Crack Detection using Non-linear and Dissipative Acoustics
Independent thesis Advanced level (degree of Master (One Year))Student thesis
A theoretical model for identification of acoustical non-linearity using Burger's equation was implemented in a MATLAB program. The program identified both the non-linearity parameter and the distance from the signal source. Tests were performed in order to verify the theories. Tests with a steel bar showed no detectable non-linearity, probably due to insufficient wave amplitude by the signal source. A crack model was made with successful result.
Place, publisher, year, edition, pages
1998. , 31 p.
Non-linear acoustics, Non-linear parameter, Burger's equation, Bessel-Fubini, Fay, Mendousse, Hedberg, Non-destructive testing (NDT), Non-destructive Evaluation (NDE), crack detection.
IdentifiersURN: urn:nbn:se:bth-2592Local ID: oai:bth.se:arkivexC125660F002EA348C12568A3002CABC5OAI: oai:DiVA.org:bth-2592DiVA: diva2:829877