Archives of Acoustics, 18, 3, pp. 371-415, 1993
Methods and applications of acoustics emission. Comparative analysis
Acoustic signals which accompany internal changes of the structure of a continuous medium have been observed for centuries, and where often utilized as warning signals of oncoming catastrophes. These signals provoked also an interest as indicators of homogeneity and strength of material. First scientific concern for this kind of acoustic phenomena dates from the third decade of the twentieth century , and refers to "micro-seismic" signals. ...
Full Text: PDF
Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN)