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Fractures

Fracture is the separation of an object or material into two or more pieces under the action of stress. The fracture of a solid usually occurs due to the development of certain displacement discontinuity surfaces within the solid. If a displacement develops perpendicular to the surface, it is called a normal tensile crack or simply a crack; if a displacement develops tangentially, it is called a shear crack, slip band or dislocation.Brittle fractures occur with no apparent deformation before fracture. Ductile fractures occur after visible deformation. Fracture strength, or breaking strength, is the stress when a specimen fails or fractures. The detailed understanding of how a fracture occurs and develops in materials is the object of fracture mechanics. more »

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 Become A Better Singer In Only 30 Days, With Easy Video Lessons!

Isn’t it strange that we’re falling apart from the day that we started,
Isn’t it hard knowing these things are unspoken, we’re born to be broken.
Isn’t it strange, knowing we’re living our lives only borrowing time,
And isn’t it hard, getting through this.

You know it’s not easy getting through this,
All these things we know we can’t control
You know it’s not easy getting through this,
All these things we know we can’t control

Watching everything I know turned into dust when it was stone, they’re falling down, they’re falling down.
Things will come and things will go, the time they span is an unknown, they’re falling down, they’re falling down.

Do we ever get to see the place that we were told we’d meet,
When it’s all done, when we are over.
The day will come when it will cease, our life, our strength, our will to breathe, we’ve given up.

You know it’s not easy getting through this,
All these things we know we can’t control
You know it’s not easy getting through this,
All these things we know we can’t control

 Become A Better Singer In Only 30 Days, With Easy Video Lessons!