The Charpy Impact Test of Rock (1st Report)

The Charpy Impact Test of Rock (1st Report)

In this paper, we investigated dynamic fracture energy of rocks as a dynamic index in rock blasting using Charpy impact test. It was confirmed through the experiments that dynamic fracture energy of rocks obtained from the general equation used in Charpy impact test contains lots of kinetic energy w...

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Veröffentlicht in:Journal of the Society of Materials Engineering for Resources of Japan 2015-01, Vol.18 (1-2), p.10-14
Hauptverfasser: Furuzumi, Mitsumasa, Sugimoto, Fumio, Imai, Tadao, Kamoshida, Naoto, Abe, Masayoshi
Format: Artikel
Sprache:jpn
Schlagworte:
Charpy impact test
Dynamic tests
Dynamics
Fracture mechanics
Fracture toughness
Kinetic energy
Mathematical analysis
Rock
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Zusammenfassung:In this paper, we investigated dynamic fracture energy of rocks as a dynamic index in rock blasting using Charpy impact test. It was confirmed through the experiments that dynamic fracture energy of rocks obtained from the general equation used in Charpy impact test contains lots of kinetic energy which is consumed as scattering of rock fragment after it has failed. Also, it was found that the dynamic fracture energy of the rocks depend on the impact energy applied to the rock specimens, and its increasing rate is supposed to indicate an intrinsic dynamic fracture resistance of rocks.
ISSN:0919-9853