV
Date: 2014
On a thermo-mechanical effect and criterion of crack propagation
Publisher: Springer Science and Business Media LLC
Date: 2002
Microstructural, Mechanical, Texture and Residual Stress Characterizations of X52 Pipeline Steel
Publisher: MDPI AG
Date: 09-08-2017
DOI: 10.3390/MET7080306
A simplified method for the evaluation of fatigue crack front shapes under mode I loading
Publisher: Springer Science and Business Media LLC
Date: 19-06-2014
Frequency selection and time shifting for maximizing the performance of low-frequency guided wave mixing
Publisher: Elsevier BV
Date: 2023
Integral estimates in non-linear oscillatory systems
Publisher: Elsevier BV
Date: 1996
Fundamental solutions for the generalised plane strain theory
Publisher: Elsevier BV
Date: 09-2002
Detection of Delamination Damage in a Composite Laminate Beam Utilising the Principle of Strain Compatibility
Publisher: Trans Tech Publications, Ltd.
Date: 10-2009
DOI: 10.4028/WWW.SCIENTIFIC.NET/KEM.417-418.269
Abstract: This paper presents an experimental investigation of a new method for damage detection based on the most fundamental concept in continuum mechanics: strain compatibility. Compliance with this principle implies a deformed material is free from discontinuities, which are indicative of many types of structural damage. Therefore the principle of strain compatibility, in its ability to identify discontinuities, is very promising as a new foundation for future research into non-destructive evaluation and structural health monitoring technologies. The proposed method has many advantages compared to existing damage detection techniques, such as its invariance to material properties, type and intensity of loading, and the geometry of the structure. In this paper, a proposed formulation of the strain compatibility equation for beam structures, which is invariant to loading intensity, is presented. An experimental investigation of the proposed algorithm was conducted on a delaminated cantilever beam, utilising a PSV-3D scanning laser vibrometer. The experiment demonstrated that the strain compatibility technique can accurately locate delamination damage in composite beam structures.
Effect of a variation in material properties on the crack tip opening displacement
Publisher: Wiley
Date: 27-04-2012
Application of digital image correlation technique for investigation of the displacement and strain fields within a sharp notch
Publisher: Elsevier BV
Date: 10-2015
A Model of Hydrogen Assisted Cold Cracking in Weld Metal
Publisher: American Society of Mechanical Engineers
Date: 24-09-2012
Abstract: Due to significant cost and productivity advantages, low heat inputs, high welding speeds, severe loading conditions and the use of cellulosic electrodes in the construction of oil and gas pipelines are unavoidable in Australia. Another significant cost reduction directly related to the tonnage of steel pipe dictates the wider use of higher grade steels, such as X70, X80 or X100. These current tendencies raise a serious concern regarding potential problems associated with weld metal hydrogen assisted cold cracking, HACC. Although there are industry standards and guidelines for the avoidance of hydrogen cracking in the heat affected zone, this is not the case for the weld metal, which is now more likely source of crack initiation in modern pipeline steels. The current paper develops a simplified mathematical model to predict the risk of hydrogen cracking in weld metal. A sensitivity study is conducted to evaluate the effect of various welding parameters and geometry, such as heat input, preheat and ambient temperatures and wall thickness on the risk of hydrogen cracking.
Conductivity of narrow fractures filled with a proppant monolayer
Publisher: Elsevier BV
Date: 12-2012
Induction heating apparatus for high temperature testing of thermo-mechanical properties
Publisher: Elsevier BV
Date: 10-2009
A brief review of recent three-dimensional studies of brittle fracture
Publisher: Pleiades Publishing Ltd
Date: 2016
An experimental method for evaluating mode II stress intensity factor from near crack tip field
Publisher: Springer Science and Business Media LLC
Date: 21-12-2015
A study on the relationship between microstructure and mechanical properties of acicular ferrite and upper bainite
Publisher: Elsevier BV
Date: 04-2016
Deformation and fracture of plates of finite thickness
Publisher: IOP Publishing
Date: 08-2009
Residual opening of hydraulically stimulated fractures filled with granular particles
Publisher: Elsevier BV
Date: 12-2012
On higher order terms and out-of-plane singular mode
Publisher: Elsevier BV
Date: 06-2011
Analysis of interfacial fracture in dental restorations
Publisher: Elsevier BV
Date: 11-2011
DOI: 10.1016/J.DENTAL.2011.06.009
Abstract: To provide a brief summary of the background theory of interfacial fracture mechanics and develop an analytical framework that identifies the critical factors for the analysis of the initiation and propagation of adhesion failure in composite restorations. A conceptual framework utilizing interfacial fracture mechanics and Toya's solution for a partially delaminated circular inclusion in an elastic matrix, which can be applied (with caution) to approximate polymer curing induced cracking about composite resins for class 1 cavity restorations. The findings indicate that: (1) most traditional shear tests are not appropriate for the analysis of the interfacial failure initiation (2) material properties of the restorative and tooth material have a strong influence on the energy realize rate (3) there is a strong size effect and (4) interfacial failure once initiated is characterized by unstable propagation along the interface almost completely encircling the composite. The work is important for the analysis of the reliability of composite class I restorations and provides an adequate interpretation of recent adhesion debonding experimental results utilizing tubular geometry of specimens. The approach clearly identifies the critical parameters including curing strain, material modulii, size and interfacial strain energy release rate for reliable development of advanced restorative materials.
