Prediction of high-cycle fatigue life reliability of aluminum cast alloy from statistical characteristics of defects at meso-scale

Tatsujiro Miyazaki; Hyogyoung Kang; Hiroshi Noguchi; Keisaku Ogi

doi:10.1016/j.ijmecsci.2007.07.008

Prediction of high-cycle fatigue life reliability of aluminum cast alloy from statistical characteristics of defects at meso-scale

Tatsujiro Miyazaki, Hyogyoung Kang, Hiroshi Noguchi, Keisaku Ogi

Strength of materials

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

9 Citations (Scopus)

Abstract

In this paper, a growth rate law of a small fatigue crack of an arbitrary metal and a method for predicting a size distribution of spheroidal defects cut by a specimen are proposed. And then, by combining the crack growth rate law and the prediction method for the surface defect size distribution, a method for predicting a high-cycle fatigue life reliability of a metal with defects is proposed. Rotating bending fatigue tests of plain specimens with/without a small blind hole (0.3 mm in diameter, 0.15 mm in depth) are carried out on an aluminum cast alloy JIS AC4B-T6 with eutectic Si, Fe compounds and porosities. By comparing analyzed results with experimental ones, the validity of the present method is examined.

Original language	English
Pages (from-to)	152-162
Number of pages	11
Journal	International Journal of Mechanical Sciences
Volume	50
Issue number	2
DOIs	https://doi.org/10.1016/j.ijmecsci.2007.07.008
Publication status	Published - Feb 2008

All Science Journal Classification (ASJC) codes

Civil and Structural Engineering
Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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abstract = "In this paper, a growth rate law of a small fatigue crack of an arbitrary metal and a method for predicting a size distribution of spheroidal defects cut by a specimen are proposed. And then, by combining the crack growth rate law and the prediction method for the surface defect size distribution, a method for predicting a high-cycle fatigue life reliability of a metal with defects is proposed. Rotating bending fatigue tests of plain specimens with/without a small blind hole (0.3 mm in diameter, 0.15 mm in depth) are carried out on an aluminum cast alloy JIS AC4B-T6 with eutectic Si, Fe compounds and porosities. By comparing analyzed results with experimental ones, the validity of the present method is examined.",

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AU - Ogi, Keisaku

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