How is airbag deployment validated in crash testing?

Airbag deployment validation includes: Timing verification (deployment start within 10-30ms depending on crash severity), inflation profile confirmation (proper pressure rise and venting), deployment geometry (coverage without aggressive contact), interaction with occupant kinematics, performance across occupant sizes and positions (small female to large male), and effect of out-of-position occupants. Testing uses high-speed cameras (1000+ fps) for deployment visualization, dummy instrumentation for loading measurement, and pressure sensors. Airbags must perform across temperature range (-35C to +85C) and after aging.