Introduction and Historical Review
Flaw/Stimulus Relations
Highly Accelerated Life Tests (HALT)
Highly Accelerated Stress Screen (HASS)
Development of Cost Effective Tests
Corrective Action
Total Cost Savings : Justifying to Management
Design and Manufacturing Interaction
Development of Screens
Precipitation and Detection Screens
Selection of Screen Stimuli
Modulated Excitation
Screen Fatigue Margin
Equipment Selection for Minimum Total Cost
Cumulative Fatigue Damage
How Thermal Cycling and Vibration Work
Arrhenius Reaction Rate Model
Case Studies and Lessons Learned
Comparison of Military and Commercial Approaches
Setting up Typical HASS
Conclusions and Summary
Real World Stresses
Stress Concentrations and their Affect on Fatigue Life
Resonance and Dynamic Response
Non-Linearity
Probability Densities and Fatigue Damage Accelerations
Why all G's were not Created Equal
Fixtures for HALT & HASS and Cost Effective Fixtures
Selection of Screen Stimuli
Why Combined Screens Should Always be Used
Case Studies and Lessons Learned
Discuss How to do a HALT on Products Brought by Attendees
Review and Summary