where expertise comes together - since 1996 -

The Largest Open Access Portal of Nondestructive Testing (NDT)

Conference Proceedings, Articles, News, Exhibition, Forum, Network and more

where expertise comes together
- since 1996 -
428 views
Technical Discussions
Vu
NDT Inspector,
Vietnam, Joined Sep 2017, 3

Vu

NDT Inspector,
Vietnam,
Joined Sep 2017
3
16:50 Mar-30-2018
PAUT

Dear Experts !

When I perform PAUT for the weld (butt weld) with two thickness (Ex. pipe to elbow or T-pipe) by sector scan 35 - 70 degree,
I make two scan plans:
- One for lower thicknes
- One for higher thickness
But the data came from higher thickness (elbow, T-pipe) not exactly.
Can you explain and show me the way to improve inspection for this weld.

Thanks in advance for your help !

 
 Reply 
 
Rupam
Rupam
18:09 Mar-30-2018
Re: PAUT
In Reply to Vu at 16:50 Mar-30-2018 (Opening).

There is thickness variation in both sides. So in higher thickness side, grinding is done in ID face to make proper root fitup. So its difficult to know at what ratio thickness is reducing. And you will not get expected reflection from ID surface . Thats why sometimes you will get indication inside the weld zone which is geometry actually.

 
 Reply 
 
Vu
NDT Inspector,
Vietnam, Joined Sep 2017, 3

Vu

NDT Inspector,
Vietnam,
Joined Sep 2017
3
15:55 Apr-06-2018
Re: PAUT
In Reply to Rupam at 18:09 Mar-30-2018 .

Dear Rupam
Thanks a lot for your explain.
So do you have any guidance to inspection this type of weld ?

 
 Reply 
 
Rupam
Rupam
16:54 Apr-06-2018
Re: PAUT
In Reply to Vu at 15:55 Apr-06-2018 .

For this kind of joints, I think TOFD will be more helpful than PAUT. In PAUT there will be chance of misinterpretation.

 
 Reply 
 

Product Spotlight

PROlineTOP Plug & Play Ultrasonic inspection device

As Plug & Play solution it units all control and operation elements in a small housing and therefo
...
re replaces the typical control cabinet...
>

Aerospace Systems - Automated Ultrasonic Inspection

USL are specialists in the design and manufacture of turnkey ultrasonic inspection systems for aer
...
ospace applications. From monolithic composites to complex honeycomb structures. This video shows just a few examples of what is possible, find out more at: www.ultrasonic-sciences.co.uk
>

High-performance Linear Phased Array Probes

Available to order from stock in a range of 5MHz – 7.5MHz and from 16 to 64 elements. Designed w
...
ith piezo-composite elements, Phoenix phased array probes provide high-resolution imaging to maximise sensitivity; accurate ultrasonic detection and sizing of defects in welds; and effective corrosion mapping. Housed in a rugged stainless steel case for on-site industrial NDT applications.
>

EKOSCAN Phased Array

In order to always fit your needs, EKOSCAN can manufacture any type of UT transducer, either convent
...
ional or Phased Array. As an ISO 9001: 2015 certified company, EKOSCAN is extremely careful as far a material selection and manufacturing processes are concerned. Our probes guarantee our customers the benefits of latest innovations regarding piezo-composite, backing, impedance adaptation layer, etc. Specific probes for hostile environment: high temperature, high pressure, corrosive environment,etc. Specific probes designed to fit your specific application: optimization of every parameter to guarantee you the best detection.
>

Share...
We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info
Accept
top
this is debug window