가속수명시험을 위한 KTX구조물의 S-N선도 추정S-N Curve Estimation of a KTX Structure for an Accelerated Life Testing
- Other Titles
- S-N Curve Estimation of a KTX Structure for an Accelerated Life Testing
- Authors
- 정달우; 최낙삼; 박수한
- Issue Date
- Nov-2008
- Publisher
- 대한기계학회
- Keywords
- Rainflow Counting(레인플로우 집계); Accelerated Life Testing(가속내구시험); Miner' s Rule(누적손상법); S-N Curve Estimation(S-N선도 추정); 등가하중(equivalent stress)
- Citation
- 대한기계학회 춘추학술대회, pp.384 - 389
- Indexed
- OTHER
- Journal Title
- 대한기계학회 춘추학술대회
- Start Page
- 384
- End Page
- 389
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/42014
- 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.
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Collections - COLLEGE OF ENGINEERING SCIENCES > DEPARTMENT OF MECHANICAL ENGINEERING > 1. Journal Articles
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