Ultrasonic evaluation of the pitch of periodically rough surfaces from back side

The geometrical features of internal surfaces are important parameters in the field of non-destructive testing such as corrosion inspection or artistic qualities of material surfaces. Although stylus profiling and optical scattering are commonly used for measuring both random and periodically rough...

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Autores principales:	Chanh Nghia NGUYEN, Masaki SUGINO, Yu KUROKAWA, Hirotsugu INOUE
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2017
Materias:	periodicity pulse-echo technique inaccessible surface ultrasonic nde back side Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/1b85b451cb9b490d9ebbb0abea4c824b
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spelling	oai:doaj.org-article:1b85b451cb9b490d9ebbb0abea4c824b2021-11-26T07:11:27ZUltrasonic evaluation of the pitch of periodically rough surfaces from back side2187-974510.1299/mej.17-00278https://doaj.org/article/1b85b451cb9b490d9ebbb0abea4c824b2017-09-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/4/5/4_17-00278/_pdf/-char/enhttps://doaj.org/toc/2187-9745The geometrical features of internal surfaces are important parameters in the field of non-destructive testing such as corrosion inspection or artistic qualities of material surfaces. Although stylus profiling and optical scattering are commonly used for measuring both random and periodically rough surface topography, they are only applicable to accessible surfaces. However, there are many cases in which the surface to be evaluated is inaccessible. For example, integrity monitoring of inner surfaces of pipes is required to ensure proper functions and safeguard quality. Unfortunately, little attention has been paid to the measurement of inaccessible periodic surfaces. Since inaccessible surfaces do not permit contact or optical measurement, application of ultrasonic technique from back side is an appropriate candidate among others. In this paper, an ultrasonic pulse-echo technique is investigated to evaluate the pitch of periodically rough surfaces which is inaccessible or hidden on the back side. The pitch of back surface profile is evaluated based on the diffraction grating theory for oblique incidence of P-wave, SV-wave, and SH-wave. The applicability of the proposed technique was verified by both numerical simulation and experiment. It is found that the angle of incidence should be larger than 45° to enhance the accuracy. SH-wave shows better results compared with SV-wave due to the effect of mode conversion. Moreover, using SH-wave is an effective way for evaluation of the pitch because SH-wave is more sensitive than P-wave with shorter wavelength. On the other hand, P-wave is the best solution to obtain the highest resolution of measurement with higher signal to noise ratio.Chanh Nghia NGUYENMasaki SUGINOYu KUROKAWAHirotsugu INOUEThe Japan Society of Mechanical Engineersarticleperiodicitypulse-echo techniqueinaccessible surfaceultrasonic ndeback sideMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 4, Iss 5, Pp 17-00278-17-00278 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	periodicity pulse-echo technique inaccessible surface ultrasonic nde back side Mechanical engineering and machinery TJ1-1570
spellingShingle	periodicity pulse-echo technique inaccessible surface ultrasonic nde back side Mechanical engineering and machinery TJ1-1570 Chanh Nghia NGUYEN Masaki SUGINO Yu KUROKAWA Hirotsugu INOUE Ultrasonic evaluation of the pitch of periodically rough surfaces from back side
description	The geometrical features of internal surfaces are important parameters in the field of non-destructive testing such as corrosion inspection or artistic qualities of material surfaces. Although stylus profiling and optical scattering are commonly used for measuring both random and periodically rough surface topography, they are only applicable to accessible surfaces. However, there are many cases in which the surface to be evaluated is inaccessible. For example, integrity monitoring of inner surfaces of pipes is required to ensure proper functions and safeguard quality. Unfortunately, little attention has been paid to the measurement of inaccessible periodic surfaces. Since inaccessible surfaces do not permit contact or optical measurement, application of ultrasonic technique from back side is an appropriate candidate among others. In this paper, an ultrasonic pulse-echo technique is investigated to evaluate the pitch of periodically rough surfaces which is inaccessible or hidden on the back side. The pitch of back surface profile is evaluated based on the diffraction grating theory for oblique incidence of P-wave, SV-wave, and SH-wave. The applicability of the proposed technique was verified by both numerical simulation and experiment. It is found that the angle of incidence should be larger than 45° to enhance the accuracy. SH-wave shows better results compared with SV-wave due to the effect of mode conversion. Moreover, using SH-wave is an effective way for evaluation of the pitch because SH-wave is more sensitive than P-wave with shorter wavelength. On the other hand, P-wave is the best solution to obtain the highest resolution of measurement with higher signal to noise ratio.
format	article
author	Chanh Nghia NGUYEN Masaki SUGINO Yu KUROKAWA Hirotsugu INOUE
author_facet	Chanh Nghia NGUYEN Masaki SUGINO Yu KUROKAWA Hirotsugu INOUE
author_sort	Chanh Nghia NGUYEN
title	Ultrasonic evaluation of the pitch of periodically rough surfaces from back side
title_short	Ultrasonic evaluation of the pitch of periodically rough surfaces from back side
title_full	Ultrasonic evaluation of the pitch of periodically rough surfaces from back side
title_fullStr	Ultrasonic evaluation of the pitch of periodically rough surfaces from back side
title_full_unstemmed	Ultrasonic evaluation of the pitch of periodically rough surfaces from back side
title_sort	ultrasonic evaluation of the pitch of periodically rough surfaces from back side
publisher	The Japan Society of Mechanical Engineers
publishDate	2017
url	https://doaj.org/article/1b85b451cb9b490d9ebbb0abea4c824b
work_keys_str_mv	AT chanhnghianguyen ultrasonicevaluationofthepitchofperiodicallyroughsurfacesfrombackside AT masakisugino ultrasonicevaluationofthepitchofperiodicallyroughsurfacesfrombackside AT yukurokawa ultrasonicevaluationofthepitchofperiodicallyroughsurfacesfrombackside AT hirotsuguinoue ultrasonicevaluationofthepitchofperiodicallyroughsurfacesfrombackside
_version_	1718409703849984000

Ultrasonic evaluation of the pitch of periodically rough surfaces from back side

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