Results 241 to 250 of about 1,306,615 (288)

Crack opening displacement in pressurized spheres with surface cracks

International Journal of Fracture, 1985
The crack opening displacement at the centre of a surface crack in a pressurized sphere has been calculated using a strip yielding model. The shallow shell solution for the stress intensity factor derived by Folias has been extended to derive the COD, and the resulting equations have been solved numerically by a procedure due to Erdogan.
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Crack Opening Displacement Measurements on Small Cracks in Fatigue

1988
A computerized interferometric displacement gage was used to monitor the crack mouth opening behavior of naturally initiated small fatigue cracks in the high-strength alloy Ti6Al-2Sn-4Zr-6Mo. Complete load versus crack opening displacement curves were obtained for naturally initiated semicircular cracks of surface length as small as 50 µm.
JM Larsen, JR Jira, T Weerasooriya
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An approximative crack opening displacement field for embedded cracks

Engineering Fracture Mechanics, 1989
Abstract For the application of Cruse and Besuner's method to calculate approximative energy release rates or “averaged weighted stress intensity factors” the crack opening displacement field of the considered crack has to be known for a reference loading case. In this paper an embedded elliptical crack is investigated.
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On the effect of the residual stresses on the crack opening displacement in a cracked sheet

International Journal of Fracture, 2001
The residual stress and displacement fields caused by localized plastic flow near a mode I crack tip in a sheet under plane stress conditions are investigated. The present study founds on the classical Dugdale scheme of the plastic flow localization.
Y.N. Radayev, L.V. Stepanova
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Critical Crack Opening Displacement

2003
A three-point bend specimen with S = 25 cm, W = 6 cm, a = 3 cm, and B = 3 cm is used to determine the critical crack opening displacement δc of a steel plate according to the British Standard BS 5762. The load versus crack mouth displacement (P — V) record of the test is shown in Figure 1.
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On the cyclic crack‐tip opening displacement

Fatigue & Fracture of Engineering Materials & Structures, 2009
ABSTRACTThis note discusses the cyclic crack tip opening displacement (CTOD)cyc. As is discussed, the correct expression for the (CTOD)cycis based upon the effective range of the stress intensity factor.
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Crack-Opening Displacement of Surface Cracks in Pipeline Steel Plates

1983
A series of 30.4 by 10 by 1.6-cm tensile panels of an API SLX-70 pipeline steel with different surface crack lengths and depths were tested. Measured crack-mouth-opening displacements (CMOD) were compared with the predictions from linear elastic fracture mechanics (LEFM) plus the modified critical crack-opening displacement (COD) model.
Y. W. Cheng, H. I. McHenry, D. T. Read
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Crack Growth Resistance Measurement by Crack Opening Displacement Methods

1984
In a previous investigation, tests had been conducted on compact specimens made of A508 Class 2A steel to study specimen geometry effects on JR-Curve behavior. No particular geometry effects were shown in specimens ranging in size from ½T to 10T when conditions for J-controlled growth were satisfied.
DE McCabe, HA Ernst
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J-Integral and crack opening displacement fracture criteria

1990
The mathematical formulation of conservation laws applicable in elastostatics in the form of path independent integrals of some functionals of the elastic field over the bounding surface of a closed region originates from the work of Gunther [5.1]. Some years earlier Eshelby [5.2] obtained a representation of the ‘force on an elastic singularity or ...
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Crack Opening Displacement Design Methodology

2003
A steel structural member with a stress-concentration factor of 3 is subjected to a nomimal design stress σY/2 where σY is the yield stress of the material in tension. Using the crack opening displacement design method determine the maximum crack length the member can withstand without failure.
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