Autoglass Repair Washington DC

21 Jan

Causes for Cracked Windshield in Washington DC

Posted in Uncategorized on 21.01.11 by Merlyn

Windshield undergoes many abuses right from temperature changes to road vibration and car body frame shears to road debris. This is due to glass expansion and shrinks at a slower rate than the metal body frame it is located in, during temperature changes. Consider this, for an instance a rise in ambient temperature, the expanding metal pushes in on the sides of the windshield; conversely, a decrease in the ambient temperature exerts a pulling force on the edges of the windshield.
Just try thinking this scenario and in addition to temperature stress, the constant pulling and pushing of the windshield from the body frame absorbing road impact. A stress gradient exists within the windshield. The highest stress occurs around the edges and lessens gradually approaching the centre point of the windshield.
Then a rock hits the windshield and creates an opening. Usually the windshield could distribute temperature and vibration stress to its neighbouring glass molecule. Now, however, tension would accumulate along the edge of the cracked windshield in Washington DC until it travels down to the border of intact and separated glass. The extra tension causes the borderline intact glass to separate, since it is the next weakest point and would continue until something is done about it.

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