Research on Improving the Test Effectiveness of Rock Dynamic Fracture Toughness

Abstract:

Some problems of testing rock dynamic parameters in the SHPB experiment were analyzed and the relevant measures were proposed, which included how to determining the fracture time and the dynamic load etc. Based on the dynamic fracture experiment in the SHPB system with flattened Brazilian disc made of marble, the strain gauge technique to get the accurate fracture time was applied, and the different pulse shaper were adopted to get more precise wave data. The effective test methods of determining rock dynamic fracture toughness were discussed.

• Periodical: Applied Mechanics and Materials (Volume 164)
• Pages: 446-450
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.164.446
• Online since: April 2012
• Authors: Sheng Zhang, Xin Wen Li, Xiang Hao Yang
• Keywords: Dynamic Fracture Toughness, Dynamic Load, Fracture Time, Pulse Shaper

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