Composites and epoxy, was Re: Coilovers $195 for all A1's

[jdbubb at ix.netcom.com (Dan Bubb)]

Riveting and bonding/gluing has been a common construction in aircraft for over 30 years. Bonding by
itself without riveting? I kind of doubt this. Bonded epoxy joints have good shear strength, but
poor peal strength, so you typically need mechanical assistance to prevent pealing.

As far as composite use in aircraft it is most definitely not confined to non-structual
applications.
Examples are the one piece wing skins on the Joint Stike Fighter.
Harzell's composite blade propeller that has an "unlimited service life designation from the FAA."
F-22 Raptor is 24% composite construction BY WEIGHT! including use in the fuselage frame and for
wing spars.

Dan


>I can assure you they are not.
>(at least not the ones built in the USA)
>Some of the non load-bearing surfaces are of a composite nature (epoxy being one of the
components), but the structural pieces >are not epoxied.
>Larry
  ----- Original Message -----
  From: Marc_Scirocco_Qu?bec
  To: Adam J Garside ; scirocco-l@scirocco.org
  Sent: Thursday, January 22, 2004 7:28 PM
  Subject: RE: Coilovers $195 for all A1's


  Aren't modern jet fighter's wings glued (epoxied) together?

  My Trek mountain bike is. Not that it sees that much stress these days.

  Cheers.

  Marc
  '83 Scirocco
  '97 A4

  > -----Message d'origine-----
  > De : scirocco-l-bounces@scirocco.org
  > [mailto:scirocco-l-bounces@scirocco.org]De la part de Adam J Garside
  > Envoy? : jeudi 22 janvier 2004 08:49
  > ? : scirocco-l@scirocco.org
  > Objet : Re: Coilovers $195 for all A1's
  >
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  > The Lotus Elise is held together with Epoxy.
  > It consists of extruded aluminium, bonded together to make a rigid
  > "Bathtub" chassis.
  >