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1. 发明专利

JPS6128861A Manufacture of electromagnetically supersonic flaw detection transducer 失效
标题翻译：电磁超声波检测传感器的制造
公开(公告)号：JPS6128861A
公开(公告)日：1986-02-08
申请号：JP15031284
申请日：1984-07-19
申请人： Mitsubishi Electric Corp , Nippon Steel Corp
发明人： KAWASHIMA KATSUHIRO , MUROTA SHOJI , HAYASHI OSAMU , KAWABATA TOSHIMITSU
IPC分类号： G01N29/04 , G01N29/24
CPC分类号： G01N29/2412
摘要： PURPOSE:To improve heat resistance preventing outflow of a cooling water, by filling insulation coils with a heat resistant resin while a heat shielding case, a ring guard and a housing are arranged and bonded watertight. CONSTITUTION:Insulation coils 1 are housed into a heat shielding case 2 and a heat resistant resin 8 is filled between insulation coils 1 to solidify. Then, the side and the top of the heat shielding case 2 are covered with a ring guard 9 and joined together with an adhesive 10. A housing 4 is bonded watertight with an adhesive 12 outside the ring guard 9 through a heat resistant packing 11. In this manner, the insulation coils 1 are protected from a high heat to prevent outflow of a cooling water to a hot slab 7 and a transducer highly resisting to heat impact can be obtained thereby improving the heat resistance and durability.
摘要翻译：目的：为了提高耐热性，防止冷却水流出，通过在隔热罩，环形防护罩和外壳上布置并粘接防水树脂，将耐热树脂填充绝缘线圈。构成：绝缘线圈1被容纳在隔热壳体2中，并且绝缘线圈1之间填充耐热树脂8以固化。然后，隔热壳体2的侧面和顶部被环形护罩9覆盖，并用粘合剂10连接在一起。壳体4通过耐热填料11与防护罩9外部的粘合剂12水密地粘合。以这种方式，保护绝缘线圈1免受高热阻，以防止冷却水流出到热板7，并且可以获得高耐热冲击的换能器，从而提高耐热性和耐久性。

2. 发明专利

JPS5832161A ELECTROMAGNETIC ULTRASONIC FLAW DETECTOR 失效
公开(公告)号：JPS5832161A
公开(公告)日：1983-02-25
申请号：JP12963781
申请日：1981-08-19
申请人： NIPPON STEEL CORP , MITSUBISHI ELECTRIC CORP
发明人： KAWASHIMA KATSUHIRO , MUROTA SHIYOUJI , INOUE SATORU , SANEMORI AKIROU
IPC分类号： G01N29/04 , G01N29/24
摘要： PURPOSE:To detect the faults of a signal transmission circuit by measuring the currents in the single or plural positions of the signal transmission circuit of a flaw detector in the stage of transmission of an ultrasonic wave and diagnosing the waveforms thereof. CONSTITUTION:A resistor 2 and a capacitor 3 are connected in series to both terminals of a high voltage DC power source 1, and a switch 4 for signal transmission from a connection point P1, a damping resistor 5 and a signal transmission coil 6 are connected thereto. A current probe 8 between the outputs of the coil 6 and the power source 1 detects the current flowing in the coil 6. A current probe 9 between the output terminal on the negative side of the power source 1 and the earth detects the current flowing from the coil 6 through the earth to the power source 1. The outputs of the probes 8, 9 are transmitted via pass filters 10, 13 to zero cross detectors 11, 14. A decision circuit 15 decides the presence or absence of any fault in an electromagnetic ultrasonic wave transmission circuit from the signals of the detectors 11, 14 and feeds the output thereof to a control circuit 16.

