Results 71 to 80 of about 1,571 (276)
Three-dimensional crack growth in multi-layered architectures for automotive plain bearings
, 2009 The assessment of shielding and anti-shielding effects on crack growth in multi-layered architectures is achieved using elasto-plastic finite element models.
Burke-Veliz, A. +2 more
core
Simulation of fatigue behaviour in fusion welded 2024-T351 [PDF]
, 2004 A model has been developed to predict short crack fatigue life in the fusion zone of Metal Inert Gas (MIG) welded 2024-T351, based on the observed propensity for complex, multiple cracking processes in this region.
Lefebvre, F. +3 more
core
Transient dislocation emission from a crack tip
, 2013 Transient nature of dislocation emission from a crack tip gives a new twist to the study of brittle-to-ductile transition. In a class of materials, only the dislocations traveling at high speed may escape from the crack tip.
Yang, Wei; Tang, Jia-cai; Ing, Yi-shyong; Ma, Chien-ching +1 more
core +1 more source
Advanced Science, EarlyView.This study presents an ultrasound‐responsive nanoplatform, CS‐BT@MZ@NEs, with a BaTiO3/Mn‐Zif‐8 core and a chondroitin sulfate coating for Golgi targeting. By leveraging neutrophil hitchhiking, it enables targeted delivery to infection sites. Under ultrasound stimulation, CS‐BT@MZ@NEs generates ROS and modulates Golgi pH to activate cGAS–STING ...
Shicheng Huo +7 more
wiley +1 more source
Mixing‐Driven Defects and Composition Evolution in Multi‐Material Metal Additive Manufacturing
Advanced Science, EarlyView.Operando synchrotron X‐ray imaging coupled with high‐fidelity multiphysics modeling uncovers how inter‐material mixing reshapes keyhole dynamics and drives distinct pore‐formation pathways in multi‐material laser powder bed fusion (LPBF). Composition‐dependent instabilities trigger defects, whereas rescanning suppresses porosity and homogenizes Cu ...
Zhilang Zhang +5 more
wiley +1 more source
Nonuniformly Loaded Stack of Antiplane Shear Cracks in One-Dimensional Piezoelectric Quasicrystals
Advances in Materials Science and Engineering, 2018 Representations in a closed form are derived, using an extension to the method of dislocation layers, for the phonon and phason stress and electric displacement components in the deformation of one-dimensional piezoelectric quasicrystals by a ...
G. E. Tupholme
doaj +1 more source
Hierarchical Twin Networks Enable Exceptional Strength and Fracture Toughness in Titanium
Advanced Science, EarlyView.A commercial‐purity titanium with hierarchical ultrafine twin structures delivers an exceptional combination of fracture toughness (KJIc) of 187 MPa·m1/2 and specific yield strength of 140 MPa·cm3·g−1, in which pre‐engineered high‐density twin boundaries stimulate massive and
Xiao‐Wei Zou +3 more
wiley +1 more source
3D Crack-tip Microscopy: Illuminating Micro-Scale Effects on Crack-Tip Behavior
, 2011 Traditionally the driving force for crack growth is described in terms of global parameters which, for continua, nevertheless reflect the local conditions at the crack-tip.
Philip J. Withers +1 more
core +1 more source
Advanced Science, EarlyView.An intracellular magneto‐mechanical platform utilizing MSC‐targeted nanomotors is developed. After intra‐articular delivery, these nanomotors target endogenous BMSCs and are actuated within lysosomes to execute trans‐planar rotational‐bouncing motions under a rotating‐fluctuating 3D magnetic field, generating amplified mechanical stimulation.
Zhenguang Li +7 more
wiley +1 more source
A numerical study of crack shielding/anti-shielding in layered architectures
, 2019 Previous research has indicated the potential effectiveness of adopting micro-scale layered architectures to improve the fatigue damage resistance of coatings.
Reed, Philippa +5 more
core +1 more source