Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

A fracture mechanic interpretation model for acoustic emission signals caused by thermal fatigue shocking on a reactor pressure vessel nozzle

 

Proceedings of the 3rd German-Japanese Joint Seminar
1985
S.12
Deutsch-Japanisches-Seminar <3, 1985, Stuttgart>
Englisch
Konferenzbeitrag
Fraunhofer IZFP ()
acoustic emission; crack face friction; crack propagation; fracture mechanic; thermoshock

Abstract
The analysis of acoustic emission measurements during cyclic thermo-shock tests on a pressure vessel nozzle (HDR) with cracks, indicated a time-dependent emission of signals that partially contradicts the usual fracture mechanic approach (according to Paris). If one assumes a time-dependent corrosion crack growth (normally of secondary importance) as the dominating factor of influence, a qualitatively good agreement between acoustic emission and fracture mechanic is achieved.

: http://publica.fraunhofer.de/dokumente/PX-15186.html