Fracture and Structural Integrity e-ISSN 1971-8993 Open access
Articoli Vol. 4, No. 14 (2010)

Influence of mean stress on the fatigue strength of ASTM A743 CA6NM alloy steel

Author and affiliation details
  • B. Lobato da Silva Corresponding author
  • J. L. de Almeida Ferreira
  • F. Oliveira
  • J. A. Araújo
DOI
10.3221/IGF-ESIS.14.02
Pages
pages 17-26
Published inVol. 4, No. 14 (2010)Go to the issue

Abstract

The objective of this work is to evaluate the effects of mean stress on the fatigue behavior of ASTM A743 CA6NM alloy steel. It is used in several hydrogenator turbine components. In order to achieve it, 33 specimens were experimentally evaluated under axial loads with stress ratio of - 1 and more 60 specimens were tested under stress ratio 0, 1/3 and 2/3. Based on the obtained results it was possible to determine parameters that describe the fatigue behavior of the evaluated material, obtain its S-N curves, its endurance limit and its scatter bands. In the assessment of the mean stress effects of fatigue life, Goodman, Gerber, Walker and Kwofie’s relations were tested in order to evaluate the validity of the use of such rules for the tested material. According to the obtained results it was possible to verify that Goodman and Gerber’s relations do not model correctly the reduction effect fatigue life and presented high scatter. The predictions of Walker and Kwofie’s relation are consistent and the Walker’s relation presented smaller scatter than Kwofie’s relation. Walker’s relation makes it possible to evaluate in a consistent way the effect of the presence of mean stresses on fatigue strength.

Article history

  1. ReceivedUntil the next stage: 0 days
  2. Accepted

How to cite

APA

Lobato da Silva, B., de Almeida Ferreira, J. L., Oliveira, F., & Araújo, J. A. (2010). Influence of mean stress on the fatigue strength of ASTM A743 CA6NM alloy steel. Fracture and Structural Integrity, 4(14), pages 17–26. https://doi.org/10.3221/IGF-ESIS.14.02

IEEE

B. Lobato da Silva, J. L. de Almeida Ferreira, F. Oliveira, and J. A. Araújo, “Influence of mean stress on the fatigue strength of ASTM A743 CA6NM alloy steel,” Fracture and Structural Integrity, vol. 4, no. 14, pp. pages 17–26, 2010, doi: 10.3221/IGF-ESIS.14.02.

MLA

Lobato da Silva, B., et al. “Influence of mean stress on the fatigue strength of ASTM A743 CA6NM alloy steel.” Fracture and Structural Integrity, vol. 4, no. 14, 2010, pp. pages 17–26. https://doi.org/10.3221/IGF-ESIS.14.02.

Chicago

Lobato da Silva, B., J. L. de Almeida Ferreira, F. Oliveira, and J. A. Araújo. 2010. “Influence of mean stress on the fatigue strength of ASTM A743 CA6NM alloy steel.” Fracture and Structural Integrity 4 (14): pages 17–26. https://doi.org/10.3221/IGF-ESIS.14.02.

Harvard

Lobato da Silva, B., de Almeida Ferreira, J.L., Oliveira, F. and Araújo, J.A. (2010) ‘Influence of mean stress on the fatigue strength of ASTM A743 CA6NM alloy steel’, Fracture and Structural Integrity, 4(14), pp. pages 17–26. doi: 10.3221/IGF-ESIS.14.02.

Vancouver

Lobato da Silva B, de Almeida Ferreira JL, Oliveira F, Araújo JA. Influence of mean stress on the fatigue strength of ASTM A743 CA6NM alloy steel. Fracture and Structural Integrity. 2010;4(14):pages 17-26. doi:10.3221/IGF-ESIS.14.02

BibTeX

@article{lobatodasilva2010, author = {Lobato da Silva, B. and de Almeida Ferreira, J. L. and Oliveira, F. and Araújo, J. A.}, title = {Influence of mean stress on the fatigue strength of ASTM A743 CA6NM alloy steel}, journal = {Fracture and Structural Integrity}, year = {2010}, volume = {4}, number = {14}, pages = {pages 17--26}, doi = {10.3221/IGF-ESIS.14.02}, url = {https://doi.org/10.3221/IGF-ESIS.14.02}, issn = {1971-8993} }

RIS

TY - JOUR AU - Lobato da Silva, B. AU - de Almeida Ferreira, J. L. AU - Oliveira, F. AU - Araújo, J. A. TI - Influence of mean stress on the fatigue strength of ASTM A743 CA6NM alloy steel JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2010 VL - 4 IS - 14 SP - pages 17 EP - 26 DO - 10.3221/IGF-ESIS.14.02 UR - https://doi.org/10.3221/IGF-ESIS.14.02 SN - 1971-8993 ER -

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