Crack growth retardation following the application of an overload cycle using a strip-yield model
Publisher: Elsevier BV
Date: 07-2009
Prediction of welding stresses in WIC test and its application in pipelines
Publisher: Informa UK Limited
Date: 20-07-2016
Three dimensional finite element mixed fracture mode under anti-plane loading of a crack
Publisher: Elsevier BV
Date: 12-2012
Improvement of the Fatigue Resistance of Super Duplex Stainless-Steel (SDSS) Components Fabricated by Wire Arc Additive Manufacturing (WAAM)
Publisher: MDPI AG
Date: 19-09-2022
DOI: 10.3390/MET12091548
Abstract: This study aimed to improve the overall fatigue properties of WAAM-produced SDSS by changing the interpass temperatures. Micro-computed tomography was used to quantitatively characterise the internal defects, such as porosity, in large-volume WAAM-fabricated SDSS materials. An increase in the interpass temperature led to a reduction in the ferrite phase balance by up to 20%. The fatigue anisotropy was still evident, but the fatigue limit in the weakest (transverse) direction was increased to 250 MPa or by approximately 40%. Meanwhile, the increased interpass temperature had no significant effect on fatigue resistance in the longitudinal direction. This study suggests that the interpass temperature can be critical for both achieving isotropic mechanical properties and increasing fatigue life of structural components fabricated with the WAAM method.
Theoretical model for roughness induced opening of cracks subjected to compression and shear loading
Publisher: Springer Science and Business Media LLC
Date: 11-2011
Effective elastic properties of a weakly nonlinear particulate composite
Publisher: Elsevier BV
Date: 05-2022
Effect of vertex singularities on stress intensities near plate free surfaces
Publisher: Wiley
Date: 08-03-2015
DOI: 10.1111/FFE.12294
A model‐based method for damage detection with guided waves
Publisher: Hindawi Limited
Date: 18-05-2016
DOI: 10.1002/STC.1884
A generalized plane-strain theory for transversally isotropic plates
Publisher: Springer Science and Business Media LLC
Date: 03-2003
On the evaluation of stress intensity factor from displacement field affected by 3D corner singularity
Publisher: Elsevier BV
Date: 2016
Application of the distributed dislocation technique for calculating cyclic crack tip plasticity effects
Publisher: Wiley
Date: 19-11-2007
Comments on a paper by Aliha and Saghafi “The effects of thickness and Poisson’s ratio on 3D mixed-mode fracture”
Publisher: Elsevier BV
Date: 12-2013
Effect of plate thickness on stress state at sharp notches and the strength paradox of thick plates
Publisher: Elsevier BV
Date: 07-2010
Residual opening of hydraulic fractures filled with compressible proppant
Publisher: Elsevier BV
Date: 07-2013
Special Issue on Recent Trends in Advanced High-Strength Steels
Publisher: MDPI AG
Date: 27-07-2021
DOI: 10.3390/APP11156914
Abstract: Advanced high-strength steels play an essential role in many industries and engineering applications because of their excellent combination of mechanical properties important for design, e [...]
