Transcript Liberty Ships Presentation (Final).pptx

Liberty Ship – Brittle Fracture.
Rebecca Galvin
Ciarán O’Shea Brady
Victor Raucent
Zhe Su
What Are The Liberty Ships?
 World War II.
 ‘Build ships faster than the enemy could sink
them’
 Liberty Ships
 Welding v Rivets.
 Faster & Cheaper
 MAJOR DEFECTS
• Cracking on
hull and
deck.
• Some of the
ships broke in
half.
Why did this happen?
Summary
The Liberty Ships were not designed as normal ships
Three main reasons cause brittle fracture:
- Low temperature
- Micro cracks
- All-welded construction