Effect of Acoustic Field in Lens on Ultrasonic Microscopy
Ultrasonic microscopy is highly regarded as a method for measuring the properties of materials by detecting the velocity of leaky surface acoustic waves. This velocity can be detected by measuring the output voltage of the transducer of an ultrasonic microscope as a function of the defocus of the ac...
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| Veröffentlicht in: | TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C 1992/04/25, Vol.58(548), pp.1154-1161 |
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| container_title | TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C |
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| creator | NONAKA, Toshio FUJISHIMA, Kazuo HAYAKAWA, Yasuo |
| description | Ultrasonic microscopy is highly regarded as a method for measuring the properties of materials by detecting the velocity of leaky surface acoustic waves. This velocity can be detected by measuring the output voltage of the transducer of an ultrasonic microscope as a function of the defocus of the acoustic lens [ V(z) curve]. The V(z) curve is obtained by the interference of ultrasonic waves generated by several reflections or refractions in the material. The complicated interference modes cause the misunderstanding of the results measured using an ultrasonic microscope. Therefore, well-analyzed characteristics of the acoustic lens are expected to avoid the misunderstanding. In this report, an optimum lens design method is proposed. Good acoustic characteristics of the lens are obtained by setting the aperture angle to the first zero point of the potential at the back focal plane of the lens. |
| doi_str_mv | 10.1299/kikaic.58.1154 |
| format | Article |
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This velocity can be detected by measuring the output voltage of the transducer of an ultrasonic microscope as a function of the defocus of the acoustic lens [ V(z) curve]. The V(z) curve is obtained by the interference of ultrasonic waves generated by several reflections or refractions in the material. The complicated interference modes cause the misunderstanding of the results measured using an ultrasonic microscope. Therefore, well-analyzed characteristics of the acoustic lens are expected to avoid the misunderstanding. In this report, an optimum lens design method is proposed. Good acoustic characteristics of the lens are obtained by setting the aperture angle to the first zero point of the potential at the back focal plane of the lens.</description><identifier>ISSN: 0387-5024</identifier><identifier>EISSN: 1884-8354</identifier><identifier>DOI: 10.1299/kikaic.58.1154</identifier><language>eng ; jpn</language><publisher>The Japan Society of Mechanical Engineers</publisher><subject>Affected Layer ; Elastic Wave Acoustic Lens ; Measurement ; Nondestructive Inspection ; Ultrasonic Inspection</subject><ispartof>Transactions of the Japan Society of Mechanical Engineers Series C, 1992/04/25, Vol.58(548), pp.1154-1161</ispartof><rights>The Japan Society of Mechanical Engineers</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,1877,4010,27900,27901,27902</link.rule.ids></links><search><creatorcontrib>NONAKA, Toshio</creatorcontrib><creatorcontrib>FUJISHIMA, Kazuo</creatorcontrib><creatorcontrib>HAYAKAWA, Yasuo</creatorcontrib><title>Effect of Acoustic Field in Lens on Ultrasonic Microscopy</title><title>TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C</title><addtitle>JSMET</addtitle><description>Ultrasonic microscopy is highly regarded as a method for measuring the properties of materials by detecting the velocity of leaky surface acoustic waves. This velocity can be detected by measuring the output voltage of the transducer of an ultrasonic microscope as a function of the defocus of the acoustic lens [ V(z) curve]. The V(z) curve is obtained by the interference of ultrasonic waves generated by several reflections or refractions in the material. The complicated interference modes cause the misunderstanding of the results measured using an ultrasonic microscope. Therefore, well-analyzed characteristics of the acoustic lens are expected to avoid the misunderstanding. In this report, an optimum lens design method is proposed. 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| ispartof | Transactions of the Japan Society of Mechanical Engineers Series C, 1992/04/25, Vol.58(548), pp.1154-1161 |
| issn | 0387-5024 1884-8354 |
| language | eng ; jpn |
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| source | J-STAGE Free; EZB-FREE-00999 freely available EZB journals |
| subjects | Affected Layer Elastic Wave Acoustic Lens Measurement Nondestructive Inspection Ultrasonic Inspection |
| title | Effect of Acoustic Field in Lens on Ultrasonic Microscopy |
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