On the design of dental resin-based composites: A micromechanical approach
Publisher: Elsevier BV
Date: 2008
DOI: 10.1016/J.ACTBIO.2007.06.011
Abstract: Adhesive resin-based restorative materials have the potential to considerably strengthen teeth and offer more economically viable alternatives to traditional materials such as gold, amalgam or ceramics. Other advantages are direct and immediate placement and the elimination of the use of mercury. However, polymerization shrinkage during curing of an adhesive restoration and mismatch in mechanical properties can lead to the initiation and development of interfacial defects. These defects could have a detrimental effect on the longevity of the restored tooth. The current study is focused on some design issues of resin-based composites affecting the longevity of the tooth-restoration interface. The theoretical approach is based on self-consistent micromechanical modelling that takes into account the effect of the material properties, volume concentration of the dispersed particle phase as well as the shape of these particles on the overall thermomechanical properties of the composite. Results obtained for resin-based composites reinforced with spherical, disc and short fibre particles highlight the advantages of disc shaped and short fibre particles.
On the Presence of the Out–of–Plane Singular Mode Induced by Plane Loading With KII = KI = 0
Publisher: Springer Science and Business Media LLC
Date: 27-07-2010
Design against Fatigue of Super Duplex Stainless Steel Structures Fabricated by Wire Arc Additive Manufacturing Process
Publisher: MDPI AG
Date: 07-12-2021
DOI: 10.3390/MET11121965
Abstract: Additive manufacturing (AM) is increasingly used to make complex components for a wide spectrum of applications in engineering, medicine and dentistry. Wire arc additive manufacturing (WAAM), as one of AM processes, utilises electric arc and metal wire to fabricate fully dense and heavy metal parts at relatively low costs and high-energy efficiencies. WAAM was successfully applied in the production of several welding-based metal structures. Recently, there was a growing interest in WAAM processing of super duplex stainless steels (SDSS) due to their high strength and excellent corrosion resistance, which make them the prime choice for load-bearing structures in marine applications. Although a number of studies investigated the microstructural and mechanical properties of WAAM-processed SDSS components, little is known regarding their fatigue performance, which is critical in engineering design. This study reports on the outcomes of fatigue tests and fracture surface fractography of WAAM-processed SDSS. The results obtained indicate a significant anisotropy of fatigue properties and fatigue crack initiations resulting from internal defects rather than surface flaws. Based on these experimental results, we suggest an effective design methodology to improve the fatigue life of the WAAM-fabricated SDSS components. We also indicate that post-manufacturing surface treatments should not be underlined for the enhanced fatigue resistance of WAAM-processed SDSS structures.
Investigation of hydrogen assisted cracking in acicular ferrite using site-specific micro-fracture tests
Publisher: Elsevier BV
Date: 2016
On criterion of crack initiation
Publisher: Springer Science and Business Media LLC
Date: 1995
DOI: 10.1007/BF00033969
Effect of uniaxial stress on the propagation of higher-order Lamb wave modes
Publisher: Elsevier BV
Date: 11-2016
Rigid Circular Inclusion Squeezed by Semi-Infinite Elastic Planes
Publisher: Springer Science and Business Media LLC
Date: 10-2011
Three-Dimensional Computational Analysis of Stress State Transition in Through-Cracked Plates
Publisher: Springer Science and Business Media LLC
Date: 21-04-2016
Low Cycle Fatigue Behavior of Elbows with Local Wall Thinning
Publisher: MDPI AG
Date: 17-02-2020
DOI: 10.3390/MET10020260
Abstract: There have been a number of studies concerning the integrity of high-strength carbon steel pipe elbows weakened by local pipe wall thinning, the latter can be typically caused by flow accelerated erosion/corrosion. In particular, the focus of several recent studies was on low cycle fatigue behavior of damaged elbows, mainly, in relation to strength and integrity of piping systems of nuclear power plants subjected to extreme loading conditions, such as earthquake or shutdown. The current paper largely adopts the existing methodology, which was previously developed, and extends it to copper-nickel elbows, which are widely utilized in civil infrastructure in seismically active regions. FE (finite element) studies along with a full-scale testing program were conducted and the outcomes are summarized in this article. The overall conclusion is that the tested elbows with various severity of local wall thinning, which were artificially introduced at different locations, demonstrate a strong resistance against low cycle fatigue loading. In addition, elbows with wall thinning defects possess a significant safety margin against seismic loading. These research outcomes will contribute to the development of strength evaluation procedures and will help to develop more effective maintenance procedures for piping equipment utilized in civil infrastructure.
