| 赵华,许迪,龚时宏.微喷头耐久性的加速寿命试验方法研究[J].水利学报,2009,40(10): |
| 微喷头耐久性的加速寿命试验方法研究 |
| Study on accelerated test method for micro sprayer durability |
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| DOI： |
| 中文关键词: 微喷头 耐久性 寿命分布 加速寿命试验 |
| 英文关键词: micro sprayer durability life distribution accelerated life test |
| 基金项目: |
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| 摘要点击次数: 3085 |
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| 中文摘要: |
| 根据室内试验数据，在确定微喷头寿命分布及其分布参数估值基础上，对加速寿命试验和正常寿命试验方法下的微喷头耐久性能测试时间、样品失效时间以及使用寿命等进行分析比较，研究借助加速寿命试验方法提高微喷头耐久性能检测效率的可行性。结果表明，采用加速寿命试验方法可有效缩短正常寿命试验下检测微喷头产品耐久性能的时间50%左右，在不同可靠度下由两种试验方法获得的样品使用寿命估值间的相对误差在1%～11％之间，平均使用寿命估值间的相对误差为5％。在可允许的分布参数估算误差下，加速寿命试验方法获得的结果可以替代正常寿命试验下估算的微喷头使用寿命， 从而提高检测微喷头耐久性能的工作效率。 |
| 英文摘要: |
| The testing time, time for failure occurred and service life of micro sprayers of accelerated life tests are analyzed and compared to those of ordinary life test based on the life distribution and parameters determined by test data. The feasibility of adopting accelerated test to improve the efficiency of durability of micro sprayers is investigated accordingly. The results demonstrate that the testing time of ordinary life test can be shortened about 50% by using accelerated life test, and the relative error of service life estimation between two kinds of tests are 1%～11%, relative error of the average service life estimation is 5%, at different confidence levels. It may conclude that the estimation of micro sprayer life obtained from accelerated life test can substitute the result of ordinary life test under the condition of error-tolerant of distribution parameters. |
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