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1. 发明专利

JPS60120242A ULTRASONIC WAVE PROBE SHOE 失效
公开(公告)号：JPS60120242A
公开(公告)日：1985-06-27
申请号：JP22845483
申请日：1983-12-05
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KAKINUMA YUKIO , KANDA KIMIO , YAMAZAKI SABUROU
IPC分类号： G01N29/24 , G01N29/28
摘要： PURPOSE:To reduce friction, by providing a specified gap between the surface of a body to be checked and a shoe, which has the bottom surface, whose curvature is the same as that of the curved surface of the body to be checked, through a sliding ring, providing grooves, which surround the bottom surface in a plurality of directions, and feeding a liquid through a path penetrating the shoe. CONSTITUTION:A probe 1 has a wedge 2 for guiding ultrasonic waves and vibrators 3, 4 and 5. A shoe 7 is supported by the probe 1 through a shoe supporting frame 6. The shoe 7 comprises two blocks on the sending side and the receiving side. The two blocks are partitioned by a sound shielding material 8. The vibrators 3-5 are coupled in the recess part of the shoe. Ultrasonic wave beams 9-11 are inputted in a body to be checked through the shoe 7, a bottom surface 12 of the shoe, and a liquid film 13. A sliding ring 14, an injecting port 15, a guide path 16, and a liquid groove 17 are provided. The bottom surface 12 is made to conform to the curvature R of the surface of the body to be checked. The thickness of the liquid film 13 can be changed by a spacer 18.

2. 发明专利

JPS60102554A ULTRASONIC PROBE 失效
公开(公告)号：JPS60102554A
公开(公告)日：1985-06-06
申请号：JP20900683
申请日：1983-11-09
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KAKINUMA YUKIO , KANDA KIMIO
IPC分类号： G01S7/521 , G01N29/04 , G01N29/28
摘要： PURPOSE:To detect the flaw in columnar matter from the outer surface thereof with high sensitivity, by contacting a film like probe with the columnar matter having a curved surface and processed into a stepped form so as to follow the surface of said matter. CONSTITUTION:A film like probe 1 is attached to the bottom surface of a probe case A and a flexible backing material 2 is bonded to the back surface thereof to attach a cable 3. The surface, which is contacted with the surface of columnar matter B, of the side plate of the probe case A is processed so as to have radius of curvature same to that of the surface of the columnar matter B. The probe case A is contacted with the surface of the columnar matter B and an ultrasonic wave is emitted so as to allow the film like probe 1 to follow the surface of the columnar matter B by a press screw 6 and a contact plate 7. At this time, the flexible backing material 3 attenuates energy propagating behind the film like probe 1. Therefore, by preparing only one probe and the probe case having specific radius of curvature, the vicinity of an axial core can be subjected to flaw detection even with respect to an object to be inspected having a stepped curved surface such as a turbine shaft with high sensitivity and high resolving power.

3. 发明专利

JPS59218948A ULTRASONIC WAVE PROBE HAVING SEALING FILM FOR LIQUID LEAKAGE 失效
公开(公告)号：JPS59218948A
公开(公告)日：1984-12-10
申请号：JP1280183
申请日：1983-01-31
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KAKINUMA YUKIO , AKASU AKIRA , YAMAZAKI SABUROU , KINOSHITA KIYONOBU , NAKANO YUTAKA
IPC分类号： G01N29/24 , G01N29/28 , G01N29/04
摘要： PURPOSE:To detect a flaw precisely even when a flaw detecting surface is rough by inserting a flexible film from the periphery of an ultrasonic wave transmitting surface of an ultrasonic flaw detecting probe having a water feeding hole to the inside and pressing the film against the flaw detecting surface by liquid pressure inside the probe to prevent liquid leakage. CONSTITUTION:The water feeding hole 3 is formed on the ultrasonic probe 1 storing a transmitting/receiving vibrator and a flexible film 4 such as plastic is fitted to the probe 1 by a wear resistant metallic jig 5. The film 4 is inserted from the periphery of the ultrasonic wave transmitting surface of the probe 1 to the inside and is pressed against the flaw detecting surface 6 by water feeding pressure from a water feeding pipe 2 to prevent water leakage from a liquid staying space 7. Since the film 4 is sufficiently pressed into contact with the flaw detecting surface 6 even if undulation exists in the flaw detecting surface 6, liquid leakage is prevented and the ultrasonic transmittig surface can be precisely filled with the liquid, so that precise flaw detecting can be attained.

