DBPapers
DOI: 10.5593/sgem2011/s03.125

MECHANICAL AND ULTRASOUND PROPERTIES OF CONVEYOR BELT RUBBERS

AUTHOR/S: H. VALENTOVA, B. SKRBEK, M. NEUBERT, P. HANA, J. NEDBAL
Monday 1 August 2011 by Libadmin2011

11th International Multidisciplinary Scientific GeoConference SGEM2011, www.sgem.org, SGEM2011 Conference Proceedings/ ISSN 1314-2704, June 20-25, 2011, Vol. 1, 839-844 pp

ABSTRACT

Knowledge of physical, mainly mechanical, properties of conveyor belt rubbers belongs
to important preconditions of trouble-free operation of conveyor belt transportation.
Mechanical nature of rubber materials used in belt transportation have among others an
immediate effect on the friction between rubber layers of a conveyor belt and a driving
drum and/or on the total power consumption. This knowledge is relevant not only in the
case of new belts where it helps their optimal selection with respect to the nature and
quantity of transported material but also during monitoring the belt changes caused by
operation.

Measurements of rubber mechanical properties are mainly performed in dynamical
regime, e.g. a sinusoidal stress is applied to the material under test and the properties of
materials are expressed by complex shear (G*) or Young’s (E*) modulus. Mechanical
properties of rubbers at higher frequencies are more often characterized by ultrasound
impedance measurements.

Motivation of this contribution stems from the potential utility of ultrasound as a nondestructive
in situ technique to evaluate and to monitor mechanical properties of
materials composing industrial equipment including conveyor belts. Profound
laboratory comparison of both techniques results must precede the industrial employment.

Keywords: Conveyor belt, mechanical properties, ultrasonic properties