某型航空包装箱加速试验方法研究

目的激发航空包装箱使用寿命内的潜在薄弱环节。方法基于寿命期剖面和故障机理分析,采用时间压缩、事件压缩和加速应力的加速方法,设计一种综合考虑湿热、随机振动、叉运、人工拆装、冲击和跌落的多应力加速试验方法。结果该试验将模拟包装箱16年使用寿命的试验时间加速至96天,有效地激发了产品金属紧固件锈蚀、结构件部分损坏等潜在故障,进而通过改进措施提升了包装箱的可靠性水平。结论该方法用于多应力加速试验合理可行。

Accelerated Testing Methods for Certain Aviation Packing Box

The paper aims to stimulate weak links of aviation packing box. Based on potential failure mechanism and the life profile, an accelerated testing which gave overall consideration to damp heat test, random vibration test, fork transport test, artificial dismounting test, impact test and drop test was designed by time compression, events compression and accelerating stress method. The test time was shortened to 96 days to stimulate 16 years working life of packing box. The potential failures such as metal corrosion and structure damage were stimulated successfully. Furthermore, the reliability level of packing box was improved by improvement measures. The results show that this method is reasonable and feasible to design accelerated testing under multiple environmental stresses.