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| Calendar Life Evaluation Technology of Non-metal Seals for Airborne Equipment |
| Received:November 03, 2024 Revised:March 14, 2025 |
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| DOI：10.7643/issn.1672-9242.2025.04.010 |
| KeyWord:aviation airborne equipment non-metallic seal calendar life prediction model aging test evaluation method |
| Author | Institution |
| WANG Nan |
Avic Xi'an Aircraft Industry Group Co., Ltd., Xi'an , China |
| HU Tao |
Avic Xi'an Aircraft Industry Group Co., Ltd., Xi'an , China |
| LI Xia |
Avic Xi'an Aircraft Industry Group Co., Ltd., Xi'an , China |
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| Abstract: |
| The current research status of the life evaluation of calendar products for airborne equipment is analyzed, the existing life prediction models and related correction parameters in China and abroad are summarized, the life prediction model of non-metallic seals is determined and the correction algorithm for relevant parameters is provided. The failure threshold of calendar sensitive components is obtained through experiments, and the failure threshold is substituted into the modified life prediction model to achieve calendar life evaluation of sensitive components and products. In the calendar life evaluation of some certain hydraulic oil tank and oil drain switch, based on the life prediction model proposed here, the final estimated life can be 17.43 and 15.46 years, respectively. The evaluation method is applied in the engineering practice and the performance degradation model of non-metal seals is constructed based on real service data regression, improving the credibility of the evaluation conclusion and providing reference for carrying out the calendar life evaluation of airborne equipment. |
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