Results 41 to 50 of about 21,684 (301)

Application of material forces and path independent integrals to the prediction of crack initiation and crack paths

open access: yesProcedia Structural Integrity, 2018
Abstract Next to the shape of a growing crack, it is of importance to predict the initiation of new cracks, especially in structures with stress concentrations due to e.g. holes or notches. In the past, different criteria for crack initiation have been discussed. Furthermore, cracks growing in the vicinity of such stress concentrations in general are
Paul Judt, Andreas Ricoeur
openaire   +1 more source

Fatigue crack growth of aluminium alloy 7075-T651 under non-proportional mixed mode I and II loads [PDF]

open access: yesFracture and Structural Integrity, 2016
This study aims to investigate fatigue growth behaviour in AA7075-T651 under non-proportional mixed mode I and II loads. Fatigue tests were performed under cyclic tension and torsion using a thin-walled tubular specimen with a key-hole style crack ...
Xiaobo Yu, Ling Li, Gwenaelle Proust
doaj   +2 more sources

Small crack growth behavior in selective laser melted TC4 alloy

open access: yesCailiao gongcheng, 2023
The three-dimensional small crack growth behavior of selective laser melting (SLM) TC4 alloy was investigated by in-situ observation fatigue test method, and the long crack growth curve was measured by load reduction method under the same experimental ...
WU Liangliang, JIAO Zehui, YU Huichen
doaj   +1 more source

Investigation of Crack Propagation and Failure of Liquid-Filled Cylindrical Shells Damaged in High-Pressure Environments

open access: yesJournal of Marine Science and Engineering
Cylindrical shell structures have excellent structural properties and load-bearing capacities in fields such as aerospace, marine engineering, and nuclear power.
Hongshuo Zhang   +5 more
doaj   +1 more source

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

open access: yesFEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

On crack path stability in a layered material

open access: yes, 1997
Crack paths in an elastic layer on top of a substrate are considered. Crack growth is initiated from an edge crack in the layer. The plane of the initially straight crack forms an angle to the free surface.
Gunnars, J (reprint author), LULEA UNIV TECHNOL,DIV SOLID MECH,LULEA,SWEDEN.   +3 more
core   +1 more source

The effect of weld residual stresses and their re-distribution with crack growth during fatigue under constant amplitude loading [PDF]

open access: yes, 2010
In this work the evolution of the residual stresses in a MIG-welded 2024-T3 aluminium alloy M(T) specimen during in situ fatigue crack growth at constant load amplitude has been measured with neutron diffraction.
Lin, J.   +13 more
core   +1 more source

Crack Path Prediction in Anisotropic Brittle Materials [PDF]

open access: yesPhysical Review Letters, 2005
A force balance condition to predict quasistatic crack paths in anisotropic brittle materials is derived from an analysis of diffuse interface continuum models that describe both short-scale failure inside a microscopic process zone and macroscopic linear elasticity.
Hakim, Vincent, Karma, Alain
openaire   +3 more sources

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

open access: yesMolecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

Research of Fatigue Crack Growth Based on Critical Plane Method

open access: yesMATEC Web of Conferences, 2016
To precisely simulate the path of crack growth, a simulation of crack growth progress has been presented by using the redevelopment function of ANSYS APDL and introducing the random criterion of crack propagate directions with critical plane approach ...
Mei Xiao, Ge Shihao, Zheng Ying
doaj   +1 more source

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