Results 71 to 80 of about 93,677 (289)

Phase field modelling of crack propagation, branching and coalescence in rocks

, 2018
We present a phase field model (PFM) for simulating complex crack patterns including crack propagation, branching and coalescence in rock. The phase field model is implemented in COMSOL and is based on the strain decomposition for the elastic energy ...
Rabczuk, Timon, Zhou, Shuwei, Zhu, Hehua, Zhuang, Xiaoying   +3 more
core   +1 more source

A Lightweight Procedural Layer for Hybrid Experimental–Computational Workflows in Materials Science

Advanced Engineering Materials, EarlyView.
We unveil a prototype hybrid‐workflow framework that fuses automatedcomputation with hands‐on experiments. Built atop pyiron, a lightweight, parameterized layer translates procedure descriptions into executable manual steps, syncing instrument settings, human interventions, and data capture in real‐time today.
Steffen Brinckmann, Sarath Menon, Raphael Röske, Johannes Steinhülb, Michael Selzer, Jan Janssen, Tilmann Hickel, Ruth Schwaiger, Jörg Neugebauer   +8 more
wiley   +1 more source

A nonlinear hydraulic fracture propagation criterion considering the fracture process zone

International Journal of Mining Science and Technology
The linear elastic hydraulic fracture criterion is not applicable to deep reservoirs when nonlinear behavior is present over an extensive zone at the fracture tip.
Senlin Luo, Guangqing Zhang, Yansen Ling, Jinmiao Tan, Renyi Qiu, Bin Sun   +5 more
doaj   +1 more source

Impact of the Weld Geometry on the Stress Intensity Factor of the Welded T-Joint Exposed to the Tensile Force and the Bending Moment

Civil and Environmental Engineering, 2015
In this paper it is analyzed the welded T-joint exposed to the axial tensile force and the bending moment, for determining the impact of the weld geometry on the fracture mechanics parameters.
Djoković Jelena M., Nikolić Ružica R., Bujňák Ján   +2 more
doaj   +1 more source

Fracture mechanics analysis of Apollo block 1 titanium alloy pressure vessels /command and service modules/ [PDF]

Linear elastic fracture mechanics analysis of titanium alloy pressure vessels of block 1 Apollo command and service ...
Ecord, G. M., Glorioso, S. V.
core   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

EXPERIMENTAL AND NUMERICAL FRACTURE TOUGHNESS OF HUMAN BONE IN LINEAR ELASTIC AND ELASTIC-PLASTIC FRACTURE MECHANICS IN VITRO

Journal of Engineering and Sustainable Development, 2016
In this search, study and investigate is done on the fracture toughness in linear elastic and elastic-plastic fracture mechanics LEFM and EPFM for each cadaveric bovine cortical bone and human cortical bone.
Bashar Awaid Bedaiwi, Ali Fawzi Abdul-Kareem   +1 more
doaj  

On a damage-plasticity approach to model concrete failure

, 2009
A damage-plasticity constitutive model for the description of fracture in plain concrete is presented. Two approaches, the local model comprising the adjustment of the softening modulus and the nonlocal model based on spatial averaging of history ...
Grassl, Peter
core   +1 more source

Enhanced Strength and Corrosion Resistance of Ti‐13Nb‐12Ta‐10Zr‐4Sn Alloy by Aging Treatment

Advanced Engineering Materials, EarlyView.
This work systematically investigates the effect of aging treatment on mechanical properties and corrosion behavior of vacuum arc‐melted Ti‐13Nb‐12Ta‐10Zr‐4Sn alloy. Owing to the increased α″ martensite, strength and corrosion resistance were significantly enhanced by aging treatment.
Yuhua Li, Rong Zhao, Qian Zhang, Haojie Wang, Yujing Liu, Lai‐Chang Zhang   +5 more
wiley   +1 more source