Sponsor Message:
Aviation Technical / Operations Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
TiGr Vs Glare  
User currently offlineAirbuske From United States of America, joined Jun 2007, 466 posts, RR: 0
Posted (6 years 3 months 2 weeks 5 days 10 hours ago) and read 3002 times:

The demands for both military and commercial aircraft to fly faster and longer than ever before have led to the rapid advancement of structural materials. The industry requires these materials to exhibit improved damage tolerance and strength at extreme temperatures, improved resistance to corrosion and an increased fatigue life.

Airbus chose GLARE for the A380 program and Boeing has gone with TiGr for the 787 program. I know that GLARE is Al/Glass fibre while TiGr is Titanium/Graphite fibre, but what are the pros and cons of the two? What other composite laminates are widely used in the aerospace industry?

3 replies: All unread, jump to last
 
User currently offlineTdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 1, posted (6 years 3 months 2 weeks 4 days 14 hours ago) and read 2925 times:



Quoting Airbuske (Thread starter):
Airbus chose GLARE for the A380 program and Boeing has gone with TiGr for the 787 program. I know that GLARE is Al/Glass fibre while TiGr is Titanium/Graphite fibre, but what are the pros and cons of the two? What other composite laminates are widely used in the aerospace industry?

Well, I know next to nothing about TiGr but, based just on what you've said, it's going to be a lot more expensive and heat tolerant than GLARE. With composites all things are variable, but the on-axis modulus of TiGr is going to be higher than GLARE for similar construction (fiber and metal fractions).

Tom.


User currently offlineAirbuske From United States of America, joined Jun 2007, 466 posts, RR: 0
Reply 2, posted (6 years 3 months 2 weeks 1 day 18 hours ago) and read 2832 times:



Quoting Tdscanuck (Reply 1):
but the on-axis modulus of TiGr is going to be higher than GLARE for similar construction (fiber and metal fractions)

What do you mean buy on-axis modulus?


User currently offlineTdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 3, posted (6 years 3 months 2 weeks 1 day 14 hours ago) and read 2817 times:



Quoting Airbuske (Reply 2):
Quoting Tdscanuck (Reply 1):
but the on-axis modulus of TiGr is going to be higher than GLARE for similar construction (fiber and metal fractions)

What do you mean buy on-axis modulus?

Fiber reinforced composites are highly anisotropic (their material properties vary depending on what direction you test them). "On-axis" means in line with the fibers. The primarily load carrying element will be the fiber itself and, since graphite is stiffer than glass, you'll get a higher modulus (for the same fiber fraction). Off-axis, the load is shared much more with the matrix and the stiffness is a lot lower.

If you have multi-ply laminates with multiple fiber directions the effect isn't so pronounced although, for equal layups and fiber fractions, I'd expect TiGr to be stiffer than GLARE.

Tom.


Top Of Page
Forum Index

Reply To This Topic TiGr Vs Glare
Username:
No username? Sign up now!
Password: 


Forgot Password? Be reminded.
Remember me on this computer (uses cookies)
  • Tech/Ops related posts only!
  • Not Tech/Ops related? Use the other forums
  • No adverts of any kind. This includes web pages.
  • No hostile language or criticizing of others.
  • Do not post copyright protected material.
  • Use relevant and describing topics.
  • Check if your post already been discussed.
  • Check your spelling!
  • DETAILED RULES
Add Images Add SmiliesPosting Help

Please check your spelling (press "Check Spelling" above)


Similar topics:More similar topics...
"Line Up" Vs "To Position" In Canada posted Mon Mar 31 2008 21:27:09 by RomeoMike
Early 737s Vs NG - Are Any Parts Still The Same? posted Mon Mar 24 2008 17:22:36 by Viscount724
MD-80 Vs 737-400 Economics posted Mon Mar 17 2008 09:13:24 by 1337Delta764
Service Life 747Classic Vs 744 Vs 748I posted Sat Mar 15 2008 05:09:16 by NA
767 Vs 330 Mx Ease posted Sat Mar 1 2008 13:21:48 by Venus6971
Not Your Ordinary East Vs West Thread posted Thu Feb 21 2008 00:21:35 by LockstockNL777
DC10 Vs MD10 posted Thu Feb 14 2008 05:06:07 by RampGuy
Take-off Runway Length Vs Length Of Runway posted Tue Feb 12 2008 15:02:13 by CRJ900
Civil Aviation Vs Commerical - Who Has Priority posted Sun Feb 3 2008 21:47:05 by Arcrftlvr
Not Your Ordinary A Vs B Thread posted Sat Feb 2 2008 11:02:40 by BravoGolf

Sponsor Message:
Printer friendly format