4. 发明专利

JPS58219451A Ultrasonic flaw detection system 失效
标题翻译：超声波检测系统
公开(公告)号：JPS58219451A
公开(公告)日：1983-12-20
申请号：JP10215182
申请日：1982-06-16
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： KANDA KIMIO , KAKINUMA YUKIO , KABUKI MIKITO , HIRUOKA SHIYUUICHI , NAITOU SHIYOUICHI , NARUSE AKISUKE
IPC分类号： G01N29/44 , G01N29/26 , G01N29/30
CPC分类号： G01N29/26
摘要： PURPOSE:To make fewer the scanning number of a probe and to prevent it from being affected by geometric echo, noise and the like by a method wherein a multibeam ultrasonic probe for sending a plurality of ultrasonic beam having different angles of refraction toward a body being examined and receiving reflected waves therefrom is moved to a preselected position on the surface of the body being examined and caused to take in an echo corresponding to the position. CONSTITUTION:On the basis of a command of taking in flaw detection data, position data and ultrasonic signals are taken in from a controller 10 and an ultrasonic flaw detector 8, respectively. Ultrasonic beams are successively sent out by a multibeam ultrasonic probe at angles 0, 45, 60, 0, 45, 60, 0... degrees of refraction in order. At each angle in the drawings, JP represents a wave transmitting signal; P1-P4 echoes from the reflecting source of the body being examined; and T1-T4 time equivalent to the distance of each echo. An image display unit 11 receives the ultrasonic signal and the position signal of the probe and generates saw tooth waves 36, 37 in synchronizing with the ultrasonic beams at angles of 0, 45, 60 degrees and then outputs scanning lines indicated by 0, 45, 60 degrees to display the surface 39, bottom surface 40, flaws 41 and so forth on a RT38.
摘要翻译：目的：为了减少探针的扫描次数，并且通过以下方法减少探针的数目，以防止其受到几何回波，噪声等的影响，其中用于向身体发送具有不同的折射角的多个超声波束的多波束超声波探头是被检查和接收的反射波被移动到正被检查的身体表面上的预选位置，并且引起对应于该位置的回波。构成：根据接收缺陷检测数据的命令，分别从控制器10和超声波探伤器8取入位置数据和超声波信号。超声波束依次由多波束超声波探头按0,45,60,0,45,60,0,60度的折射顺序发送出去。在图中的每个角度，JP表示波发送信号; P1-P4从正在检查的身体的反射源回波; 和T1-T4时间相当于每个回波的距离。图像显示单元11接收超声波信号和探头的位置信号，并以0,45度，60度的角度与超声波束同步地产生锯齿波36,37，然后输出由0,45所示的扫描线， 60度以在RT38上显示表面39，底面40，缺陷41等。

