JPS5644843A - Measuring device of acoustic emission - Google Patents

Measuring device of acoustic emission

Info

Publication number
JPS5644843A
JPS5644843A JP12089079A JP12089079A JPS5644843A JP S5644843 A JPS5644843 A JP S5644843A JP 12089079 A JP12089079 A JP 12089079A JP 12089079 A JP12089079 A JP 12089079A JP S5644843 A JPS5644843 A JP S5644843A
Authority
JP
Japan
Prior art keywords
signal
light
optical fiber
main amplifier
preamplifier
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12089079A
Other languages
English (en)
Inventor
Shigeki Sakaguchi
Takao Kimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP12089079A priority Critical patent/JPS5644843A/ja
Publication of JPS5644843A publication Critical patent/JPS5644843A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
JP12089079A 1979-09-21 1979-09-21 Measuring device of acoustic emission Pending JPS5644843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12089079A JPS5644843A (en) 1979-09-21 1979-09-21 Measuring device of acoustic emission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12089079A JPS5644843A (en) 1979-09-21 1979-09-21 Measuring device of acoustic emission

Publications (1)

Publication Number Publication Date
JPS5644843A true JPS5644843A (en) 1981-04-24

Family

ID=14797508

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12089079A Pending JPS5644843A (en) 1979-09-21 1979-09-21 Measuring device of acoustic emission

Country Status (1)

Country Link
JP (1) JPS5644843A (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59194062U (ja) * 1983-06-08 1984-12-24 三菱重工業株式会社 超音波探傷信号時分割多重伝送装置
JPS61103615A (ja) * 1984-10-24 1986-05-22 Kobe Steel Ltd 被搬送物の積載ピツチ縮小方法並びにその縮小装置
JPS62111658U (ja) * 1985-12-28 1987-07-16
JPH0439210A (ja) * 1990-06-01 1992-02-10 Tanaka Kinokoen:Kk 荷物整列方法
JPH0495941U (ja) * 1990-05-31 1992-08-19
KR100338529B1 (ko) * 1999-09-22 2002-05-27 김영진 광섬유 외팔보의 공진을 이용한 음향방출 센서

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59194062U (ja) * 1983-06-08 1984-12-24 三菱重工業株式会社 超音波探傷信号時分割多重伝送装置
JPS61103615A (ja) * 1984-10-24 1986-05-22 Kobe Steel Ltd 被搬送物の積載ピツチ縮小方法並びにその縮小装置
JPS62111658U (ja) * 1985-12-28 1987-07-16
JPH0495941U (ja) * 1990-05-31 1992-08-19
JPH0439210A (ja) * 1990-06-01 1992-02-10 Tanaka Kinokoen:Kk 荷物整列方法
KR100338529B1 (ko) * 1999-09-22 2002-05-27 김영진 광섬유 외팔보의 공진을 이용한 음향방출 센서

Similar Documents

Publication Publication Date Title
JPS56165437A (en) Optical repeating system for optical communication
TW270265B (ja)
TW350171B (en) Amplification circuit and the apparatus
JPS5644843A (en) Measuring device of acoustic emission
ES8305988A1 (es) "un receptor optico".
JPS52122038A (en) Fixed noise elimination of solid image sensor
DE68901727D1 (de) Optischer leistungsmesser.
SE8402056L (sv) Anordning for att utoka dynamikomradet i en integrerande optoelektrisk mottagare
JPS53142154A (en) Optical signal receiving circuit
JPS5735457A (en) Loudspeaker telephone set system
JPS5737998A (en) Microphone device
ATE167601T1 (de) Hybrid-analog-digital-signalverarbeitung
JPS5533659A (en) Troubled point locator of power cable
JPS5692513A (en) Light amplifier
JPS54149523A (en) Information reader
JPS57207445A (en) Environmental noise compensating system for optical receiver
JPS5623047A (en) Optical transmitter
JPS5613850A (en) Secondary signal piling transmission system
JPS54100206A (en) Radio digital signal receiving system
JPS52101A (en) System for transmitting acoustic sigal
JPS5665541A (en) Automatic equalizing system
JPS52153139A (en) Interior power line carrier system
EP0600091A4 (en) RECEIVER FOR DIGITAL SIGNALS.
JPS5667763A (en) Voltage detecting circuit for electric power converter
JPS5725770A (en) Analog-to-digital converting circuit of solid state scanner