Failure In Material Constructions

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BKTK-2011, Failure in material constructions
FAILURE IN MATERIAL
CONSTRUCTIONS
1
BKTK-2011, Failure in material constructions
2
BKTK-2011, Failure in material constructions
The cause of failures
Inadequate equipment design
Improper material construction selection
Improper material construction processing
Miss-use in equipment operation
Failure in material constructions is very difficult to avoid.
3
BKTK-2011, Failure in material constructions
Continuous plastic deformation
brittle fracture
ductile fracture
Strain,
Stress,
4
BKTK-2011, Failure in material constructions
Crack & Propagation
Ductile fracture (“patahan bahan liat”)
Stress concentration is followed by crack formation
Crack propagation is relatively slow
Large plastic deformation before fracture
Brittle fracture (“patahan bahan getas”)
Stress concentration is followed by crack formation
Crack propagation is relatively fast
Small plastic deformation before fracture
5
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Tags: bktk ppt.