Question

Cracks in brittle materials can often be stopped from propagating by drilling a hole just in front of the crack tip (this is a common practice in some windshield repairs to prevent further cracking). Explain in a few sentences why this approach can be effective in stopping the crack.

Answer 1

solution:

we do so because we want to release the stress ,which is applied on the place where brittle occurs.

by doing drilling just in front of the crack tip >we can further reduce cracks in brittle materials .

for more information: you can read here : i ma providing you a link.

https://www.sciencedirect.com/topics/materials-science/brittle-fracture