Feasibility study on characterization of non-Gaussian rough surface by ultrasonic reflection method with the Kirchhoff theory

The fundamental study on the ultrasonic characterization of non-Gaussian rough surface of a material is carried out. In this study, a theoretical relationship among ultrasonic reflection coefficient at normal incidence, root mean square roughness Rq, and skewness Rsk (which is the measure of symmetr...

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Autores principales:	Muhammad Nur Farhan SANIMAN, Ikuo IHARA
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	air-coupled ultrasound roughness skewness non-gaussian surfaces johnson distribution Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/b79dd1ba555040f4a6c30ff1dbb8ff64
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spelling	oai:doaj.org-article:b79dd1ba555040f4a6c30ff1dbb8ff642021-11-26T06:58:32ZFeasibility study on characterization of non-Gaussian rough surface by ultrasonic reflection method with the Kirchhoff theory2187-974510.1299/mej.16-00162https://doaj.org/article/b79dd1ba555040f4a6c30ff1dbb8ff642016-07-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/6/3_16-00162/_pdf/-char/enhttps://doaj.org/toc/2187-9745The fundamental study on the ultrasonic characterization of non-Gaussian rough surface of a material is carried out. In this study, a theoretical relationship among ultrasonic reflection coefficient at normal incidence, root mean square roughness Rq, and skewness Rsk (which is the measure of symmetrical level of a height distribution) has been derived. In the derivation, a Gaussian curve fitting to the non-Gaussian height distribution of a rough surface is effectively performed so that the Kirchhoff theory of wave scattering from a rough surface can be utilized. In order to verify the validity of the derived relationship, air-coupled ultrasonic pulse-echo measurements with normal incident configuration at center frequency of 0.35 MHz have been conducted to a series of sandpapers having various Rq and Rsk values. From the measured ultrasonic reflection coefficient of each sandpaper, the Rq values of the sandpapers have been estimated from the derived relationship with known values of skewness of the sandpapers and then compared to those measured by a mechanical stylus profiler. It is found that the Rq values estimated by the ultrasonic method and the stylus profiler almost agree with each other. Thus, the validity of the derived theoretical relationship is demonstrated.Muhammad Nur Farhan SANIMANIkuo IHARAThe Japan Society of Mechanical Engineersarticleair-coupled ultrasoundroughnessskewnessnon-gaussian surfacesjohnson distributionMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 6, Pp 16-00162-16-00162 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	air-coupled ultrasound roughness skewness non-gaussian surfaces johnson distribution Mechanical engineering and machinery TJ1-1570
spellingShingle	air-coupled ultrasound roughness skewness non-gaussian surfaces johnson distribution Mechanical engineering and machinery TJ1-1570 Muhammad Nur Farhan SANIMAN Ikuo IHARA Feasibility study on characterization of non-Gaussian rough surface by ultrasonic reflection method with the Kirchhoff theory
description	The fundamental study on the ultrasonic characterization of non-Gaussian rough surface of a material is carried out. In this study, a theoretical relationship among ultrasonic reflection coefficient at normal incidence, root mean square roughness Rq, and skewness Rsk (which is the measure of symmetrical level of a height distribution) has been derived. In the derivation, a Gaussian curve fitting to the non-Gaussian height distribution of a rough surface is effectively performed so that the Kirchhoff theory of wave scattering from a rough surface can be utilized. In order to verify the validity of the derived relationship, air-coupled ultrasonic pulse-echo measurements with normal incident configuration at center frequency of 0.35 MHz have been conducted to a series of sandpapers having various Rq and Rsk values. From the measured ultrasonic reflection coefficient of each sandpaper, the Rq values of the sandpapers have been estimated from the derived relationship with known values of skewness of the sandpapers and then compared to those measured by a mechanical stylus profiler. It is found that the Rq values estimated by the ultrasonic method and the stylus profiler almost agree with each other. Thus, the validity of the derived theoretical relationship is demonstrated.
format	article
author	Muhammad Nur Farhan SANIMAN Ikuo IHARA
author_facet	Muhammad Nur Farhan SANIMAN Ikuo IHARA
author_sort	Muhammad Nur Farhan SANIMAN
title	Feasibility study on characterization of non-Gaussian rough surface by ultrasonic reflection method with the Kirchhoff theory
title_short	Feasibility study on characterization of non-Gaussian rough surface by ultrasonic reflection method with the Kirchhoff theory
title_full	Feasibility study on characterization of non-Gaussian rough surface by ultrasonic reflection method with the Kirchhoff theory
title_fullStr	Feasibility study on characterization of non-Gaussian rough surface by ultrasonic reflection method with the Kirchhoff theory
title_full_unstemmed	Feasibility study on characterization of non-Gaussian rough surface by ultrasonic reflection method with the Kirchhoff theory
title_sort	feasibility study on characterization of non-gaussian rough surface by ultrasonic reflection method with the kirchhoff theory
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/b79dd1ba555040f4a6c30ff1dbb8ff64
work_keys_str_mv	AT muhammadnurfarhansaniman feasibilitystudyoncharacterizationofnongaussianroughsurfacebyultrasonicreflectionmethodwiththekirchhofftheory AT ikuoihara feasibilitystudyoncharacterizationofnongaussianroughsurfacebyultrasonicreflectionmethodwiththekirchhofftheory
_version_	1718409741057654784

Feasibility study on characterization of non-Gaussian rough surface by ultrasonic reflection method with the Kirchhoff theory

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