Review of Statistical Induction Analysis Methods on Aircraft Vibration Test Data

Wang, Cheng; Bai, Junqing; Wan, Fuyong; Yan, Guozheng

doi:10.1016/j.proenv.2011.09.133

Cited by 3 publications

(5 citation statements)

References 5 publications

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“…Wange et al. conducted a comprehensive review of induction methods used in the aircraft vibration test data (Wang, Bai, Wan, & Yan, 2011). GJB/Z 126–99 defines a detailed procedure to synthesize the vibration spectrum for military vehicles, as shown in Figure 16.…”

Section: Methodologies Used For Assessment Of Vibration Fatiguementioning

confidence: 99%

“…A few investigations have been made to synthesize the vibration spectrum based on the field test measurement through statistical synthesis methods, such as the vibration test specifications for flight vehicles (Klein & Piersol, 1965) developed by NASA, and the associated criteria for dynamic vibration test (Keegan, 2001;Himelblau, Piersol, Wise, & Grundvig, 1994;Angeli, 2016;MIL-STD-810F, 2008). Wange et al conducted a comprehensive review of induction methods used in the aircraft vibration test data (Wang, Bai, Wan, & Yan, 2011). GJB/Z 126-99 defines a detailed procedure to synthesize the vibration spectrum for military vehicles, as shown in Figure 16.…”

Section: Vibration Fatigue Of Railway Bogie In Chinamentioning

confidence: 99%

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A critical review of wheel/rail high frequency vibration-induced vibration fatigue of railway bogie in China

Wu,

Zhang,

Cai

et al. 2024

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PurposeThis review aims to give a critical view of the wheel/rail high frequency vibration-induced vibration fatigue in railway bogie.Design/methodology/approachVibration fatigue of railway bogie arising from the wheel/rail high frequency vibration has become the main concern of railway operators. Previous reviews usually focused on the formation mechanism of wheel/rail high frequency vibration. This paper thus gives a critical review of the vibration fatigue of railway bogie owing to the short-pitch irregularities-induced high frequency vibration, including a brief introduction of short-pitch irregularities, associated high frequency vibration in railway bogie, typical vibration fatigue failure cases of railway bogie and methodologies used for the assessment of vibration fatigue and research gaps.FindingsThe results showed that the resulting excitation frequencies of short-pitch irregularity vary substantially due to different track types and formation mechanisms. The axle box-mounted components are much more vulnerable to vibration fatigue compared with other components. The wheel polygonal wear and rail corrugation-induced high frequency vibration is the main driving force of fatigue failure, and the fatigue crack usually initiates from the defect of the weld seam. Vibration spectrum for attachments of railway bogie defined in the standard underestimates the vibration level arising from the short-pitch irregularities. The current investigations on vibration fatigue mainly focus on the methods to improve the accuracy of fatigue damage assessment, and a systematical design method for vibration fatigue remains a huge gap to improve the survival probability when the rail vehicle is subjected to vibration fatigue.Originality/valueThe research can facilitate the development of a new methodology to improve the fatigue life of railway vehicles when subjected to wheel/rail high frequency vibration.

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Section: Methodologies Used For Assessment Of Vibration Fatiguementioning

confidence: 99%

Section: Vibration Fatigue Of Railway Bogie In Chinamentioning

confidence: 99%

A critical review of wheel/rail high frequency vibration-induced vibration fatigue of railway bogie in China

Wu,

Zhang,

Cai

et al. 2024

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“…The main benefit of the distribution-free tolerance limit over the normal tolerance limit is that it does not change with the spatial distribution of the spectral values for the responses within the zone. 26 DFLx can be expressed as followswhere xh is the value that will pass at least the β portion of xi with a confidence of γ. Calculation of distribution-free tolerance limits is the same as normal tolerance limits, but there is an equation of confidence limit integrated with fraction portion beta.…”

Section: Theoretical Fundamentalsmentioning

confidence: 99%

Section: Tolerance Limitsmentioning

confidence: 99%

Development of a method for maximum structural response prediction of a store externally carried by a jet fighter

Kaplan

Acar

Özer

2021

Proceedings of the Institution of Mechanical Engineers, Part G:

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Experimental structural response of equipment mounted in store carried externally by jet type aircraft is investigated, predicted and compared with responses suggested by military standards in this study. A representative store which is similar to Mark-83 warhead with guidance units in terms of mass and geometry is used in this study. The main scope of this study is to evaluate the structural response proposed by military standards with real test conditions and also suggest a new method with an artificial neural network to predict the maximum response. Seventy-five different flight conditions are used to train the network for low and high frequency components. Also, eight flight conditions apart from the training set of flight conditions are used to test the approach. Acceleration levels are collected in real flight conditions by the data storage system. In signal processing, vibration response is expressed as power spectral density functions in the frequency domain. Procedures to predict the maximum response from measurements are determined with statistical limits in the literature. Besides the well-known limits in literature, third-order polynomial normal and logarithmic transform is used, and the performance of the different limits is compared. It is found that the military standard vibration spectrum is conservative. Distribution-free and normal tolerance limits predicted low frequency acceleration spectral density magnitudes more accurately. Their prediction performances were better than those of the other tolerance limits and that of the military standard. Third-order polynomial transform predictions are found to be reasonable with respect to normal prediction limit and envelope approach. Finally, it can be concluded that the response prediction method proposed in this article works well for Mark-83 warheads with guidance unit carried externally by jet fighter.

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“…According to the literature and practical experience, typical mechanical loads including dynamic pressure and overload are key factors describing an individual aircraft mission and affecting its reliability. [22][23][24][25] To depict the dynamic pressure based on recordable flight parameters, vibration is introduced as a main response in the current study. Considering the physical meaning of dynamic pressure, vibration can be reasonably depicted by flight altitude and velocity.…”

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confidence: 99%

Aircraft reliability assessment for an individual mission based on recordable flight parameters

Wang

Guan

2018

Quality & Reliability Eng

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Reliability of aircraft varies with different missions, because load conditions are always diverse. In limited sample size circumstances, convention aircraft mission reliability assessment method can only give an average result for a kind of mission. Motivated by the practical need of reliability assessment for an individual mission, this paper constructs a novel method, which can assess reliability for a specific mission based on flight parameters. The mission reliability model can be established according to the relationship between flight loads, flight parameters, and reliability via adopting fault data and flight parameters synthetically. Statistical inference of aircraft failure rate is proposed, and then, the mission reliability can be assessed according to the fault data of the focused aircraft. It is worth noticing that the proposed method can also assess the reliability for a mission category via conducting an average calculation across all individual missions belonging to the target mission category. An illustrative example shows that the proposed method not only can give reliability assessments with a same precision with existing approaches for a specific mission category but also can reasonably assess the reliability regarding an individual mission.

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Review of Statistical Induction Analysis Methods on Aircraft Vibration Test Data

Cited by 3 publications

References 5 publications

A critical review of wheel/rail high frequency vibration-induced vibration fatigue of railway bogie in China

A critical review of wheel/rail high frequency vibration-induced vibration fatigue of railway bogie in China

Development of a method for maximum structural response prediction of a store externally carried by a jet fighter

Aircraft reliability assessment for an individual mission based on recordable flight parameters

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