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pro vyhledávání: '"Fleck N"'
Bio-chemical reactions enable the production of biomimetic materials such as sandstones. In the present study, microbiologically-induced calcium carbonate precipitation (MICP) is used to manufacture laboratory-scale specimens for fracture toughness m
Externí odkaz:
http://arxiv.org/abs/2311.07785
The presence of hydrogen traps within a metallic alloy influences the rate of hydrogen diffusion. The electro-permeation (EP) test can be used to assess this: the permeation of hydrogen through a thin metallic sheet is measured by suitable control of
Externí odkaz:
http://arxiv.org/abs/2306.07666
Publikováno v:
Journal of Applied Mechanics, 2021
Recent advances in additive manufacturing methods make it possible, for the first time, to manufacture complex micro-architectured solids that achieve desired stress versus strain responses. Here, we report experimental measurements and associated fi
Externí odkaz:
http://arxiv.org/abs/2011.07496
Publikováno v:
International Journal of Mechanical Sciences, 2020
We propose a local reinforcement technique for lattices in the vicinity of a stress-raiser such as a notch, in order to elevate the macroscopic strength and ductility. A spatially non-uniform waviness distribution of sinusoidally-shaped struts is ass
Externí odkaz:
http://arxiv.org/abs/2010.05634
Publikováno v:
Journal of the Mechanics and Physics of Solids, 141:103958, 2020
An assessment is made of the J-integral test procedure for initial crack growth in an open-cell aluminium alloy foam by combining finite element (FE) simulations with experiment. It is found experimentally that a zone of randomly failed struts develo
Externí odkaz:
http://arxiv.org/abs/2004.01053
Publikováno v:
Journal of Applied Mechanics (2019)
The shear strength of a pre-cracked sandwich layer is predicted, assuming that the layer is linear elastic or elastic-plastic, with yielding characterized by either J2 plasticity theory or by a strip-yield model. The substrates are elastic and of dis
Externí odkaz:
http://arxiv.org/abs/1909.03688
Publikováno v:
Acta Materialia 178:122-134, 2019
Additive manufacture and rapid prototyping are versatile methods for the generation of lattice materials for applications in the creep regime. However, these techniques introduce defects that can degrade the macro-scopic creep strength. In the presen
Externí odkaz:
http://arxiv.org/abs/1908.03078
Publikováno v:
Acta Materialia (2019), 171, 190-200
Rapid prototyping is an emerging technology for the fast make of engineering components. A common technique is to laser cut a two-dimensional (2D) part from polymethyl methacrylate (PMMA) sheet. However, both manufacturing defects and design defects
Externí odkaz:
http://arxiv.org/abs/1904.10362