서지주요정보
레이저간섭변위게이지를 이용한 피로균열 닫힘하중의 측정 = Measurement of crack closure using laser interferometric strain/displacement gauge
서명 / 저자 레이저간섭변위게이지를 이용한 피로균열 닫힘하중의 측정 = Measurement of crack closure using laser interferometric strain/displacement gauge / 이동춘.
저자명 이동춘 ; Lee, Dong-Chun
발행사항 [대전 : 한국과학기술원, 1993].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8003657

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 93017

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

A Laser Interferometric Strain/Displacement Gauge(ISDG) was used to measure the crack opening load with Al 7075-T6 CCT specimen. The guage consits of laser and two photodiode. Indentations are marked with a diamond pyramid indenter using microhardness tester and are 200㎛ apart. Coherent, monochromatic light from a 10mW He-Ne laser incident on these indentations will produce fringe pattems. The position of these pattern in space is related to the distance between the two indentations. As this distance changes, the fringes shift. Measurement of these fringe shifts enables one to determine the local strain of specimen. Laser Interferometric Strain/Displacement Gauge has the following features : a very short guage length, no electrical or mechanical contact, no temperature sensitivity, measurement of displacement near the crack tip, relatively easy application. In this paper, procedure for measure the crack opening load using Laser Interferometric Strain/Displacement Gauge is described. It was found that Laser Interferometric Strain/Displacement Gauge can be used to measure the crack closure and that crack closure concept must be considered when crack growth rate is expected.

서지기타정보

서지기타정보
청구기호 {MME 93017
형태사항 ii, 40 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Dong-Chun Lee
지도교수의 한글표기 : 이순복
지도교수의 영문표기 : Soon-Bok Lee
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학과,
서지주기 참고문헌 : p. 20-21
주제 Metals --Fatigue.
Fracture mechanics.
Laser interferometers.
Displacement transducers.
피로 균열. --과학기술용어시소러스
변위 측정. --과학기술용어시소러스
균열 개구 변위. --과학기술용어시소러스
레이져 응용. --과학기술용어시소러스
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