Opposite phased transducer — novel type of transducer

Jorma Pitkänen, V. Kniazev, Pentti Kauppinen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

Defect sizing is an important task giving input to fracture mechanics evaluation. The exact evaluation of sound field is the key factor to analyse precisely defects in materials. Sizing accuracy is affected by the size of the sound field. There are several methods available for sizing: SAFT, Acoustic Holography, Tip diffraction, Amplitude drop. In SAFT and acoustic holography applications the sound field is calculated according to the back propagation of sound waves from an object (defect, flaw). The echoes are calculated according to their origin. In tip diffraction technique the external sides of defect are determined based on direct echoes coming from the crack tips. Amplitude drop technique is affected by the sound field size to defect size ratio. Opposite phased transducer is based on sound field determination in design phase. The sound field is calculated using an ultrasonic modelling software and the sound field is very narrow also for a long sound path distance. This feature is used when sizing by using opposite phased transducer.
Original languageEnglish
Title of host publicationQuantitative Nondestructive Evaluation
Place of PublicationMelville, New York
PublisherAmerican Institute of Physics AIP
Pages721-728
ISBN (Print)0-7354-0173-X
DOIs
Publication statusPublished - 2004
MoE publication typeNot Eligible
EventReview of Progress in Quantitative Nondestructive Evaluation Conference, QNDE - Green Bay, United States
Duration: 27 Jul 20031 Aug 2003

Publication series

SeriesAIP Conference Proceedings
Volume700
ISSN0094-243X

Conference

ConferenceReview of Progress in Quantitative Nondestructive Evaluation Conference, QNDE
CountryUnited States
CityGreen Bay
Period27/07/031/08/03

Fingerprint

sound fields
transducers
sizing
defects
holography
acoustics
echoes
fracture mechanics
evaluation
crack tips
sound waves
diffraction
ultrasonics
computer programs

Cite this

Pitkänen, J., Kniazev, V., & Kauppinen, P. (2004). Opposite phased transducer — novel type of transducer. In Quantitative Nondestructive Evaluation (pp. 721-728). Melville, New York: American Institute of Physics AIP. AIP Conference Proceedings, Vol.. 700 https://doi.org/10.1063/1.1711692
Pitkänen, Jorma ; Kniazev, V. ; Kauppinen, Pentti. / Opposite phased transducer — novel type of transducer. Quantitative Nondestructive Evaluation. Melville, New York : American Institute of Physics AIP, 2004. pp. 721-728 (AIP Conference Proceedings, Vol. 700).
@inproceedings{507bf3d4ed3345fdae7b1b880350e47d,
title = "Opposite phased transducer — novel type of transducer",
abstract = "Defect sizing is an important task giving input to fracture mechanics evaluation. The exact evaluation of sound field is the key factor to analyse precisely defects in materials. Sizing accuracy is affected by the size of the sound field. There are several methods available for sizing: SAFT, Acoustic Holography, Tip diffraction, Amplitude drop. In SAFT and acoustic holography applications the sound field is calculated according to the back propagation of sound waves from an object (defect, flaw). The echoes are calculated according to their origin. In tip diffraction technique the external sides of defect are determined based on direct echoes coming from the crack tips. Amplitude drop technique is affected by the sound field size to defect size ratio. Opposite phased transducer is based on sound field determination in design phase. The sound field is calculated using an ultrasonic modelling software and the sound field is very narrow also for a long sound path distance. This feature is used when sizing by using opposite phased transducer.",
author = "Jorma Pitk{\"a}nen and V. Kniazev and Pentti Kauppinen",
year = "2004",
doi = "10.1063/1.1711692",
language = "English",
isbn = "0-7354-0173-X",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics AIP",
pages = "721--728",
booktitle = "Quantitative Nondestructive Evaluation",
address = "United States",

}

Pitkänen, J, Kniazev, V & Kauppinen, P 2004, Opposite phased transducer — novel type of transducer. in Quantitative Nondestructive Evaluation. American Institute of Physics AIP, Melville, New York, AIP Conference Proceedings, vol. 700, pp. 721-728, Review of Progress in Quantitative Nondestructive Evaluation Conference, QNDE, Green Bay, United States, 27/07/03. https://doi.org/10.1063/1.1711692

Opposite phased transducer — novel type of transducer. / Pitkänen, Jorma; Kniazev, V.; Kauppinen, Pentti.

Quantitative Nondestructive Evaluation. Melville, New York : American Institute of Physics AIP, 2004. p. 721-728 (AIP Conference Proceedings, Vol. 700).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

TY - GEN

T1 - Opposite phased transducer — novel type of transducer

AU - Pitkänen, Jorma

AU - Kniazev, V.

AU - Kauppinen, Pentti

PY - 2004

Y1 - 2004

N2 - Defect sizing is an important task giving input to fracture mechanics evaluation. The exact evaluation of sound field is the key factor to analyse precisely defects in materials. Sizing accuracy is affected by the size of the sound field. There are several methods available for sizing: SAFT, Acoustic Holography, Tip diffraction, Amplitude drop. In SAFT and acoustic holography applications the sound field is calculated according to the back propagation of sound waves from an object (defect, flaw). The echoes are calculated according to their origin. In tip diffraction technique the external sides of defect are determined based on direct echoes coming from the crack tips. Amplitude drop technique is affected by the sound field size to defect size ratio. Opposite phased transducer is based on sound field determination in design phase. The sound field is calculated using an ultrasonic modelling software and the sound field is very narrow also for a long sound path distance. This feature is used when sizing by using opposite phased transducer.

AB - Defect sizing is an important task giving input to fracture mechanics evaluation. The exact evaluation of sound field is the key factor to analyse precisely defects in materials. Sizing accuracy is affected by the size of the sound field. There are several methods available for sizing: SAFT, Acoustic Holography, Tip diffraction, Amplitude drop. In SAFT and acoustic holography applications the sound field is calculated according to the back propagation of sound waves from an object (defect, flaw). The echoes are calculated according to their origin. In tip diffraction technique the external sides of defect are determined based on direct echoes coming from the crack tips. Amplitude drop technique is affected by the sound field size to defect size ratio. Opposite phased transducer is based on sound field determination in design phase. The sound field is calculated using an ultrasonic modelling software and the sound field is very narrow also for a long sound path distance. This feature is used when sizing by using opposite phased transducer.

U2 - 10.1063/1.1711692

DO - 10.1063/1.1711692

M3 - Conference article in proceedings

SN - 0-7354-0173-X

T3 - AIP Conference Proceedings

SP - 721

EP - 728

BT - Quantitative Nondestructive Evaluation

PB - American Institute of Physics AIP

CY - Melville, New York

ER -

Pitkänen J, Kniazev V, Kauppinen P. Opposite phased transducer — novel type of transducer. In Quantitative Nondestructive Evaluation. Melville, New York: American Institute of Physics AIP. 2004. p. 721-728. (AIP Conference Proceedings, Vol. 700). https://doi.org/10.1063/1.1711692