Repeat Problem 4 49 for window glass Problem 4 49 A slab of polycrystalline aluminum oxide is to be pulsed with a laser to produce a temperature of 900C at a depth of 0 2 mm after a time of 0 2 s The solid is initially at 40C Calculate the strength of pulse required expressed in MJ m2 ...

Repeat Problem 4-49 for window glass. Problem 4-49 A slab of polycrystalline aluminum oxide is to be

Question:

Repeat Problem 4-49 for window glass.
Problem 4-49
A slab of polycrystalline aluminum oxide is to be pulsed with a laser to produce a temperature of 900ºC at a depth of 0.2 mm after a time of 0.2 s. The solid is initially at 40ºC. Calculate the strength of pulse required expressed in MJ/m2.