Go Back  PPRuNe Forums > Flight Deck Forums > Tech Log
Reload this Page >

"Stop Drilling In Composit Material"

Wikiposts
Search

Notices
Tech Log The very best in practical technical discussion on the web

"Stop Drilling In Composit Material"

Thread Tools
 
Search this Thread
 
Old 20th January 2012 | 15:19
  #1 (permalink)  
Thread Starter
 
Joined: Feb 2008
Posts: 420
Likes: 3
From: In the Old Folks' Home
"Stop Drilling In Composit Material"

"Stop drilling" can sometimes be used as a temporary fix to stop the progression of cracks in metallic structures. Does anyone here know if stop drilling is effective in composite material?
Smilin_Ed is offline  
Reply
Old 20th January 2012 | 15:24
  #2 (permalink)  
 
Joined: May 2007
Posts: 184
Likes: 0
From: Bristol
Drilling any hole into a laminar composite structure is a Very Bad Idea™. In all likelihood, worse than the crack.
WillDAQ is offline  
Reply
Old 23rd January 2012 | 10:24
  #3 (permalink)  
Moderator
30 Countries Visited
25 Anniversary
Veteran: Reserves
 
Joined: Feb 2000
Aviation Qualifications: CPL
Posts: 14,480
Likes: 178
From: UK
I agree with Will.

The crack formation and propogation mechanism in composites is totally different to that in metals. All drilling will do is create new problems.

Properly authorised composite repairs will be needed, and quite possibly simply replacement of the component.

FAA's AC43-13 should contain some useful guidance on the topic. Try chapter 3; this gives guidance on stop drilling acrylics (perspex for example) but shows quite different approaches for laid up composites.

G
Genghis the Engineer is offline  
Reply
Old 23rd January 2012 | 11:39
  #4 (permalink)  
Thread Starter
 
Joined: Feb 2008
Posts: 420
Likes: 3
From: In the Old Folks' Home
Thanks

Thanks to both of you. You have answered my question.

Ed
Smilin_Ed is offline  
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.