Heat transfer and dimensional response need different checks
- Thermal conductivityThis term
Heat follows the temperature gradient through the material. Geometry, contact interfaces and temperature affect the complete thermal path.
- Thermal expansion coefficient
The exaggerated length change illustrates thermal expansion. Use the actual coefficient and temperature range for dimensional checks.
- Warpage
Uneven deformation changes the component shape. Check processing, reinforcement, geometry and the relevant dimensional limits.
- Thermal cycling
Repeated heating and cooling stress materials and interfaces. Specify range, rate, dwell time and cycle count for the duty.
- Heat sink / thermal management
Heat moves into the sink and then to its surroundings. Evaluate interfaces, airflow and the complete assembly’s temperature conditions.
Heat can flow through a material, while temperature change alters dimensions and stresses the assembly. A heat sink adds a thermal path but does not specify every component’s temperature.
Qualitative thermal paths and exaggerated dimensional changes. No conductivity value, expansion coefficient or cooling capacity is implied.