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Eddyfi

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Technical Discussions
Wieslaw Bicz
Wieslaw Bicz
03:42 Jun-03-1999
Grain size measurement with attenuation or scattering of ultrasonic waves

May be somebody knows good references concerning measurement of grain size using attenuation or scattering of ultrasonic waves.

I would be grateful for any comment.

Wieslaw Bicz

optel@optel.com.pl



    
 
 
Jairo Humberto Guzman
NDT Inspector, NDT researcher
Ecopetrol ICP, Colombia, Joined Nov 1998, 6

Jairo Humberto Guzman

NDT Inspector, NDT researcher
Ecopetrol ICP,
Colombia,
Joined Nov 1998
6
04:41 Jun-03-1999
Re: Grain size measurement with attenuation or scattering of ultrasonic waves
: May be somebody knows good references concerning measurement of grain size using attenuation or scattering of ultrasonic waves.

: I would be grateful for any comment.

: Wieslaw Bicz

: optel@optel.com.pl

Mr. Bicz

To measure grain size you have to have a good standars that represent diferen kinds of materials you wanto to examinate.
The attenuation, sacater, and ratio velocity will give you good results,
The grass showed in the display can also help to measunre the grain size.

But you must be carefully with te operation time the material had benn exposed into a any enviroment, the superficial preparation and use diferents frecuencies and diameters transducers


Good loock.



    
 
 
S. Gripp
S. Gripp
03:07 Jul-07-1999
Re: Grain size measurement with attenuation or scattering of ultrasonic waves



    
 
 
Mingxu SU
Mingxu SU
04:13 Dec-06-1999
Re: Grain size measurement with attenuation or scattering of ultrasonic waves
: May be somebody knows good references concerning measurement of grain size using attenuation or scattering of ultrasonic waves.

: I would be grateful for any comment.

: Wieslaw Bicz

: optel@optel.com.pl




    
 
 
alessandro brandini
alessandro brandini
07:42 Sep-05-2002
Re: Grain size measurement with attenuation or scattering of ultrasonic waves
: : May be somebody knows good references concerning measurement of grain size using attenuation or scattering of ultrasonic waves.

: : I would be grateful for any comment.
alessandrobrandini@tiscali.it




    
 
 
Anish Kumar
R & D, Scientist
Indira Gandhi Centre for Atomic Research, India, Joined Mar 2000, 7

Anish Kumar

R & D, Scientist
Indira Gandhi Centre for Atomic Research,
India,
Joined Mar 2000
7
06:26 Sep-06-2002
Re: Grain size measurement with attenuation or scattering of ultrasonic waves
There are many good papers dealing with influence of grain size on ultrasonic attenuation/ scattering. Following are a few recent papers in this direction and many more references are given in these papers;

(1)Anish Kumar, T.Jayakumar, P.Palanichamy and Baldev Raj “Influence of Grain Size on Ultrasonic Spectral Parameters in AISI Type 316 Stainless Steel”, Scripta Materialia, 40(3) (1999) 333-340.

(2) Anish Kumar, T.Jayakumar and Baldev Raj “Ultrasonic Spectral Analysis for Microstructural Characterization in Austenitic and Ferritic Steels” Philosophical Magazine A, 80 (11) (2000) 2469-2487.

(3)Anish Kumar, K.Laha, T.Jayakumar, K.B.S.Rao and Baldev Raj “Comprehensive Microstructural Characterization in Modified 9Cr-1Mo ferritic steel by Ultrasonics”, Metallurgical and Materials Transactions A, 33 A, (2002) 1617-1627.

(4)R. Klinman, G. R. Webster, F. J. Marsh and E. T. Stephenson, Materials Evaluation, p. 26-32 (Oct. 1980).


: : : May be somebody knows good references concerning measurement of grain size using attenuation or scattering of ultrasonic waves.
.
: : : I would be grateful for any comment.
: alessandrobrandini@tiscali.it
.



    
 
 

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