Results 261 to 270 of about 50,205 (297)

Brittle-ductile transition in intrinsic fracture behavior of crystals

Physical Review Letters, 1990
A transition of brittle to ductile propagation of a sharp crack in a crystal is observed by molecular-dynamics simulation and the transition mechanism shown to be the emission of dislocations at the crack tip and activation of specific slip systems appropriate to the crystal structure. Implications for extension of current theories are discussed.
, Cheung, , Yip
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Numerical modelling of brittle–ductile transition with the MUFITS simulator

Computational Geosciences, 2020
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Notch effect and brittle-ductile transition

Materials Science, 1998
We present the fresults of the investigation of the effect of notches on the brittle-ductile transition in the process of fracture of structural materials. It is shown that the local elastoplastic state of a material in the vicinity of the notch can be described by using the corresponding stress intensity factorsK I σ , strain intensity factorsK i e ...
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A study of brittle‐ductile transition in polyethylene

Polymer Engineering & Science, 1997
AbstractThe brittle‐ductile transition temperatures (BDTT) of polyethylenes with different degrees of crystallinity, such as LDPE, LLDPE, MDPE, and HDPE, were evaluated using Charpy impact test. The effect of the specimen cooling condition on the BDTT was a main concern in the study.
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A model for brittle-ductile transitions in polymers

Journal of Materials Science, 1982
A model is proposed for mixed-mode crack propagation in materials which show shear lips on the fracture surface. The model is shown to predict the existance of a “brittle-ductile” transition as the specimen thickness is decreased. The predictions of the model are compared with published experimental data on a number of polymers including polycarbonate,
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An analytical force and energy model for ductile-brittle transition in ultra-precision grinding of brittle materials

International Journal of Mechanical Sciences, 2022
Zhengding Zheng, Chuangting Lin, Qinghua Wang   +2 more
exaly  

Experimental investigation and micromechanical modeling of the brittle-ductile transition behaviors in low-porosity sandstone

International Journal of Mechanical Sciences, 2020
Qi-Zhi Zhu
exaly  

Effect of cutting tool geometries on the ductile-brittle transition of monocrystalline sapphire

International Journal of Mechanical Sciences, 2018
Hao Wang, Qingliang Zhao, Junmin Xue
exaly  

Maximum undeformed equivalent chip thickness for ductile-brittle transition of zirconia ceramics under different lubrication conditions

International Journal of Machine Tools and Manufacture, 2017
Min Yang, Changhe Li, Dongzhou Jia
exaly  

On the Activation Energy for the Brittle/Ductile Transition

physica status solidi (b), 1997
A. Hartmaier, P. Gumbsch
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