ORCID Profile
0000-0002-0023-3715
Current Organisation
Hainan University
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Publisher: Springer Science and Business Media LLC
Date: 08-2012
Publisher: Elsevier BV
Date: 02-2019
Publisher: Elsevier BV
Date: 10-2015
Publisher: World Scientific Pub Co Pte Lt
Date: 23-04-2013
DOI: 10.1142/S0219876213500084
Abstract: This paper presents a new hybrid finite element approach with fundamental solutions (HFS-FEM) as a trial function for modeling thermal behavior in perforated or cellular solids containing multiple randomly distributed circular holes with arbitrary sizes and locations, using special elements to reduce mesh effort. Based on the independent intra-element field in the element consisting of fundamental solutions and the frame field defined on the element boundary, the approach has characteristic features of elementary boundary integrals and versatile element construction by virtue of combining the new hybrid functional. Special purpose hole elements and regular elements are constructed using the special fundamental solution satisfying the specified hole boundary conditions and the conventional fundamental solution, respectively, such that the circular hole region can be modeled with a much smaller number of elements. Numerical ex les including problems with single, double and randomly distributed multiple holes are considered and the results demonstrate the versatility, accuracy, and efficiency of the approach presented.
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 03-2007
Publisher: Elsevier BV
Date: 2017
Publisher: Springer Science and Business Media LLC
Date: 09-08-2012
Publisher: Archives of Mechanics
Date: 2020
DOI: 10.24423/AOM.3434
Publisher: Springer Science and Business Media LLC
Date: 07-04-2012
Publisher: Elsevier BV
Date: 12-2020
Publisher: Springer Science and Business Media LLC
Date: 28-10-2015
Publisher: MDPI AG
Date: 23-08-2021
DOI: 10.3390/MA14164752
Abstract: Spherically encapsulated phase change materials (PCMs) are extensively incorporated into matrix material to form composite latent heat storage system for the purposes of saving energy, reducing PCM cost and decreasing space occupation. Although the melting of PCM sphere has been studied comprehensively by experimental and numerical methods, it is still challenging to quantitatively depict the contribution of complex natural convection (NC) to the melting process in a practically simple and acceptable way. To tackle this, a new effective thermal conductivity model is proposed in this work by focusing on the total melting time (TMT) of PCM, instead of tracking the complex evolution of solid–liquid interface. Firstly, the experiment and finite element simulation of the constrained and unconstrained meltings of paraffin sphere are conducted to provide a deep understanding of the NC-driven melting mechanism and exhibit the difference of melting process. Then the dependence of NC on the particle size and heating temperature is numerically investigated for the unconstrained melting which is closer to the real-life physics than the constrained melting. Subsequently, the contribution of NC to the TMT is approximately represented by a simple effective thermal conductivity correlation, through which the melting process of PCM is simplified to involve heat conduction only. The effectiveness of the equivalent thermal conductivity model is demonstrated by rigorous numerical analysis involving NC-driven melting. By addressing the TMT, the present correlation thoroughly avoids tracking the complex evolution of melting front and would bring great convenience to engineering applications.
Publisher: Elsevier BV
Date: 09-2006
DOI: 10.1016/J.CLAE.2006.05.004
Abstract: To compare graticule and image capture assessment of the lower tear film meniscus height (TMH). Lower tear film meniscus height measures were taken in the right eyes of 55 healthy subjects at two study visits separated by 6 months. Two images of the TMH were captured in each subject with a digital camera attached to a slit-l biomicroscope and stored in a computer for future analysis. Using the best of two images, the TMH was quantified by manually drawing a line across the tear meniscus profile, following which the TMH was measured in pixels and converted into millimetres, where one pixel corresponded to 0.0018 mm. Additionally, graticule measures were carried out by direct observation using a calibrated graticule inserted into the same slit-l eyepiece. The graticule was calibrated so that actual readings, in 0.03 mm increments, could be made with a 40x ocular. Smaller values of TMH were found in this study compared to previous studies. TMH, as measured with the image capture technique (0.13+/-0.04 mm), was significantly greater (by approximately 0.01+/-0.05 mm, p=0.03) than that measured with the graticule technique (0.12+/-0.05 mm). No bias was found across the range s led. Repeatability of the TMH measurements taken at two study visits showed that graticule measures were significantly different (0.02+/-0.05 mm, p=0.01) and highly correlated (r=0.52, p<0.0001), whereas image capture measures were similar (0.01+/-0.03 mm, p=0.16), and also highly correlated (r=0.56, p<0.0001). Although graticule and image analysis techniques showed similar mean values for TMH, the image capture technique was more repeatable than the graticule technique and this can be attributed to the higher measurement resolution of the image capture (i.e. 0.0018 mm) compared to the graticule technique (i.e. 0.03 mm).
