Sealing reliability modeling of aviation seal based on interval uncertainty method and multidimensional response surface

Liao, Baopeng; Sun, Bo; Lu, Yu; Yan, Meichen; Zhou, Kun

doi:10.1016/j.cja.2019.01.019

Cited by 17 publications

(7 citation statements)

References 47 publications

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“…The impact of the materials used in the construction of an aircraft and the implemented technologies that affect its reliability and correct operation has been highlighted. The dominant approaches to aircraft reliability modelling can be divided into two main trends related to the analytical methods [8,9] as well as probabilistic approaches [10,11]. The method by which reliability is determined often depends on whether the failure of a component or of a complex structure is being studied.…”

Section: Reliability Of Aircraftmentioning

confidence: 99%

Analysis of Aircraft Operation System Regarding Readiness—Case Study

Żyluk¹,

Cur²,

Czerwiński³

2021

Aerospace

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The aim of the study was to develop a model of the readiness and reliability of an aircraft to perform an air task. The applied research method uses quantitative statistical methods and Markov processes in order to create a mathematical algorithm to exploit a selected aircraft type. The paper presents a case study of the TS-11 “Iskra” aircraft. The results show that even if the probability of being on stand-by is low, the tasks can be completed by operating the entire fleet properly.

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Section: Reliability Of Aircraftmentioning

confidence: 99%

Analysis of Aircraft Operation System Regarding Readiness—Case Study

Żyluk¹,

Cur²,

Czerwiński³

2021

Aerospace

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“…Therefore, the interval method is applied to deal with the problem of a small sample [20]. In order to solve this problem, Liao et al [24] built a reliability model of aviation seal with an interval method. The interval method is able to quantify the uncertainty with limited data, and has been eagerly wildly applied in the field of epistemic uncertainty and non-probabilistic reliability.…”

Section: Highlights Abstractmentioning

confidence: 99%

Failure-based sealing reliability analysis considering dynamic interval and hybrid uncertainties

Sun¹,

Yang²,

Ren³

et al. 2021

Eksploatacja i Niezawodność – Maintenance and Reliability

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In the reliability analysis of a sealing structure, radial clearance of the contact surface is usually regarded as a failure criterion, and the sample size is usually quite small, which brings great challenges to uncertainty quantification. Therefore, this paper proposes a reliability analysis method based on the leakage mechanism of the sealing. With the application of dynamic interval, the proposed method can be used to deal with problem of degradation in small sample to evaluate reliability. Moreover, the dynamic reliability with the mixture of the probabilistic and non-probabilistic variables can be obtained using the proposed method. An illustrative numerical case study of a spool valve is conducted in order to validate the proposed method and the implemented reliability sensitivity analysis. The proposed method is of great help in evaluating and predicting reliability with small degradation sample and hybrid uncertainties.

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“…Recently, there were also many applications of the deterministic rough micro element characterization method. Liao et al simulated and calculated the leakage of an aviation seal by establishing an aviation seal with isosceles triangle-shaped holes on the sealing face [29]. Han et al used a linearization method to link the effects of surface morphology across disparate scales.…”

Section: Introductionmentioning

confidence: 99%

Effect of Surface Roughness on the Performance of a Shallow Spiral Groove Liquid Mechanical Seal

Chen

Han³

et al. 2022

Processes

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Because surface roughness is similar to the size of the sealing gap in terms of scale, the effect of surface roughness on sealing performance must be considered. A calculation model determining the micro-gap flow and surface roughness is used to prove that the existence of surface roughness can effectively improve the sealing performance and that it can especially improve the opening force. The results indicated that the opening force of the lubrication film increases as the surface roughness increases and that the growth rate increases as the rotating speed increases. Due to different roughness sensitivities, the opening force increases differently in different parts of the seal. With regard to leakage, the roughness of the rotating ring’s grooved zone only increases the negative leakage when the rotating speed is higher than 8000 rpm. When the non-grooved zone of the rotating ring is rough, it can inhibit the negative leakage flow and cause the negative leakage to become positive when the rotating speed is higher than 1000 rpm. When the end face of the stationary ring is rough, the amount of leakage decreases. Furthermore, the surface roughness increases the friction torque when the rotating speed is higher than 5000 rpm. When the rotating speed is in the range of 1000–10,000 rpm, the roughness of the non-grooved area and the end face of the rotating ring increase the opening force by 2.40~57.94% and 3.55~69.33%, respectively. Meanwhile, by defining SF and SQ, a scheme for providing sealing performance is provided.

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Sealing reliability modeling of aviation seal based on interval uncertainty method and multidimensional response surface

Cited by 17 publications

References 47 publications

Analysis of Aircraft Operation System Regarding Readiness—Case Study

Analysis of Aircraft Operation System Regarding Readiness—Case Study

Failure-based sealing reliability analysis considering dynamic interval and hybrid uncertainties

Effect of Surface Roughness on the Performance of a Shallow Spiral Groove Liquid Mechanical Seal

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