Fracture and Structural Integrity e-ISSN 1971-8993 Open access
Miscellanea Vol. 10, No. 37 (2016)

On fatigue behaviour of two spring steels. Part II: Mathematical models

Author and affiliation details
  • D. Angelova Corresponding author donkaangelova@abv.bg
  • R. Yordanova
  • T. Lazarova
  • S. Yankova
DOI
10.3221/IGF-ESIS.37.34
Pages
258-264
Published
Published inVol. 10, No. 37 (2016)Go to the issue

Abstract

Symmetric fatigue in two spring steels is investigated in three groups of specimens. One of the groups (Steel EN10270-1SH/ DIN 17223C – C 0.82%, Mn 0.76%, Si 0.26%) has experienced rotating-bending fatigue in air, and the other two groups (Steel BS250A53/ DIN 55Si7 – C 0.56%, Mn 0.81%, Si 1.85%), torsion fatigue in-air and corrosion environment. All experiments include testing to fracture, applying acetate-foil replication technique, replica monitoring of short crack surface growth, length measuring of propagating cracks, a, at the corresponding number of fatigue cycles, N. Data obtained from replica monitoring are presented in plots “Crack lengths, a – Cycles, N”, and used for calculating fatigue crack growth rates, da/dN, and graphical presentations “Crack growth rates, da/dN – Crack lengths, a”. A mathematical description of da/dN – a is presented by introducing a parabolic-linear model in different versions for each of the steels. The model versions are verified through comparing the experimental fatigue lifetimes with those calculated by the proposed model version.

Keywords

Article history

  1. ReceivedUntil the next stage: 0 days
  2. AcceptedUntil the next stage: 0 days
  3. Published

How to cite

APA

Angelova, D., Yordanova, R., Lazarova, T., & Yankova, S. (2016). On fatigue behaviour of two spring steels. Part II: Mathematical models. Fracture and Structural Integrity, 10(37), 258–264. https://doi.org/10.3221/IGF-ESIS.37.34

IEEE

D. Angelova, R. Yordanova, T. Lazarova, and S. Yankova, “On fatigue behaviour of two spring steels. Part II: Mathematical models,” Fracture and Structural Integrity, vol. 10, no. 37, pp. 258–264, 2016, doi: 10.3221/IGF-ESIS.37.34.

MLA

Angelova, D., et al. “On fatigue behaviour of two spring steels. Part II: Mathematical models.” Fracture and Structural Integrity, vol. 10, no. 37, 2016, pp. 258–264. https://doi.org/10.3221/IGF-ESIS.37.34.

Chicago

Angelova, D., R. Yordanova, T. Lazarova, and S. Yankova. 2016. “On fatigue behaviour of two spring steels. Part II: Mathematical models.” Fracture and Structural Integrity 10 (37): 258–264. https://doi.org/10.3221/IGF-ESIS.37.34.

Harvard

Angelova, D., Yordanova, R., Lazarova, T. and Yankova, S. (2016) ‘On fatigue behaviour of two spring steels. Part II: Mathematical models’, Fracture and Structural Integrity, 10(37), pp. 258–264. doi: 10.3221/IGF-ESIS.37.34.

Vancouver

Angelova D, Yordanova R, Lazarova T, Yankova S. On fatigue behaviour of two spring steels. Part II: Mathematical models. Fracture and Structural Integrity. 2016;10(37):258-264. doi:10.3221/IGF-ESIS.37.34

BibTeX

@article{angelova2016, author = {Angelova, D. and Yordanova, R. and Lazarova, T. and Yankova, S.}, title = {On fatigue behaviour of two spring steels. Part II: Mathematical models}, journal = {Fracture and Structural Integrity}, year = {2016}, volume = {10}, number = {37}, pages = {258--264}, doi = {10.3221/IGF-ESIS.37.34}, url = {https://doi.org/10.3221/IGF-ESIS.37.34}, issn = {1971-8993} }

RIS

TY - JOUR AU - Angelova, D. AU - Yordanova, R. AU - Lazarova, T. AU - Yankova, S. TI - On fatigue behaviour of two spring steels. Part II: Mathematical models JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2016 DA - 2016/06/13 VL - 10 IS - 37 SP - 258 EP - 264 DO - 10.3221/IGF-ESIS.37.34 UR - https://doi.org/10.3221/IGF-ESIS.37.34 SN - 1971-8993 ER -

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