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TOFEL, P. TRČKA, T. HOLCMAN, V.
Original Title
Fracture Detection by Electro-Ultrasonic Spectroscopy
Type
conference paper
Language
English
Original Abstract
This paper describes the possibility to verify the electro-ultrasonic spectroscopy method validity. This new approach is based on the combined usage of two modern nondestructive testing methods, the electro-ultrasonic spectroscopy and the diagnostics of mechanically stressed solid dielectric materials by the electromagnetic (EME) and acoustic (AE) emission signals. The granite sample was measured by the electro-ultrasonic spectroscopy. Then mechanical load (provided by hydraulic press) was applied on this sample. Generally, an application of mechanical stress leads to micro-cracks formation in stressed solid dielectric materials. Cracks generation is accompanied by generation of the electromagnetic (EME) and acoustic (AE) emission signals, which can be measured by appropriate sensors. Continual measurement and real-time processing and evaluation of these signals can be used for quantitative sample damage estimation. After mechanical load application the sample measuring was conducted one more time by means of the electro-ultrasonic spectroscopy.
Keywords
Crack, electric signal, ultrasonic signal, intermodulation voltage, resistance change
Authors
TOFEL, P.; TRČKA, T.; HOLCMAN, V.
RIV year
2012
Released
26. 8. 2012
ISBN
978-5-905576-18-8
Book
19th EUROPEAN CONFERENCE ON FRACTURE
Pages from
1
Pages to
8
Pages count
BibTex
@inproceedings{BUT96037, author="Pavel {Tofel} and Tomáš {Trčka} and Vladimír {Holcman}", title="Fracture Detection by Electro-Ultrasonic Spectroscopy", booktitle="19th EUROPEAN CONFERENCE ON FRACTURE", year="2012", pages="1--8", isbn="978-5-905576-18-8" }