M
Masahiko Hirao
Researcher at Osaka University
Publications - 211
Citations - 4744
Masahiko Hirao is an academic researcher from Osaka University. The author has contributed to research in topics: Electromagnetic acoustic transducer & Resonance. The author has an hindex of 35, co-authored 211 publications receiving 4292 citations. Previous affiliations of Masahiko Hirao include Ebara Corporation.
Papers
More filters
Book
EMATs for Science and Industry: Noncontacting Ultrasonic Measurements
Masahiko Hirao,Hirotsugu Ogi +1 more
TL;DR: In this paper, the authors present a survey of EMAT techniques and their applications in the industrial domain, including on-line texture monitoring of steel sheets and in-situ monitoring of Dislocation Mobility.
Journal ArticleDOI
An SH-wave EMAT technique for gas pipeline inspection
Masahiko Hirao,Hirotsugu Ogi +1 more
TL;DR: In this paper, a periodic-permanent-magnet (PPM) EMAT is placed inside the pipe, which generates and receives the SH guided waves traveling in the circumferential direction with the axial polarization.
Journal ArticleDOI
Complete mode identification for resonance ultrasound spectroscopy.
TL;DR: This study adopts a laser-Doppler interferometer to measure the displacement-distribution patterns on a surface of the vibrating specimen mounted on pinducers and comparison of the measured displacement distributions with those computed permits us to correctly identify the measured resonance frequencies, leading to unmistakable determination of elastic constants.
Journal ArticleDOI
Contactless mode-selective resonance ultrasound spectroscopy: Electromagnetic acoustic resonance
TL;DR: In this article, a noncontacting resonant-ultrasound-spectroscopy (RUS) method for measuring elastic constants and internal friction of conducting materials is described, and applied to monocrystalline copper.