Publisher: Informa UK Limited
Date: 29-11-2021
Publisher: Springer Berlin Heidelberg
Date: 2007
Publisher: World Scientific Pub Co Pte Lt
Date: 08-2015
DOI: 10.1142/S0219876215400125
Abstract: In this paper, unidirectional fiber reinforced composites with periodic square array of circular and hexagonal fibers is studied by a novel fundamental-solution-based hybrid finite element model. Due to the periodicity of composites, a representative unit cell containing a single fiber with circular or hexagonal cross section is taken into consideration and analyzed using the proposed hybrid finite element model. In the present numerical model, special polygonal fiber elements with arbitrary number of sides are developed by coupling the independent element interior and frame displacement fields. The element interior displacement fields are approximated by the combination of fundamental solutions to prior satisfy the governing equation of the problem, so that the domain integral appeared in the weak-form hybrid functional in terms of dual variables is converted into boundary integrals. Independently the element frame displacement fields are approximated by the conventional shape functions to guarantee the continuity of adjacent elements. Following this, special polygonal fiber elements are constructed to reduce mesh effort in the fiber region and achieve good accuracy with fewer elements. Finally, numerical tests are carried out for assessing the performance of the present special elements.
Publisher: IOP Publishing
Date: 04-2016
Publisher: Kaunas University of Technology (KTU)
Date: 02-12-2022
DOI: 10.5755/J02.MS.29824
Abstract: Improved heat transfer in composites consisting of guar gel matrix and randomly distributed glass microspheres is extensively studied to predict the effective thermal conductivity of composites using the finite element method. In the study, the proper and probabilistic three-dimensional random distribution of microspheres in the continuous matrix is automatically generated by a simple and efficient random sequential adsorption algorithm which is developed by considering the correlation of three factors including particle size, number of particles, and particle volume fraction controlling the geometric configuration of random packing. Then the dependences of the effective thermal conductivity of composite materials on some important factors are investigated numerically, including the particle volume fraction, the particle spatial distribution, the number of particles, the nonuniformity of particle size, the particle dispersion morphology and the thermal conductivity contrast between particle and matrix. The related numerical results are compared with theoretical predictions and available experimental results to assess the validity of the numerical model. These results can provide good guidance for the design of advanced microsphere reinforced composite materials.
Publisher: Bentham Science Publishers Ltd.
Date: 28-03-2015
Publisher: Columbia International Publishing
Date: 2015
Publisher: Elsevier BV
Date: 2024
Publisher: MDPI AG
Date: 16-01-2019
Abstract: As a heterogeneous material, functionally graded material (FGM) behaves as continuously changed material properties in certain directions from one composition to another, and hence it has received much more attention for biomedical applications and thermal protections to achieve innovative functions that conventional homogeneous material cannot accomplish. However, due to the particularly small thickness ratio of coating to substrate in practice, the conventional mesh discretization of the coating region is inefficient. To simplify the meshing procedure and increase the efficiency of analysis, the approximated transfer algorithm based on the concept of finite difference is developed for transferring boundary conditions applied on the coating surface to the interface of coating and substrate. As a result, only the substrate with transferred convection boundary conditions needs to be solved numerically, i.e., by the fundamental-solution based hybrid finite element method (HFS-FEM) with high accuracy and feasible polygonal element construction, in which only integrals along the element boundary are evaluated because of the application of fundamental solutions of the problem as kernel functions of interior approximated fields. Finally, numerical experiments including the single-layered, multi-layered and functionally graded coatings are carried out to verify the accuracy and applicability of the present method.
Publisher: Elsevier BV
Date: 06-2022
Publisher: Columbia International Publishing
Date: 2015
Publisher: World Scientific Pub Co Pte Lt
Date: 12-2012
DOI: 10.1142/S0219519412500273
Abstract: To understand the physiology of tissue burns for successful clinical treatment, it is important to investigate the thermal behavior of human skin tissue subjected to heat injury. In this paper, a fundamental solution-based hybrid finite element formulation is proposed for numerically simulating steady-state temperature distribution inside a multilayer human skin tissue during burning. In the present approach, since only element boundary integrals are involved, the computational dimension is reduced by one as the fundamental solutions used analytically satisfies the bioheat governing equation. Further, in multi-layer skin modeling, the burn is applied via a heating disk at constant temperature on a part of the epidermal surface of the skin tissue. Numerical results from the proposed approach are firstly verified by comparing them with exact solutions of a simple single-layered model or the results from conventional finite element method. Thereafter, a sensitivity analysis is carried out to reveal the effect of biological and environmental parameters on temperature distribution inside the skin tissue subjected to heat injury.
