Results 271 to 280 of about 580,035 (347)
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Evaluation of strain energy release rates in delaminated laminates under compression
AIAA Journal, 1999Variousapproachestothedetermination oftheenergyreleaseratesofcompressively loaded compositelaminates are critically reviewed. These are the J integral, crack-closure integrals, and the direct method, which involves integration of the load-end compression relationship.
Mark J. Johnson, Srinivasan Sridharan
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Delamination Strain Energy Release Rate in Carbon Fiber/Epoxy Resin Composites
Materials Science Forum, 2007The paper reports on an experimental study of the Mode I interlaminar fracture of unidirectional carbon fibers/epoxy resin composites. Mode I delamination strain energy release rate GIC was determined in double cantilever beam (DCB) test, before and after gamma irradiation at various doses.
Gordić, Milan V. +4 more
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Critical Strain Energy Release Rate of Broken Ply Composite Laminates
Journal of Reinforced Plastics and Composites, 1998Ply breakage in laminated composites may be caused by impact load. Delamination usually precedes the failure of such broken ply laminates and it occurs at the interface of the broken and continuous plies. In the present work, an attempt has been made to find out the delamination initiation stress as well as critical strain energy release rate (Gc) for
Debabrata Chakraborty, B. Pradhan
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Hybrid experimental-numerical approach for determining strain energy release rates
Theoretical and Applied Fracture Mechanics, 1994Abstract A new approach is presented for determining strain energy release rates using a hybrid experimental-numerical method. The deformation around a crack in a body under load is measured by moire interferometry and a finite element procedure is used to convert the displacement into crack closure parameters to calculate strain energy release rates.
C.Y. Poon, C. Ruiz
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Effect of stitching on Mode I strain energy release rate
Composite Structures, 2005Abstract Stitching advanced graphite/epoxy composites in the through-thickness direction improves the interlaminar fracture toughness. The Mode I energy release rate of a graphite/epoxy composite, with and without stitching fibers, was experimentally determined using double cantilever beam specimens.
Gwo-Chung Tsai, Jun-Wei Chen
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Strain energy release rates in straight and curved notched compositebeams
32nd Structures, Structural Dynamics, and Materials Conference, 1991Two-dimensional finite element modeling has been used to determine strain energy release rates for delamination cracks in straight and curved notched tensile beams. The notched tensiie beam is a low-order analog of a cylindrical pressure vessel with an external part-through hole.
S. HARBERT, H. HOGAN
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Nonlinear Approach for Strain Energy Release Rate in Micro Cantilevers
Volume 10: Micro and Nano Systems, 2010An analytical Mixed Mode I & II crack propagation model is used to analyze the experimental results of stiction failed micro cantilevers on a rigid substrate and to determine the critical strain energy release rate (adhesion energy). Using nonlinear beam deflection theory, the shape of the beam being peeled off of a rigid substrate can be ...
Arash Kheyraddini Mousavi +3 more
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Strain energy release rate for interfacial cracks between dissimilar media
Engineering Fracture Mechanics, 1976Abstract An analysis was made of the stresses along a bonded interface between two elastic half spaces of dissimilar isotropic materials. Various loading conditions which give rise to interfacial crack propagation were considered, including thermal loads, bending loads and tensile loads parallel to the bond. From this two-dimensional stress analysis,
D.R Mulville, P.W Mast, R.N Vaishnav
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Determining buckling strain energy release rate through indentation-induced delamination
Thin Solid Films, 2011An oscillating indentation load was applied to delaminate a diamond-like-carbon film from a silicon substrate. After delamination occurred, a two-stage behavior was exhibited in the load-depth results; then, a three-stage behavior was exhibited after buckling occurred due to a long enough delamination length.
Pal Jen Wei +3 more
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Critical Strain Energy Release Rate
2003The following data were obtained from a series of tests conducted on precracked specimens of thickness 1 mm.
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