Hello Karthi Keyan,
Lamellar tear is extremely difficult to detect. It's the final stage of failure. Good UT techniques such as TOFD could detect major defects such as inclusion shape and distribution and major indications such as lamination. Note always lamination does not mean failure by lamellar tear.
One good way to prevent lamellar tear is asking for "z" direction tensile properties, % EL of 25% or more helps to prevent such failures, in addition to manufacturing route for clean steel. I do not have the reference handy, however from earlier experience in "Offshore projects" I've seen this Z direction tensile requirements for thick plates.
Hope the attached links will help you to understand the subject.
Thanks
Pradip Goswami, P.Eng,IWE
Welding & Metallurgical Specialist
Ontario, Canada
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com]
Sent: Thursday, July 03, 2014 12:09 PM
To: materials-welding@googlegroups.com
Subject: [MW:21320] Lamellar tearing
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
No comments:
Post a Comment