Results 11 to 20 of about 392,474 (265)

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 ...
G. Meneghetti, M. Ricotta, G. Pitarresi
doaj   +3 more sources

Study on mechanical property and adhesive strength of ice under a low temperature condition

open access: yesNihon Kikai Gakkai ronbunshu, 2017
Icing is one of important problems that have to be prevented in jet engine of airplane. If thin ice layer deposited on the surface of blade is detached in fight, the debris is scattered and then impacts to a rear stage blade.
Yusuke YASUDA, Masayuki ARAI
doaj   +1 more source

Visualizing the crack driving force through fluid analogy

open access: yesJournal of the Mechanical Behavior of Materials, 2019
It is shown that the crack driving force for a fundamental antiplane crack problem is analogous to the limiting case of the force acting on an ideal fluid on free streamlines that form at the ends of flow around two parallel plates.
Unger David J.
doaj   +1 more source

Effect of hold time on creep-fatigue crack propagation in lead-free solder

open access: yesNihon Kikai Gakkai ronbunshu, 2015
Crack propagation tests of lead-free solder were conducted using center-notched plates under load- and displacement-controlled conditions of cyclic tension-compression. Four waveforms were adopted for tests: pp waveform having fast loading and unloading,
Keisuke TANAKA   +4 more
doaj   +1 more source

Crack Driving Force Calculation for a Railway Wheel Considering Thermoplastic Properties of the Wheel Material [PDF]

open access: yesInternational Journal of Railway Research, 2020
In this paper, the driving force calculation of a cracked railway wheel is studied, and the effects of thermal loads due to braking, train speed, and elastic-plastic material model are considered.
Azade Haidari, Parisa Hosseini Tehrani
doaj  

An extended J-integral for evaluating fluid-driven cracks in hydraulic fracturing

open access: yesJournal of Rock Mechanics and Geotechnical Engineering, 2018
J-integral has served as a powerful tool in characterizing crack tip status. The main feature, i.e. path-independence, makes it one of the foremost fracture parameters.
Huifang Song, Sheik S. Rahman
doaj   +1 more source

An IGA based domain integral method for the evaluation of the J-integral using the singular patch method

open access: yesMechanical Engineering Journal, 2022
In this paper, a domain integral method to evaluate the J-integral along with a singular patch method for three-dimensional linear elastic fracture mechanics analyses using Isogeometric analysis (IGA) are presented.
Omar TABAZA   +2 more
doaj   +1 more source

Some results on top local cohomology modules with respect to a pair of ideals [PDF]

open access: yesMathematica Bohemica, 2020
Let $I$ and $J$ be ideals of a Noetherian local ring $(R,\mathfrak m)$ and let $M$ be a nonzero finitely generated $R$-module. We study the relation between the vanishing of $H_{I,J}^{\dim M}(M)$ and the comparison of certain ideal topologies.
Saeed Jahandoust, Reza Naghipour
doaj   +1 more source

A new three-dimensional J-integral formulation for arbitrary load history and finite deformation

open access: yesNihon Kikai Gakkai ronbunshu, 2018
In this paper, a new formulation of three-dimensional J-integral for the evaluation of elastic-plastic fracture problem is presented. It is known that the J-integral represents the energy release rate per unit crack extension.
Koichiro ARAI   +2 more
doaj   +1 more source

Cycle integrals of the $j$-function on Markov geodesics

open access: yesCommentarii Mathematici Helvetici, 2022
We give asymptotic upper and lower bounds for the real and imaginary parts of cycle integrals of the classical modular j -function along geodesics that correspond to Markov irrationalities.
openaire   +3 more sources

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