Ball impact is often a reliability, compliance and legal requirement to many industries. Risk of ball impact depends on the specific application. Taking the smart watch as an example, ball impact may lead to,
- Cover glass cracking
- Cosmetic defects such as crack, dent or scratch
- PSA failure
- LED screen damage
- Internal clearance closure
Interpretation of cover glass cracking requires characterization of the material. Ball drop test on glass is usually recommended. Test condition can be repeated in simulation so that consistent mesh density can be used to avoid mesh sensitivity issue.
