×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Composites/Polymers (Kevlar?) for defence application

Composites/Polymers (Kevlar?) for defence application

Composites/Polymers (Kevlar?) for defence application

(OP)
Hi all,

I am currently searching for a composite/poylmer in the form of a cylidrical/cone geometry (~60mm diam, L~200mm) that can withstand an axial (longitudinal) pressure of up to 550MPa with little deformation over a time period of approx. 5ms. Good ol' Matweb provides stats of Kevlar with UTS>3GPA and E~115GPa. But how good is it in compression, being a composite lay-up and all? Im open to suggestions of other materials. Any help would be gretly appreciated.

Cheers!


tsurani

"Catapultam habeo. Nisi pecuniam omnem mihi dabis, ad caput tuum saxum immane mittam."

RE: Composites/Polymers (Kevlar?) for defence application

Is the object rigid?  Can you use ceramic or carbide armor?

TTFN

RE: Composites/Polymers (Kevlar?) for defence application

(OP)
At this stage in the conceptual development, I dont see why not, as long as the said ceramic/carbide could withstand the aforementioned loads without brittle/impact failure. Ill be the first to admit I know little of ceramic behaviour. Could you perhaps provide data on applicable ceramics/carbide armour?

Thanks for the suggestion.

Cheers,

tsurani

"Catapultam habeo. Nisi pecuniam omnem mihi dabis, ad caput tuum saxum immane mittam."

RE: Composites/Polymers (Kevlar?) for defence application

Ceradyne and Simula are a couple of example companies that make a ceramic or carbide armor that's backed with a composite or Kevlar backing.  This allows the armor to take single hits wihout completely disintegrating as the backing material keeps the armor in place

TTFN

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources