Fatigue limit evaluation of blunt-notched specimen using Δk th value of small crack (1st report: Study on the determination of the initial crack size with annealed carbon steel when stress ratio is zero)

Takahiro Matsueda; Yuuta Aono; Hiroshi Noguchi

doi:10.1299/kikaia.77.228

Fatigue limit evaluation of blunt-notched specimen using Δk _th value of small crack (1st report: Study on the determination of the initial crack size with annealed carbon steel when stress ratio is zero)

Takahiro Matsueda, Yuuta Aono, Hiroshi Noguchi

Strength of materials

Research output: Contribution to journal › Article › peer-review

Abstract

The fatigue limit of a blunt-notched specimen is dependent on the fatigue crack initiation limit δ_w1. δ_w1 is the propagating limit of the micro fatigue crack at notch root. However, before now no method for evaluating the δ_w1 based on fatigue crack properties had ever been proposed. In this paper, it is suggested that the initial crack size is dependent on the relationship between the application limit of the characteristic elastic field of the notch and the fatigue crack length measured from the notch root. It is also found that when the initial crack size is given, sw1 can be evaluated from the threshold stress intensity factor range ΔK_th.

Original language	English
Pages (from-to)	228-232
Number of pages	5
Journal	Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume	77
Issue number	773
DOIs	https://doi.org/10.1299/kikaia.77.228
Publication status	Published - 2011

All Science Journal Classification (ASJC) codes

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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Matsueda, T., Aono, Y., & Noguchi, H. (2011). Fatigue limit evaluation of blunt-notched specimen using Δk _th value of small crack (1st report: Study on the determination of the initial crack size with annealed carbon steel when stress ratio is zero). Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, 77(773), 228-232. https://doi.org/10.1299/kikaia.77.228

Fatigue limit evaluation of blunt-notched specimen using Δk _th value of small crack (1st report : Study on the determination of the initial crack size with annealed carbon steel when stress ratio is zero). / Matsueda, Takahiro; Aono, Yuuta; Noguchi, Hiroshi.

In: Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, Vol. 77, No. 773, 2011, p. 228-232.

Research output: Contribution to journal › Article › peer-review

Matsueda, T, Aono, Y & Noguchi, H 2011, 'Fatigue limit evaluation of blunt-notched specimen using Δk _th value of small crack (1st report: Study on the determination of the initial crack size with annealed carbon steel when stress ratio is zero)', Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A, vol. 77, no. 773, pp. 228-232. https://doi.org/10.1299/kikaia.77.228

Matsueda T, Aono Y, Noguchi H. Fatigue limit evaluation of blunt-notched specimen using Δk _th value of small crack (1st report: Study on the determination of the initial crack size with annealed carbon steel when stress ratio is zero). Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A. 2011;77(773):228-232. https://doi.org/10.1299/kikaia.77.228

Matsueda, Takahiro ; Aono, Yuuta ; Noguchi, Hiroshi. / Fatigue limit evaluation of blunt-notched specimen using Δk _th value of small crack (1st report : Study on the determination of the initial crack size with annealed carbon steel when stress ratio is zero). In: Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A. 2011 ; Vol. 77, No. 773. pp. 228-232.

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