The rapid temperature change test chamber is an environmental test chamber for testing the reliability of products
For the product under the design strength limit, use the temperature acceleration technique (when circulating within the upper and lower limit extreme temperatures, the product will produce alternating expansion and contraction) to change the external environmental stress, so as to generate thermal stress and strain in the product. Through the acceleration stress, the potential defects of the product appear [potential parts material defects, manufacturing defects, process defects], so as to avoid the product in the process of use, Being tested by environmental stress sometimes leads to failure and unnecessary losses, which has a significant effect on improving the yield of product delivery and reducing the number of repair. In addition, the stress screen itself is a process of manufacturing stage, rather than a reliability test, so the stress screen is a 100% procedure for products.
Screening purpose:
Correct errors in design and production
Eliminate various types of defective products
Do not damage other good products
Improve reliability
Ess will improve:
product quality
Product reliability
production efficiency
profit
Market satisfaction
Ess will decrease:
Site defects
Maintenance cost
Time to enter the market
Occurrence of early failure
Manufacturing costs, human resources
Relevant test standards of rapid temperature change test chamber:
Mil-std-2164 stress screening of electronic products
Gjb-1032-90 electronic product stress screening
Mil-344a-4-16 environmental stress screening of electronic equipment
Mil-2164a-19 environmental stress screening method for electronic equipment
Nabmat-9492 US Navy manufacturing screening
Gjb/z34-5.1.6 quantitative environmental stress screening of electronic products
