Calibration-free portable Young's-modulus tester with isolated langasite oscillator

Ogi, Hirotsugu; Sakamoto, Yuto; Hirao, Masahiko

Ultrasonics, 2014, 54(7), 1963-1966

Number of Access:365（2025-11-25 02:19 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/84199

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Title
Calibration-free portable Young's-modulus tester with isolated langasite oscillator
Creator
NRID
1000090252626 1000090252626
researchmap permalink
read0042771 read0042771
Scopus Author ID
35563683500 35563683500
ORCID
0000-0002-9602-5194 0000-0002-9602-5194
CreatorName
Ogi, Hirotsugu
CreatorName
Sakamoto, Yuto
NRID
1000080112027 1000080112027
CreatorName
Hirao, Masahiko
Subject
Electrodeless oscillator
Ultrasonic resonator
Young's modulus
Abstract
A ballpoint-pen-type portable ultrasonic oscillator is developed for quantitative measurement of Young's modulus on a solid. It consists of an electrodeless rod-shaped langasite oscillator with a tungsten-carbide spherical-shaped tip at the end, permanent magnets for making a constant force at the contact interface, and antennas for exciting and detecting the longitudinal vibration contactlessly. The resonance frequency of the oscillator is changed by contact with the specimen, reflecting Young's modulus of the specimen at the contact area. The langasite oscillator is supported at the nodal points so that its acoustical contact occurs only at the specimen, making a calibration-free measurement realistic. Young's moduli of various specimens were evaluated within 15% error just by touching the specimens with the probe. The error becomes smaller than 10% for lower Young-modulus materials (<∼150 GPa). © 2014 Elsevier B.V. All rights reserved.
Publisher
Elsevier B.V.
Source Title
Ultrasonics
Volume (Issue)
54(7)
Page
1963-1966
Date of Issued
2014-05-15
Language
English
Handle URL
https://hdl.handle.net/11094/84199
PISSN
0041624X
NCID
AA11541030
AA00876332
Relation.isVersionOf
DOI (Publisher Version)
https://doi.org/10.1016/j.ultras.2014.05.002
Access Rights
open access
CopyRight
© 2014 Elsevier B.V. This manuscript version is made available under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
oaire:version
Accepted Manuscript
Category
学術雑誌論文 Journal Article