2010
DOI: 10.1016/j.actamat.2009.11.055
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In situ characterization of fatigue damage evolution in a cast Al alloy via nonlinear ultrasonic measurements

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Cited by 72 publications
(47 citation statements)
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“…The values used for A356-T6 were Y = 2/π and ∆K th,eff = 1.5 MPa √ m. These were not experimentally determined, but were synthesized from a large compilation of published data [1,7,26,27,28,29]. While the LEFM approach requires an experimentally determined effective threshold stress intensity factor and a description of the defect shape to estimate the crack shape factor, this approach can be used to account for multiaxial complex loading and account for load ratio effects.…”
Section: Lefm Approachmentioning
confidence: 99%
“…The values used for A356-T6 were Y = 2/π and ∆K th,eff = 1.5 MPa √ m. These were not experimentally determined, but were synthesized from a large compilation of published data [1,7,26,27,28,29]. While the LEFM approach requires an experimentally determined effective threshold stress intensity factor and a description of the defect shape to estimate the crack shape factor, this approach can be used to account for multiaxial complex loading and account for load ratio effects.…”
Section: Lefm Approachmentioning
confidence: 99%
“…The practical implementation of the measurement technique has been limited to the through-transmission setup for determining the nonlinearity parameter of the second harmonic wave [1][2][3][4]. For the purpose of practical applications, a pulse-echo measurement technique is more desirable which enables the single-side access of test components.…”
Section: Introductionmentioning
confidence: 99%
“…Kumar et al 20) cast the Al7Si0.5Cu0.45Mg alloy in the sand mold with a copper chill, and measured the secondary arm spacing to be 32 µm at a height of 11 mm from the chill face, which value was coincident with that in the present AlSi alloy castings. In the present work, however, the secondary arm spacing in the MMC casting was not measured.…”
Section: Cast Structurementioning
confidence: 64%