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Experimental study on crack curving propagation in bending beams under impulsive load

Acta Mechanica Sinica/Lixue Xuebao, ISSN: 0567-7718, Vol: 16, Issue: 1, Page: 83-92
2000
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Article Description

Dynamic fracture behaviour of crack curving in bent beams has been investigated. In order to understand the propagation mechanism of such cracks under impact, an experimental method is used that combines dynamic photoelasticity with dynamic caustics to study the interaction of the flexural waves and the crack. From the state change of the transient stresses in polymer specimen, the curving fracture in the impulsively loaded beams is analyzed. The dynamic responses of crack tips are evaluated by the stress intensity factors for the cracks running in varying curvature paths under bending stress wave.

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