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Dive into the research topics where Tomio Nakajima is active.

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Featured researches published by Tomio Nakajima.


Optics Letters | 2009

Acoustic emission measurement using a strain-insensitive fiber Bragg grating sensor under varying load conditions

Hiroshi Tsuda; Eiichi Sato; Tomio Nakajima; Hideyuki Nakamura; Takahiro Arakawa; Hideyuki Shiono; Masashi Minato; Hideyuki Kurabayashi; Akiyoshi Sato

Acoustic emission (AE) during a pressure test of a carbon fiber-reinforced plastic tank was measured using a fiber Bragg grating (FBG) sensor and, for comparison, using a conventional piezoelectric sensor. The FBG-inscribed optical fiber was used not only as an optical transmission line but also as an ultrasonic transmission line. The FBG sensor showed resonant characteristics and could detect AE continuously during the test. AE detected with the FBG sensor exhibited a cumulative behavior similar to that detected with the piezoelectric sensor. The FBG sensor was demonstrated to have comparable AE detection capability to piezoelectric sensors.


Archive | 2007

Ultrasonic probe for high temperature and its manufacturing method

Takahiro Arakawa; Yoshimichi Atsuta; Tomio Nakajima; Katsumi Saito; Masaki Shimizu; Nobuto Takizawa; 富男 中島; 勝美 斉藤; 昌己 清水; 宣人 滝沢; 美道 熱田; 敬弘 荒川


Archive | 2010

AE MEASURING METHOD AND EQUIPMENT BY OPTICAL FIBER SENSOR USING WIDE BAND LIGHT

Takahiro Arakawa; Masashi Nakadai; Tomio Nakajima; Akira Sato; Hidekazu Sato; Hiroshi Tsuda; 雅士 中代; 富男 中島; 明 佐藤; 英一 佐藤; 浩 津田; 敬弘 荒川


Transactions of the Japan Society of Mechanical Engineers. A | 2013

Self-Temperature Compensating Strain Measurement Technique Using an FBG Sensor under Cyclic Loaded Cases

Tomio Nakajima


Journal of Solid Mechanics and Materials Engineering | 2013

Development of Simultaneous Measurement System for Strain and AE Using FBG Sensors for Structural Health Monitoring of Solid Rocket Motor Composite Chamber

Tomio Nakajima; Eiich Sato; Hiroshi Tsuda; Akiyoshi Sato; Nobuaki Kawai


Transactions of the Japan Society of Mechanical Engineers. A | 2013

Vibration Measurement of a Mechanical Element in Liquid Hydrogen Using an FBG Sensor

Tomio Nakajima; Satoshi Takada; Eiichi Sato; Hiroshi Tsuda; Akiyoshi Sato


Archive | 2013

Ae test device and method of composite material tank

Hiroshi Kawasaki; 中村 英之; Hideyuki Nakamura; 英之 中村; 真実 滝沢; Mami Takizawa; 富男 中島; Tomio Nakajima; Kojiro Nakagawa; 順二 岡崎; Junji Okazaki


Transactions of the Japan Society of Mechanical Engineers. A | 2012

Development of simultaneous measurement system for strain and AE using FBG sensors (for structural health monitoring of solid rocket motor composite chambers)

Tomio Nakajima; Eiichi Sato; Hiroshi Tsuda; Akiyoshi Sato; Nobuaki Kawai


Archive | 2011

Measurement method and measurement device using fbg sensor

Tomio Nakajima; 富男 中島; Hidekazu Sato; 英一 佐藤; Hiroshi Tsuda; 浩 津田; Akira Sato; 明 佐藤


Archive | 2010

METHOD AND DEVICE FOR ULTRASONIC INSPECTION OF CARBONACEOUS MATERIAL

Kazushi Akagi; Takahiro Arakawa; Yoshimichi Atsuta; Hiroaki Hatanaka; Motoki Honda; Tomio Nakajima; Norio Nitta; Katsumi Saito; 富男 中島; 法生 新田; 基樹 本田; 美道 熱田; 宏明 畠中; 敬弘 荒川; 一志 赤木; 勝美 齋藤

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Hiroshi Tsuda

Osaka Prefecture University

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Akiyoshi Sato

National Institute of Advanced Industrial Science and Technology

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Eiichi Sato

Japan Aerospace Exploration Agency

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Nobuaki Kawai

Japan Aerospace Exploration Agency

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Eiich Sato

Japan Aerospace Exploration Agency

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