Failureofmaterials
Upcoming SlideShare
Loading in...5
×
 

Failureofmaterials

on

  • 750 views

 

Statistics

Views

Total Views
750
Views on SlideShare
739
Embed Views
11

Actions

Likes
0
Downloads
34
Comments
0

2 Embeds 11

http://luyenkim.net 10
http://www.slideshare.net 1

Accessibility

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Failureofmaterials Failureofmaterials Presentation Transcript

  • Failure of Materials in Service
  • What is Failure? How is it defined?
  • Is this failure?
  • What about this?
  • Or this?
  • Familiar Failure
    • Conventional tensile failure mode that we are all familiar with.
  • Brittle Fracture
  • Ductile Fracture
  • Failure in Compression
  • Failure in Torsion
  • Failure in Bending
  • Stiff stuff getting bent!
  • Failure in little bits!
  • Sneaky failure
  • Fatigue Failure
  • Quietly in the hidden places failure
  • You would not be worrying about this failure at the time it occurred!
  • Will you ever fly in a plane again!
  • Bolting the door after the …..
  • Expensive can-opener!
  • A new slant on bird ingestion
  • Where did that runway go?
  • Brake failure or pilot error?
  • Pardon me sir!
  • This was frozen when I took off!
  • A watery grave
  • Why Failure?
    • All unanticipated mechanical failures must have a cause:
    • Designed incorrectly
    • Manufactured incorrectly
    • Mis-maintained
    • Mis-operated
  • Typical modes of failure
    •   tensile, compressive & shear
    •   bending (buckling)
    •   distortion, residual loads.
    •   creep (temperature / stress related)
    •   thermal shock
    •   corrosion (including stress corrosion)
    •   ageing
    •   wear, fretting
    • fatigue
    • And lastly, cracks in the fuselage!
  •