Inlämning av Examensarbete / Submission of Thesis

Daniel Carldén; Daniel Thuresson ISRN: HK/R-IMA-EX--1998/D-03--SE, pp. 31. Dept. of Mechanical Engineering, 1998.

The work

Författare / Author: Daniel Carldén, Daniel Thuresson
Titel / Title: Crack Detection using Non-linear and Dissipative Acoustics
Abstrakt Abstract:

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.

Ämnesord / Subject: Maskinteknik - Mechanical Engineering\General

Nyckelord / Keywords: Non-linear acoustics, Non-linear parameter, Burger's equation, Bessel-Fubini, Fay, Mendousse, Hedberg, Non-destructive testing (NDT), Non-destructive Evaluation (NDE), crack detection.

Publication info

Dokument id / Document id:
Program:/ Programme Master programme in Mechanical Engineering
Registreringsdatum / Date of registration: 09/16/2004
Uppsatstyp / Type of thesis: D-Uppsats/Magister/Master

Context

Handledare / Supervisor: Claes Hedberg
Examinator / Examiner: Göran Broman
Organisation / Organisation: Blekinge Institute of Technology
Institution / School: Dept. of Mechanical Engineering

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