1.HALT（高加速寿命测试）：Highly accelerated life test是一种发现设计缺陷的工序，它通过设置逐级递增的加速环境应力，来加速暴露试验样品的缺陷和薄弱点，而后对暴露的缺陷和故障从设计、工艺和用料等诸方面进行分析和改进，从而达到提升可靠性的目的，最大的特点是设置高于样品设计运行限的环境应力，从而从暴露故障的时间大大短于正常可靠性应力条件下的所需时间。
2.HASS（高加速应力筛选）：Highly accelerated stress screen是产品通过HALT试验得出操作或破坏极限值后在生产线上做高加速应力筛选。要求100%的产品参加筛选。其目的是为了使得生产的产品不存在任何隐患的缺陷或者至少在产品还没有出厂前找到并解决这些缺陷,HASS就是通过加速应力以期在短时间内找到有缺陷的产品，缩短纠正措施的周期，并找到具有同样问题的产品。
试验项目：a.低温步进应力试验；b.高温步进应力试验；c.快速热循环试验；
d.振动步进应力试验；e.综合应力试验；f.工作应力测试。
参考的测试标准: IEC 60068-2-66, GB/T 2423.40, GB/T 29309-2012
1.HALT (highly accelerated life test): It is a process to discover design defects. It accelerates the exposure of defects and weak points of test samples by setting the accelerated environmental stress step by step, and then analyzes and improves the exposed defects and faults from the aspects of design, process and materials, so as to improve the reliability. The biggest feature is to set the environmental stress higher than the design operating limit of samples, Therefore, the time from exposure to failure is much shorter than that required under normal reliability stress conditions.
2. HASS (high accelerated stress screening): it refers to the screening of high accelerated stress on the production line after the operation or damage limit value of the product is obtained through HALT test. 100% of the products are required to participate in the screening. Its purpose is to make the products without any hidden defects or at least find and solve these defects before the products leave the factory. HASS aims to find the defective products in a short time by accelerating the stress, shorten the period of corrective measures, and find the products with the same problems.
Test items:
a. Low temperature step stress test; b. High temperature step stress test; c. Fast thermal cycle test; d. Vibration step stress test; e. Comprehensive stress test; f. Working stress test.
Reference test standards: IEC 60068-2-66, GB/T 2423.40, GB/T 29309-2012
内部空间：1364×1353×1397mm
温度范围：-200~200℃
温变速率：大于70℃/分钟
振台尺寸：1220×1220mm
加速度：Over 75g
振台容量：最大520kg
Internal space: 1364 × one thousand three hundred and fifty-three × 1397mm
Temperature range: - 200~200 ℃
Temperature change rate: more than 70 ℃/min
Vibration table size: 1220 × 1220mm
Acceleration: Over 75g
Vibrating table capacity: 520kg maximum
