thermal fatigue
Engineering term for material degradation caused by repeated thermal expansion and contraction.
Metal parts can develop cracks due to thermal fatigue.
Medical condition caused by overheating, often from prolonged exposure to high temperatures or strenuous activity.
Heat exhaustion is one type of heat-related illness.
熱射病 (heatstroke) is a more severe condition than 熱疲労 (heat exhaustion), often involving a body temperature above 40°C and central nervous system dysfunction.
Compound of 熱 (heat) and 疲労 (fatigue), directly corresponding to the English terms 'thermal fatigue' and 'heat exhaustion'.