Publisher: Springer Science and Business Media LLC
Date: 03-2007
Publisher: Elsevier BV
Date: 06-2020
Publisher: Elsevier BV
Date: 10-2022
Publisher: Emerald
Date: 15-11-2011
DOI: 10.1108/02644401111179045
Abstract: The purpose of this paper is to present a new special element model for thermal analysis of composites. A hybrid finite element formulation taking the fundamental solution as kernel function is presented in this work for analyzing the thermal behavior and predicting the effective thermal conductivity of fiber‐reinforced composites. A representative volume cell containing single or multiple fibers (or inclusions) is considered to investigate the overall temperature distribution affected by the inclusions and the interactions among them, and to evaluate the effective thermal conductivity of the composites using the presented algorithm with special‐purpose inclusion elements. Numerical ex les are presented to demonstrate the accuracy and applicability of the proposed method in analyzing fiber‐reinforced composites. The independent intra‐element field and frame field, as well as the newly‐developed hybrid functional, make the algorithm versatile in terms of element construction, with the result that the related variational functional involves the element boundary integral only. All numerical results are compared with the solutions from ABAQUS and good agreement is observed for all cases, clearly demonstrating the potential applications of the proposed approach to large‐scale modeling of fiber‐reinforced composites. The usage of special inclusion element can significantly reduce model meshing effort and computing cost, and simultaneously avoid mesh regeneration when the fiber volume fraction is changed. Due to the fact that the established special elements exactly satisfy the interaction of matrix and fiber within the element, only element boundary integrals are involved, thus the algorithm can significantly reduce modeling effort and computing cost with less elements, and simultaneously avoid mesh regeneration when the fiber volume fraction is changed. Based on the special fundamental solution, a newly‐constructed inclusion element is applied to a number of test problems involving unit RVCs with multiple fibers to access the accuracy of the model. The effective thermal conductivity of the composites is evaluated for cases of single and multiple fibers using the average temperatures at certain points on a data‐collection surface. A new algorithm for evaluating effective properties with special elements is presented.
Publisher: Wiley
Date: 2007
DOI: 10.1002/NME.1810
Publisher: CRC Press
Date: 05-05-2014
DOI: 10.1201/B17026-22
Publisher: SAGE Publications
Date: 06-07-2015
Abstract: This paper investigates the effects of clustering on the effective transverse thermal conductivity of unidirectional cement composites filled with natural hemp fibers. A typical clustering pattern with four hemp fibers embedded into cement matrix is designed as the representative two-dimensional unit cell, which is taken from the periodic cement composite under consideration, and a clustering degree parameter is introduced to adjust the distance between clustered fibers. For this heterogeneous two-component composite model, distributions of the heat flux component are obtained using finite element simulation for various clustering cases involving different global fiber volume concentrations, clustering degree parameters, and thermal conductivity of both fiber and matrix, to evaluate the effective thermal conductivity of the composite. To further reveal the effects caused by clustered fibers, a random cluster pattern of hemp fibers in the unit cell is considered for comparison with the present regular clustering pattern. Further, a simple theoretical model with specified flexible factor f is developed by matching the theoretical and numerical predictions.
Publisher: Elsevier BV
Date: 2012
Publisher: Walter de Gruyter GmbH
Date: 14-09-2016
Abstract: Computational micromechanics provides an efficient strategy to optimize composite materials by addressing the effect of different material and geometric parameters involved. In the present paper, the effective transverse elastic properties for periodic composite materials reinforced with single and clustered polygonal fibers are evaluated using the micromechanical finite element formulation subject to periodic displacement boundary conditions. The cross-sectional shapes of polygonal fibers are assumed to be triangular, square, pentagonal, hexagonal, octagonal, and circular to perform comprehensive investigation. By applying a periodic displacement constraint along the boundary of the representative unit cell of the composite to meet the requirement of straight-line constraint during the deformation of the unit cell, the computational micromechanical modeling based on homogenization technology is established for evaluating the effects of fiber shape and cluster on the overall properties. Subsequently, the micromechanical model is ided into four submodels, which are solved by means of the finite element analysis for determining the traction distributions along the cell boundary. Finally, the effective orthotropic elastic constants of composites are obtained using the solutions of the linear system of equations involving traction integrations to investigate the effects of fiber shape and cluster on the overall properties.
