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Articles:2013,Vol:18,Issue(1):43-49 |
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Citation: |
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ZHAO Kun, WANG Sheng-nan. The Strategy of Widespread Fatigue Damage in FMP System[J]. International Journal of Plant Engineering and Management, 2013, 18(1): 43-49 |
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| The Strategy of Widespread Fatigue Damage in FMP System |
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| ZHAO Kun1 |
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1. School of Aeronautics,Northwestern Polytechnical University,Xi'an 710072,P. R. China;
2. School of Aeronautics,Northwestern Polytechnical University,Xi'an 710073,P. R. China |
| Abstract: |
| As is known,widespread fatigue damage (WFD) is a common phenomenon of aging aircraft being a negative impact on safety and reliability. The current FAR 25. 571(b) requires that"An LOV (Limit of Validity) must be established,during which it is demonstrated that widespread fatigue damage will not occur in the aircraft structures". The FAA issued AC 91-82A in August 2011 providing guidance on developing and implementing a Fatigue Management Program (FMP) system to address in-service issues for metallic fatigue critical structures. This action brings new challenges to aircraft manufacturers in China. This paper introduces the problem of widespread fatigue damage including the MSD(multiple site damage) and MED(multiple element damage) and the differences between them and the steps to establish the LOV / ELOV(Extended limit of validity). Authors in this paper is also proposing some management indicators to control WFD during the design phase and maintenance. Developing and implementing the management indicators to address WFD which are involved in the FMP system may provide guidance on the estimation and management to address WFD for present and future aircraft. Finally,some suggestions are put forward to provide the theoretical basis for large civil aircraft design and airworthiness. |
| Key words:
limit of validity
fatigue management program
widespread fatigue damage
airworthiness
fatigue
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| Received: 2013-01-21
Revised:
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| DOI: |
| Corresponding author:
Email： |
| Author description:
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References: |
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[1] Civil Aviation Authority of China. China civil aviation regulations，part 25，airworthiness standards: transport category airplanes[S]. CCAR-25-R3, 2001
[2] Federal Aviation Administration. 14 CFR part 25-airworthiness standards: transport category airplanes[S]. 2013
[3] Federal Aviation Administration. Advisory cir-cular120-104 establishing and implementing limit of validity to prevent widespread fatiguedamage[S]. 2011
[4] Wang S N，Zheng X L. Study on proposed rules to preclude widespread fatigue damage for transport category aircraft[J]. Acta Aero-nauticact Astronauticasinica，2010, 31 (9):1758～1768
[5] Federal Aviation Administration. CFR part 26 Amdt No. 26-5. 2011
[6] Federal Aviation Administration. 14 CFR part 25，121 and 129，aging aircraft program:widespread fatigue damage[R]. Notice of proposed rulemaking，Docket No. FAA-2006-24281; Federal Register, 2006
[7] Federal Aviation Administration. Advisory Cir-cular 25.571-1D. Damage tolerance and Fatigue Evaluation of Structure[S]. 2011
[8] Federal Aviation Administration. 14 CFR part 26 Continued airworthiness and safety im-provements for transport category airplanes．Sec 26. 21[S]. Doc No. FAA-2006-24281，75FR 69782, 2010
[9] Federal Aviation Administration. 14 CFR part 26 Continued airworthiness and safety im-provements for transport category airplanes．Sec 26. 23[S]. Doc No. FAA-2006-24281，75FR 69782, 2010
[10] Federal Aviation Administration. Advisory cir-cular 91-82A. Fatigue Management Programs for In-Service Issues[S]. 2011
[11] Federal Aviation Administration. Aging air-plane program: widespread fatigue damage;final rules[S]. Amendment Nos. 25-132，Docket No. FAA-2006-24281; Federal Regis-ter, 2010 |
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