Results 131 to 140 of about 161,530 (168)

Strain energy release rate at interface of concrete overlaid pavements

International Journal of Pavement Engineering, 2016
AbstractA new method for calculating energy release rate (ERR) at the interface of concrete overlaid pavements is proposed using crack closure and the nodal force technique. This method transforms a 3D pavement system into a 2D interfacial crack model via a theoretical conversion.
John Nicholas Karadelis, Yougui Lin
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Strain Energy Release Rate for the Blister Test

2003
The configuration of the so-called “blister test” used in adhesion testing is shown in Figure 1. The adhered layer of thickness h may be considered as a circular plate of radius a built-in at its periphery. Use elementary plate theory to show that the strain energy release rate G for a constant pressure p or a central load P is given by $$ \user1{G
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Strain Energy Release Rate for Off-Axis Ply Cracking in Laminated Composites

International Journal of Fracture, 2001
Strain energy release rate associated with matrix cracking in the Θ-layer of unbalanced symmetric [O/Θ]s composite laminate is predicted analytically using a 2-D shear lag stress analysis and the Equivalent Constraint Model (ECM). Its dependence on the crack density and ply orientation angle is examined for glass/epoxy and carbon/epoxy laminates ...
Kashtalyan, Maria, Soutis, Costas
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Strain energy release rate distributions for double cantilever beam specimens

AIAA Journal, 1991
A 24-ply composite double cantilever-beam specimen under mode I (opening) loading has been analyzed by a 3D FEM code that calculated along a straight delamination starter for several different specimen materials. An isotropic specimen was found to have a strain-energy release rate distribution which varied along its delamination front due to the ...
J. H. Crews, K. N. Shivakumar, I. S. Raju   +2 more
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Strain energy release rates of interface cracks in orthotropic layered beams

International Journal of Fracture, 1995
We present the results of a numerical (BEM) fracture mechanics analysis of orthotropic tri-layer beams with an interface crack and subjected to the loads as in DCB and ELS specimen set ...
H. E. Ang, J. F. Torrance, C. L. Tan
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The strain energy release rate of delamination in fabric-reinforced composites

International Journal of Adhesion and Adhesives, 1988
Abstract Mode I and Mode II delamination fractures are investigated in glass, carbon and Kevlar fabric-reinforced composites. The effects of the angle of reinforcement and of the fibre volume content are examined particularly. The main conclusion is that in designing a fabric-reinforced composite for maximum resistance to delamination, the axes of ...
G Marom, I Roman, H Harel, M Rosensft, S Kenig, A Moshonov   +5 more
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Strain Energy Release Rate for the Short Rod Specimen

2003
The configuration of the “short rod” specimen for determining fracture toughness is shown in Figure I. Use elementary beam theory to determine the strain energy release rate G.
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Effect of delamination face overlapping on strain energy release rate calculations

Composite Structures, 1992
Abstract The strain energy release rate is often used as a fracture mechanics parameter to describe delamination propagation and onset in composites, and is conveniently evaluated using finite element analysis. A common problem encountered in analysis is overlapping (interpenetration) of the delamination faces if these faces are not constrained. This
Z. Tian, S.R. Swanson
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A parametric study on strain energy release rates of compression members

Composite Structures, 1989
Abstract The objective of this paper is to assess the delamination growth subsequent to sublaminate buckling in composite laminates by evaluating the strain energy release rates. Laminates under a wide range of compressive loads, different material properties and stacking sequences are parametrically and experimentally studied.
Ozden O. Ochoa, Allan Moore
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Strain-energy release rate of delaminated composite plates using continuous analysis

Composites Engineering, 1994
Abstract A continuous analysis procedure is introduced for determining the strain-energy release rate for composite plates containing arbitrarily located delamination regions of arbitrary shapes. The plates are considered to be simply supported along their four edges, and double Fourier series solutions are used.
James T.S. Wang, J.T. Huang
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