×
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

How Test it??

How Test it??

How Test it??

(OP)
Hello
I am new and i have a

I have some tubular components with steel material 20MnB. This component diameter (100 thickness /thickness/3.8mm /lenght 600mm) is transformed (with stamping tools)to a "U" shape.This component basically works under torsional loads applied on each extremity.
I want to characterize this material under fatigue situation. I need the curve e-N, / cyclic curve for material / strain-life curve

But, I do not know followings:

1. How i can extract / obtain a good specimen test from torsion beam, and therefore have a realistic material behavior?
it is difficul to extract  this specimen and others with same geometry, basically because it is formed in a U shape as i said before, an the exterior the surfaces could be not totally regular

2. Do you know any standard / instruction that could define how i have to proced to charaterize this type of tubular components?

3. How many specimens i need to test under fatigue loads, to obtain a real e-N curve

Please, could be one one help me?. I am not an expert

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! Already a Member? Login


Resources

White Paper - PLM and ERP: Their Respective Roles in Modern Manufacturing
Leading manufacturers are aligning their people, processes, and tools from initial product ideation through to field service. They do so by providing access to product and enterprise data in the context of each person’s domain expertise. However, it can be complicated and costly to unite engineering with the factory and supply chain. Download Now
White Paper - Medical Device Design Control
Medical device product development is a highly integrated and regulated process. Implementation of a requirements tracking solution requires attention to a variety of nuanced topics. When presented with the task of tracking the many concept relationships in a project of this type, the initial software solution of choice tends to be a two-dimensional text systems. Download Now

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