Publisher: Wiley
Date: 12-08-2016
Publisher: Elsevier BV
Date: 11-2017
Publisher: BMJ
Date: 06-2006
Publisher: Informa UK Limited
Date: 07-2006
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 02-2007
Publisher: WIT Press
Date: 04-06-2010
Publisher: Springer Science and Business Media LLC
Date: 08-2005
Publisher: MDPI AG
Date: 16-01-2015
DOI: 10.3390/IJMS16012001
Publisher: Wiley
Date: 11-2005
Publisher: World Scientific Pub Co Pte Lt
Date: 04-2017
DOI: 10.1142/S1758825117500314
Abstract: Polygonal finite elements with high level of geometric isotropy provide greater flexibility in mesh generation and material science involving topology change in material phase. In this study, a hybrid finite element model based on polygonal mesh is constructed by centroidal Voronoi tessellation for two-dimensional isotropic elastic problems and then is formulated with element boundary integrals only. For the present [Formula: see text]-sided polygonal finite element, two independent fields are introduced: (i) displacement and stress fields inside the element (ii) frame displacement field along the element boundary. The interior fields are approximated by fundamental solutions so that they exactly satisfy the governing equations to convert element domain integral in the two-field functional into element boundary integrals to reduce integration dimension. While the frame displacement field is approximated by the conventional shape functions to satisfy the conformity requirement between adjacent elements. The two independent fields are coupled by the weak functional to form the stiffness equation. This hybrid formulation enables the construction of [Formula: see text]-sided polygons and extends the potential applications of finite elements to convex polygons of arbitrary order. Finally, five ex les including patch tests in square domain, thick cylinder under internal pressure, beam bending and composite with clustered holes are provided to illustrate convergence, accuracy and capability of the present Voronoi polygonal finite elements.
Publisher: Elsevier BV
Date: 07-2006
Publisher: Elsevier
Date: 2019
Publisher: Springer Science and Business Media LLC
Date: 12-05-2011
Publisher: Elsevier BV
Date: 2020
Publisher: Elsevier BV
Date: 05-2005
Publisher: Elsevier BV
Date: 2018
Publisher: Informa UK Limited
Date: 26-03-2021
Publisher: SciTech Solutions
Date: 2016
Publisher: Elsevier BV
Date: 09-2008
Publisher: BMJ
Date: 04-2006
Publisher: Springer Science and Business Media LLC
Date: 14-09-2019
Publisher: Association for Research in Vision and Ophthalmology (ARVO)
Date: 03-2006
DOI: 10.1167/IOVS.05-0939
Publisher: Springer Science and Business Media LLC
Date: 31-01-2023
Publisher: Springer Science and Business Media LLC
Date: 10-2009
Publisher: Elsevier BV
Date: 12-2021
Publisher: Springer Science and Business Media LLC
Date: 31-08-2005
Publisher: Elsevier
Date: 2007
Publisher: IOP Publishing
Date: 11-2021
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 05-2006
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 02-2006
Publisher: Informa UK Limited
Date: 22-05-2015
Publisher: WIT Press
Date: 22-10-2013
DOI: 10.2495/BEM360271
Publisher: Elsevier BV
Date: 12-2006
Publisher: Elsevier BV
Date: 06-2006
Publisher: FapUNIFESP (SciELO)
Date: 10-2015
Publisher: Springer Science and Business Media LLC
Date: 06-2005
Publisher: Elsevier BV
Date: 11-2019
Publisher: Elsevier BV
Date: 12-2012
Publisher: MDPI AG
Date: 14-01-2018
DOI: 10.3390/MA11010133
Publisher: Elsevier BV
Date: 12-2021
Publisher: Elsevier BV
Date: 05-2007
Publisher: Elsevier BV
Date: 09-2010
Publisher: World Scientific Pub Co Pte Lt
Date: 03-07-2014
DOI: 10.1142/S0219519414500602
Abstract: In this paper, the method of fundamental solution (MFS) coupling with the dual reciprocity method (DRM) is developed to solve nonlinear steady state bioheat transfer problems. A two-dimensional nonlinear skin model with temperature-dependent blood perfusion rate is studied. Firstly, the original bioheat transfer governing equation with nonlinear term induced by temperature-dependent blood perfusion rate is linearized with the Taylor's expansion technique. Then, the linearized governing equation with specified boundary conditions is solved using a meshless approach, in which the DRM and the MFS are employed to obtain particular and homogeneous solutions, respectively. Several numerical ex les involving linear, quadratic and exponential relations between temperature and blood perfusion rate are tested to verify the efficiency and accuracy of the proposed meshless model in solving nonlinear steady state bioheat transfer problems, and also the sensitivity of coefficients in the expression of temperature-dependent blood perfusion rate is analyzed for investigating the influence of blood perfusion rate to temperature distribution in skin tissues.
