Results 31 to 40 of about 49,081 (299)

An Athermal Brittle to Ductile Transition in Amorphous Solids

, 2011
Brittle materials exhibit sharp dynamical fractures when meeting Griffith's criterion, whereas ductile materials blunt a sharp crack by plastic responses.
Dauchot, Olivier, Karmakar, Smarajit, Procaccia, Itamar, Zylberg, Jacques   +3 more
core   +3 more sources

Suppressing scratch-induced brittle fracture in silicon by geometric design modification of the abrasive grits

Journal of Materials Research and Technology, 2019
The overarching goal of this research was to investigate the application of spherically shaped abrasive particles in achieving ductile-mode cutting. Scratching experiments were carried out to assess the differences between arbitrarily and spherically ...
Andrii M. Kovalchenko, Saurav Goel, Islam M. Zakiev, Evgeniy A. Pashchenko, Rajab Al-Sayegh   +4 more
doaj   +1 more source

Probing the Statistical Validity of the Ductile-to-Brittle Transition in Metallic Nanowires Using GPU Computing

, 2013
We perform a large-scale statistical analysis (> 2000 independent simulations) of the elongation and rupture of gold nanowires, probing the validity and scope of the recently proposed ductile-to-brittle transition that occurs with increasing nanowire ...
Cummings, Peter T., French, William R., Iacovella, Christopher R., Pervaje, Amulya K., Santos, Andrew P.   +4 more
core   +1 more source

Deformation mechanisms in nanotwinned metal nanopillars [PDF]

, 2012
Nanotwinned metals are attractive in many applications because they simultaneously demonstrate high strength and high ductility, characteristics that are usually thought to be mutually exclusive.
Gao, Huajian, Greer, Julia R., Jang, Dongchan, Liao, Xiaoyan   +3 more
core   +1 more source

Experimental Study on the Brittle-Ductile Response of a Heterogeneous Soft Coal Rock Mass under Multifactor Coupling

Geofluids, 2019
After a gas drainage event causes different degrees of initial porosity in the coal seam, the heterogeneity of the coal mass becomes much more obvious. In this paper, soft coal testing samples with different degrees of heterogeneity were prepared first ...
Weijian Yu, Genshui Wu, Baifu An, Ping Wang   +3 more
doaj   +1 more source

Brittle-to-ductile transition of PLA induced by macromolecular orientation

eXPRESS Polymer Letters, 2020
This work deals with the influence of biaxial orientation on the mechanical behavior of Polylactide (PLA) films. Comparisons between a crystallizable grade and a non-crystallizable one have been made in order to separate the effect of macromolecular ...
S. Xu, J.-F. Tahon, I. De-Waele, G. Stoclet, V. Gaucher   +4 more
doaj   +1 more source

Discrete Element Analysis of Ice-Induced Vibrations of Offshore Wind Turbines in Level Ice

Journal of Marine Science and Engineering, 2023
Self-excited vibrations of offshore structures interacting with sea ice, characterized by low frequency and high amplitudes, pose significant hazards to offshore wind turbines (OWTs) in cold seas. This study employs the discrete element method (DEM) with
Xue Long, Lu Liu, Shunying Ji
doaj   +1 more source

Analytical modeling of surface roughness in precision grinding of particle reinforced metal matrix composites considering nanomechanical response of material [PDF]

, 2019
Grinding is usually applied for particle reinforced metal matrix composites (PRMMCs) to achieve high ground surface quality. However, the surface quality especially surface roughness is difficult to predict theoretically due to different mechanical ...
Cai, Rui, Huang, Chuanzhen, Wang, Jun, Yao, Peng, Zhang, Zhenzhong, Zhu, Hongtao   +5 more
core   +1 more source

Ductile-to-brittle transition in aluminum alloys

Materials Research Letters
Here we exploited room (298 K) – and cryogenic (77 K) – temperature mechanical behaviors of binary Al-Mg alloys across a wide range of magnesium concentration (i.e. 2.8–13.1 at.%). We observed ductile-to-brittle transition at 77 K as Mg content increases
Dengshan Zhou, Xiuzhen Zhang, Xueyong Pang, Zitong Zhao, Xinren Chen, Shaolou Wei, Chao Yang, Wu Gong, Stefanus Harjo, Rongguang Li, Deliang Zhang, Gaowu Qin   +11 more
doaj   +1 more source

In-situ experiment on critical thickness of brittle-ductile transition of single-crystal silicon

工程科学学报, 2019
Single-crystal silicon is widely used in optoelectronics and micro-electromechanical systems because of its unique physical and chemical properties.
LIU Bing, XU Zong-wei, LI Rui, HE Zong-du   +3 more
doaj   +1 more source