Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Vivien J. Challis"'
Publikováno v:
Materials, Vol 16, Iss 14, p 5076 (2023)
Force sensors on climbing robots give important information to the robot control system, however, off-the-shelf sensors can be both heavy and bulky. We investigate the optimisation of a lightweight integrated force sensor made of piezoelectric materi
Externí odkaz:
https://doaj.org/article/d3aef42657634decbf199bfefe2abb2b
Autor:
Vivien J. Challis, Xiaoxue Xu, Angela Halfpenny, Andrew D. Cramer, Martin Saunders, Anthony P. Roberts, T.B. Sercombe
Publikováno v:
Acta Materialia. 254:119021
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bece54e97c8e53d0dbabc4725aed1e2
https://doi.org/10.1016/j.actamat.2023.119021
https://doi.org/10.1016/j.actamat.2023.119021
An optimised family of anisotropic microstructures with application to functionally graded materials
Publikováno v:
International Journal of Solids and Structures. 171:17-29
We design an anisotropic, multiparametric family of optimised microstructures. The microstructures are parametrised by their Young's moduli in the three axial directions. The family is smooth, in the sense that the features are similar enough for sha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9490bdfb6ba216761c49711ad8c6de12
https://doi.org/10.1016/j.ijsolstr.2019.05.009
https://doi.org/10.1016/j.ijsolstr.2019.05.009
Publikováno v:
Smart Materials and Structures. 30:105016
We present the piezoelectric properties of multi-poled network microstructures based on cross, Gibson-Ashby and face-centred cubic base cells at a range of solid fractions and with different polarisation profiles. Piezoelectric properties are determi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::21baadefe645734f198f3139f02cabe1
https://doi.org/10.1088/1361-665x/ac1c1b
https://doi.org/10.1088/1361-665x/ac1c1b
Failure modes in high strength and stiffness to weight scaffolds produced by Selective Laser Melting
Autor:
Peter D. Lee, Richard Green, Vivien J. Challis, Ziyu Zhang, Sheng Yue, Timothy B. Sercombe, Xiaoxue Xu
Publikováno v:
Materials & Design. 67:501-508
The production of porous scaffold structures using additive manufacturing is becoming widespread, however a detailed understanding of the scaffold failure mechanisms is lacking. In this research, Selective Laser Melting (SLM) is used to produce Ti-6A
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ac7e4efbb40503e57e733407d4d047b
https://doi.org/10.1016/j.matdes.2014.10.063
https://doi.org/10.1016/j.matdes.2014.10.063
Autor:
Anthony P. Roberts, Lai-Chang Zhang, Joseph F. Grotowski, Vivien J. Challis, Xiaoxue Xu, Timothy B. Sercombe
Publikováno v:
Materials & Design. 63:783-788
Selective Laser Melting (SLM) was used to fabricate scaffolds using the titanium alloy Ti–6Al–4V. Two types of high porosity open-cell structures were manufactured: the first built from topology optimised designs with maximised stiffness, and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::182162d97d77cbb27b547dfe35dbb120
https://doi.org/10.1016/j.matdes.2014.05.064
https://doi.org/10.1016/j.matdes.2014.05.064
Publikováno v:
Structural and Multidisciplinary Optimization. 49:315-325
We present a Graphics Processing Unit (GPU) implementation of the level set method for topology optimization. The solution of three-dimensional topology optimization problems with millions of elements becomes computationally tractable with this GPU i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf9f8aae88e701db28c436da17197a21
https://doi.org/10.1007/s00158-013-0980-z
https://doi.org/10.1007/s00158-013-0980-z
Publikováno v:
Journal of biomechanical engineering. 139(3)
We present a new approach to designing three-dimensional, physically realizable porous femoral implants with spatially varying microstructures and effective material properties. We optimize over a simplified design domain to reduce shear stress at th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::146f53d57a7a75b4be27d6a72327c81b
https://pubmed.ncbi.nlm.nih.gov/27996078
https://pubmed.ncbi.nlm.nih.gov/27996078
Publikováno v:
International Journal of Solids and Structures. 49(23-24):3397-3408
We compute Pareto fronts that estimate the upper bounds of the bulk modulus and fluid permeability cross-property space for periodic porous materials over a range of porosities. The fronts are generated numerically using topology optimization, which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ae7c9e27929a1e088c3a76252d32c372
Autor:
G.N. Grayson, Lai-Chang Zhang, G. B. Schaffer, Timothy B. Sercombe, Joseph F. Grotowski, Anthony P. Roberts, Vivien J. Challis
Publikováno v:
Acta Materialia. 59:5257-5265
We show that overlapping sphere packs provide useful models for the microstructure and elastic properties of sintered bronze powders. In the early stages of sintering the dilated sphere (or cherry-pit) model is superior, while at low porosities the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ecb23345526b6fe4a70645de53ad96d
https://doi.org/10.1016/j.actamat.2011.05.002
https://doi.org/10.1016/j.actamat.2011.05.002