JPS6454250A - Electromagnetically ultrasonic flaw detector - Google Patents

Electromagnetically ultrasonic flaw detector

Info

Publication number
JPS6454250A
JPS6454250A JP62209194A JP20919487A JPS6454250A JP S6454250 A JPS6454250 A JP S6454250A JP 62209194 A JP62209194 A JP 62209194A JP 20919487 A JP20919487 A JP 20919487A JP S6454250 A JPS6454250 A JP S6454250A
Authority
JP
Japan
Prior art keywords
comparator
ultrasonic wave
defect
electromagnetically
reference voltage
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
JP62209194A
Other languages
Japanese (ja)
Inventor
Michio Sato
Koichi Nagase
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP62209194A priority Critical patent/JPS6454250A/en
Publication of JPS6454250A publication Critical patent/JPS6454250A/en
Pending legal-status Critical Current

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  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

PURPOSE:To enable accurate identification of a defective point of material to be inspected, by inserting and connecting a comparator between an ultrasonic wave receiver and a waveform display device to discriminate a reflection echo from a defect easily from a platinum noise. CONSTITUTION:A signal of a transmitter 1 is transmitted to an electromagnetically ultrasonic transducer 5, an ultrasonic wave 6 is transmitted into material 4 to be inspected and reflected waves 8 from a defect 7 are detected therewith 5. A detection signal thereof is applied to a receiver 2 for amplification thereof or the like to be inputted into a comparator 9, which compares an output voltage of the ultrasonic wave receiver 2 with a reference voltage determined and when it exceeds the reference voltage, a pulse signal is outputted and indicate as pulse F' within a waveform display device 3 to judge the presence of a defect. When the reference voltage is adjusted to set a threshold of the comparator 9 at about noise voltage level contained in the output voltage, a display can be obtained with excellent S/N ratio.
JP62209194A 1987-08-25 1987-08-25 Electromagnetically ultrasonic flaw detector Pending JPS6454250A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62209194A JPS6454250A (en) 1987-08-25 1987-08-25 Electromagnetically ultrasonic flaw detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62209194A JPS6454250A (en) 1987-08-25 1987-08-25 Electromagnetically ultrasonic flaw detector

Publications (1)

Publication Number Publication Date
JPS6454250A true JPS6454250A (en) 1989-03-01

Family

ID=16568911

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62209194A Pending JPS6454250A (en) 1987-08-25 1987-08-25 Electromagnetically ultrasonic flaw detector

Country Status (1)

Country Link
JP (1) JPS6454250A (en)

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