Publisher: Hindawi Limited
Date: 25-10-2021
DOI: 10.1155/2021/2511582
Abstract: Drying-induced cracks are an important issue for bi-block ballastless track system consisting of foundation, precast sleepers, and cast-in-place track slab, which not only significantly affects the comfortableness and safety of rapid transit railway but also reduces the service life of ballastless track. In order to explore its damage mechanism, this work presents an evolution model of relative humidity (RH) in the CRTS I bi-block ballastless track system by considering the actual construction sequence and environmental conditions to simulate the crack propagation induced by nonuniform RH field. Firstly, based on the node coupling technique, a three-step transfer process of RH is designed to separately investigate the influence of the construction sequence on the early humidity field in the foundation, sleepers, and cast-in-place track slab, and then the nonuniform distribution of early humidity field in the ballastless track system is determined. Subsequently, the formation mechanism of shrinkage crack in the system is analyzed, and the crack propagation path is predicted by using the mixed-mode fracture criterion. The results show that the maximum relative humidity gradient (RHG) appears at the interface between the track slab and the sleeper after concreting the cast-in-place track slab, which causes the maximum principal stress due to the drying shrinkage property of concrete materials. When the maximum principal stress exceeds the tensile strength of the interface, an interface crack will be generated and converted to a splayed crack with an initial angle of about 45° at the sleeper corner, which will be further propagated under the action of drying shrinkage deformation and finally forms a transverse through-wall crack in the track slab. The simulated crack propagation path agrees with the observed one at the site well, and thus the results are beneficial to understand the formation mechanism of through-wall crack in the track slab and further guide the construction design of the bi-block ballastless track system.
Publisher: Elsevier BV
Date: 02-2006
Publisher: Wiley
Date: 31-03-2021
Abstract: Auxetic metamaterials with negative Poisson's ratio have attracted much attention due to their counterintuitive deformation behavior over the conventional engineering materials. However, it is difficult to describe the complex correlation between microstructure parameters and auxeticity by analytical or empirical solutions in the form of math expressions. Herein, the machine learning (ML) model with artificial neural network (ANN) is developed to analyze a novel planar auxetic metamaterial designed by introducing orthogonally aligned oval‐shaped perforations in solid base material, and its feasibility is demonstrated through the experimental and finite element method (FEM) solutions. It is found that the proposed structure involving less design parameters exhibits the best performance at the aspects of auxetic behavior and stress level than those with peanut‐shaped holes and elliptic holes. Moreover, the results of parameter analysis demonstrate that the present ML solution model can provide accurate predicting results rapidly for this problem, without the limitations of explicit solution expressions which are typically not available in practice. The ML model allows one to obtain the desired auxetic property by tailoring the geometric parameters effectively and accelerate auxetic metamaterial design.
Publisher: Elsevier BV
Date: 04-2023
Publisher: Walter de Gruyter GmbH
Date: 2019
Abstract: This extensive study investigated the influence of microstructure on the effective transverse thermal conductivity of unidirectional glass fiber reinforced composites, in which the fibers are randomly dispersed and the thermal conductivity of polyethylene matrix is a function of test temperature. The microstructure is characterized by parameters such as the number of fibers, fiber volume fraction, fiber size, fiber arrangement and thermal property contrast. Firstly, a simple algorithm is developed to automatically generate closest-to-real random array of fibers in unit cell to reconstruct the composite microstructure. Then, the established two-dimensional random two-component composite unit cell is solved using finite element simulation and the obtained effective thermal conductivities are compared with the theoretical predictions and the experimental results. Subsequently, the effects of microstructure parameters and test temperature are investigated, respectively. It is found that the finite element predicted properties are in very good agreement with the experimental predictions, while they are always lower than the analytically predicted properties. These results can find applications in the design of composite materials taking into account the fiber distribution morphology.