3. 发明专利

JPS6031009A APPARATUS FOR MEASURING THICKNESS OF SOLIDIFIED CAST PIECE 失效
公开(公告)号：JPS6031009A
公开(公告)日：1985-02-16
申请号：JP13892383
申请日：1983-07-29
申请人： NIPPON STEEL CORP , MITSUBISHI ELECTRIC CORP
发明人： KAWASHIMA KATSUHIRO , YONEDA MITSUO , MIYOSHI TETSUO
IPC分类号： B22D11/16 , G01B17/02 , G01N29/04
摘要： PURPOSE:To measure the thickness of a continuously cast steel piece highly accurately, by measuring the wavelength of the received signal of an electromagnetic ultrasonic wave, and correcting the transmission time of the ultrasonic wave. CONSTITUTION:The waveform of an electromagnetic-ultrasonic-wave transmitting pulse 36 through an A/D converter 23 of a transmission-time measuring circuit 12 and the waveform of an electromagnetic-ultrasonic-wave received signal 37 after the transmission through a continuously cast steel piece are stored in the addresses in a waveform memory circuit 24 corresponding to the elapsed time. The waveforms are read out. The waveform of the received signal is determined by a wavelength operating circuit 30 based on the outputs of first and third zero-crossing detection circuits 26 and 28. In correspondence with the wavelength, which is changed depending on the internal state of the steel piece, a correcting value is computed by a correcting-value operating circuit 34 of a correcting circuit 22. Based on the output of a second zero-crossing detecting circuit 27 and the output of an ultrasonic-wave-generation-point detecting circuit 29 responding to the signal 36, which is not affected by noise and the like, the transmission time, which is computed by a transmission-time operating circuit 31, is corrected by a correction operation circuit 35. Therefore, based on the transmission time, which is not affected by the internal state, change in amplitude of the received signal, overlapped noise, and the like, the thickness of the solidified steel piece is measured highly accurately.

4. 发明专利

JPS5832159A ELECTROMAGNETIC ULTRASONIC FLAW DETECTOR 失效
公开(公告)号：JPS5832159A
公开(公告)日：1983-02-25
申请号：JP12963581
申请日：1981-08-19
申请人： NIPPON STEEL CORP , MITSUBISHI ELECTRIC CORP
发明人： KAWASHIMA KATSUHIRO , MUROTA SHIYOUJI , INOUE SATORU , SANEMORI AKIROU
IPC分类号： G01N29/04 , G01N29/24
摘要： PURPOSE:To evaluate defects with high accuracy by detecting the magnitude and frequency of the transmission current in the stage of signal transmission and adding a predetermined correction value thereto. CONSTITUTION:When ultrasonic waves are transmitted by closing a switch 44 in accordance with the control signal (a) of a deciding device 13, the ultrasonic wave signal Ei passed through a material 9 to be inspected with a signal receiving coil 8 is amplified with an amplifier 12, and is quantized and stored by a memory 19. At the same time, a transmission current 14 is detected with a current probe 16, and a frequency f0 is measured with a frequency measuring device 17. A correction value F1 is outputted with a correction value converter 18. Further, in a corrector 20, a peak value EP1 is extracted from the quantized ultrasonic wave signal Ei by the command signal (b) of the device 13 and is subjected to product operation EP1XF1 with the output of the converter 18, and the result thereof is inputted to the device 13, whereby the internal defects of the material 9 are evaluated.

5. 发明专利

JPS5832162A DETECTOR FOR ABNORMALITY OF ELECTROMAGNETIC ULTRASONIC WAVE GENERATOR 失效
公开(公告)号：JPS5832162A
公开(公告)日：1983-02-25
申请号：JP12963881
申请日：1981-08-19
申请人： NIPPON STEEL CORP , MITSUBISHI ELECTRIC CORP
发明人： KAWASHIMA KATSUHIRO , MUROTA SHIYOUJI , INOUE SATORU , SANEMORI AKIROU
IPC分类号： G01N29/04 , G01N29/24
摘要： PURPOSE:To detect the abnormality of an electromagnetic ultrasonic wave generator in an early time and to protect said device by detecting ultrasonic wave transmission current, and judging the presence or absence of any abnormality from the frequency components and magnitude of the waveform of said current. CONSTITUTION:When electric charge is charged from a high voltage DC power source 1 to a capacitor 3 for charging and discharging through a resistor 2 for charging and a switch 4 is closed, the charged electric charge is discharged through a damping resistor 5, a coaxial cable 6 and a signal transmission coil 7. The signal current in this time is detected with a current probe 9, and said current is inputted via a band pass filter 10 and a detector 11 to a comparator 12. In the comparator 12, the current is compared with a threshold value, and when the input signal is larger than the threshold value, a control circuit 13 alarms and displays the generation of abnormality and interrupts the high voltage DC power source 1 in order to protect an electromagnetic ultrasonic wave generator 8.

