Introduction of Developing Fatigue Load Spectrum for Full-Scale Fatigue Test of Composite Aircraft
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Aeronautical and Space Sciences"
DOI: 10.1007/s42405-020-00257-8
Abstract: This is a study on the loading spectrum for full-scale fatigue testing of composite aircraft structures. Fatigue tests are performed to confirm the durability and damage tolerance of a composite aircraft structure. In particular, as… read more here.
Keywords: spectrum full; load; composite aircraft; load spectrum ... See more keywords
Influence of load spectrum on contact fatigue damage of a case carburized wind turbine gear
Sign Up to like & getrecommendations! Published in 2021 at "Engineering Failure Analysis"
DOI: 10.1016/j.engfailanal.2020.105005
Abstract: Abstract Contact fatigue failures are becoming increasingly prominent in heavy-duty gears due to the remarkable effects on service lives and reliabilities of associated machines such as wind turbines. The contact fatigue estimation of such gears… read more here.
Keywords: contact; contact fatigue; fatigue; load spectrum ... See more keywords
Developing an accelerated flight load spectrum based on the n-N curves of a fleet
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Fatigue"
DOI: 10.1016/j.ijfatigue.2018.08.005
Abstract: Abstract Fatigue load spectra are essential for fatigue analyses and full-scale fatigue testing (FSFT) of aircraft structures. Because of the long test period, an accelerated load spectrum is required to reduce time consumption and cost.… read more here.
Keywords: load; flight load; accelerated flight; load spectrum ... See more keywords
A segmented load spectrum model for high-speed trains and its inflection stress as an indicator for line quality
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Fatigue"
DOI: 10.1016/j.ijfatigue.2021.106221
Abstract: Abstract Load spectrum plays a pivotal role for fault diagnosis and reliability evaluation. Here we performed long-term field tests to investigate the characteristics of load spectra of the bogie frame in a high-speed train. With… read more here.
Keywords: load spectrum; quality; load; model ... See more keywords
A Random Load Spectrum Processing Based on Fourier Transform and Damage Mechanics Method
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Mathematics"
DOI: 10.12677/ijm.2017.64021
Abstract: 本文首先利用离散傅里叶变换方法将随机载荷谱从时域转换到频域；进而结合信号频谱和功率谱的分布特点确定截止频率，将高频小幅值的信号截去；将滤波后的频域信号通过傅里叶反变换转换回时域，再根据损伤力学等损伤原则进行载荷谱的规范化处理，得到用于结构疲劳分析的规范化载荷谱。本文将载荷信号的频谱与功率谱对比参照，选取适当的截止频率，有效的防止了过度滤波，为滤波的截止频率选取提供了有效实用的工程方法；本文以损伤力学为基础，实现了随机载荷谱的规范化编制，并能保留原有载荷作用顺序，为提高结构在随机载荷作用下疲劳寿命预估的可靠性奠定了基础。 Firstly, the random load spectrum is transformed from the time domain to the frequency domain by using the method of discrete Fourier transform. Secondly, according to the scattered characteristic of the frequency domain signal,… read more here.
Keywords: load spectrum; fourier transform; load; random load ... See more keywords
Load-spectrum Models for Offshore Crane Fatigue Analysis
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DOI: 10.17736/ijope.2021.hc22
Abstract: Offshore cranes are less frequently used than onshore cranes. Because of the reasons, fatigue analysis of offshore crane has often been ignored or performed with a nominal stress approach based on FEM1,001. Recently, ultra-high tensile… read more here.
Keywords: load spectrum; spectrum model; load; fatigue analysis ... See more keywords
Extrapolation of Tractor Traction Resistance Load Spectrum and Compilation of Loading Spectrum Based on Optimal Threshold Selection Using a Genetic Algorithm
Sign Up to like & getrecommendations! Published in 2023 at "Agriculture"
DOI: 10.3390/agriculture13061133
Abstract: To obtain the load spectrum of the traction resistance of the three-point suspension device under tractor-plowing conditions, a load spectrum extrapolation method based on a genetic algorithm optimal threshold selection is proposed. This article first… read more here.
Keywords: load spectrum; genetic algorithm; extrapolation; spectrum ... See more keywords