Effects of load sequence on fatigue crack growth in pressure vessels

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Low alloy steels such as ASTM A508 and A533 and their equivalent materials have been extensively applied in fabricating pressure vessels due to their relatively excellent mechanical properties and moderately good weldability. The integrity of such materials governs the safety of the power plants. These vessels mainly are subjected to random loading in service and the load cycle interactions can have a significant effect in fatigue crack growth. Studying of fatigue crack growth rate and fatigue life calculation under spectrum loading is important for the reliable life prediction of vessels. Many models have been proposed, but as yet no universal model exists. In this paper, a fatigue life predicted under various load spectra, using three different fatigue crack growth models namely the Austen, modified Forman and NASGRO models. These models are validated with fatigue crack growth test data under various variable amplitude loadings. This application is performed with aids of three-point bend specimens. The results show clearly the load sequences effect and the predicted results agree with some discrepancies between the different models as well as with the test data. Neglecting, the cycle interaction effects in fatigue calculation under variable amplitude loading lead to invalid life prediction.

Original languageEnglish
Title of host publicationAdvanced Materials Research
Pages1217-1222
Number of pages6
Volume160-162
DOIs
Publication statusPublished - 2011
Event2011 International Conference on Materials Science and Engineering Applications, ICMSEA 2011 - Xi'an
Duration: 15 Jan 201116 Jan 2011

Publication series

NameAdvanced Materials Research
Volume160-162
ISSN (Print)10226680

Other

Other2011 International Conference on Materials Science and Engineering Applications, ICMSEA 2011
CityXi'an
Period15/1/1116/1/11

Fingerprint

Fatigue crack propagation
Pressure vessels
Fatigue of materials
Weldability
High strength steel
Power plants
Mechanical properties

Keywords

  • Fatigue crack growth
  • Pressure vessel
  • Sequence effect
  • Variable amplitude

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Abdullah, S., Beden, S. M., Mohd Ihsan, A. K. A., & Mohd Nopiah, Z. (2011). Effects of load sequence on fatigue crack growth in pressure vessels. In Advanced Materials Research (Vol. 160-162, pp. 1217-1222). (Advanced Materials Research; Vol. 160-162). https://doi.org/10.4028/www.scientific.net/AMR.160-162.1217

Effects of load sequence on fatigue crack growth in pressure vessels. / Abdullah, Shahrum; Beden, S. M.; Mohd Ihsan, Ahmad Kamal Ariffin; Mohd Nopiah, Zulkifli.

Advanced Materials Research. Vol. 160-162 2011. p. 1217-1222 (Advanced Materials Research; Vol. 160-162).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abdullah, S, Beden, SM, Mohd Ihsan, AKA & Mohd Nopiah, Z 2011, Effects of load sequence on fatigue crack growth in pressure vessels. in Advanced Materials Research. vol. 160-162, Advanced Materials Research, vol. 160-162, pp. 1217-1222, 2011 International Conference on Materials Science and Engineering Applications, ICMSEA 2011, Xi'an, 15/1/11. https://doi.org/10.4028/www.scientific.net/AMR.160-162.1217
Abdullah, Shahrum ; Beden, S. M. ; Mohd Ihsan, Ahmad Kamal Ariffin ; Mohd Nopiah, Zulkifli. / Effects of load sequence on fatigue crack growth in pressure vessels. Advanced Materials Research. Vol. 160-162 2011. pp. 1217-1222 (Advanced Materials Research).
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