JPS5784352A - Electromagnetic supersonic wave flaw detecting device - Google Patents
Electromagnetic supersonic wave flaw detecting deviceInfo
- Publication number
- JPS5784352A JPS5784352A JP55159526A JP15952680A JPS5784352A JP S5784352 A JPS5784352 A JP S5784352A JP 55159526 A JP55159526 A JP 55159526A JP 15952680 A JP15952680 A JP 15952680A JP S5784352 A JPS5784352 A JP S5784352A
- Authority
- JP
- Japan
- Prior art keywords
- coils
- waveform
- output
- receiving
- comparing
- 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
Links
- 238000007493 shaping process Methods 0.000 abstract 3
- 238000001514 detection method Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
- G01N29/2412—Probes using the magnetostrictive properties of the material to be examined, e.g. electromagnetic acoustic transducers [EMAT]
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
PURPOSE:To detect the presence of a flaw and its size with high accuracy even at the time when measuring condition varies, by executing the flaw detection by utilizing the ratio of two receiving signals outputted from two receiving coils. CONSTITUTION:Two each of transmitting coils 3 and receiving coils 4 are arranged in parallel. The coils on one side are to become comparing coils 3s and 4s, and the coils on the other sides are to become measuring coils 3m and 4m. An output of the receiving coil 4m is amplified by an amplifier 6d, and then, the waveform is shaped by a waveform-shaping circuit 9d and given as a numerator input of a divider 10. On the other hand, after an output of the comparing's receiving coil 4s is made to pass an amplifier 6s, the waveform is shaped by a waveform-shaping circuit 9s and given as a denominator input of the divider 10. In short, an output which is produced by dividing a measuring output signal by a comparing output signal is monitored by a monitor 7. Further, the waveform-shaping circuits 9s and 9d take in signals by a prescribed time synchronizing with pulse current of a pulser 5 and contain a gate circuit and a peak-holding circuit which holds a wave height value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55159526A JPS5784352A (en) | 1980-11-14 | 1980-11-14 | Electromagnetic supersonic wave flaw detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55159526A JPS5784352A (en) | 1980-11-14 | 1980-11-14 | Electromagnetic supersonic wave flaw detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5784352A true JPS5784352A (en) | 1982-05-26 |
Family
ID=15695689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55159526A Pending JPS5784352A (en) | 1980-11-14 | 1980-11-14 | Electromagnetic supersonic wave flaw detecting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5784352A (en) |
-
1980
- 1980-11-14 JP JP55159526A patent/JPS5784352A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5523476A (en) | Detection circuit device for ultrasonic propagation time | |
| JPS6445050A (en) | Mass spectrometer for secondary ion | |
| US4146837A (en) | Apparatus for detecting and recording surface and internal flaws | |
| JPS5526413A (en) | Waveform analyzing unit | |
| JPS6450965A (en) | Voltage measuring method and apparatus with electronic probe | |
| ES437399A1 (en) | Apparatus and method for detecting a moving metal mass including means to discriminate signals having a particular period | |
| JPS53128238A (en) | Velocity test system | |
| JPS5580013A (en) | Signal measuring device | |
| JPS5233788A (en) | Signal identification apparatus in ae signal position detection appara tus | |
| JPS5216251A (en) | Pulse separator | |
| SU868362A1 (en) | Device for measuring wave propagation velocity | |
| BRUIN | Delta V amplifier(velocity and deceleration measurement of projectiles in flight) | |
| JPS57124211A (en) | Ultrasonic measuring device | |
| SU1035494A1 (en) | Electric contact flow detector | |
| SU721745A2 (en) | Multichannel device for determining the coordinates of propagating crack | |
| JPS5679963A (en) | Waveform measuring method and its device | |
| SU138386A1 (en) | Radioactive device for the determination of sulfur in petroleum products | |
| JPS55164353A (en) | Hardening characteristic measuring unit by acoustic measurement | |
| JPS5544928A (en) | Method of detecting position of moving article in tube | |
| SU558186A1 (en) | Device for measuring the torque on the shaft | |
| SU105174A1 (en) | The method of detecting, determining the range and measuring the intensity of signals from weakly reflecting radio waves of meteorological objects and device for its implementation | |
| JPS6413487A (en) | Ultrasonic detector | |
| JPS5327088A (en) | Signal source position orienting device | |
| JPS6443767A (en) | Frequency discriminating device | |
| GB921711A (en) | Improvements in or relating to counting devices |