5. 发明专利

JPS55149835A ULTRASONIC FLAW DETECTING METHOD AND APPARATUS 失效
公开(公告)号：JPS55149835A
公开(公告)日：1980-11-21
申请号：JP5703579
申请日：1979-05-11
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOSHIRAE MITSUO , KAKINUMA YUKIO
IPC分类号： G01N29/06 , G01N29/04
摘要： PURPOSE:To attain real time display of an image the brightness of which is not varied with the scanning speed of a detecting contactor, by memorizing reflected waves at a high rate, and carrying out rewriting in a digital image memory in accordance with the locus of ultrasonic wave at the subsequent ultrasonic wave transmitting time. CONSTITUTION:A detecting probe 1 is adapted to transmit ultrasonic waves to the inside of a sample 5 in accordance with a transmitting pulse 101a from an ultrasonic flaw detector 3. A reflected wave from the sample 5 is converted into an electric signal by the detecting contactor 1, and a conversion signal 101b is displayed on a flaw detector 3 and output at the same time as an ultrasonic echo signal 102 into an image processor 4. The echo signal 102 is memorized by a buffer memory 7 in the image processor 4. A microcomputer 11 is adapted to apply a control signal to a deflection circuit 8 through a data transfer control circuit 10, and generate an address signal equivalent to the progress of propagation of echo, signal thereof is memorized again in a digital image memory 9. Thus, variations in the brightness of an image to occur with the scanning speed of the detecting probe can be prevented.

6. 发明专利

JPH01305351A INSPECTING APPARATUS 失效
公开(公告)号：JPH01305351A
公开(公告)日：1989-12-08
申请号：JP13551088
申请日：1988-06-03
申请人： HITACHI LTD
发明人： KINO HIROTOSHI , TAKESUTE YOSHINORI , OKADA HISAO , TSUDA KATSU , KAKINUMA YUKIO
IPC分类号： G01N29/44 , G01N29/04 , G01N29/30
摘要： PURPOSE:To perform highly reliable inspection by searching the maximum amplitude value among signals which are detected from the same signal source with a plurality of transmitting and receiving channels in real time, and automatically calibrating the sensitivity. CONSTITUTION:In a probe 2, one - N pieces of transmitting and receiving parts 201 are arranged on the circumference of the probe. The transmitting and receiving operations of each channel are electronically switched. An ultrasonic wave beam is rotated and scanned at a high speed. The received signals in each channel are outputted through a piece of cable in time series. A reference defect is provided in a sensitivity calibrating test piece 1. When the probe 2 passes the test piece 1 and a detected echo signal is obtained from the reference defect, a maximum-amplitude searching circuit 13 takes out the maximum amplitude in the same channel. A gain-correction setting circuit 14 outputs data for correcting the amplitude gain of a sensitivity averaging circuit 8 based on the obtained value. The sensitivity of each channel is corrected with the circuit 8 based on said data. The echo signal which is obtained from the reference defect can be adjusted so that a specified wave height value is obtained on the screen of a display part 12.

7. 发明专利

JPS63163269A AUTOMATIC ULTRASONIC FLAW DETECTING DEVICE 失效
公开(公告)号：JPS63163269A
公开(公告)日：1988-07-06
申请号：JP30849486
申请日：1986-12-26
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： YAMAZAKI SABURO , KAKINUMA YUKIO , NAITO SHOICHI , AKASU AKIRA , ARAI KATSUMI
IPC分类号： G01N29/26 , G01N29/04
摘要： PURPOSE:To accurately perform flaw detection by scanning a probe while profiling a surface to be inspected which consists of a curved surface part and plane parts, and calculating the position of the probe from the angle of rotation of the probe and the shape parameter of the surface to be inspected at this time. CONSTITUTION:The surface to be inspected which consists of the plane parts 6 and 8 and curved surface part 7 is scanned by the probe 1 in an X and a Y direction. This probe 1 is moved along a guide 9 and an arm 11 is rotated around a shaft 12 by an angle theta of rotation to make a scan in the X and Y directions while profiling the shape of the surface to be inspected. At this time, parameters which determine the inclinations and range of the plane parts 6 and 8 of the surface to be inspected and the curvature and range of the curved surface part 7 are set and the position of the probe 1 is calculated from the parameter values and angle theta of rotation. Consequently, an ultrasonic flaw detection position is accurately found. The angle of rotation of the arm is therefore detected to obtain probe position information, so the flaw detection as to the surface to be inspected which consists of the plane part and curved surface part is performed with high efficiency.

