2003
DOI: 10.1016/s0013-7944(02)00273-4
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Characterisation of plasticity-induced closure––crack flank contact force versus plastic enclave

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Cited by 44 publications
(44 citation statements)
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“…Analysis of the effects of plasticityinduced crack closure has received little attention in previous photoelastic studies largely because the usual photoelastic resins are too brittle to grow fatigue cracks. Polycarbonate, however, is a birefringent material that is ductile enough to grow fatigue cracks in standard specimen geometries and is known to exhibit plasticityinduced closure (James et al 2003). It is possible to further investigate and modify the current photoelastic stress analysis methods to include an assessment of crack tip shielding mechanisms.…”
Section: Introductionmentioning
confidence: 99%
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“…Analysis of the effects of plasticityinduced crack closure has received little attention in previous photoelastic studies largely because the usual photoelastic resins are too brittle to grow fatigue cracks. Polycarbonate, however, is a birefringent material that is ductile enough to grow fatigue cracks in standard specimen geometries and is known to exhibit plasticityinduced closure (James et al 2003). It is possible to further investigate and modify the current photoelastic stress analysis methods to include an assessment of crack tip shielding mechanisms.…”
Section: Introductionmentioning
confidence: 99%
“…Hence, a compendium of T -stress solutions for crack problems was developed by Sherry et al (1995). More recently, it has been proposed that the plastic enclave that exists around a fatigue crack tip and along the crack flanks will shield the crack from the full influence of the applied elastic stress field (James et al 2003). Crack tip shielding includes the effects of crack flank contact forces (so-called crack closure) and a compatibilityinduced interfacial shear stress at the elastic-plastic boundary.…”
Section: Introductionmentioning
confidence: 99%
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“…Ref. [98] alternatively reported that definitions based on first node contact gave a better fit to the experimental results based on compliance change. Refs.…”
Section: Monitoring Crack Closurementioning
confidence: 99%
“…Anyway, different studies may be found in literature. James et al [57] employed transmission photoelasticity to study plasticity-induced fatigue crack closure in CT polycarbonate specimens with real fatigue cracks. They observed that fringe patterns were considerably influenced by the contact between the fracture surfaces.…”
Section: Introductionmentioning
confidence: 99%