Failure analysis

1. Cause of failure in components.
Mayuresh Mane
213118011

2. Termination of ability to perform required operation
(Not doing something that is expected to do.)
Components not performing the expected operations like
transfer of motion in GEARS , holding and supporing
the structures in case of BEAMs & COLUMNS.

3.  Improper Material Selection.
 Design Error.
 Assembly Error.
 Manufacturing Defects.
 Improper Maintenance.
 Improper Storage.

4.  Unknown material properties.
 defects in Raw material.
 Material unable to withstand loadings, Environmental
conditions.

5. * Incorrect
- Design procedure.
- Material constants.
- Loading conditions.
- Dimensions.
* Error in calculating parameters.

6.  Mismatch in components dimensions, will
cause stress concentration.
 e.g. Nut & bolt

7.  Incorrect mfg. process.
 mfg. process born defects.
casting - like porosity, shrinkage(cracks)
Rolling – lamination , cracks
 Incorrect environmental conditions.

9.  periodic Assesment.
 Improper maintenance leads to change of surface
conditions of components.
- corrosion,
- uneven friction
- change of dimension.
* vibrations from base surface.**

10.  Even we know the cause of failure prevention of
failure is difficult to guarantee.