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 -

598 views
Technical Discussions
Atul Deulgaonkar
Atul Deulgaonkar
07:44 May-19-2001
Ultrasonic testing of forged shaft

While testing it is observed a number of times that shafts do not give any back wall echo even at full gain and using probes of very low fequencies like 1Mhz or 0.5Mhz.
What is interpretation of this phenomenon ?


 
 Reply 
 
Anonymous
Anonymous
01:27 May-19-2001
Re: Ultrasonic testing of forged shaft
: While testing it is observed a number of times that shafts do not give any back wall echo even at full gain and using probes of very low fequencies like 1Mhz or 0.5Mhz.
: What is interpretation of this phenomenon ?
.
Try various Pulse Repitition Rates and a 2.25 MHz. Transducer.


 
 Reply 
 
Dr. Patel
R & D, Consultant to Universities/Industries
Fallon Ultrasonics/McMaster University, Canada, Joined May 2001, 20

Dr. Patel

R & D, Consultant to Universities/Industries
Fallon Ultrasonics/McMaster University,
Canada,
Joined May 2001
20
06:44 May-19-2001
Re: Ultrasonic testing of forged shaft
: : While testing it is observed a number of times that shafts do not give any back wall echo even at full gain and using probes of very low fequencies like 1Mhz or 0.5Mhz.
: : What is interpretation of this phenomenon ?
: .
: Try various Pulse Repitition Rates and a 2.25 MHz. Transducer.

There are many reasons for that and if you can send us details on probe diameter and contact face, PRF and energy on your pulser, perhaps we can help you interprete the phenomenon. Beam divergence, contact losses, losses due to material properties etc plays a role, however, first we have to establish the sensor and instrument you are using is OK than we can deal with other problems.

Regards

Dr. Patel



 
 Reply 
 

Product Spotlight

Echomac® PA Tube Weld Tester

The new robotic Echomac® PA TW is an operator friendly test system for detecting weld zone defects
...
in tube and pipe caused by scarfing or welding processes. Electronic scanning ensures that the entire weld zone is covered without the need for mechanical movement or operator adjustment.
>

VOGT Ultrasonics awarded innovation champion

Let go of the old and try something new. VOGT convinced the jury in the 27th round of the TOP 100
...
innovation competition. Our team is very pleased to officially belong to the TOP 100 in Germany!
>

Research Center IDEKO develops an ultrasonic train wheel inspection system for CAF

The Basque Research centre IK4-IDEKO has developed a state-of-the-art ultrasonic inspection system f
...
or the train wheel. This system secures a sound condition of train wheels and is thus a significant contribution to rail transport safety. The device was delivered to CAF recently and its use allows the manufacturer to become an approved supplier of rolling stock in Italy, as it meets the demanding homologation standards of this country. \\\\r\\\\n
>

TraiNDE UT

TraiNDE UT is a virtual tool associated with a signal database which simulates real inspection con
...
ditions for numerous applications (Type A/V1 block, DAC block, welds and plates).
>

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