JPS63193060A - Receiving apparatus for ultrasonic flaw detection - Google Patents

Receiving apparatus for ultrasonic flaw detection

Info

Publication number
JPS63193060A
JPS63193060A JP62024817A JP2481787A JPS63193060A JP S63193060 A JPS63193060 A JP S63193060A JP 62024817 A JP62024817 A JP 62024817A JP 2481787 A JP2481787 A JP 2481787A JP S63193060 A JPS63193060 A JP S63193060A
Authority
JP
Japan
Prior art keywords
signal
peak value
circuit
amplified
gain
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
JP62024817A
Other languages
Japanese (ja)
Other versions
JP2507383B2 (en
Inventor
Yuji Ichinose
Fuminobu Takahashi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62024817A priority Critical patent/JP2507383B2/en
Publication of JPS63193060A publication Critical patent/JPS63193060A/en
Application granted granted Critical
Publication of JP2507383B2 publication Critical patent/JP2507383B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To set an ultrasonic signal to the optimum level, by a method wherein the output of the containing the reflected wave of a flaw in a received ultrasonic signal is variably amplified to detect the peak value thereof and the gain of a variable amplifier is determined on the basis of the detected peak value.
CONSTITUTION: The received ultrasonic signal A from a probe is amplified by a preamplifier 1 and a time gate signal is inputted to a time gate circuit 2 and a signal containing the reflected wave of a flaw is separated from other signal to pass only for a specific period. The output signal B of the circuit 2 is amplified by a variable amplifier 3 and the variably amplified output signal C is sent to a signal processing apparatus and a peak detection circuit 4. This circuit 4 detects the first peak value P wherein the peak value of the output signal C exceeds a threshold value. The detected peak value P is inputted to a gain determining circuit 5 and a new gain optimizing the output signal C is calculated from the present gain (order) and the detected peak value P to issue a command to the variable amplifier. Therefore, the adjustment work of an inspector is made unnecessary at the time of ultrasonic flaw detection and the optimum gas is automatically determined to make it possible to enhance flaw detection accuracy.
COPYRIGHT: (C)1988,JPO&Japio
JP62024817A 1987-02-06 1987-02-06 Ultrasonic flaw detector Expired - Lifetime JP2507383B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62024817A JP2507383B2 (en) 1987-02-06 1987-02-06 Ultrasonic flaw detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62024817A JP2507383B2 (en) 1987-02-06 1987-02-06 Ultrasonic flaw detector

Publications (2)

Publication Number Publication Date
JPS63193060A true JPS63193060A (en) 1988-08-10
JP2507383B2 JP2507383B2 (en) 1996-06-12

Family

ID=12148740

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62024817A Expired - Lifetime JP2507383B2 (en) 1987-02-06 1987-02-06 Ultrasonic flaw detector

Country Status (1)

Country Link
JP (1) JP2507383B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010001564A1 (en) 2008-07-01 2010-01-07 パナソニック株式会社 Ultrasound diagnostic apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5640756A (en) * 1979-09-12 1981-04-17 Sumitomo Metal Ind Ltd Automatic evaluation device for steel material

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5640756A (en) * 1979-09-12 1981-04-17 Sumitomo Metal Ind Ltd Automatic evaluation device for steel material

Also Published As

Publication number Publication date
JP2507383B2 (en) 1996-06-12

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