Publication result detail

Transfer Characteristic Of An Ultrasonic Transducer

CARBOL, L.; KUSÁK, I.; MARTINEK, J.

Original Title

Transfer Characteristic Of An Ultrasonic Transducer

English Title

Transfer Characteristic Of An Ultrasonic Transducer

Type

Paper in proceedings (conference paper)

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.

English 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

Key words in English

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

2016

Released

03.11.2015

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

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"
}