Air to Air Thermal Shock Testing

The air-to-air thermal shock test evaluates the reliability of specimens by repeatedly exposing them to rapid alternating high and low temperatures. Expansion and contraction due to temperature changes generate stresses due to differences in the expansion rates of parts made of different bonding materials.

Air to Air Thermal Shock Testing

Thermal shock testing is performed to analyze the behavior of a product when they are abruptly exposed to extreme temperatures for a short period of time. Rapid cycling of temperature extremes causes product deformation such as dislocations within components and microstructures.

The air-to-air thermal shock test evaluates the reliability of specimens by repeatedly exposing them to rapid alternating high and low temperatures. Different heat capacities and thermal time constants of device components also cause stress. When these stresses are repeatedly applied, cracks and fractures occur. Fatigue accumulates due to repeated application of stress, and may fracture at a strength lower than the static strength. Repeated stress can crack bonded parts, delaminate coatings, and loosen screws.

Video 01: Thermal shock testing

Common Uses of Thermal Shock Test

• Testing ceramics for high-temperature application
• Testing of mechanical products deployed for the medical and defense field
• Screening processes before product shipment

Advantages of Thermal Shock Test

• Less labor-intensive
• Minimal operator error
• Minimal disturbance from the surroundings
• Test parameters can be tailored according to service condition

Industrial applications of Thermal Shock Test

This test is conducted to validate mechanical, electronic, and structural products used in semiconductor, construction equipment, electronics, and aerospace applications, where these products are subjected to persistent temperature gradients.