A crack closure model of fatigue crack growth in plates of finite thickness under small-scale yielding conditions
Publisher: Elsevier BV
Date: 02-2009
Analytical modelling of a pipe with flowing medium subjected to an impulse load
Publisher: No publisher found
Date: 2011
Influence of crack opening and incident wave angle on second harmonic generation of Lamb waves
Publisher: IOP Publishing
Date: 20-04-2018
On material choice and fracture susceptibility of restored teeth: An asymptotic stress analysis approach
Publisher: Elsevier BV
Date: 12-2006
DOI: 10.1016/J.DENTAL.2005.09.006
Abstract: The ultimate success or failure of a restored tooth is largely dependent on clinical management. Clinicians may choose from a number of restorative materials, different clinical techniques and cavity preparation procedures. The purpose of this study was to specifically examine aspects of the material choice holding other factors constant. The current paper adopts a fundamental result in the linear theory of elasticity on the singular stress distribution in a bi-materials wedge to analyze the fracture susceptibility of different materials used for the restoration of a tooth. Comparable results are reported for amalgam, gold alloys and ceramic materials. It is shown that due to a wide variety of mechanical properties the application of resin-based composites could lead to improved or less fracture resistance of the restored tooth. This variety in the mechanical properties for resin-based composites could be partially responsible for the contradictory evidences reported by different clinical studies. The present work contributes evidence from an analytical model to assist the restorative dentist in selection of an appropriate restorative material and guide the manufacturing companies on the preferred physical properties of newer designed materials.
A baseline‐free and non‐contact method for detection and imaging of structural damage using 3D laser vibrometry
Publisher: Hindawi Limited
Date: 10-06-2016
DOI: 10.1002/STC.1894
On the Correspondence between Two- and Three-Dimensional Elastic Solutions of Crack Problems
Publisher: Trans Tech Publications, Ltd.
Date: 09-2016
DOI: 10.4028/WWW.SCIENTIFIC.NET/KEM.713.18
Abstract: The classical two-dimensional solutions of the theory of elasticity provide a framework of Linear Elastic Fracture Mechanics. However, these solutions, in fact, are approximations despite that the corresponding governing equations of the plane theories of elasticity are solved exactly. This paper aims to elucidate the main differences between the approximate (two-dimensional) and exact (three-dimensional) elastic solutions of crack problems. The latter demonstrates many interesting features, which cannot be analysed within the plane theories of elasticity. These features include the presence of scale effects of deterministic nature, the existence of new singular stress states and fracture modes. Furthermore, the deformation and stress fields near the tip of the crack is essentially three-dimensional and do not follow plane stress or plane strain simplifications. Moreover, in certain situations the two-dimensional solutions can provide misleading results and several characteristic ex les are outlined in this paper.
On stress singularities at angular corners of plates of arbitrary thickness under tension
Publisher: Springer Science and Business Media LLC
Date: 04-2005
Out-of-plane singular stress fields in V-notched plates and welded lap joints induced by in-plane shear load conditions
Publisher: Wiley
Date: 28-10-2010
An Application of the Kane and Mindlin Theory to Crack Problems in Plates of Arbitrary Thickness
Publisher: Springer Science and Business Media LLC
Date: 12-2004
Effect of the thickness on elastic deformation and quasi-brittle fracture of plate components
Publisher: Elsevier BV
Date: 07-2010
Adhesively bonded joints under cyclic loading spectra
Publisher: Wiley
Date: 02-2002
Strain energy density approach for failure evaluation of occlusal loaded ceramic tooth crowns
Publisher: Elsevier BV
Date: 04-2012
Analytical modelling of the transient dynamics of pipes with flowing medium
Publisher: IOP Publishing
Date: 08-2009
Increasing the design strength of piping fittings
Publisher: Springer Science and Business Media LLC
Date: 04-1991
DOI: 10.1007/BF00771978
Buckling Failure of Interface Cracks Loaded in Shear
Publisher: Springer Science and Business Media LLC
Date: 12-2007
A strip yield model for two collinear cracks
Publisher: Elsevier BV
Date: 08-2012
Special Issue on “Mechanical Behaviour of Aluminium Alloys”
Publisher: MDPI AG
Date: 09-10-2018
DOI: 10.3390/APP8101854
Abstract: Aluminium alloys are the most common type of non-ferrous material utilised for a wide range of engineering applications, namely in the automotive, aerospace, and structural industries, among others. [...]
Features of fatigue crack growth due to repeated thermal shock
Publisher: Wiley
Date: 02-2002
Theoretical and experimental study of fatigue growth of interacting cracks
Publisher: Elsevier BV
Date: 2015
Wall Shear Stress for an Aorta with Aneurysms Via Computational Fluid Dynamics
Publisher: Springer International Publishing
Date: 2022
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