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1. 发明专利

JPS60165544A ARRAY TYPE ULTRASONIC PROBE 失效
公开(公告)号：JPS60165544A
公开(公告)日：1985-08-28
申请号：JP1994484
申请日：1984-02-08
申请人： HITACHI LTD
发明人： KINO HIROTOSHI , TAKESUTE YOSHINORI , SASAKI SOUJI , HIRUOKA SHIYUUICHI
IPC分类号： G01N29/24 , G01N29/04 , G01N29/26
摘要： PURPOSE:To reduce the transmission loss in a cable by providing >=1 pulser circuit which outputs exciting pulses for exciting wave transmitters, and incorporating a distributing circuit and distributing exciting pulses to a wave transmitter side train. CONSTITUTION:The distributing circuit 18 incorporated in the ultrasonic probe 17 togehter with the pulser circuits 15 inputs exciting pulse generated by the circuits 15 on the basis of the synchronizing signal from an external ultrasonic wave flaw detector 16, and distritubes them to plural channels and also supplies a specific bias signal to connect the input signal to optical channels. Then, the exciting pulses are applied to respective wave transmitters in the transmitter side train T1 to send out an ultrasonic wave in time series, and a receiver side train R1 is made to correspond to the transmitter side train T1; and receivers of channels 1-(i) transmit and receive the ultrasonic wave successively in time series to perform flaw detection as to the entire circumference of a tube. Thus, the flaw detection is performed excellently.

2. 发明专利

JPS58179305A Electromagnetic ultrasonic measuring device 失效
标题翻译：电磁超声波测量装置
公开(公告)号：JPS58179305A
公开(公告)日：1983-10-20
申请号：JP6112682
申请日：1982-04-14
申请人： Hitachi Ltd , Sumitomo Metal Ind Ltd
发明人： YAMAGUCHI HISAO , FUJISAWA KAZUO , KADOWAKI TAKASHI , ITOU SUSUMU , SASAKI SOUJI , SATOU KAZUYA
IPC分类号： G01B17/02 , G01N29/24
CPC分类号： G01N29/2412 , G01B17/02 , G01N2291/02854 , G01N2291/0421
摘要： PURPOSE:To improve the detection sensitivity, by making the multipoint measurement in a circumferential direction of a steel pipe possible in an electromagnetic ultrasonic measuring device which uses the ultrasonic wave of the longitudinal wave effective for measuring the thickness of the material to be inspected which is in a high temp. state. CONSTITUTION:A DC excitation coil 12 is wound so as to enclose a steel pipe 1 and a transmission and reception coil 11 is disposed in the position facing the pipe 1 in the central part of said coil 12. The greater part of the DC magnetic flux generated by a DC excitation coil 12 is the magnetic field By of the component parallel with the surface of the steel pipe 1 necessary for transmission and reception of the electromagnetic ultrasonic wave of the longitudinal wave, and if the quantity of excitation for the coil 12 is increased, the magnetic field By increases roughly proportionally. The disposition of plural transmission and reception coils so as to face the steel pipe is made possible by the above-mentioned constitution and the thickness over the entire circumference of the pipe is measured.
摘要翻译：目的：为了提高检测灵敏度，通过在使用有效的长波超声波的电磁式超声波测量装置中，可以在钢管的圆周方向上进行多点测量，以测量被检查材料的厚度，在高温州。构成：缠绕直流励磁线圈12以包围钢管1，并且在所述线圈12的中心部分的面向管1的位置设置发送和接收线圈11.直流磁通的大部分由直流励磁线圈12产生的是与纵波的电磁超声波的发送接收所需的钢管1的表面平行的分量的磁场By，线圈12的励磁量为增加，磁场增加大致成比例。通过上述结构可以实现多个发送和接收线圈与钢管相对的配置，并且测量管的整个圆周上的厚度。

3. 发明专利

JPS58117452A ULTRASONIC IMAGE PICKUP APPARATUS 失效
公开(公告)号：JPS58117452A
公开(公告)日：1983-07-13
申请号：JP22982
申请日：1982-01-06
申请人： HITACHI LTD
发明人： ISHII JIYUNICHI , SASAKI SOUJI , KINO HIROTOSHI
IPC分类号： A61B8/00 , G01N29/26
摘要： PURPOSE:To generate ultrasonic beam with area adapted to a specimen and provide required opening condition corresponding to material of the specimen, by a method wherein area of the ultrasonic beam is controlled electronically using a probe having divided vibrators. CONSTITUTION:A vibrator selecting circuit 3 operates divided vibrators 104 selectively. A drive delay circuit 4 for shifting the drive timing of selected vibrators and/or a receiving signal delay circuit 5 for adding the selected receiving signals in time shifting and forming representative receiving signals are installed. A control unit 11 transfers data of area, direction and focusing region of the ultrasonic beam corresponding to material and shape of a specimen into a beam control circuit 6. Ultrasonic transmission drives selected vibrators 104 and provides the time shifting thereto by the drive delay circuit 4. Signal received by each vibrator is selected by the vibrator selecting circuit 3, and receiving signals 301B are delayed and added by the receiving signal delay circuit 5 according to control signal 111 from the control unit 11, thereby receiving signal 120 is obtained and entered in a wave form memory 7. An image address generator 9 generates image address 91 corresponding to position signal regarding region designated in a circuit 10, and the address is displayed (15).

