Detail publikace

Fatigue damage prediction of short edge crack under various load: Direct Optimized Probabilistic Calculation

KREJSA, M. SEITL, S BROZOVSKY, J LEHNER, P.

Originální název

Fatigue damage prediction of short edge crack under various load: Direct Optimized Probabilistic Calculation

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

Fatiguecrack propagationcalibration functionprobabilityDirect Optimized Probabilistic CalculationDOProC

Autoři

KREJSA, M.; SEITL, S; BROZOVSKY, J; LEHNER, P.

Vydáno

4. 9. 2017

ISSN

2452-3216

Periodikum

Procedia Structural Integrity

Ročník

5

Číslo

2017

Stát

Italská republika

Strany od

1283

Strany do

1290

Strany počet

8

URL

http://www.sciencedirect.com/science/article/pii/S2452321617302196

BibTex

@inproceedings{BUT140501,
  author="KREJSA, M. and SEITL, S and BROZOVSKY, J and LEHNER, P.",
  title="Fatigue damage prediction of short edge crack under various load: Direct Optimized Probabilistic Calculation",
  booktitle="Procedia Structural Integrity",
  year="2017",
  journal="Procedia Structural Integrity",
  volume="5",
  number="2017",
  pages="1283--1290",
  doi="10.1016/j.prostr.2017.07.107",
  issn="2452-3216",
  url="http://www.sciencedirect.com/science/article/pii/S2452321617302196"
}