Based on fracture mechanics, the material will fail at stress .

The effects are so gradual that they may not be noticed until it's too late, when the material fails quickly.

These models tend to be more complex, as they try to incorporate everything we know about how the materials fail.

However it was well known that those materials would often fail at 1000 times less than this predicted value.

And the company is also the target of several shareholder lawsuits after a material in some of its body armor failed a federal safety test.

"You basically start from the outside and heat the pieces to a point where materials will fail," he said.

These men know how to be funny, even when the material they're given fails to be.

The relatively soft material failed to detonate the fuse and the shell is still there.

From these numbers it may be guessed what disturbances were caused in the commercial part of the town when the raw material failed altogether.

There is no backup if those materials fail.