6. 发明专利

JPS5832160A ELECTROMAGNETIC ULTRASONIC FLAW DETECTOR 失效
公开(公告)号：JPS5832160A
公开(公告)日：1983-02-25
申请号：JP12963681
申请日：1981-08-19
申请人： NIPPON STEEL CORP , MITSUBISHI ELECTRIC CORP
发明人： KAWASHIMA KATSUHIRO , MUROTA SHIYOUJI , INOUE SATORU , SANEMORI AKIROU
IPC分类号： G01N29/04 , G01N29/24
摘要： PURPOSE:To detect flaws with high efficiency and accuracy in adequate response with the change in the conditions of signal transmission by detecting the waveform of transmission current, and processing the detection signal thereof and the ultrasonic reception signal obtained from the output of an amplifier in combination. CONSTITUTION:The output of an electromagnetic ultrasonic wave transmitting and receiving device 20 is inputted to an amplifier 21, by which the signal is amplified to a level at which various signal processings are possible. The amplified signal is inputted to a signal processing unit 31. A current detector 30 detects the waveform of the transmission current of the device 20 and inputs the same similarly to the unit 31. The unit 31 has the function of discriminating whether a probe for signal transmission and reception is in proximity to the material to be inspected or is apart therefrom form the frequency and attenuation time or peak value of the waveform of the transmission current, and handling the output signal of the amplifier 21 as available signal only when said probe is in proximity to the material to be inspected.

7. 发明专利

JP2012083111A Sound velocity distribution measuring device, sound velocity distribution measuring method, and program 有权
标题翻译：声速分布测量装置，声速分布测量方法和程序
公开(公告)号：JP2012083111A
公开(公告)日：2012-04-26
申请号：JP2010226855
申请日：2010-10-06
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： NAGATA YASUAKI , KAWASHIMA KATSUHIRO
IPC分类号： G01H5/00 , G01N29/00 , G01N29/09
摘要： PROBLEM TO BE SOLVED: To measure an optional inner sound velocity distribution, without assuming the form of an inner sound velocity distribution of an object to be measured.SOLUTION: A sound velocity distribution measuring device according to the present invention comprises: a resonance frequency measuring section that radiates ultrasonic waves in teh thickness direction of an object to be measured and that measures N resonance frequencies up to the Nth resonance frequency of the thickness direction of the object to be measured; an inverse-analysis section that assumes a mass-spring system model made up of N pieces of mass bodies and (N-1) pieces of springs connecting the mass bodies mutually adjacent to each other, and that calculates a mass of each of the N pieces of mass bodies and a spring constant of each of the (N-1) pieces of springs, utilizing the measured N resonance frequencies; and a sound velocity distribution calculating section that calculates acoustic impedance and the thickness of each layer divided into (N-1) layers having a thickness corresponding to each length of the (N-1) pieces of springs in the thickness direction of the object to be measured, by using a known density of the object to be measured and using the mass and the spring constant calculated on the presumption that the sound velocity distribution of the ultrasonic waves in the thickness direction of the object to be measured is symmetrical with the center of the thickness of the object to be measured.
摘要翻译：要解决的问题：为了测量可选的内部音速分布，而不考虑要测量的对象的内部声速分布的形式。解决方案：根据本发明的声速分布测量装置包括：共振频率测量部分，其在被测量物体的厚度方向上辐射超声波，并且测量直到第N共振频率的N个共振频率要测量的物体的厚度方向; 假设由N个质量体构成的质量弹簧系统模型和连接质量体彼此相邻的（N-1）个弹簧的反分析部，并且计算N的每个的质量使用所测量的N个共振频率的每个（N-1）个弹簧块的质量体和弹簧常数; 以及声速分布计算部分，其计算具有对应于所述物体的厚度方向上的（N-1）个弹簧的每个长度的厚度的（N-1）层的每个层的声阻抗和厚度，通过使用被测量物体的已知密度，并使用根据被测定物体的厚度方向上的超声波的声速分布与中心对称的质量和弹簧常数来测定的待测物体的厚度。版权所有（C）2012，JPO＆INPIT

