×
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

ACFM for Chloride Cracking

ACFM for Chloride Cracking

ACFM for Chloride Cracking

(OP)
Does anyone have a good feel for the ACFM technique for detecting Chloride Cracking in 316L S/S grade material, 3/8th thick.  The cracking is external on a pressure vessel.  Failure Analysis of a sample piece concluded that the cracking is only about 0.030" - 0.040" in depth, scattered at attachment welds (i.e. lifting lugs, stiffener rings, re-pads).

RE: ACFM for Chloride Cracking

I haven't heard of ACFM being used for this purpose in the field. As ACFM was developed for detecting fatigue cracks (single) it would be worth a test to see how it response to the normal multiple cracks associated with SCC. The ability to test through nonconductive coatings or crude certainly would speed things up.

I just called a supervisor for a large inspection company about your approach. He stated that he hasn't been directly involved with the introduction of ACFM to his company and hasn't heard of any explicit applications in detecting SCC. They do a lot of work offshore and that is where their interest is. He also stated that it would be a good application to qualify.

RE: ACFM for Chloride Cracking

It sounds like it might work.  You would be doing the development.  A lot of people would thank you.

= = = = = = = = = = = = = = = = = = = =
Plymouth Tube

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