Measurement of granule strength in particle beds using ultrasonic velocity

Author

Coghill, P.J. ; Bruniges, R. ; Giang, P.

Author_Institution

CSIRO Miner., Menai, NSW, Australia

fYear

2009

fDate

20-23 Sept. 2009

Firstpage

1981

Lastpage

1984

Abstract

It is proposed in this work that the mean "strength" of the individual particles or pellets can be determined ultrasonically by measuring the longitudinal or shear sound speed of a sample of powder or pellets placed under pressure and calculating from this the average sound speed of the particles themselves. These measurements then can be compared to the standard "strength" measurements in use to determine whether in those particular cases the sound speed measurement is a feasible alternative. The sound measurement, if demonstrated to be feasible, may well have extensive practical advantages over the old techniques in terms of repeatability, ease of use and having a direct relationship with a well known physical parameter.

Keywords

elastic waves; granular materials; mechanical strength; ultrasonic measurement; ultrasonic velocity; average sound speed; granule strength measurement; longitudinal sound speed; particle beds; pellet sample; powder sample; shear sound speed; ultrasonic velocity; Acoustic materials; Acoustic transducers; Crystals; Equations; Particle measurements; Powders; Pressure measurement; Ultrasonic transducers; Ultrasonic variables measurement; Velocity measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2009 IEEE International

Conference_Location

Rome

ISSN

1948-5719

Print_ISBN

978-1-4244-4389-5

Electronic_ISBN

1948-5719

Type

conf

DOI

10.1109/ULTSYM.2009.5442076

Filename

5442076