Member Login

Remember Me
Forgot Password?
Join Us!

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!

Join Eng-Tips
*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.
Jobs from Indeed

Link To This Forum!

Partner Button
Add Stickiness To Your Site By Linking To This Professionally Managed Technical Forum.
Just copy and paste the
code below into your site.

HELP on desiging a fixture for cutting small tension test coupons

HELP on desiging a fixture for cutting small tension test coupons

Hie...Can anyone suggest me a fixture which is to be used to cut really small tension test coupons out of Al7075-T6.i need these for finding micro-scale strain inhomogenity. I'm planning to use  an NC milling machine

RE: HELP on desiging a fixture for cutting small tension test coupons

Make 'em like the big ones, only smaller.

In order to keep the milling cutter from bending the necked area, I'd laminate the rough blanks between two sheets of aluminum with hot-melt glue or Gorilla Glue, and boil them apart after machining.

Since you're using CNC, you might consider milling in sturdy bridges around the test section, that you can remove with diagonal cutters or something similar after clamping the specimens in the testing machine's jaws.

I.e., something like this:

|   +---------------------+    |  (bridge)
|   |                     |    |
|   =======================    |   (test section)
|   |                     |    |
|   +---------------------+    |
+------------------------------+  (bridge)



Mike Halloran
Pembroke Pines, FL, USA

RE: HELP on desiging a fixture for cutting small tension test coupons

Hi Mike,

Thanks for your valuable idea.I would try that in my lab and let you know if I could make out one...

Avinash Pulapaka

Red Flag This Post

Please let us know here why the post below 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!


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close