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 -
581 views
Technical Discussions
John Wagner
Engineering
Tenneco Automotive, USA, Joined Apr 2004, 3

John Wagner

Engineering
Tenneco Automotive,
USA,
Joined Apr 2004
3
04:46 May-12-2004
Ultrasonic Testing of Adhesive Bonds

The product is an automotive suspension component consisting of a torus of rubber molded between and bonded to two
coaxial steel cylinders. Attempts to test the bond via ultrasonics required submersion of the product in water. The result, even if successful, is an unsaleable product. What is needed is a technique for evaluating the bond on prototypes developed to complete FMEA testing prior to full scale production. Any suggestions for an application generally applicable to a range of products of this type would be appreciated.


 
 Reply 
 
John O'Brien
Consultant, -
Chevron ETC , USA, Joined Jan 2000, 280

John O'Brien

Consultant, -
Chevron ETC ,
USA,
Joined Jan 2000
280
03:39 May-12-2004
Re: Ultrasonic Testing of Adhesive Bonds
Try calling NDT Automation Division of Physical Acoustics in Princeton New Jersey. Their T-SCOUT System may do the job.


 
 Reply 
 
Richard Kazares
Richard Kazares
06:00 May-13-2004
Re: Ultrasonic Testing of Adhesive Bonds
As you probably know, there are more ways than submersion in water to introduce an ultrasonic coupling techniques.

We have successfully used squirters, bubblers (weepers) - which use minute amounts of water only on the surface, and other elastomer couplants - which are typically used in wheel probes - but can also be fixed - WITHOUT any water couplant (or other gel-like materials) used.

Depending on your inspection requirements (I'm assuming you are looking for the bond between metal and elastomer - but you could possibly be looking at the elastomer consistency itself) there are other factors that might come into play.

I'd be happy to answer you directly - and in more detail, just send an e-mail.

----------- Start Original Message -----------
: The product is an automotive suspension component consisting of a torus of rubber molded between and bonded to two
: coaxial steel cylinders. Attempts to test the bond via ultrasonics required submersion of the product in water. The result, even if successful, is an unsaleable product. What is needed is a technique for evaluating the bond on prototypes developed to complete FMEA testing prior to full scale production. Any suggestions for an application generally applicable to a range of products of this type would be appreciated.
------------ End Original Message ------------




 
 Reply 
 

Product Spotlight

NDTkit RT

NDTkit RT, TESTIA's Digital Radiography software The NDTkit product line software for X-ray analysi
...
s. NDTkit RT is a software benefiting from the Ultis kernel which is dedicated to radiographic image analysis. It offers a set of tools and filtering processes to assist RT operators in finding relevant flaws.
>

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
>

Immersion systems

ScanMaster ultrasonic immersion systems are designed for high throughput, multi shift operation in a
...
n industrial or lab environment. These fully integrated systems provide various scanning configurations and incorporate conventional and phased arrays technologies to support diverse applications, such as inspection of disks, bars, shafts, billets and plates. All of ScanMaster immersion systems are built from high accuracy scanning frames allowing for scanning of complex parts and include a multi-channel ultrasonic instrument with exceptional performance. The systems are approved by all major manufacturers for C-scan inspection of jet engine forged discs. Together with a comprehensive set of software modules these flexible series of systems provide the customer with the best price performance solutions.
>

Conformable wedge transducer

The conformability is obtained with a flexible membrane filled with water between the transducer and
...
the inspected component. The coupling between the membrane and the component requires a small quantity of water or couplant. The conformable wedge combines the acoustic performance of immersion technique with good coupling and low attenuation.
>

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