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 -
882 views
Technical Discussions
David Bunch
David Bunch
10:39 Mar-12-2010
IIW Block Type 2 for .25" wedge calibration

The Level III of my company pulled out his type 2 IIW block the other day. I noticed that it wasn't possible to calibrate a .25" angle beam wedge while still having the having the hash marks directly below the BIP of the probe. The recessed edge of the IIW type 2 was too far away laterally to be picked up by the probe. I was only able to pick up the 4" signal, not the 2".

So, my question is- Do they make IIW Type 2 blocks with hash marks on both sides for doing 2" & 4" linearity calibrations with a small wedge?

 
 Reply 
 
Michel Couture
NDT Inspector,
consultant, Canada, Joined Sep 2006, 868

Michel Couture

NDT Inspector,
consultant,
Canada,
Joined Sep 2006
868
19:02 Mar-12-2010
Re: IIW Block Type 2 for .25" wedge calibration
In Reply to David Bunch at 10:39 Mar-12-2010 (Opening).

David,

In all my time in NDT, I can't say I came across such a thing. The other thing that comes to mind is that it would be very difficult and may also give you some calibration error by moving your probe on each side of the IIW block to get the 2" than the 4". When you calibrate with such a block, you should position your transducer so that you will obtain a signal on your screen from the 2" and 4" simultaniously. In your case, this would require to place your transducer at the "0" mark and in the middle of the block thickness.

On easy way to solve your problem would be to use a fine tip waterproof marker and using a square, draw the line for the "0" mark across the width of the block. This way you would be able to maximize your signal and obtain a 2" and 4" signal on your screen.

Hoping this will e of help,
Cheerio's

 
 Reply 
 
Phil Herman
Sales, - Manufacture of NDT Reference Standards/Test Blocks
PH Tool Reference Standards, USA, Joined Oct 1999, 79

Phil Herman

Sales, - Manufacture of NDT Reference Standards/Test Blocks
PH Tool Reference Standards,
USA,
Joined Oct 1999
79
00:32 Mar-13-2010
Re: IIW Block Type 2 for .25" wedge calibration
In Reply to David Bunch at 10:39 Mar-12-2010 (Opening).

David,
The "industry-standard" IIW-Type 2 (Inch version) block contains the 60 to 80 degree scale on the face opposite the scale you are using to pick up the 4" and 2" signals. Placing a second radii centerline scale would shorten the 60-80 scale to 75 degrees (perhaps not a major roadblock), but would potentially lead to some confusion. We'd be happy to make you a special block that contains two identical radii scales. It may also be helpful to consider a narrower block width of 0.500" (12.7mm). Contact me if you are interested in pursuing this further.
Phil Herman
PH Tool Reference Standards

 
 Reply 
 
David Bunch
David Bunch
20:48 Mar-13-2010
Re: IIW Block Type 2 for .25" wedge calibration
In Reply to Phil Herman at 00:32 Mar-13-2010 .

Phil, I see that the mini-IIW block on the PH Tool website has a hash mark on the side of the recessed curvature. It appears to me that this would allow angle beam calibration with a .25" wedge. Is there any way you could test this out for me?

http://www.phtool.com/store/prodimages/miniiiw2lg-white-2ndhole.jpg

 
 Reply 
 

Product Spotlight

NDT Master Lecturer

In the program both university professors and practitioners will give lectures, which guarantees the
...
oretical depth and practical inside. Academic Director: Prof. Dr. Christian Boller
The following lecturers are not complete: Prof. Tadeusz Stepinski, Prof. Wieslaw Staszewski, Prof. Frank Walther, Prof. Giovanni Bruno, Prof. Gerd Dobmann, Prof. Philippe Guy
>

HARDNESS TESTER TKM-459CE combi

TKM-459CE combi applies 2 methods of hardness control: UCI and Leeb. It provides high-accuracy tes
...
ting of metals and alloys as well as items of different sizes and configurations, their hardened layers and galvanic coatings. Device represents results in HB, HRC, HV and others. Shock-, dust- and water-proof housing with intuitive software make this gauge easy to use in all working conditions.
>

IntraPhase Athena Phased Array System

The Athena Phased Array system, manufactured by WesDyne NDE Products & Technology, consists of a pha
...
sed array acquisition system and PC running IntraSpect software. A PC is used to perform acquisition, analysis and storage of the data. System hardware is capable of operating up to four data sets with any combination of phased array or conventional UT probes. NOW AVAILABLE IN 64-64 CONFIGURATION.
>

Wireless TOFD scanner

Quick, accurate and highly reproducible welds testing. The System operates wirelessly and is compat
...
ible with any type of Windows based Laptop, Desktop or Tablet.
>

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