What Causes Windshield Spontaneous Cracking?

[DelAubrey]

Here are the specific reasons for spontaneous cracking of car windshields: 1. Thermal cycling during laminated glass processing: Spontaneous cracking of car windshields usually occurs at the edges of the glass. The main reason is that during the laminated glass processing, heating and cooling cause the glass to develop internal tensile stress and surface compressive stress. These forces remain stable when balanced, but if not, spontaneous cracking can occur. 2. Excessive temperature variation: If car glass is exposed to intense sunlight and then comes into contact with cold water, the excessive temperature variation can also lead to glass cracking. In such cases, you should pull over immediately and avoid continuing to drive.