The Influence of Wedge Shape on the Determination of Dynamic Fracture Toughness in SHPB Test

Abstract:

The SHPB loading three-point bending specimen is a popular way for measuring the dynamic fracture toughness of the material. The wedge shapes on the loading end of the incident bar have necessary effects on the propagation of the stress wave. The dynamic mechanical response and the fracture toughness of the aluminum alloy were measured by SHPB with different wedge shapes, and the influences of wedge shape on determination of dynamic fracture toughness was analyzed in this study. The investigation result can be used to provide reference for the design of a new Hopkinson apparatus for dynamic fracture testing.

• Periodical: Key Engineering Materials (Volume 665)
• Pages: 205-208
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.665.205
• Online since: September 2015
• Authors: Shi Fan Zhu, Yang Cao, Chun Huan Guo, Feng Chun Jiang
• Keywords: Dynamic Fracture Toughness, Dynamic Mechanical Responses, SHPB, Three Point Bending Specimen, Wedge Shape

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