JPS5578207A - Ultrasonic thickness meter - Google Patents

Ultrasonic thickness meter

Info

Publication number
JPS5578207A
JPS5578207A JP15098878A JP15098878A JPS5578207A JP S5578207 A JPS5578207 A JP S5578207A JP 15098878 A JP15098878 A JP 15098878A JP 15098878 A JP15098878 A JP 15098878A JP S5578207 A JPS5578207 A JP S5578207A
Authority
JP
Japan
Prior art keywords
circuit
detect
failure
converter
pulse width
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
JP15098878A
Other languages
Japanese (ja)
Other versions
JPS62441B2 (en
Inventor
Kazuyuki Ito
Yoshitaka Yoshiyama
Toshiyuki Matsumi
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 Steel Corp
Tokyo Keiki Inc
Original Assignee
Tokyo Keiki Co Ltd
Nippon Steel 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 Tokyo Keiki Co Ltd, Nippon Steel Corp filed Critical Tokyo Keiki Co Ltd
Priority to JP15098878A priority Critical patent/JPS5578207A/en
Publication of JPS5578207A publication Critical patent/JPS5578207A/en
Publication of JPS62441B2 publication Critical patent/JPS62441B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE: To increase the resolution between reception echoes, by detecting abnormal phenomena depending on the failure present under the surface of measured object individually to detect the presence of failures within fine distance under the surface.
CONSTITUTION: The reflection echo of ultrasonic pulses reciprocating the front and rear surface of measured object 10 is picked up with the probe 14, the circuit 18 forms analog signal corresponding to the thickness from the time required for reciprocation of pulses and the signal is fed to the A/D converter 20 and the surface reflection wave detection circuit 26. Further, abnormal thickness is detected with the converter 20 and comparison circuit 22 to detect the presence of failure, and the greater pulse width than the specified value for the surface reflection echo can be detected with the circit 26, pulse width comparison circuit 28, and memory circuit 30. Each detection output operates the alarm circuit 34 via the OR circuit 32 to detect and display the failure 12 beneath the surface.
COPYRIGHT: (C)1980,JPO&Japio
JP15098878A 1978-12-08 1978-12-08 Ultrasonic thickness meter Granted JPS5578207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15098878A JPS5578207A (en) 1978-12-08 1978-12-08 Ultrasonic thickness meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15098878A JPS5578207A (en) 1978-12-08 1978-12-08 Ultrasonic thickness meter

Publications (2)

Publication Number Publication Date
JPS5578207A true JPS5578207A (en) 1980-06-12
JPS62441B2 JPS62441B2 (en) 1987-01-08

Family

ID=15508821

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15098878A Granted JPS5578207A (en) 1978-12-08 1978-12-08 Ultrasonic thickness meter

Country Status (1)

Country Link
JP (1) JPS5578207A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6433655U (en) * 1987-08-17 1989-03-02

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10744658B2 (en) 2014-03-04 2020-08-18 Ge-Hitachi Nuclear Energy Americas Llc Nuclear reactor light-based fuel alignment systems and methods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6433655U (en) * 1987-08-17 1989-03-02

Also Published As

Publication number Publication date
JPS62441B2 (en) 1987-01-08

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