Investigation on Spb Method Based on Nondimensional Load Separation Principle for SEB and CT Specimens

Chen Bao; Li Xun Cai

doi:10.4028/www.scientific.net/AMM.117-119.480

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 117-119Investigation on Spb Method Based on...

Investigation on S_pb Method Based on Nondimensional Load Separation Principle for SEB and CT Specimens

Abstract:

In this work, a nondimensional load separation conforming to similarity principle was proposed. Based on this new principle, similarity simulation of the physical phenomenon between the prototype sample and the dimension-changed model sample can be implemented. Then, a modified separation parameter S_pb method was developed, which can absolutely eliminate the effect of referencing blunt cracked specimen on the instantaneous crack length estimation of the sharp cracked specimen, and the forced blunt-corrected initial crack length and the final crack length are recommended as the calibration points for J-resistance curve estimation. Finally, the modified S_pb method is successfully applied in the J-resistance curve estimation of two steels with CT and SEB specimens, respectively.

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Periodical:

Applied Mechanics and Materials (Volumes 117-119)

Pages:

480-488

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.117-119.480

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Online since:

October 2011

Authors:

Chen Bao, Li Xun Cai

Keywords:

CT Specimen, Forced Blunt-Corrected, J-Resistance Curve, Load Separation, Nondimensional, Referencing Blunt Cracked Specimen, SEB Specimen, Separation Parameter S_pb, Similarity Principle

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