Publication detail

Stochastic modelling of fatigue crack growth

OMISHORE, A.

Original Title

Stochastic modelling of fatigue crack growth

Type

article in a collection out of WoS and Scopus

Language

English

Original Abstract

The article deals with the influence of the skewness of quasi-constant stress range on the fatigue resistance of a steel bridge member subjected to multiple repeated loading. It is shown that it is necessary to know the statistical characteristics and type of probability density function relatively accurately in the case of quasi-constant stress range, otherwise the estimation of the fatigue resistance may be inaccurate. The fatigue resistance is studied using linear fracture mechanics. The random characteristics of the steel member are simulated using the Latin Hypercube Sampling method. The results of experimental research on calibration functions used in linear fracture mechanics are applied in this study. The calibration function for pure bending, which is presented on an extended domain of relative crack length, is applied. Non-parametric rank-order correlation identifies a strong influence of the quasi-constant stress range on the fatigue resistance. A detailed comparison of three variants of fatigue resistance as output random variables is performed. The results show that the probabilistic assessment of reliability may be burdened with greater or lesser epistemic uncertainty, which can distort the estimates of the remaining service life of the load bearing bridge member.

Keywords

fatigue; resistance; steel; correlation; crack;

Authors

OMISHORE, A.

Released

17. 5. 2019

Location

Lithuania

ISBN

978-609-476-197-3

Book

13th International Conference MODERN BUILDING MATERIALS, STRUCTURES AND TECHNIQUES

ISBN

2029-9915

Periodical

Modern Building Materials, Structures and Techniques

State

Republic of Lithuania

Pages from

449

Pages to

454

Pages count

6

URL

http://webu3.vgtu.lt/uni/stf/mbmst/449-454_MBMST_075.pdf

BibTex

@inproceedings{BUT170768,
  author="Abayomi {Omishore}",
  title="Stochastic modelling of fatigue crack growth",
  booktitle="13th International Conference
MODERN BUILDING MATERIALS, STRUCTURES AND TECHNIQUES",
  year="2019",
  journal="Modern Building Materials, Structures and Techniques",
  pages="449--454",
  address="Lithuania",
  doi="10.3846/mbmst.2019.075",
  isbn="978-609-476-197-3",
  issn="2029-9915",
  url="http://webu3.vgtu.lt/uni/stf/mbmst/449-454_MBMST_075.pdf"
}