Results 231 to 240 of about 1,306,615 (288)

Microstructure-sensitive finite-element analysis of crack-tip opening displacement and crack closure for microstructural short fatigue cracks

International Journal of Fatigue, 2022
In this paper, the effect of the polycrystalline microstructure on crack-tip opening displacement and crack closure is investigated for microstructural short plane strain fatigue cracks using the finite-element method.
Carl Fischer, Simon Schilli
exaly   +2 more sources

Observation of crack closure using a crack mouth opening displacement gauge

International Journal of Fatigue, 1989
A crack mouth opening displacement (CMOD) gauge has been designed to estimate the crack length as well as the crack opening stress level in an automated fatigue crack propagation test programme. The CMOD gauge accurately predicts crack tip opening levels
B Dattaguru
exaly   +2 more sources

On the Plastic Zone Size and the Crack Tip Opening Displacement of an Interface Crack Between two Dissimilar Materials

International Journal of Fracture, 2012
In the paper, the elastic-plastic fracture behavior of an interface crack between two dissimilar materials is investigated. The mixed-mode Dugdale model is applied to examine the plastic zone size and the crack tip opening displacement.
Soon Keat Tan, D K Yi, Z M Xiao
exaly   +2 more sources

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Studies on crack opening displacements

International Journal of Pressure Vessels and Piping, 1987
Abstract Experiments on thin sheets of 6063-T6 Al-alloy having a central notch were performed in order to examine if the displacements measured near and behind the crack tip bear some relationship to the theoretical crack opening displacements (COD)/crack tip opening displacements (CTOD) found by equations that have been modified to account for the ...
Y.P. Srivastava, S.B.L. Garg
openaire   +1 more source

A crack opening displacement approach to crack patching

Engineering Fracture Mechanics, 1980
Abstract The results of a numerical investigation into crack patching indicate that a modified form of the crack opening displacement approach may be useful in estimating the effect that fibre composite patches have on cracks in thin sheets.
R. Jones, R.J. Callinan
openaire   +1 more source

Crack opening displacements of Vickers indentation cracks

Engineering Fracture Mechanics, 2005
Vickers indentation cracks are an appropriate tool to determine the crack-tip toughness KI0 and, possibly, the bridging relation of ceramics with an R-curve behaviour from the total crack opening displacements. Two contributions to the total crack opening displacement field are addressed. First, the residual stresses occurring in the uncracked body are
Fett, T., Kunga Njiwa, A. B., Rödel, J.
openaire   +2 more sources

Crack opening displacement and the rate of fatigue crack growth

International Journal of Fracture Mechanics, 1972
Using a direct proportionality between the rate of fatigue crack growth and crack opening displacement above a threshold, it is shown that fatigue crack growth data for a wide variety of different materials can be accurately described in terms of the mechanical properties and two material constants; the constant of proportionality A and the threshold ...
R. J. Donahue, H. McI Clark, P. Atanmo, R. Kumble, A. J. McEvily   +4 more
openaire   +1 more source

The effect of shallow cracks on crack tip opening displacement

Engineering Fracture Mechanics, 1986
Abstract Further results given in the present paper confirm that shallow cracks have larger crack tip opening displacements at initiation than deep cracks. This difference in behaviour is shown to be principally caused by the different hydrostatic stresses existing at the tips of shallow and deep cracks.
G. Matsoukas, B. Cotterell, Y.-W. Mai
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Crack-opening-displacement measurements of a dynamically loaded crack

Engineering Fracture Mechanics, 1971
Abstract The crack-opening-displacement of a dynamically loaded crack in a plate of Araldit B has been measured using a simple optical interference technique and high speed photography. The goal of these investigations was to experimentally determine the dynamic stress intensity factor as a function of time up to about 100 μ sec after load ...
Erwin Sommer, Uwe Soltész
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On the boundary integral equations for the crack opening displacement of flat cracks

Integral Equations and Operator Theory, 1992
The author considers the first kind boundary integral equations \(Du=f\) in a bounded smooth domain in the plane, where \(D\) is the hypersingular operator associated with the Helmholtz equation and the Lamé system, respectively. Regarding \(D\) is a pseudodifferential operator and computing its complete symbol, he proves a coerciveness estimate and a ...
openaire   +2 more sources