Results 21 to 30 of about 49,718 (313)

Mechanical Behavior and Permeability of Simulated Rock with Single Fracture under Brittle and Ductile Conditions

open access: yesJournal of MMIJ, 2019
Gypsum aggregate specimens have been used in the present study, because brittle, semi-brittle and ductile stress-strain behaviors of the specimen can be controlled only with confining stress level at the room temperature.
Sho TAKEYAMA   +3 more
doaj   +1 more source

Quantitative Analysis of Brittle Fracture for Evaluating Optical Properties in Zinc Sulfide Materials [PDF]

open access: yes한국정밀공학회지
Zinc sulfide (ZnS) is a widely used material in far-infrared and near-infrared imaging systems due to its exceptional optical transmittance properties.
Woo-Jong Yeo   +6 more
doaj   +1 more source

PM versus IM Ti-5Al-5V-5Mo-3Cr Alloy in Mechanical Properties and Fracture Behaviour [PDF]

open access: yesMaterials Research, 2019
The comparisons of mechanical properties and fracture behaviour between as-consolidated PM Ti-5553 alloy and as-cast IM Ti-5553 alloy were investigated through tensile, fracture toughness and impact toughness tests in this research.
Qinyang Zhao   +3 more
doaj   +1 more source

Existence of solutions to a regularized model of dynamic fracture [PDF]

open access: yes, 2010
Existence and convergence results are proved for a regularized model of dynamic brittle fracture based on the Ambrosio–Tortorelli approximation. We show that the sequence of solutions to the time-discrete elastodynamics, proposed by Bourdin, Larsen ...
Larsen, CJ   +8 more
core   +1 more source

Numerical simulation of particle fracture and surface erosion due to single particle impact

open access: yesAIP Advances, 2021
Particle fracture can influence material failure and removal mechanisms in high velocity impact progress. In this paper, a coupled finite element method-smooth particle hydrodynamics numerical model of a single irregularly shaped particle erode metal ...
Mingchao Du   +5 more
doaj   +1 more source

Multiscale modelling of materials chemomechanics : brittle fracture of oxides and semiconductors [PDF]

open access: yes, 2014
Fracture is one of the most challenging ‘multi-scale’ problems to model: since crack propagation is driven by the concentration of a long-range stress field at an atomically sharp crack tip, an accurate description of the chemical processes occurring in ...
De Vita, Alessandro   +4 more
core   +1 more source

Effects of Silicon on Mechanical Properties and Fracture Toughness of Heavy-Section Ductile Cast Iron

open access: yesMetals, 2015
The effects of silicon (Si) on the mechanical properties and fracture toughness of heavy-section ductile cast iron were investigated to develop material for spent-nuclear-fuel containers. Two castings with different Si contents of 1.78 wt.% and 2.74 wt.%
Liang Song   +3 more
doaj   +1 more source

Evaluation of delayed fracture property and fractography of notched specimens for high tensile strength steel

open access: yesNihon Kikai Gakkai ronbunshu, 2021
The evaluation of delayed fracture is essential owing to the widespread application of high-strength steel to reduce automotive weight. Furthermore, it is necessary to clarify the influence of local stress concentration at the notch root as delayed ...
Aya TSUJI   +3 more
doaj   +1 more source

An adaptive finite element approximation of a generalized Amrosio-Tortorelli functional [PDF]

open access: yes, 2012
The Francfort–Marigo model of brittle fracture is posed in terms of the minimization of a highly irregular energy functional. A successful method for discretizing the model is to work with an approximation of the energy.
Ortner, C.   +11 more
core   +1 more source

Predicting fracture behavior of quasi-Brittle materials using quantitatively varied geometric specimens: A design method

open access: yesMaterials & Design, 2023
Fracture toughness (KIC) and tensile strength (ft) are two important parameters for describing the fracture performance of quasi-brittle materials. The accurate determination of both parameters is crucial for the safety design and stability evaluation of
Junfeng Guan, Yue Ma, Chaopeng Xie
doaj   +1 more source

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