Relibility Testing Paradigm Shift:

Traditional Approach

• Test to design limits
• If it meets specifications its "good enough!"
• combined environments rarely applied
• testing requirements defined by the customer

Paradigm Shift

• Engineers trained to mathematically model - Much more intellectual satisfaction - confidence in prediction.
• Mathematical models are good for design of electgronics and mechanical or chemical wear out processes.
  • Limited for predicting most electronic failures
  • Most electronic failures are by defect in design or manufactur, not wearout.
• Experimental Approach more "brute force"
  • intellectual satisfaction is found in the investigation of root cause - component and physics of failure.