Results 71 to 80 of about 236,901 (237)

Mixed-Mode Fracture Behavior of Penta-Graphene: A Molecular Dynamics Perspective on Defect Sensitivity and Crack Evolution

Solids
This study employs molecular dynamics (MD) simulations to investigate the mechanical response and fracture behavior of penta-graphene, a novel two-dimensional carbon allotrope composed entirely of pentagonal rings with mixed sp2–sp3 hybridization and ...
Afia Aziz Kona, Aaron Lutheran, Alireza Tabarraei   +2 more
doaj   +1 more source

Microstructural modelling of creep crack growth from a blunted crack [PDF]

, 1998
The effect of crack tip blunting on the initial stages of creep crack growth is investigated by means of a planar microstructural model in which grains are represented discretely. The actual linking-up process of discrete microcracks with the macroscopic
Giessen, E. van der, Onck, P.R.,, Onck, P.R., Giessen, E. van der; id_orcid, Giessen, E. van der,   +4 more
core  

Heterogeneous Exhumation Mechanisms in Neoproterozoic Collisional Metamorphism: P–T Constraints From Pelotas and Punta del Este Terranes, Southern Brazil and Uruguay

Geological Journal, EarlyView.
Petrography, thermobarometry, and pseudosection modelling reveal peak metamorphic conditions of 3–7.5 kbar and 520°C–800°C in Tonian‐Cryogenian orthogneisses of the Dom Feliciano Belt. Metamorphic field gradients of 27°C/km–39°C/km and variable exhumation mechanisms support correlation of these units as remnants of a Himalayan‐type Piratini Orogeny ...
Thaiane Niederauer‐Santos, Carla Cristine Porcher, Daniel Triboli Vieira, Edinei Koester, Diego Jaldín, Karina Luengo, Luisa Caon   +6 more
wiley   +1 more source

Carrier Mobility Enhancement in Two‐Dimensional Semiconductor

Interdisciplinary Materials, EarlyView.
In this review, we comprehensively describe recent progress in carrier mobility enhancement strategies for 2D semiconductor‐based field‐effect transistors considering the role of intrinsic defects, electrode contact interfaces, dielectric engineering, and lattice strain engineering.
Huchanghui Zuo, Yuehao Li, Xiangkai Liu, Chao Tan, Guohua Hu, Mingdong Dong, Zegao Wang   +6 more
wiley   +1 more source

Mixed-mode Ⅰ/Ⅲ crack-tip configuration identification and FAD assessment for process pressure equipment

Meikuang Anquan
During service, pressure equipment is frequently subjected to complex loading conditions such as start-stop fluctuations, assembly misalignments, and bending-torsion coupling, which can readily induce mixed-mode Ⅰ/Ⅲ cracks.
Lu WANG, Yujun XIE, Kaile WANG, Bingxue WANG   +3 more
doaj   +1 more source

Influence of corrosion and creep on intergranular fatigue crack path in 2XXX aluminium alloys [PDF]

, 2010
In this paper, two examples of the influence of time-dependent processes on crack path in two 2XXX aluminium alloys are presented. The first example is concerned with corrosion–fatigue crack growth resistance of a 2024 T351 alloy cracked in the S–L ...
Odemer, Grégory, Hénaff, Gilbert, Menan, Frédéric   +2 more
core   +1 more source

The Endothelial CXCR Family in Vascular Health and Disease

iNew Medicine, EarlyView.
ABSTRACT Endothelial cells (ECs) form the dynamic interface between blood and tissue, serving as key regulators of vascular homeostasis, inflammation, and repair. Among the molecular systems governing endothelial behavior, the C‐X‐C motif chemokine receptor (CXCR) family—originally characterized in immunology for its roles in leukocyte trafficking and ...
Zhiming Wu, Yandi Wu, Suowen Xu, Yu Huang, Li Wang   +4 more
wiley   +1 more source

High-temperature creep behaviour and deformation mechanism of a high-concentration Re/Ru single-crystal nickel-based alloy

Journal of Materials Research and Technology
In this study, the deformation and damage mechanisms of a high-concentration Re/Ru single-crystal nickel-based alloy at ultrahigh temperatures are studied via creep performance tests, microstructural observations and dislocation configuration diffraction
Ning Tian, Guoqi Zhao, Zhongzhen Shi, Bin Li, Xiaojuan Shang, Shunke Zhang, Huajin Yan   +6 more
doaj   +1 more source

Fatigue crack shielding in plain bearings under large scale yielding

, 2010
Multi-layered bearing systems used in the automotive industry show shielding and antishielding effects that reduce or amplify the crack driving force under large-scale yielding conditions. Using finite element analysis, it is shown that shielding in such
S. Syngellakis, P.A.S. Reed, Burke-Veliz, A., Reed, P.A.S., Syngellakis, S., A. Burke-Veliz   +5 more
core   +1 more source

Microstructure tailoring and enhanced fracture toughness in as-extruded Mg-9Gd-4Y-1Zn-0.5Zr alloy via lamellar γ’ phase

Journal of Magnesium and Alloys
In this study, by adjusting the homogenization process, numerous lamellar-shaped γ’ phases are generated and uniformly distributed throughout the grain interior within as-extruded Mg-9Gd-4Y-1Zn-0.5Zr (wt.%) alloy, leading to a remarkable increase ...
Zhikang Ji, Wanting Sun, Xiaoguang Qiao, Lin Yuan, Fuguan Cong, Guojun Wang, Zhuoran Zeng, Mingyi Zheng, Shiwei Xu   +8 more
doaj   +1 more source