Why does car glass suddenly explode?
2 Answers
Car glass may suddenly explode due to: 1. External force impact; 2. Thermal expansion and contraction caused by high interior temperature and low exterior temperature. The main types of car glass include laminated glass, tempered glass, and zoned tempered glass, which can withstand strong impacts. Car glass is categorized by location into: front windshield, side windows, rear windshield, and sunroof glass. Methods for maintaining car glass include: 1. Using a soft cloth when cleaning the car to avoid damaging the glass; 2. Washing with glass cleaner; 3. Applying a protective film promptly to block sunlight and UV rays, preventing glass from cracking; 4. Regularly replacing seals to prevent leaks caused by aging.
Sudden car glass shattering is quite common, usually caused by drastic temperature changes. For example, in summer when the car is exposed to the sun and then the air conditioning is turned on, or in winter when the heater is suddenly turned on, the uneven expansion and contraction of the glass create stress concentration. Small stones or hard object impacts can also cause cracks to spread rapidly, especially at high speeds. The glass itself has a lifespan, and aging makes it more prone to problems. I've experienced this situation before—sudden shattering on the highway was quite frightening. It's advisable to use sunshades when parking to avoid sudden temperature changes. If small cracks are noticed, repair them immediately to prevent potential safety hazards.
