Three Nonlinear NDE Techniques On Three Diverse Objects

Document type: Conference Papers
Peer reviewed: Yes
Full text:
Author(s): Kristian Haller, Claes Hedberg
Title: Three Nonlinear NDE Techniques On Three Diverse Objects
Translated title: Tre olinjära oförstörandeprovningsmetoder applicerade på tre skiljda objekt
Conference name: 17th International Symposium on Nonlinear Acoustics
Year: 2005
Pagination: 87-90, CD-rom
ISBN: 0-7354-0330-9
Publisher: AIP
City: State College, Pensylvania
ISI number: 000238312600016
Organization: Blekinge Institute of Technology
Department: School of Engineering - Dept. of Mechanical Engineering (Sektionen för teknik – avd. för maskinteknik)
School of Engineering S- 371 79 Karlskrona, School of Engineering S- 371 79 Karlskrona
+46 455 38 50 00
Authors e-mail:
Language: English
Abstract: Non-Destructive Evaluation has been carried out on three different test objects, with three different methods based on exhibits of slow dynamics and nonlinear effects.
The three diverse objects were cast iron, ceramic semi-conductors on circuit boards, and rubber. The three approaches were Higher Harmonics detection (HH), Nonlinear Wave Modulation Spectroscopy (NWMS), and Slow Dynamics (SD). For all of the objects the three approaches were tried. The results showed that for each of the objects, a different method worked the best. The cast iron worked best with nonlinear wave modulation, the ceramic semi-conductors worked well with the higher harmonics detection, while the rubber showed best results with slow dynamics.
Subject: Mechanical Engineering\Structural Dynamics
Keywords: Nondestructive testing, nonlinear acoustics, higher harmonics, nonlinear wave modulation spectroscopy, slow dynamics.