No/VOL: 10/2008 Page no. 252-255
Authors: Przemysław Ranachowski , Feliks Rejmund , Andrzej Pawełek , Andrzej Piątkowski :
Title: Mechaniczno-akustyczne badania degradacji struktury ceramicznej na przykładzie tworzywa korundowego
Abstract: The paper presents the results of microscopic, ultrasonic and acoustic emission (AE) investigations of corundum ceramic material C 799 kind samples, exposed to compressive stress. On the basis of AE measurements of slowly compressed samples, the successive stages of structural degradation have been recognized. Investigations revealed that differences registered for the strength and the mechanical-acoustic characteristics are due to the inhomogeneity of the material in the semi-macro as well as in the micro scale.
Key words: tworzywo korundowe, emisja akustyczna (EA), wytrzymałość na ściskanie, degradacja struktury