4. 发明专利

JPS57208451A ELECTROMAGNETIC TYPE ULTRASONIC FLAW INSPECTOR 失效
公开(公告)号：JPS57208451A
公开(公告)日：1982-12-21
申请号：JP9304781
申请日：1981-06-18
申请人： HITACHI LTD
发明人： SATOU KAZUYA , KUBOTA JIYUN , SASAKI SOUJI , KADOWAKI TAKASHI
IPC分类号： G01N29/04 , G01N29/24
摘要： PURPOSE:To expand a flaw sampling area to be close to the surface of an object to be inspected by feeding a signal as detection output to a monitor with a compensation coil provided to remove or reduce leakage waves due to a direct induction from a transmission coil. CONSTITUTION:An eddy current develops on the surface of an object 1 to be inspected with a pulse current fed to a transmission coil 31 from a pulse generator 4. Since a magnetic field is applied to the surface of a sample 1 from a magnetic generator comprising a magnetic pole 21, an exciting coil 22 and a d.c. power source 23, a Lorentz's force is generated along the surface of the sample 1 and vertical to a current vector and a transversal wave advances the thickness-wise direction of the sample 1. The transversal wave is reflected back on a bottom defect 11 of the sample 1 produces an eddy current on the surface of the sample 1 due to an interaction with the magnetic field, entailing the gneration of an induced power in a receiving coil 32. A compensation coil 33 is provided outside the transmission coil 31 and differentially connected with the receiving coil 32 to offset and remove inductive noise voltage.

5. 发明专利

JPS57203950A ELECTROMAGNETIC ULTRASONIC FLAW DETECTOR 失效
公开(公告)号：JPS57203950A
公开(公告)日：1982-12-14
申请号：JP8818981
申请日：1981-06-10
申请人： SUMITOMO METAL IND , HITACHI LTD
发明人： YAMAGUCHI HISAO , FUJISAWA KAZUO , KADOWAKI TAKASHI , ITOU SUSUMU , SASAKI SOUJI , SATOU ICHIYA
IPC分类号： G01N29/04 , G01N29/24
摘要： PURPOSE:To raise a detection signal level and thereby to improve the detection sensitivity by winding two DC exciting coils around a material to be detected in a surrounding manner and by arranging a transmission-reception coil in a space between the two DC exciting coils. CONSTITUTION:Two DC exciting coils 11 and 12 are wound independently around a material 1 to be detected in a surrounding manner. Then, excitation is made so that magnetic fluxes generated from the two DC exciting coils are joined, while a transmission-reception coil 13 is arranged opposite to the material 1 to be detected in a space between the coils 11 and 12. Most of the magnetic fluxes generated from the DC exciting coils 11 and 12 pass through the inside of the material 1 and the directions thereof are in parallel to the surface of the material 1 to be detected. Accordingly, the component of magnetic flux required for transmitting and receiving a longitudinal electromagnetic ultrasonic wave and being parallel to the surface of the material to be detected is made large and thus a detection signal level can be raised.

6. 发明专利

JPS5745445A Electromagnetic ultrasonic flaw detector 失效
标题翻译：电磁超声波检波器
公开(公告)号：JPS5745445A
公开(公告)日：1982-03-15
申请号：JP12108780
申请日：1980-09-03
申请人： Hitachi Ltd
发明人： SATOU ICHIYA , KUBOTA JIYUN , SASAKI SOUJI , ITOU SUSUMU , KADOWAKI TAKASHI
IPC分类号： G01N29/04 , G01N29/24
CPC分类号： G01N29/2412 , G01N2291/02854
摘要： PURPOSE:To measure a minute defect and a defect near surface without being influenced by the change in measuring condition by providing respectively two pieces of radio transmission coils and radio reception coils in juxtaposition. CONSTITUTION:When a material 2 to be inspected is put into the DC magnetic field by an electromagnet 1, and a pulse current is applied by a pulser 5 to radio transmission coils 3s, 3m, a ultrasonic wave is generated in the material 2, propagates in the material 2 and is received by radio reception coils 4s, 4m. The outputs of the coils 4s, 4m are inputted via differential amplifier 6d, and a waveform shaping circuit 9d to a divider 10, whilist the output of the coil 4s for comparison is inputted via an amplifier 6s and a waveform shaping circuit 9s to a divider 10. The output divided from the differential output signal by a comparing output signal is monitored by a motor 7. Then, the output does not change despite the change in measuring conditions such as of magnetic flux density and gaps, and the sizes of defects are inspected with good accuracy.
摘要翻译：目的：通过分别提供并联的两条无线电发射线圈和无线电接收线圈，来测量测量条件变化所影响的微小缺陷和表面附近的缺陷。构成：当通过电磁体1将待检查的材料2放入直流磁场中时，脉冲发生器5向无线发送线圈3s，3m施加脉冲电流时，在材料2中产生超声波，在材料2中并由无线电接收线圈4s，4m接收。通过差分放大器6d输入线圈4s，4m的输出，通过放大器6s和波形整形电路9s将分频器10的输出端与振荡器4的输出对应的波形整形电路9d输入到分频器通过比较输出信号与差分输出信号分开的输出由电动机7监测。然后，尽管诸如磁通密度和间隙等测量条件发生变化，但是输出也不改变，并且缺陷的尺寸是检查准确性好。

