温度试验方案设计及试验开展常被忽略的两个要素

The Two Often Overlooked Elements of Temperature Test Design and Running

温度试验是可靠性试验里面最重要的试验。通常认为,影响温度试验效果的要素有温度、停留时间、温变率等。而实际上,在试验方案设计和试验开展中,还有两个方面常常被忽略,即温度箱风速、样品的摆放。不考虑这两个要素,容易造成欠试验或过试验,达不到规定的激发和验证要求。本文通过试验分析了温度箱风速、样品的摆放对产品的影响,并分别给出相应规避策略。

The temperature test is the most important reliability test. Generally we considered the affection elements of the temperature test results, is the temperature, holding time, temperature change rate and so on. Actually, in experimental design and running, there are two aspects are often neglected, that the temperature box wind speed and sample placed. Do not consider these two elements, easily lead to fewer tests or over test, reaching less than the required excitation and validation requirements. In this paper, we carry out tests, analysis the influence of the temperature boxes wind speed and the samples placed, and give the corresponding avoidance strategy.