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strain energy release rate

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Published: 01 January 2001
Fig. 32 Strain energy release rate coefficients, C ε , for interfacial cracking in the 90°/90° and the–25°/ 90° interfaces of the [±25°/90°] s laminate More
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Published: 01 January 2001
Fig. 33 Strain energy release rate coefficients, C T , for interfacial cracking in the 90°/90° and the–25°/ 90° interfaces of the [±25°/90°] s laminate More
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Published: 01 January 2001
Fig. 37 Strain energy release rate coefficients, C ε , for transverse cracking in [0°/90° n /0°] laminates, n = 1, 2, 3, 4 More
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Published: 01 January 2001
Fig. 38 Strain energy release rate coefficients, C T , for transverse cracking in [0°/90° n /0°] laminates. n = 1, 2, 3, 4 More
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Published: 01 January 2001
Fig. 40 Strain energy release rate retention factor, R ( s ) More
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Published: 01 January 2001
Fig. 3 Critical strain energy release rate, G c , as a function of the mixed-mode ratio for graphite/epoxy IM7/E7T1-2. A, pure mode I; B, mixed mode I and mode II; C, pure mode II More
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Published: 01 January 2000
Fig. 5 Hydrogen effects on strain energy release rates for Cu/Ti/SiO 2 interfaces More
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Published: 01 January 2001
Fig. 16 Local finite-element model of a damaged bondline used in strain energy release rate calculation for bonded joints. Source: Ref 29 More
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Published: 01 November 1995
Fig. 30 Plot of crack stability that is due to the R -curve of a material. Crack resistance, R , vs. extension is plotted on the same graph, along with applied strain-energy release rate, G . Catastrophic failure occurs at the stress when G = R c . After Ref 132 More
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Published: 01 January 1997
Fig. 14 Schematic representation of R -curve behavior. Crack resistance increases with crack length, so catastrophic failure will occur only when the strain energy release rate ( G ) exceeds the critical crack resistance value ( R c ). a o , initial crack size; a c , critical crack size More
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Published: 01 January 2001
and a thicker, more stable sublaminate. (3) As the load increases, the thin sublaminate buckles and further out-of-plane loads result around the perimeter of the delamination. The postbuckling continues until the out-of-plane loads exceed the critical mode I strain energy release rate or the interlaminar More
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003380
EISBN: 978-1-62708-195-5
... combination of fundamental modes to predict delamination onset and growth. Delamination Characterization Typical mixed-mode I and II delamination failure criterion is shown in Fig. 3 . The IFT is determined as a critical value of the strain energy release rate, G c , plotted as a function...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003386
EISBN: 978-1-62708-195-5
... and further out-of-plane loads result around the perimeter of the delamination. The postbuckling continues until the out-of-plane loads exceed the critical mode I strain energy release rate or the interlaminar tension allowable. The final failure occurs as the delamination propagates perpendicular...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006910
EISBN: 978-1-62708-395-9
..., such as plane-strain fracture toughness/strain energy release rate ( K Ic / G Ic ) methods, has been used for decades ( Ref 3 , 4 ). However, because of the inelasticity problems, polymers have stress distributions at the crack tip that cannot be described or quantified adequately by the assumptions...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003310
EISBN: 978-1-62708-176-4
... to determine the plane strain fracture toughness of polymers. ASTM D 5045 specifies a procedure for determining the critical strain energy release rate, G Ic , of polymers. This parameter is equivalent to J Ic for materials that exhibit linear (or nearly linear) elastic behavior ( Ref 41 ). ASTM D 5045...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003378
EISBN: 978-1-62708-195-5
... Abstract The properties of unidirectional composite (UDC) materials are quite different from those of conventional, metallic materials. This article provides information on the treatment of UDC stress-strain relations in the forms appropriate for analysis of thin plies of material. It explains...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002379
EISBN: 978-1-62708-193-1
... postulated that the critical rate of strain energy released during unstable crack extension, G c , is related to the surface energy of the material, γ, as: (Eq 1) G c = 2 γ (Eq 2) G c = π σ c 2 a E where σ c is the critical stress at the onset of fracture and E...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003305
EISBN: 978-1-62708-176-4
... energy, U , is the work done by a load, P , causing a displacement, Δ: (Eq 7) U = P Δ / 2 = C P 2 / 2 where C = Δ/ P , the elastic compliance. The loss of elastic potential energy with crack extension of unit area, A , is defined as the strain-energy release rate...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003391
EISBN: 978-1-62708-195-5
... is developed and modeled separately. In the local model, boundary conditions are forced to match the deformations calculated by the global model at the edge of the patch. Using the fine mesh, local stresses, strains, interlaminar strain energy release rates, damage progression, and so forth can be calculated...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003330
EISBN: 978-1-62708-176-4
... energy release rate strain rate tension testing open hole tension test THE CHARACTERIZATION of engineering properties is a complex issue for fiber-reinforced composites (FRC) due to their inherent anisotropy and inhomogeneity. In terms of mechanical properties, advanced composite materials...