Accelerated life testing compresses years of wear into days or weeks by applying elevated stress (temperature, voltage, current) to make failure mechanisms manifest quickly, enabling lifetime prediction before product shipping.

What Is Accelerated Life Testing?

• Definition: High-stress testing to accelerate failure mechanisms.
• Stressors: Temperature, voltage, current, mechanical, environmental.
• Purpose: Predict product lifetime from short-duration tests.

Acceleration Principles: Most failures increase exponentially with temperature (Arrhenius), voltage (power-law), or current density (Black's equation).

Common Tests: HTOL (temperature/voltage), TDDB (voltage), electromigration (current), thermal cycling (temperature), humidity testing (environmental).

Analysis: Weibull plots, time-to-failure distributions, acceleration factor calculation, field lifetime extrapolation.

Applications: Reliability qualification, process validation, design verification, warranty prediction.

Accelerated life testing is reliability engineer's time machine — revealing future failures today through physics-based acceleration.