Fatigue life evaluation using improved equivalent structural stress incorporating bending residual stress effect

Jin Ha Hwang; Han Sang Lee; Yun Jae Kim; Youn Il Chung

doi:10.3795/KSME-A.2018.42.11.985

Fatigue life evaluation using improved equivalent structural stress incorporating bending residual stress effect

Jin Ha Hwang, Han Sang Lee, Yun Jae Kim, Youn Il Chung

School of Mechanical Engineering

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

Abstract

The material properties and fatigue life of a metal can be affected by pre-strain, residual stress, and bending owing to the metal formation process. Therefore, it is important to understand the influence of factors that affect fatigue life. In this research, fatigue tests are conducted using simulated specimens to investigate the effect of the formation on the fatigue life evaluation of an automobile wheel. To evaluate the fatigue test results, the equivalent structural stress method considering bending residual stress is proposed. Then, the proposed equivalent structural stress method is verified by constructing a Master S-N curve.

Original language	English
Pages (from-to)	985-992
Number of pages	8
Journal	Transactions of the Korean Society of Mechanical Engineers, A
Volume	42
Issue number	11
DOIs	https://doi.org/10.3795/KSME-A.2018.42.11.985
Publication status	Published - 2018 Nov

Keywords

Automotive Wheel
Equivalent Structural Stress
Fatigue Service Life Evaluation
Forming Residual Stress

ASJC Scopus subject areas

Mechanical Engineering

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10.3795/KSME-A.2018.42.11.985

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abstract = "The material properties and fatigue life of a metal can be affected by pre-strain, residual stress, and bending owing to the metal formation process. Therefore, it is important to understand the influence of factors that affect fatigue life. In this research, fatigue tests are conducted using simulated specimens to investigate the effect of the formation on the fatigue life evaluation of an automobile wheel. To evaluate the fatigue test results, the equivalent structural stress method considering bending residual stress is proposed. Then, the proposed equivalent structural stress method is verified by constructing a Master S-N curve.",

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AU - Lee, Han Sang

AU - Kim, Yun Jae

AU - Chung, Youn Il

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Y1 - 2018/11

N2 - The material properties and fatigue life of a metal can be affected by pre-strain, residual stress, and bending owing to the metal formation process. Therefore, it is important to understand the influence of factors that affect fatigue life. In this research, fatigue tests are conducted using simulated specimens to investigate the effect of the formation on the fatigue life evaluation of an automobile wheel. To evaluate the fatigue test results, the equivalent structural stress method considering bending residual stress is proposed. Then, the proposed equivalent structural stress method is verified by constructing a Master S-N curve.

AB - The material properties and fatigue life of a metal can be affected by pre-strain, residual stress, and bending owing to the metal formation process. Therefore, it is important to understand the influence of factors that affect fatigue life. In this research, fatigue tests are conducted using simulated specimens to investigate the effect of the formation on the fatigue life evaluation of an automobile wheel. To evaluate the fatigue test results, the equivalent structural stress method considering bending residual stress is proposed. Then, the proposed equivalent structural stress method is verified by constructing a Master S-N curve.

KW - Automotive Wheel

KW - Equivalent Structural Stress

KW - Fatigue Service Life Evaluation

KW - Forming Residual Stress

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ER -

Fatigue life evaluation using improved equivalent structural stress incorporating bending residual stress effect

Abstract

Keywords

ASJC Scopus subject areas

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