Eliminating the Undamaging Fatigue Cycles Using the Frequency Spectrum Filtering Techniques

Abdullah, Salwani; Putra, T. E.; Nuawi, Mohd. Zaki

doi:10.5772/36169

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…The mean squared amplitude of the sinusoidal wave at any frequency can be determined by finding the area under the PSD over that frequency band. 25 Therefore, it is an essential index that reflects the power variation of the random load spectrum with frequency, and the spectrum vibration energy distribution. 18 The load spectrum editing should achieve a shorter load spectrum without significant changes in indices (damage index, statistical index, and power spectrum density index), given all of the aforementioned durability parameters.…”

Section: Literature Reviewmentioning

confidence: 99%

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Methods for editing random load spectra based on multi-parameter index preservation for accelerated durability testing

Zheng

Pan

Chen

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Herein, a multi-parameter index preservation-based (MPIP) load spectrum editing method is proposed for improving the efficiency of the accelerated durability testing of mechanical components. The editing process was conducted in the frequency domain by adopting a wavelet transform to decompose the load spectrum into different wavelet levels. The high-frequency wavelet levels were squared and summed at each time interval to obtain the wavelet energy distribution. The damage segments with large amplitude cycles were identified and extracted from the load spectrum based on the wavelet energy distribution. A shorter spectrum was obtained without significant changes in the indexes (the damage index, statistical index, and power spectrum density index). The effectiveness of the MPIP-based load spectrum editing method was demonstrated through the editing process of a coil spring load spectrum, along with a fatigue and damage assessment. The results show that the time duration reduction ratio of the load spectrum after editing was considerably lower than that of the load spectrum before editing. Further, the statistical indices (i.e., the mean, root mean square, and kurtosis) and power spectrum density Pearson correlation coefficient of the MPIP-based edited load spectrum were comparable to those of the original load spectrum. The results also demonstrate that the MPIP-based edited load spectrum indices and time-domain-based edited load spectrum have certain differences. However, the proposed method is more effective for accelerated durability tests. The results regarding the coil spring fatigue damage and lifetime assessment further validated this conclusion.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Methods for editing random load spectra based on multi-parameter index preservation for accelerated durability testing

Zheng

Pan

Chen

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…As mentioned in (Vassilopoulos, 2010), after extensive study by the US NIST (National Institute of Standards and Technology, approximately 60% of 230 examined failures were associated with fatigue. This percentage was higher; 95% (Gujaran and Gholap, 2014) and between 80 and 90% by National Bureau of Standards (NBS) (Abdullah et al, 2012;NBS, 2015). A comprehensive study of the cost of fracture in the United States indicated a $119 billion (in 1982 dollars) cost occurred in 1978 (NBS, 1983).…”

Section: Introductionmentioning

confidence: 95%

Preliminary Design of a Power Transmission Shaft under Fatigue Loading Using ASME Code

Armah¹

2018

American Journal of Engineering and Applied Sciences

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Power transmission shafting is a vital element of all rotating machinery. A complete shaft design involves many iterative phases and fundamental to this is the determination of preliminary dimensions of the shaft. This paper presents a comprehensive fatigue analysis approach of determining the initial dimensions of a power transmission shaft under fatigue loading based on American Society of Mechanical Engineers (ASME) Standard B106.1M:1985. A countershaft running at a constant speed is designed using this approach. Stress analysis at potential critical locations are conducted to determine the shaft sizes. The sizes from these locations are then used to estimate the sizes at low stress locations. Adjacent sizes are blended using the largest size. To help visualize, a CAD model of the preliminary designed countershaft is provided.

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An accelerated editing method of multiaxial load spectrums for durability testing

Zhou

Luo

2022

Engineering Fracture Mechanics

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Eliminating the Undamaging Fatigue Cycles Using the Frequency Spectrum Filtering Techniques

Cited by 5 publications

References 17 publications

Methods for editing random load spectra based on multi-parameter index preservation for accelerated durability testing

Methods for editing random load spectra based on multi-parameter index preservation for accelerated durability testing

Preliminary Design of a Power Transmission Shaft under Fatigue Loading Using ASME Code

An accelerated editing method of multiaxial load spectrums for durability testing

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