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Fatigue damage prediction of short edge crack under various load: Direct Optimized Probabilistic Calculation
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SYSNO ASEP 0479764 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Fatigue damage prediction of short edge crack under various load: Direct Optimized Probabilistic Calculation Author(s) Krejsa, M. (CZ)
Seitl, Stanislav (UFM-A) RID, ORCID
Brožovský, J. (CZ)
Lehnert, P. (CZ)Number of authors 4 Source Title 2nd International Conference on Structural Integrity, ICSI 2017, 4-7 September 2017, Funchal, Madeira, Portugal. - Amsterdam : Elsevier, 2017 / Moreina P. ; Tavares P. ; Freitas M. - ISSN 2452-3216 Pages s. 1283-1290 Number of pages 8 s. Publication form Print - P Action ICSI 2017 - International Conference on Structural Integrity /2./ Event date 04.09.2017 - 07.09.2017 VEvent location Funchal, Madeira Country PT - Portugal Event type WRD Language eng - English Country NL - Netherlands Keywords fatigue ; crack propagation ; calibration function Subject RIV JL - Materials Fatigue, Friction Mechanics OECD category Audio engineering, reliability analysis R&D Projects GA17-01589S GA ČR - Czech Science Foundation (CSF) Institutional support UFM-A - RVO:68081723 UT WOS 000419177800172 EID SCOPUS 85066273465 DOI 10.1016/j.prostr.2017.07.107 Annotation Fatigue crack propagation depends on a number and value of stress range cycles. This is a time factor in the course of reliability for the entire designed service life. Three sizes are important for the characteristics of the propagation of fatigue cracks - initial size, detectable size and acceptable size. The theoretical model of a fatigue crack progression can be based on a linear elastic fracture mechanics (uses Paris-Erdogan law). Depending on location of an initial crack, the crack may propagate in structural element (e.g. from the edge or from the surface under various load) that could be described by calibration functions. When determining the required degree of reliability, it is possible to specify the time of the first inspection of the construction which will focus on the fatigue damage. Using a conditional probability and Bayesian approach, times for subsequent inspections can be determined based on the results of the previous inspection. For probabilistic modelling of a fatigue crack progression was used the original and a new probabilistic method - the Direct Optimized Probabilistic Calculation ('DOProC'), which uses a purely numerical approach without any simulation techniques or approximation approach based on optimized numerical integration. Compared to conventional simulation techniques is characterized by greater accuracy and efficiency of the computation. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2018
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