JPS5621059A - Method and device for determining position in ae measurement - Google Patents

Method and device for determining position in ae measurement

Info

Publication number
JPS5621059A
JPS5621059A JP9751879A JP9751879A JPS5621059A JP S5621059 A JPS5621059 A JP S5621059A JP 9751879 A JP9751879 A JP 9751879A JP 9751879 A JP9751879 A JP 9751879A JP S5621059 A JPS5621059 A JP S5621059A
Authority
JP
Japan
Prior art keywords
waves
order
wave arrival
orders
circuit
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.)
Granted
Application number
JP9751879A
Other languages
Japanese (ja)
Other versions
JPS6112546B2 (en
Inventor
Takashi Omae
Minoru Yashima
Satoshi Suzuki
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP9751879A priority Critical patent/JPS5621059A/en
Publication of JPS5621059A publication Critical patent/JPS5621059A/en
Publication of JPS6112546B2 publication Critical patent/JPS6112546B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE: To prevent position determination errors by using amplitude attenuation based on the propagation distance of AE waves to compare the order of AE wave arrival with the order of AE signal amplitude and judging the existence of the mixture of AE waves.
CONSTITUTION: AE signals 11 are inputted to an AE signal amplitude comparing circuit 4 and an AE wave arrival time difference measuring circuit 5. The comparing circuit 4 orders the AE signals in a sensor from the largest amplitude one to the smallest one one after the other. The measuring circuit 5 records the order of AE wave arrival to each sensor. A comparing circuit 6 judges that AE waves have mixed if the orders of information 12 that indicates the order of AE signal amplitude values and information 13 that indicates the order of AE wave arrival do not coincide with each other and judges that the AE waves have not mixed if the orders of the two coincide with each other. Only when the AE waves are judged not to have mixed, a position determination circuit 7 carries out position determination and a recorder 8 records the result.
COPYRIGHT: (C)1981,JPO&Japio
JP9751879A 1979-07-31 1979-07-31 Method and device for determining position in ae measurement Granted JPS5621059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9751879A JPS5621059A (en) 1979-07-31 1979-07-31 Method and device for determining position in ae measurement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9751879A JPS5621059A (en) 1979-07-31 1979-07-31 Method and device for determining position in ae measurement

Publications (2)

Publication Number Publication Date
JPS5621059A true JPS5621059A (en) 1981-02-27
JPS6112546B2 JPS6112546B2 (en) 1986-04-09

Family

ID=14194469

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9751879A Granted JPS5621059A (en) 1979-07-31 1979-07-31 Method and device for determining position in ae measurement

Country Status (1)

Country Link
JP (1) JPS5621059A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003066016A (en) * 2001-08-23 2003-03-05 Toshiba Corp Measuring method for depth of defect in structure
JP2011515188A (en) * 2008-03-26 2011-05-19 バイオクアンテティクス・インコーポレイテッド A method for spectral analysis of ultrasound images to detect breast microcalcifications

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6112545U (en) * 1984-06-26 1986-01-24 ワイケイケイ株式会社 Connection device for horizontal bars and lattice

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003066016A (en) * 2001-08-23 2003-03-05 Toshiba Corp Measuring method for depth of defect in structure
JP2011515188A (en) * 2008-03-26 2011-05-19 バイオクアンテティクス・インコーポレイテッド A method for spectral analysis of ultrasound images to detect breast microcalcifications

Also Published As

Publication number Publication date
JPS6112546B2 (en) 1986-04-09

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