×
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

Larsen-Miller Parameter and Hollomon Parameter

Larsen-Miller Parameter and Hollomon Parameter

Larsen-Miller Parameter and Hollomon Parameter

(OP)
Hello everyone,

I have a doubt and confusion, Please explain me why do we use LMP (Larsen-Miller Parameter) and HP (Hollomon Parameter), and do we use it only for 2 1/2 Cr - 1 Mo. materials (is it because we are using API - 934 A) ..?

WHAT is the use and basis of these parameters.. please explain me..??

If anyone have any software or excel sheet , please share it. I will be very gratefull..!!

Thanks.

RE: Larsen-Miller Parameter and Hollomon Parameter

The LMP and HP are parametric equations that can extrapolate the stress rupture time based on two of three known parameters - stress and temperature. These are equations based on an assumed thermal activation processes that causes creep rupture in metals, so they are very useful equations to predict how long a material in elevated temperature service will last before rupture.

These equations can be used on both carbon and low alloy steels that are subject to creep conditions in service. There is plenty of technical literature on this subject, and I have only provided a general overview.

RE: Larsen-Miller Parameter and Hollomon Parameter

(OP)
Metengr,

thank you very much for your explaination.

Could suggest me some good literarure were I cxan read about theses two parameters in detail.

RE: Larsen-Miller Parameter and Hollomon Parameter

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