Fatigue: A complex subject—Some simple approximations

Manson, S. S.

doi:10.1007/bf02321056

Cited by 1,115 publications

(399 citation statements)

References 11 publications

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“…For strain-based fatigue life prediction, this rule is normally applied with strain-life fatigue damage models, such as the Coffin-Manson relationship [11,12] , i.e.,…”

Section: Methodsmentioning

confidence: 99%

A Study of Fatigue Data Editing using the Short-Time Fourier Transform (STFT)

Abdullah¹,

Nizwan²,

Nuawi³

2009

American J. of Applied Sciences

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This study presents the development of the STFT-based fatigue data editing technique that will be used as a tool to accelerate for accelerating fatigue testing. This technique was performed by removing low amplitude cycles contained in the original signal in order to produce a shortened signal using the Short-Time Fourier Transform (STFT) parameter. The effectiveness of STFT power spectrum was validated using an SAE random fatigue data in order to indicate the relationship between STFT parameter and fatigue damage. The data was separated into two segments, i.e., damage and nondamage segments based on the 100% retention of the original fatigue damage. For the editing process, the STFT power spectrum distribution was used as the parameter to identify the damaged segment according to the power spectrum Cut-Off Level (COL). The low amplitude cycles with power spectrum lower than COL value were then removed from the original signal. Thus, a new edited signal was obtained which has retained almost 100% of the original fatigue damage and has equivalent signal statistic. The edited signal was found to be approximately 84% of the time duration of the original signal.

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“…For strain-based fatigue life prediction, this rule is normally applied with strain-life fatigue damage models, such as the Coffin-Manson relationship [11,12] , i.e.,…”

Section: Methodsmentioning

confidence: 99%

A Study of Fatigue Data Editing using the Short-Time Fourier Transform (STFT)

Abdullah¹,

Nizwan²,

Nuawi³

2009

American J. of Applied Sciences

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“…Park and Song evaluated and compared six such methods using the tested data of 29 aluminum alloys [19]. These considered of the four-point correlation and universal slopes methods by Manson, the uniform materials law by Bäumel and Seeger, the modified universal slopes method by Muralidharan and Manson, the modified four-point correlation method by Ong, and the method proposed by Mitchell et al [11,[20][21][22][23]. Amongst the correlations compared, the Mitchell's method may be said to be the best for aluminum alloys, according to Park and Song [19,23].…”

Section: Cyclic Strain Hardening Exponentmentioning

confidence: 99%

Some useful approximations for wrought aluminum alloys based on monotonic tensile properties and hardness

Zhang

2018

Materialwissenschaft Werkst

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The objective of the present paper is to derive some useful approximations for estimating the strain-controlled fatigue properties and cyclic deformation of wrought aluminum alloys from hardness and monotonic tensile properties. A variety of relationships and correlations among monotonic tensile properties, Brinell hardness, cyclic deformation and strain-controlled fatigue properties are developed for wrought aluminum alloys. A simple method is proposed for prediction of the strainlife curve requiring only ultimate tensile strength and modulus of elasticity. Prediction capability of the proposed method is evaluated for 25 kinds of wrought aluminum alloys with ultimate tensile strength between 120 MPa and 650 MPa. The proposed method provides good approximations of the strain-life curve.

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“…We have estimated the strain range corresponding to lOS cycles to failure for the above four materials by means of the method of universal slopes [29] with the following results: tool steel ±0.42%, alloy steel ±0.47%, maraging steel ±0.50%, aluminum alloy ±0.34%. The conclusion is that all the above four materials are roughly equally suitable from a fatigue point of view.…”

Section: Tolerancesmentioning

confidence: 99%