ABSTRACT
Testing is an important element of any engineering product development program. It may simply be described as subjecting the product under consideration to conditions that identify its weaknesses, modes of failures, and behavior characteristics. Testing is performed in two distinct modes (i.e., standard or accelerated). In the case of standard mode, the tests are conducted at typical operating parameters and at ambient temperature. Moreover, the actual operation time is considered as the test time. In the case of accelerated mode, parameters such as voltage, temperature, or frequency of cycling are varied above their normal values to reduce test time, or the test could simply be a test such as sudden death testing.
