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| Comprehensive Evaluation Method of Molding Product Reliability Based on AMSAA Model |
| Received:April 29, 2018 Revised:May 25, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2019.05.021 |
| KeyWord:development test AMSAA model time environment conversion coefficient discrete coefficient |
| Author | Institution |
| WU He-cheng |
School of Economics and Management, Nanjing University of Aeronautics and Astronautics, Nanjing , China |
| HU Lin |
School of Economics and Management, Nanjing University of Aeronautics and Astronautics, Nanjing , China |
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| Abstract: |
| Objective To improve the reliability evaluation method of molding products based on AMSAA model. Methods A method of determining the time environment conversion coefficient by optimizing the discrete coefficient of goodness of fit test statistics by using the AMSAA model commonly that used by the engineering community was proposed with same or similar product development stage test data based on the comprehensive utilization of mean and variance information. Results The result of this improved method showed that the lower confidence limit of MTBF (mean time between failures) was increased by 17% when the confidence degree was 0.9, which was superior to the result of literature. Moreover, when the confidence level was 0.95 and 0.99, the MTBF confidence level of the product was still better than that of the literature. Conclusion Therefore, at different confidence degree, the method is reasonable and feasible and it is also in line with the engineering practice. |
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