Vol.6, No1-2, 2006, pp. 31-40
 UDC 620.179.17

ACOUSTIC EMISSION – AN ACTIVE NON-DESTRUCTIVE TESTING METHOD

Zijah Burzić 1

Stojan Sedmak 2

1 Vojnotehnički institut, Ratka Resanovića 1, Belgrade

2 DIVK, Bulevar vojvode Mišića 43, Belgrade

Abstract

Application of acoustic emission in testing materials and structures enables early detection of defects that develop in service that may cause considerable decrease in reliability and operational safety, including loss in structural integrity. Acoustic emission belongs to the active group of testing methods whereas the acoustic emitting signal is generated during processes of deformation, defect initiation and propagation. Typical examples of applied acoustic emission in monitoring the pressure vessel state and in testing pre-cracked composite specimens are given.

Keywords: acoustic emission, deformation process, sensor, testing of materials

full article (817 kB)