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Technical Discussions
Leandro
NDT Inspector, Quality Enginner / Specialist of Quality Control / NDT Supervisor
Brazil, Joined Jul 2013, 11

Leandro

NDT Inspector, Quality Enginner / Specialist of Quality Control / NDT Supervisor
Brazil,
Joined Jul 2013
11
21:56 Aug-12-2019
HDPE pipe ultrasound inspection

Hello Friends,
By any chance does anyone have any experience with ultrasound inspection on HDPE (polyethylene pipe materials), welding through the ERW process. Someone would know me, which technique is most recommended, what type of probes, calibration blocks, technical data, any information is welcome. Thank you all!
Leandro.

 
 Reply 
 
Edward Ginzel
R & D, -
Materials Research Institute, Canada, Joined Nov 1998, 1274

Edward Ginzel

R & D, -
Materials Research Institute,
Canada,
Joined Nov 1998
1274
13:17 Aug-13-2019
Re: HDPE pipe ultrasound inspection
In Reply to Leandro at 21:56 Aug-12-2019 (Opening).

Leandro, I am not aware of HDPE pipe being joined using the ERW process. Generally 3 options are used; butt fusion, electrofusion (coupling joints) or glue.
Glued joints are not usually UT tested. The electrofusion joints are tested with a small 0° beam that allows resolution of the wires.
There is an ASTM standard that addresses methods for ultrasonic testing of butt fusion joints (ASTM E3044). That document describes using TOFD and/or phased-array UT. We described some of the issues in articles on NDT.net (https://www.ndt.net/article/ndtnet/2017/1_Ginzel.pdf, https://www.ndt.net/article/ndtnet/2016/11_Ginzel.pdf) whereby we used a low velocity polymer to provide positive refraction in HDPE. You can see the wedge design provided by Innovation Polymers on the NDT.net news item https://www.ndt.net/search/docs.php3?id=23490


 
 Reply 
 
Leandro Santos
NDT Inspector, Quality Enginner / Specialist of Quality Control / NDT Supervisor
Brazil, Joined Jul 2013, 11

Leandro Santos

NDT Inspector, Quality Enginner / Specialist of Quality Control / NDT Supervisor
Brazil,
Joined Jul 2013
11
18:10 Aug-13-2019
Re: HDPE pipe ultrasound inspection
In Reply to Edward Ginzel at 13:17 Aug-13-2019 .

Hello Ed, thank you very much for your reply, I will check the documents you mentioned. I believe it's a butt fusion welding. Thank you!

 
 Reply 
 

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