암석내 균열성장개시점의 결정을 위한 실험적 연구

• 영문명: An experimental study on the determination of the crack initation load level in rock
• 발행기관: 강원대학교 산업기술연구소
• 저자명: 김재동(Jaedong Kim)
• 간행물 정보: 『산업기술연구』vol.9, 43~49쪽, 전체 7쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 1989.09.30

영문 초록

In this study, 3-point bending test for the mode Ⅰ state and 4-point shear test for the mode Ⅱ state were adopted to verify the crack initiation load level through comparing the test results of the acoustic emission and the ASTM testing criteria, using Jecheon granite, as the rock sample. The major result obtained in this study is that the crack initiation load levels obtained by using ASTM testing criteria and by measuring acoustic emissions showed analogous, roughly. However in case of demanding high safety, the crack initiation load level needs to be underestimated to the level that the crack begins to deform nonlinearly.

목차

ABSTRACT

1. 서론

2. 암석치료, 실험장치 및 방법

3. 실험결과 및 고찰

4. 결론

REFERENCE