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CARBOL, L. KUSÁK, I. MARTINEK, J.
Original Title
Transfer Characteristic Of An Ultrasonic Transducer
Type
conference paper
Language
English
Original Abstract
Pulse-compression techniques are increasingly popular in the field of Nondestructive testing. Transmitting transducers are selected primary to match bandwidth of the test signal. This is easily fulfilled in the case of classical narrowband tone burst signals, but almost impossible to fulfill in the case of broadband test signals, such as Maximum Length Sequence. Physical construction of the transducer limits its usefulness to either low or high frequencies. Frequency response contains the necessary information for selecting the best transducer. Mathematical functions, such as correlation, can be used to recover nonparametric frequency response of a measured sample. In this article is also discussed a parametric approach to estimate a transfer function based on an Output-Error model. Finally an experiment is conducted to recover sample´s frequency response using a transducer with non-ideal characteristic.
Keywords
Maximum Length Sequence, Pulse-compression signal, Transfer Function, Frequency Response, Linear Time-Invariant system, Material characteristics, Ultrasonic Testing
Authors
CARBOL, L.; KUSÁK, I.; MARTINEK, J.
RIV year
2015
Released
3. 11. 2015
Publisher
Vysoké učení technické v Brně se spolupráci s Českou společností pro NDT
Location
Praha
ISBN
978-80-214-5280-0
Book
NDT for Safety / Defektoskopie 2015
Edition number
1
Pages from
9
Pages to
14
Pages count
6
BibTex
@inproceedings{BUT117998, author="Ladislav {Carbol} and Ivo {Kusák} and Jan {Martinek}", title="Transfer Characteristic Of An Ultrasonic Transducer", booktitle="NDT for Safety / Defektoskopie 2015", year="2015", number="1", pages="9--14", publisher="Vysoké učení technické v Brně se spolupráci s Českou společností pro NDT", address="Praha", isbn="978-80-214-5280-0" }