Publisher: Elsevier BV
Date: 10-2015
Publisher: Elsevier BV
Date: 11-2015
Publisher: Springer Science and Business Media LLC
Date: 11-2017
Publisher: Oxford University Press (OUP)
Date: 25-10-2016
Abstract: Existing studies reveal that the shape corners of hexagonal fiber affect the degree of constraint on the matrix material. However, none of these studies included the effect of orientation of hexagonal fibers. In this study, a computational micromechanics model of oriented hexagonal fibers in periodic unidirectional composite materials is established for the determination of effective orthotropic elastic properties of the composite. In the present numerical modeling, the representative unit composite cell including the matrix material and the single oriented hexagonal fiber or random oriented hexagonal fibers is solved by micro-scale finite element analysis with different stress loads and periodic displacement boundary conditions, which are applied along the cell boundary to meet the requirement of straight-line constraint during deformation of the cell. Subsequently, the effective elastic properties of the composite are evaluated for periodic regular packing and random packing using the homogenization approach for investigating the influence of unified orientation and random orientation of the hexagonal fibers on the overall elastic properties of the fiber-reinforced composites. The numerical results are verified by comparing with other available results.
Publisher: Elsevier BV
Date: 09-2007
Publisher: Elsevier BV
Date: 05-2007
Publisher: Springer Science and Business Media LLC
Date: 06-2016
Publisher: Springer Science and Business Media LLC
Date: 28-10-2015
Publisher: Informa UK Limited
Date: 10-2007
Publisher: Elsevier BV
Date: 2016
Publisher: Springer Science and Business Media LLC
Date: 03-2017
Publisher: Elsevier BV
Date: 10-2006
Publisher: Elsevier BV
Date: 07-2021
Publisher: Hindawi Limited
Date: 2013
DOI: 10.1155/2013/695457
Abstract: The boundary-type hybrid finite element formulation coupling the Kirchhoff transformation is proposed for the two-dimensional nonlinear heat conduction problems in solids with or without circular holes, and the thermal conductivity of material is assumed to be in terms of temperature change. The Kirchhoff transformation is firstly used to convert the nonlinear partial differential governing equation into a linear one by introducing the Kirchhoff variable, and then the new linear system is solved by the present hybrid finite element model, in which the proper fundamental solutions associated with some field points are used to approximate the element interior fields and the conventional shape functions are employed to approximate the element frame fields. The weak integral functional is developed to link these two fields and establish the stiffness equation with sparse and symmetric coefficient matrix. Finally, the algorithm is verified on several ex les involving various expressions of thermal conductivity and existence of circular hole, and numerical results show good accuracy and stability.
Publisher: Informa UK Limited
Date: 12-2012
Publisher: Wiley
Date: 14-02-2006
DOI: 10.1111/J.1600-0420.2005.00610.X
Abstract: To evaluate the reliability and repeatability of intraocular pressure (IOP) measurements using a new rebound tonometer. Intraocular pressure was measured in 42 healthy human eyes of subjects aged 18-30 years (mean +/- standard deviation [SD] 21.5 +/- 3.2 years) using the ICare Rebound and Goldmann tonometers in two separate sessions. Intraocular pressure measurements were found to read slightly, but not significantly, higher with the ICare tonometer compared with the Goldmann instrument in both sessions (first session: mean bias +/- SD + 0.50 +/- 2.33 mmHg second session: mean bias +/- SD + 0.52 +/- 1.92 mmHg). Limits of agreement between repeated readings were +/- 5.11 mmHg for measurements taken with the ICare tonometer, compared with +/- 3.15 mmHg for measurements taken with the Goldmann method. Measurement of IOP in normal, healthy subjects using the ICare rebound tonometer produced a small, statistically insignificant, positive bias when compared with the Goldmann tonometer. Intersessional repeatability of IOP taken with the ICare is poorer than that of IOP taken with the Goldmann tonometer, but is comparable with that of other non-Goldman-type tonometers currently available.
Publisher: Informa UK Limited
Date: 2006
Publisher: Elsevier BV
Date: 03-2022
Publisher: Informa UK Limited
Date: 27-04-2015
Publisher: Elsevier BV
Date: 2018
Publisher: Elsevier BV
Date: 05-2012
Publisher: Springer Science and Business Media LLC
Date: 11-2017
Publisher: Informa UK Limited
Date: 2012
Start Date: 2021
End Date: 2024
Funder: National Natural Science Foundation of China
View Funded ActivityStart Date: 2012
End Date: 2014
Funder: National Natural Science Foundation of China
View Funded ActivityStart Date: 2015
End Date: 2018
Funder: National Natural Science Foundation of China
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