DETERMINATION OF FRACTURE TOUGHNESS OF GRANITIC ROCK BY MEANS OF AE TECHNIQUE.

Hideaki Takahashi; Toshiyuki Hashida; Kinji Tamakawa; Shuji Yuda; Masahiko Suzuki

doi:10.2473/shigentosozai1953.100.1151_17

DETERMINATION OF FRACTURE TOUGHNESS OF GRANITIC ROCK BY MEANS OF AE TECHNIQUE.

Hideaki Takahashi, Toshiyuki Hashida, Kinji Tamakawa, Shuji Yuda, Masahiko Suzuki

New Industry Creation Hatchery Center (NICHe)

Research output: Contribution to journal › Article › peer-review

Abstract

This paper describes the results of an experimental research in which the fracture toughness of a granitic rock is determined by means of AE technique. ASTM standard specimens of the notched bend type having width from 30 to 508 mm were tested. The deformation and fracture behavior showed a significant nonlinearity and a stable crack growth were observed in all the tests. AE signals were detected at low load level, which indicates the occurrence of microcracking near the initial notch tip. Furthermore an analysis of the waveform and frequency spectrum of AE signals leads to a conclusion that there exists a close relationship between micro-fracture process at the crank tip and AE signals.

Original language	English
Pages (from-to)	17-21
Number of pages	5
Journal	Nihon Kogyokaishi
Volume	100
Issue number	1151
DOIs	https://doi.org/10.2473/shigentosozai1953.100.1151_17
Publication status	Published - 1984

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10.2473/shigentosozai1953.100.1151_17

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title = "DETERMINATION OF FRACTURE TOUGHNESS OF GRANITIC ROCK BY MEANS OF AE TECHNIQUE.",

abstract = "This paper describes the results of an experimental research in which the fracture toughness of a granitic rock is determined by means of AE technique. ASTM standard specimens of the notched bend type having width from 30 to 508 mm were tested. The deformation and fracture behavior showed a significant nonlinearity and a stable crack growth were observed in all the tests. AE signals were detected at low load level, which indicates the occurrence of microcracking near the initial notch tip. Furthermore an analysis of the waveform and frequency spectrum of AE signals leads to a conclusion that there exists a close relationship between micro-fracture process at the crank tip and AE signals.",

author = "Hideaki Takahashi and Toshiyuki Hashida and Kinji Tamakawa and Shuji Yuda and Masahiko Suzuki",

year = "1984",

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AU - Yuda, Shuji

AU - Suzuki, Masahiko

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Y1 - 1984

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AB - This paper describes the results of an experimental research in which the fracture toughness of a granitic rock is determined by means of AE technique. ASTM standard specimens of the notched bend type having width from 30 to 508 mm were tested. The deformation and fracture behavior showed a significant nonlinearity and a stable crack growth were observed in all the tests. AE signals were detected at low load level, which indicates the occurrence of microcracking near the initial notch tip. Furthermore an analysis of the waveform and frequency spectrum of AE signals leads to a conclusion that there exists a close relationship between micro-fracture process at the crank tip and AE signals.

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DETERMINATION OF FRACTURE TOUGHNESS OF GRANITIC ROCK BY MEANS OF AE TECHNIQUE.

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