7. 发明专利

JPS56156094A ULTRASONIC TRANSMISSION ELEMENT 失效
公开(公告)号：JPS56156094A
公开(公告)日：1981-12-02
申请号：JP5784880
申请日：1980-05-02
申请人： HITACHI LTD
发明人： ISHII JIYUNICHI , KUBOTA JIYUN , SASAKI SOUJI
IPC分类号： H04R1/40 , G01N29/24 , G10K11/32 , H04R1/32 , H04R17/00
摘要： PURPOSE:To vary the position of converging point over a wide range for the ultrasonic beams, by securing a close distribution for plural loop oscillators approximate to a round oscillator and a coarse distribution for plural loop oscillators existing the peripheral areas of the round oscillator. CONSTITUTION:A difference of outer diameter is reduced between the adjacent loop spherical oscillators for those 12-14 which are approximate to a round spherical oscillator 1 at the center part; while the difference of outer diameter is increased for the loop spherical oscilators 22-24 which locate at the peripheral areas of the oscillator 1. When using the loop spherical oscillators, the same reference exciting voltage is applied to the oscillator 1 as well as to oscillators 12-14 for driving these oscillators. On the other hand, the prescribed exciting voltage is applied to other oscillators 22-24, respectively.

8. 发明专利

JPS5631637A INSTRUMENT UNIT OF ELECTROMAGNETIC ULTRASONIC WAVE 失效
公开(公告)号：JPS5631637A
公开(公告)日：1981-03-31
申请号：JP10719079
申请日：1979-08-24
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： SATOU ICHIYA , MIYAGAWA KAZUO , SASAKI YUKINDO , KAWAMURA SHIYOUJI , SATOU SHIYUUICHI , SASAKI SOUJI , KUBOTA JIYUN , ITOU SUSUMU
IPC分类号： G01N29/04 , G01N29/24 , G10K15/04
摘要： PURPOSE:To remove the effect of mode conversion wave, by constituting respective transmission and reception coils with a plurality of coils, coupling the coils differentially and using the differential amplifier in case of reception. CONSTITUTION:The two transmission coils 51, 52 are connected in additional connection. On the other hand, the two reception coils 61, 62 are connected differentially and the connection point of both the coils is connected to the differential amplifier 11 as the grounding point. If a failure 10 is just above the reception coil 62 of the sample 1, the failure waves F1, F2 due to failure 10 are appeared in the reception coil 62. Thus, each of the 1st and 2nd transmission waves P1, P2 and mode conversion waves M1, M2 shows the waveform lowered in the amplitude due to the failure 10. Accordingly, four waveforms of P1', F1', F2', and P2' are output to the differential amplifier 11. Thus, through the use of differential system, the effect of the mode conversion waves M1, M2 can be rejected.

9. 发明专利

JPS5383673A ULTRASONIC INSPECTOR 失效
公开(公告)号：JPS5383673A
公开(公告)日：1978-07-24
申请号：JP15974576
申请日：1976-12-28
申请人： HITACHI LTD
发明人： KANDA KIMIO , SASAKI SOUJI , MATSUI TETSUO
IPC分类号： G01N29/44 , G01N29/04 , G01N29/26
摘要： PURPOSE:To make possible three-dimensional flaw detection of three-dimensional areas by making varying-angle driving of a varaible angle probe and moving the probe in directions intersecting with the planes inclusive of ultrasonic beam directions.

10. 发明专利

JPS52134490A ULTRASONIC DEFECT SCANNING DEVICE 失效
公开(公告)号：JPS52134490A
公开(公告)日：1977-11-10
申请号：JP4995976
申请日：1976-05-04
申请人： HITACHI LTD
发明人： TAKESUTE YOSHINORI , SASAKI SOUJI
IPC分类号： G01N29/24 , G01N29/04
摘要： PURPOSE:To simplify the defect scanning procedure and the data procession by equipping the probe with the adaptor on which the groove of the same form as on the outer periphery of the conductor is formed on its internal face.

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