Stress and fatigue Flashcards
1
Q
does metal cracking occur in tension or compression
A
always tension
1
Q
a cold working procces where high-velocity small particles are bombarded onto a metal surface
A
Shot peening. the purpose is to make the metal stronger.
2
Q
what effect does shot peening the surfaces of a metal bar
A
it makes both sides of the bar affected by compression
3
Q
stages of metal fatigue
A
crack initiation, crack growth, and failure
4
Q
what is fatigue failure
A
the tendency ofa material to fracture by means of progressive brittle cracking under repeated alternating or cycling stress of an intensity considerably below the normal strength
