Determining dynamic fracture toughness of anthracite by using a short-rod specimen

SHAN Ren-liang; GAO Wen-jiao; CHENG Xian-feng; LIU Tian-yu

doi:10.11883/1001-1455(2008)05-0455-07

Volume 28 Issue 5

Sep. 2014

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Article Navigation > Explosion And Shock Waves > 2008 > 28(5): 455-461

SHAN Ren-liang, GAO Wen-jiao, CHENG Xian-feng, LIU Tian-yu. Determining dynamic fracture toughness of anthracite by using a short-rod specimen[J]. Explosion And Shock Waves, 2008, 28(5): 455-461. doi: 10.11883/1001-1455(2008)05-0455-07

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SHAN Ren-liang, GAO Wen-jiao, CHENG Xian-feng, LIU Tian-yu. Determining dynamic fracture toughness of anthracite by using a short-rod specimen[J]. Explosion And Shock Waves, 2008, 28(5): 455-461. doi: 10.11883/1001-1455(2008)05-0455-07

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Determining dynamic fracture toughness of anthracite by using a short-rod specimen

doi: 10.11883/1001-1455(2008)05-0455-07

1.
Department of Civil Engineering, China University of Mining and Technology, Beijing 10083, China

Publish Date: 2008-09-25

Abstract

Abstract

This paper presents a newly-designed loading truncated cone, its associated two gland bushes, and an analytical formula for testing dynamic fracture toughness of anthracite. The impact fracture tests were carried out by using the SHPB and the newly-designed loading components. The dynamic fracture toughness of anthracite was measured on the short-bar anthracite specimens with the V-shaped notch. The relationship between the fracture toughness and loading ratelg(dF/dt) of anthracite was obtained by combining with the experimental data gained from the quasi-static tests. The fracture toughness of anthracite increases gradually whenlg(dF/dt), and it increases rapidly whenlg(dF/dt). The tests prove that the newly-developed truncated cone is better than the conventional knife-wedge for measuring the dynamic fracture toughness of short-rod specimens of rocklike materials.
- solid mechanics,
- dynamic fracture toughness,
- truncated cone loading,
- anthracite,
- short-ba specimens,
- SHPB test

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