8. 发明专利

JPH06148148A ULTRASONIC ATTENUATION MEASURING METHOD, AND MATERIAL CHARACTERISTIC EVALUATING METHOD 失效
公开(公告)号：JPH06148148A
公开(公告)日：1994-05-27
申请号：JP30389392
申请日：1992-11-13
申请人： NIPPON STEEL CORP
发明人： ORIBA RAITO , TAWARAGUCHI TAKAO , KAWASHIMA KATSUHIRO , AKAGI TOSHIO
IPC分类号： G01N29/04 , G01N29/00 , G01N29/20
摘要： PURPOSE:To provide a method for measuring the ultrasonic attenuation natural to a material and a method for evaluating the material characteristic in a method for generating and detecting an ultrasonic wave on a metal thin plate in no contact and no destruction. CONSTITUTION:In a resonance electromagnetic ultrasonic measuring method using a transducer formed of a transmitting and receiving coil 1 for generating and detecting the ultrasonic wave propagated in the plate thickness direction of a metal thin plate 2 and a magnet 3 for giving a static magnetic field to the metal thin plate inner part, the frequency of high frequency current of burst wave or sine wave sent to the transmitting and receiving coil 1 is swept, and the thickness resonance spectrum of the ultrasonic wave propagated in the plate thickness direction is measured, whereby the resonance half-width is determined, and the ultrasonic attenuation in the resonance frequency is determined from this half-width and the known sound speed or plate thickness corresponding to the respective resonance frequency.

9. 发明专利

JPH036586A METHOD FOR CORRECTING SIGNAL IN COMPLEX AMPLITUDE MEASUREMENT 失效
公开(公告)号：JPH036586A
公开(公告)日：1991-01-14
申请号：JP14067489
申请日：1989-06-02
申请人： NIPPON STEEL CORP
发明人： TAWARAGUCHI TAKAO , KAWASHIMA KATSUHIRO
IPC分类号： G03H3/00
摘要： PURPOSE:To obtain an accurate complex amplitude signal by processing the real part signal and imaginary part of the complex amplitude signal by Fourier transformation and finding such a phase correcting value that the phase difference of a Doppler shift frequency component is 90 deg.. CONSTITUTION:A quadrature detector 1 is equipped with a phase shifter 4 which makes a 90 deg. phase shift and such a phase correcting value that the phase difference of the Doppler shift frequency component is 90 deg. is found by processing the real part signal and imaginary part signal by Fourier transformation, thereby make phase corrections, frequency by frequency. Namely, the phase correcting value DELTAphid with which the phase difference between the center frequency component of the real part signal and the center frequency component of the imaginary part signal becomes 90 deg. is calculated. Then, phase corrections proportional to DELTAphid are made for either the real part signal or imaginary part signal by all frequency components in an effective frequency band. Consequently, the accurate complex amplitude signal is obtained.

10. 发明专利

JPH0232578B2 失效
公开(公告)号：JPH0232578B2
公开(公告)日：1990-07-20
申请号：JP18898781
申请日：1981-11-25
申请人： NIPPON STEEL CORP
发明人： KAWASHIMA KATSUHIRO , HAMADA NAOYA
IPC分类号： G01N29/00 , G01N29/24

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