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Technical Discussions
Yoganathan
Yoganathan
06:35 Jul-10-2018
Coarse grained material

During ultrasonic testing in coarse grained material velocity will increase or decrease why?

 
 Reply 
 
Michel Couture
NDT Inspector,
consultant, Canada, Joined Sep 2006, 897

Michel Couture

NDT Inspector,
consultant,
Canada,
Joined Sep 2006
897
23:53 Jul-10-2018
Re: Coarse grained material
In Reply to Yoganathan at 06:35 Jul-10-2018 (Opening).

what happens with a coarse grain material is that it will attenuate the sound beam. You will therefore be required to decrease your frequency. Many procedure suggest 1 or even 0.5 MHz.

 
 Reply 
 
Michel Couture
NDT Inspector,
consultant, Canada, Joined Sep 2006, 897

Michel Couture

NDT Inspector,
consultant,
Canada,
Joined Sep 2006
897
04:14 Jul-11-2018
Re: Coarse grained material
In Reply to Yoganathan at 06:35 Jul-10-2018 (Opening).

what happens with a coarse grain material is that it will attenuate the sound beam. You will therefore be required to decrease your frequency. Many procedure suggest 1 or even 0.5 MHz.

 
 Reply 
 
SULTAN KHAN
Engineering, NDT SUPERVISOR
MK FASTENERS BOMMASANDRA BANGALORE, India, Joined Jun 2017, 2

SULTAN KHAN

Engineering, NDT SUPERVISOR
MK FASTENERS BOMMASANDRA BANGALORE,
India,
Joined Jun 2017
2
10:37 Jul-11-2018
Re: Coarse grained material
In Reply to Yoganathan at 06:35 Jul-10-2018 (Opening).

BECAUSE OF ATTENUATION OF MOLECULES BETWEEN THEM SO THAT IS REASON TO DECREASE A VELOCITY

 
 Reply 
 

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