8. 发明专利

JPS62298709A POSITION MEASURING APPARATUS 失效
公开(公告)号：JPS62298709A
公开(公告)日：1987-12-25
申请号：JP14007986
申请日：1986-06-18
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： OOTA YASUKI , KUMASAKA KENJI , KAKINUMA YUKIO , HIBI SACHIHIRO
IPC分类号： G01B21/00
摘要： PURPOSE:To measure an accurate position, by preventing false counting caused when an inversion is invited on an incremental encoder. CONSTITUTION:A rotary incremental encoder 1, in proportion to a rotating amount of a rotary shaft to be measured, converts outputs of A- and B-phases with a phase-identifying circuit 2 into a UP-pulse or DOWN-pulse and the pulse is counted with an up-down counter 3 for issuing out the rotating amount (position data). In said identifying apparatus 2, in rise-time and breaking-time, when inversion of logic of the B-phase does not take place, neither UP-pulse nor DOWN-pulse is issued out. Consequently, regardness of a timing with which the incremental encoder 1 makes inversion, as a false counting is not created on the occasion of inversion, the counter 3 indicates always on accurate value and an accurate position can be measured.

9. 发明专利

JPS6129754A Ultrasonic probe for nozzle 失效
标题翻译：超声波探头探头
公开(公告)号：JPS6129754A
公开(公告)日：1986-02-10
申请号：JP14955484
申请日：1984-07-20
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： NARUSE AKISUKE , TAKAKU KAZUO , YAMAZAKI SABURO , KAKINUMA YUKIO , KANDA KIMIO
IPC分类号： G01N29/24
CPC分类号： G01N29/24
摘要： PURPOSE:To reduce the size of an ultrasonic probe and to improve its precision of flaw detection by providing a plane type shoe of nearly the same size with the contacting surface of the probe detachably to the contact surface of the probe. CONSTITUTION:An ultrasonic prober 9 fo a nozzle is so manufactured previously as to input an ultrasonic wave beam having an optimum angle of diffraction for every nozzle. The probe-side surface 4 of the plane type shoe 10 is worked flatly and the contact surface 6 for an object body is worked into a curved surface such as a cylinder surface. Then, the probe 9 and shoe 10 are fitted detachably with screws. Thus, the size is reduced and the precision of flaw detection is improved.
摘要翻译：目的：为了减小超声波探头的尺寸并通过提供与探头的接触表面可拆卸地连接到探头的接触表面的几乎相同尺寸的平面型的鞋，提高其探伤的精度。构成：喷嘴的超声探头9预先被制造为输入每个喷嘴具有最佳衍射角的超声波束。平面型鞋10的探针侧表面4被平坦地加工，并且用于物体的接触表面6被加工成诸如气缸表面的曲面。然后，探头9和滑靴10可拆卸地装配有螺钉。因此，尺寸减小，并且提高了探伤的精度。

10. 发明专利

JPS58129357A TRACKLESS TYPE ULTRASONIC PROBE DRIVER 失效
公开(公告)号：JPS58129357A
公开(公告)日：1983-08-02
申请号：JP1157782
申请日：1982-01-29
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KANDA KIMIO , KAKINUMA YUKIO , KINOSHITA KIYOYOSHI , NARUSE AKISUKE
IPC分类号： G01N29/26 , G01N29/265
摘要： PURPOSE:To measure the height position of a trackless type ultrasonic probe driver by detecting the pressure of a liquid with a liquid reservoir, a hose and a pressure detector. CONSTITUTION:A trackless type ultrasonic probe driver is composed of a driver body 1, an endless track 2, a probe guide 3, a probe scanning ball screw 4, an ultrasonic probe 5, a liquid reservoir 6, a liquid 7, a hose 8, a pressure detector 9 and a position indication circuit 10. The endless track 2 is made of a permanent magnet and vertically moves a steel pressure vessel 11 to be inspected attrating the side thereof. An output of the pressure detector 9 varies with the height position of the driver body 1 to be indicated on a display circuit 10.

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