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 -

1425 views
Technical Discussions
Ann Hsu
Ann Hsu
06:40 Feb-13-2007
NDT for polymers?

Hi,

I am trying to find a way to detect weak adhesion in polishing pads. The materials are polyurethane (with voids inside and grooves on the surface) and polymer coated on polyester substrate. The 2 pads are put together with PSA. Do you know if any NDT might work on this types of materials? The pad size is 30" in diameter.

Thanks,


    
 
 
Tom Nelligan
Engineering,
retired, USA, Joined Nov 1998, 390

Tom Nelligan

Engineering,
retired,
USA,
Joined Nov 1998
390
09:19 Feb-13-2007
Re: NDT for polymers?
In typical applications of thsi type, ultrasonic testing can readily detect the presence or absence of bonding between two polymer layers, but usually not the degree of adhesion in an adhesive bond, unless poor adhesion is associated with microporosity at the bondline rather than poor chemisty. If the polyurethane is grooved it will probably be necessary to test from the polyester side (assuming that it is smooth) to get uniform sound counpling. I am assuming that the polyester is fairly thin and that sound transmission through that layer won't be a problem.


    
 
 
Ann Hsu
Ann Hsu
00:33 Feb-13-2007
Re: NDT for polymers - lab services?
Thank you for the information. I would like to find out if any companies would provide such service. Most companies that offer NDT are for large structure (tanks, pipes). If you or any company you know that can do this kind of task please let me know. Maybe I should search for lab testing?

Thanks!!



    
 
 
Randy Plis
Sales,
Metals Testing Company, USA, Joined Jun 2002, 9

Randy Plis

Sales,
Metals Testing Company,
USA,
Joined Jun 2002
9
01:10 Feb-14-2007
Re: NDT for polymers - lab services?
----------- Start Original Message -----------
: Thank you for the information. I would like to find out if any companies would provide such service. Most companies that offer NDT are for large structure (tanks, pipes). If you or any company you know that can do this kind of task please let me know. Maybe I should search for lab testing?
: Thanks!!
------------ End Original Message ------------

Hello Ann,

Metals Testing Company is one such lab. We inspect metal and non-metal parts on both an R&D and production basis. We have various experience with bondline testing, based primarily on advanced UT C-Scan technology.

The best way to determine if your application can be satisfied by UT is to provide a calibration standard or a sample part that can be transformed into a cal standard. If interested, please contct us. Thanks.



    
 
 
P V SASTRY
R & D, NDT tecniques metallurgy
TAKEN VRS FROM THE POSITION OF SR. DEPUTY GENERAL MANAGER BHEL CORPORATE R&D, India, Joined Jan 2003, 195

P V SASTRY

R & D, NDT tecniques metallurgy
TAKEN VRS FROM THE POSITION OF SR. DEPUTY GENERAL MANAGER BHEL CORPORATE R&D,
India,
Joined Jan 2003
195
00:23 Feb-15-2007
Re: NDT for polymers - lab services?
Dear Sir,

I am heading SSVS METALLURGICAL AND NDT SERVICES based in Hyderabad, India. We do lot of UT and other NDT particularly relevant to RLA of Thermal Power Plants. Our message is almost same in that we under take UT of metallic and non metallic parts on both production and R & D basis. We have carried out c scans of various parts including bond testing of brazed joints using an advanced UT set up.

As rightly mentioned by Mr. Randy Plis the best way is to provide a calibration standard or two sample parts (one sound and the other with delibrately intorduced defects).We will test the firstpiece without any finacial implications to either side.
If interested, please contct us.

Thanks

P V SASTRY

----------- Start Original Message -----------
: : Thank you for the information. I would like to find out if any companies would provide such service. Most companies that offer NDT are for large structure (tanks, pipes). If you or any company you know that can do this kind of task please let me know. Maybe I should search for lab testing?
: : Thanks!!
: Hello Ann,
: Metals Testing Company is one such lab. We inspect metal and non-metal parts on both an R&D and production basis. We have various experience with bondline testing, based primarily on advanced UT C-Scan technology.
: The best way to determine if your application can be satisfied by UT is to provide a calibration standard or a sample part that can be transformed into a cal standard. If interested, please contct us. Thanks.
------------ End Original Message ------------




    
 
 
Rolf Diederichs
Director,
NDT.net, Germany, Joined Nov 1998, 605

Rolf Diederichs

Director,
NDT.net,
Germany,
Joined Nov 1998
605
01:06 Feb-15-2007
Re: NDT for polymers - lab services?
Ann Hsu,

It might help to mention where you are located and if no secret also you company name and a bit more about you application, for what the parts are needed, how many parts you need to test .... ?

Or are you interested in buying an equipment if the job can be done. In that case many equipment supplier will proof the capability of inspection free of charge.

Rolf

----------- Start Original Message -----------
: Thank you for the information. I would like to find out if any companies would provide such service. Most companies that offer NDT are for large structure (tanks, pipes). If you or any company you know that can do this kind of task please let me know. Maybe I should search for lab testing?
: Thanks!!
------------ End Original Message ------------




    
 
 

Product Spotlight

NOVO Armor 15 & NOVO Armor 22

The Armor Kit Contains the NOVO Armor, which provides additional mechanical protection to the NOVO 1
...
5WN & NOVO 22WN Detectors, the Armor Stand and a traveling soft cover. - Newest shock absorbent technology case - Water resistant design - Supports wired & wireless communication - Multiple positioning options - Tripod connection using the Built-in 1/4” threads - Simple Detector battery replacement
>

HD-CR 35 NDT Computed Radiography System

Portable high-resolution CR scanner for all radiography applications - weld testing, profile images
...
and aerospace. No matter what type of radiographic testing you are performing, the unique TreFoc Technology of the HD-CR 35 NDT imaging plate scanner always guarantees the highest image quality.
>

I&T Nardoni

NDT, RESEARCH AND DEVELOPMENT OF NEW METHODOLOGY, TRAINING CENTER I&T NARDON INSTITUTE was idiated
...
in 1988 by Giuseppe Nardoni, now president and owner of the company, based on his multi-annual and international experience in the field of NDT.
>

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.
>

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