Results 71 to 80 of about 1,131,526 (296)

Meshless methods: theory and application in 3D fracture modelling with level sets [PDF]

, 2010
Accurate analysis of fracture is of vital importance yet methods for effetive 3D calculations are currently unsatisfactory. In this thesis, novel numerical techniques are developed which solve many of these problems. This thesis consists two major parts:
ZHUANG, XIAOYING
core  

Investigation of crack propagation in X38CrMoV5 (AISI H11) tool steel at elevated temperatures [PDF]

, 2010
A method is developed to evaluate the surface fatigue damage of hot forming tools (forging, HPDC) that undergo thermo mechanical loading and environmental attack.
Rezaï-Aria, Farhad, Mabru, Catherine, Shah, Masood   +2 more
core   +1 more source

OntOMat: Toward Ontology‐Based Product and Process Design Engineering and Optimization Solutions Fueling Circular Value Chains

Advanced Engineering Materials, EarlyView.
The OntOMat ontology establishes a structured framework for polymer matrix fiber reinforced composite materials, integrating manufacturing processes, characterization methods, and multiscale design through the VDI/VDE 3682 formalized process description standard.
Nicolas Christ, Jörg Hohe, Martin Kördel, Michael Giese, Niklas Toffert, Christian Seidel, Olaf Rehme, Patrik Schneider, Oliver Focke, Elie Abi Aoun, Claas Falldorf, Beñat Gutierrez, Alexandra Kühn, Sven Torstrick-von der Lieth, Christoph Herden, Erik Johannsen, Jan‐Uwe R. Schmidt, Felix Winkelmann, Andreas Schott, Daniel Schott   +19 more
wiley   +1 more source

A model for discriminating the penetration propagation of hydraulic fractures considering the influence of injection parameters

Meikuang Anquan
Based on the theory of fluid flow and solid elastic deformation as well as the criterion of the propagation path when hydraulic fracture meets natural fracture, a model for the propagation of hydraulic fracture through layer is established in order to ...
Runxu ZHANG, Yifeng GUO, Chao LI
doaj   +1 more source

Fracture propagation laws of staged hydraulic fracture in fractured geothermal reservoir based on phase field model

International Journal of Coal Science & Technology, 2023
Hydraulic fracturing is widely used in geothermal resource exploitation, and many natural fractures exist in hot dry rock reservoirs due to in-situ stress and faults.
Genbo Peng
doaj   +1 more source

Causes of scatter in high rate fracture testing of polymers [PDF]

, 2013
A method based on the measurement of failure time is being developed by the European Structural Integrity Society to determine high rate fracture toughness of polymers.
Horsfall I., Horsfall, Ian, AGNELLI, Silvia, Agnelli, S.   +3 more
core   +1 more source

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

Advanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source

Fracture initiation mechanism of true triaxial fracture grouting under stress and crack influence

Meitan xuebao
The deep formation are characterized by complex stress environments and intricate fracture distributions, resulting in unclear fracture propagation behavior during split grouting under triaxial stress and an empirical approach to parameter design.
Jucai CHANG, Longquan QIAO, Junru ZHAO, Lianghuan YAN, Yijun GUO, Wenbao SHI   +5 more
doaj   +1 more source

Fracture mechanics of volcanic eruptions [PDF]

, 2009
Seismology is a key tool in the forecasting of volcanic eruptions. The onset of an eruption is often preceded and accompanied by an increase in local seismic activity, driven by fracturing within the edifice.
Matthews, C., Matthews, C
core  

Quasi-static crack propagation by Griffith's criterion [PDF]

, 2008
We consider the propagation of a crack in a brittle material along a prescribed crack path and define a quasi-static evolution by means of stationary points of the free energy. We show that this evolution satisfies Griffith's criterion in a suitable form
Negri, Matteo, Ortner Christoph, Ortner, Christoph, Negri, M, Ortner, C   +4 more
core   +1 more source