서지주요정보
SUS 304의 크립 균열 진전과 크립 손상에 의한 파괴인성치 변화에 관한 연구 = A study on the creep crack growth and the variation of fracture toughness by creep damage of 304 stainless steel
서명 / 저자 SUS 304의 크립 균열 진전과 크립 손상에 의한 파괴인성치 변화에 관한 연구 = A study on the creep crack growth and the variation of fracture toughness by creep damage of 304 stainless steel / 고영호.
저자명 고영호 ; Ko, Young-Ho
발행사항 [대전 : 한국과학기술원, 1995].
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소장정보

등록번호

8005335

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 95007

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

This study seeks to contribute to remaining life assessment of high temperature structures such as turbine rotor which suffers from various loading. Typical loading phase of turbine rotor can be divided into three different phase i.e., cold start, hold at high temperature under steady state condition and shut down. In case of turbine component, creep damage such as crack and cavity has been a primary concem of rotor design. Under steady state loading operations, crack which initiated from stress concentrated region grows along grain boundary where the cavity caused by creep deformation seriously occurred. So one of the primary damage mechanism is creep deformation. Fracture toughness in steady state operation phase is enough high that sudden brittle fracture does not occur until the crack length become sufficiently large. But in case of transient operating conditions such as start up and shut down fracture toughness drastically decreases to lower level so that material may cause a sudden brittle fracture. So in this case fracture toughness becomes an important concerns whether the failure occurs. In this study fracture toughness of material which priory damaged by creep crack growth, was experimentally measured. From these results relations between fracture toughness and loading parameter which controls the creep crack growth rate also studied.

서지기타정보

서지기타정보
청구기호 {MME 95007
형태사항 ii, 47 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Young-Ho Ko
지도교수의 한글표기 : 이순복
지도교수의 영문표기 : Soon-Bok Lee
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학과,
서지주기 참고문헌 : p. 22-23
주제 Fracture mechanics.
Metals --Creeps.
Stress concentration.
Turbines.
균열 전파. --과학기술용어시소러스
파괴 인성. --과학기술용어시소러스
응력 집중. --과학기술용어시소러스
크리프. --과학기술용어시소러스
터빈. --과학기술용어시소러스
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