ORCID Profile
0000-0002-8697-242X
Current Organisation
UNSW Sydney
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Publisher: Elsevier BV
Date: 11-2022
Publisher: Informa UK Limited
Date: 14-02-2019
Publisher: Informa UK Limited
Date: 30-03-2023
Publisher: Elsevier BV
Date: 03-2023
Publisher: Informa UK Limited
Date: 22-06-2018
Publisher: Elsevier BV
Date: 06-2023
Publisher: SAGE Publications
Date: 18-03-2022
DOI: 10.1177/10812865221084311
Abstract: Current manuscript develops an analytical stress solution for the bi-material V-notches with an end hole (VO). To do so, based on the Kolosov-Muskhelishvili’s approach, while appropriate potential functions are employed, the boundary conditions of the problem are imposed to the solution to reduce the number of unknown parameters. Subsequently, the analytical stress field is derived as an asymptotic series solution, where each term possessing a constant coefficient and an order of singularity. The order of singularity for each term is obtained from the characteristic equations of the problem which is dependent on the notch geometry and material combinations. The so-called least square method (LSM) is then used to compute the constant coefficients of the asymptotic series for several case studies. Special attention is given to the bi-material notch stress intensity factors (BNSIFs) and the coefficients of the higher order terms (HOTs) in the stress series expansion. The accuracy of the presented stress solution is verified by benchmarking the results with numerical values obtained from finite element (FE) method. In this process, several notch opening angles and notch radii are simulated using the three-point bend (3PB) specimen. The developed asymptotic stress solution is demonstrated to be capable of accurately evaluating the stress field around bi-material VO-notched structures.
Publisher: SAGE Publications
Date: 28-04-2018
Abstract: In this paper, the elastic properties of functionally graded materials reinforced by single-walled carbon nanotubes are studied. Three different matrices, including steel-silicon, iron-alumina and alumina-zirconia are considered. Besides, the effects of nanotube length, radius and volume fraction on the Young’s modulus of functionally graded matrices reinforced by single-walled carbon nanotubes are investigated. It is observed that short nanotubes not only cannot increase the longitudinal elastic modulus of the matrices, but sometimes decrease their elastic modulus. Of the three selected matrices, steel-silicon matrix would have the most enhancement. Investigation of the effect of nanotube volume fraction on the mechanical properties of nanocomposites shows that increasing the volume fraction of long single-walled carbon nanotube results in increasing the elastic modulus of the nanocomposites.
Publisher: Elsevier BV
Date: 10-2022
Publisher: Elsevier BV
Date: 07-2022
Publisher: Informa UK Limited
Date: 19-03-2019
Publisher: Informa UK Limited
Date: 11-11-2021
Publisher: Informa UK Limited
Date: 23-12-2021
Publisher: Informa UK Limited
Date: 27-10-2022
Publisher: Informa UK Limited
Date: 15-03-2021
Location: Iran (Islamic Republic of)
No related grants have been discovered for Karen Alavi.