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가속수명시험을 위한 KTX구조물의 S-N선도 추정

Title
가속수명시험을 위한 KTX구조물의 S-N선도 추정
Other Titles
S-N Curve Estimation of a KTX Structure for an Accelerated Life Testing
Author
최낙삼
Keywords
Rainflow Counting(레인플로우 집계); Accelerated Life Testing(가속내구시험); Miner's Rule(누적손상법); S-N Curve Estimation(S-N선도 추정); 등가하중(equivalent stress)
Issue Date
2008-11
Publisher
대한기계학회
Citation
대한기계학회 2008년도 추계학술대회, Page. 384-389
Abstract
An accelerated fatigue test is essentially required to maintain the reliability of the actual structure of KTX under operation conditions. However, actual fatigue life cannot be obtained if specimens are not adequate to the conventional fatigue test. Moreover component maker did not provide data of loading stress (S) - cycles at the failure (N). In this study, we suggest a prediction method of the S-N curve for establishing an accelerating test under various load levels. Load history was acquired from the field tests. A Rainflow method was used on the cycle counting of the field load data, and then, an S-N curve was obtained through the iteration process under the condition that the damage index satisfies to 1 in the Miner's rule.
URI
http://www.dbpia.co.kr/Journal/ArticleDetail/NODE01112598http://repository.hanyang.ac.kr/handle/20.500.11754/105090
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MECHANICAL ENGINEERING(기계공학과) > Articles
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