Results 21 to 30 of about 45,567 (235)

An Isogeometric Over-Deterministic Method (IG-ODM) to Determine Elastic Stress Intensity Factor (SIF) and T-Stress

open access: yesMathematics, 2023
In order to examine the significance of Stress Intensity Factor and T-stress (K-T parameters) in modeling pressure-cracked structures, we propose a novel method known as the Isogeometric Over-Deterministic Method IG-ODM.
Khadija Yakoubi   +5 more
doaj   +1 more source

Photoelastic study of a double edge notched plate for determination of the Williams series expansion

open access: yesVestnik of Samara University. Natural Science Series, 2021
In this work, digital photoelasticity method is applied for assessment of the crack tip linear fracture mechanics parameters for a plate with double edge notches and different other crack configurations. The overarching objective of the study is to obtain the coefficients of the Williams series expansion for the stress and displacement fields in the ...
L. V. Stepanova, K. N. Aldebeneva
openaire   +2 more sources

Mid-thickness studies of the stress intensity factor in the bulk of bainitic steel [PDF]

open access: yesFracture and Structural Integrity, 2017
The current work aims at estimating the stress intensity factor deep inside the bulk from elastic strain data measured by synchrotron X-ray diffraction.
P. Lopez-Crespo   +4 more
doaj   +3 more sources

Edge singularities and structure of the 3-D Williams expansion

open access: yesComptes Rendus. Mécanique, 2008
The elastic solution in a vicinity of a re-entrant wedge can be described by a Williams like expansion in terms of powers of the distance to a point on the edge. This expansion has a particular structure due to the invariance of the problem by translation parallel to the edge.
Thomas Apel   +3 more
openaire   +1 more source

Multi-parameter fracture mechanics: crack path in a mixed-mode specimen

open access: yesFracture and Structural Integrity, 2019
A mixed-mode geometry has been chosen to investigate a crack propagation using the multi-parameter fracture mechanics concept. The so-called Williams series expansion is used for the crack-tip stress field approximation.
L. Mal�kov�   +3 more
doaj   +1 more source

About measuring the stress intensity factor of cracks in curved, brittle shells

open access: yesFracture and Structural Integrity
Most techniques of measuring the stress intensity factor (SIF) in the cracking process assume a crack in a planar medium. Currently, there is no effective approach for curved brittle shells, particularly for non-developable cases, i.e., shapes with non ...
Siwen Cao, Andr�s A. Sipos
doaj   +3 more sources

Right focal boundary value problems for difference equations [PDF]

open access: yesOpuscula Mathematica, 2010
An application is made of a new Avery et al. fixed point theorem of compression and expansion functional type in the spirit of the original fixed point work of Leggett and Williams, to obtain positive solutions of the second order right focal discrete ...
Johnny Henderson   +3 more
doaj   +1 more source

Expansion in die Trägermedien. Bestimmung der konzeptuellen Verfahren im Werk von Christopher Williams [PDF]

open access: yes, 2020
Seit den 1980er Jahren ist der US-amerikanische Künstler Christopher Williams mit seinen Fotografien, die oft kommerzielle Bildsprachen zitieren, international erfolgreich. Formal- und produktionsästhetisch entsprechen seine Arbeiten höchsten Qualitätsstandards – ein Umstand, der es fraglich macht, warum Williams als Konzeptkünstler bezeichnet wird ...
openaire   +1 more source

Digital processing of the results of optoelectronic measurements. The photoelasticity method and its application for determination of coefficients of the multiparameter asymptotic Williams expansion of the stress field

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2017
The study is aimed at experimental and computational determination of the coefficients in crack tip asymptotic expansions for a wide class of specimens under mixed mode loading conditions.
Larisa V Stepanova, Vadim S Dolgich
doaj   +1 more source

NOTCH3 as a modulator of vascular disease: a target in elastin deficiency and arterial pathologies

open access: yesThe Journal of Clinical Investigation, 2022
During blood vessel disease, vascular smooth muscle cell (VSMC) expansion and interaction with the matrix trigger changes in gene expression and phenotype. In this issue of the JCI, Dave et al.
Kimberly Malka, Lucy Liaw
doaj   +1 more source

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