Results 21 to 30 of about 19,209,998 (295)

Temperature Dependence of the Fracture Toughness JC of Random Fibrous Material

open access: yesApplied Sciences, 2020
The temperature dependence of the fracture toughness JC of a three-dimensional (3D) random fibrous (RF) material, with a porosity of 87% along the through-the-thickness (TTT) direction, was investigated using experiments and the finite element method ...
Datao Li, Yan Li, Wenshan Yu
doaj   +1 more source

Isolated bidirectional DC-DC Converter: A topological review

open access: yese-Prime: Advances in Electrical Engineering, Electronics and Energy
Bidirectional DC-DC converters (BDCs) are certainly an important power electronic converter for managing bidirectional power flow in various applications.
Mohammad Aslam Alam   +2 more
doaj   +1 more source

A Numerical Analysis of Selected Elastic-Plastic Fracture Parameters for DEN(T) Plates under Plane Strain Conditions

open access: yesInternational Journal of Applied Mechanics and Engineering, 2017
This paper provides a numerical analysis of selected parameters of fracture mechanics for double-edge notched specimens in tension, DEN(T), under plane strain conditions. The analysis was performed using the elastic-plastic material model.
M. Graba
doaj   +1 more source

Improvement of a Cycle J Integral for CT Specimens [PDF]

open access: yesJournal of Engineering for Gas Turbines and Power, 1985
The cycle J integral formula for CT specimens has been improved as follows: ΔJ=(2/Bb)(α1•U + α2•ΔP•Δδ) + (2/Bb)Ue−1.2025a/w + 0.6233 for 0.3≤a/w≤0.53; ΔJ=(2/Bb)(α1•U + α2•ΔP•Δδ) + (2/Bb)Ue−0.02 sin[(π/0.23)(a/w−0.53)] for 0.53<a/w<0.95. This formula is applicable to the fatigue crack propagation range of 0.3≤a/w<0.95.
Liu Shao-Lun, Xie Ji-Zhou
openaire   +1 more source

Cyclic J-integral using the linear matching method [PDF]

open access: yes, 2013
The extended version of the latest Linear Matching Method (LMM) has the capability to evaluate the stable cyclic response, which produces cyclic stresses, residual stresses and plastic strain ranges for the low cycle fatigue assessment with cyclic load ...
Chen, Haofeng, Chen, Weihang
core   +4 more sources

On relation between J-integral and heat energy dissipation at the crack tip in stainless steel specimens

open access: yesFracture and Structural Integrity, 2019
In this paper, an experimental procedure to evaluate the elastic-plastic J-integral at the tip of a fatigue crack is presented. According to this new approach, the elastic component of the J-integral is derived from Thermoelastic Stress Analysis, while ...
Giovanni Meneghetti   +2 more
doaj   +3 more sources

ENERGY INVARIANTS IN THEORY OF ELASTOPLASTIC CRACKS

open access: yesНаука и техника, 2017
The paper considers a problem on a rectilinear crack in hardening elastoplastic material with load which is applied at infinity under plane-strain deformation conditions.
M. A. Hundzina
doaj   +1 more source

Three-dimensional crack analyses under thermal stress field by XFEM using only the Heaviside step function

open access: yesMechanical Engineering Journal, 2020
A three-dimensional crack analysis method based on XFEM using only the Heaviside step function was applied to heat transfer and subsequent thermal stress analyses of cracked structures. The proposed method employs tip elements to discretize the weak form
Toshio NAGASHIMA
doaj   +1 more source

Ovarian Sex Cord Stromal Tumors in Children and Adolescents—The European Standard Clinical Practice Recommendations

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT As part of the European Cooperative Study Group for Paediatric Rare Tumours initiative, we developed standard clinical practice guidelines for ovarian sex cord stromal tumors, based on comprehensive national and international cohort analyses, literature review, and a final expert consensus conference.
Dominik T. Schneider   +15 more
wiley   +1 more source

Polynomial Estimation of J-integral for Through-thickness Crack in Elastic Perfectly-Plastic Conditions

open access: yesApplications of Modelling and Simulation, 2021
Through the means of finite element analysis, J-integral for a straight through-thickness crack has been consistently reported to decrease along the crack front with the maximum and minimum values are at the midplane and the free-surface, respectively ...
Norwahida Yusoff, Feizal Yusof
doaj  

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