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1. 发明专利

JPH11352111A POLARIZED WAVE FLAW DETECTION 失效
公开(公告)号：JPH11352111A
公开(公告)日：1999-12-24
申请号：JP16177498
申请日：1998-06-10
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： YOSHIDA YOJI , YAMAZAKI SABURO
IPC分类号： G01N29/04
摘要： PROBLEM TO BE SOLVED: To realize a flaw detection method by which the evaluation of the defects and the judgement of the kind can be easily performed by utilizing the polarization phenomenon in the angle ultrasonic wave flaw detection by 'straddle scanning', and checking the change of the sensitivity in a case when the polarization axes of a transmitter and a receiver are relatively changed. SOLUTION: A SV wave vibrating in the direction vertical to a plane of incidence of the ultrasonic wave is transmitted by a transmitter 6, and the SH wave vibrating in the direction horizontal to the plane of incidence of the ultrasonic wave is received by a receiver 7 to detect the flat defect 4a by the ultrasonic wave angle beam method by 'straddle scanning method' with an angle of refraction of 45 deg. and a straddle angle of 70 deg.. On this occasion, the SV wave reflected by the flat defect 4a is polarized by 90 deg. and converted into the SH wave, so that it can be efficiently received by the receiver 7. In a case when a spherical defect 4b is detected by the same method, the SV wave reflected by the flat defect 4a is not polarized, so that the SH wave can not be detected by the receiver 7. Accordingly the evaluation of the defect properties and the judgement of the kind can be performed by two kinds of flaw detections and checking the relative change of the defect detecting sensitivity in both flaw detections.

2. 发明专利

JP2000097919A ULTRASONIC FLAW DETECTION METHOD 失效
公开(公告)号：JP2000097919A
公开(公告)日：2000-04-07
申请号：JP27094098
申请日：1998-09-25
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： AOTA MASAO , YAMAZAKI SABURO , MASUMOTO TSUTOMU , MABUCHI YASUHIRO
IPC分类号： G01N29/04 , G01N29/07 , G01N29/10
摘要： PROBLEM TO BE SOLVED: To realize a method whereby a flaw detection for a fillet weld part can be more easily conducted and the internal defect can be detected, evaluated by carrying out the flaw detection by utilizing a transversal wave generated from a creeping wave probe and a secondary creeping wave generated through a mode transform of the transversal wave at the bottom face. SOLUTION: When an ultrasonic wave is inputted to a fillet weld part 3 by a creeping wave probe (referred to as a probe hereinafter), a part of the wave is turned to a secondary creeping wave 4c through a mode transform from a transversal wave 4b at the bottom face and reflected by an incomplete penetration corner part. The reflected ultrasonic wave is received by the probe 1, amplified and detected by an ultrasonic flaw detector 18 and sent to a data- collecting/processing apparatus 19. The probe 1 is pressed by a driving apparatus 17 to a piping flaw detect face to scan a piping joint in the whole circumferential and axial directions. The collected data are processed by the data-collecting/ processing apparatus 19 after the flaw detection is completed. The data are analyzed on the basis of a detection echo and a position of the probe when detecting the defect. A state of the defect is judged and a fatigue fracture or the like is analyzed for the progress direction.

3. 发明专利

JP2002071332A PROBE FOR MEASUREMENT THICKNESS OF CLAD STEEL PLY MATERIAL 失效
公开(公告)号：JP2002071332A
公开(公告)日：2002-03-08
申请号：JP2000261569
申请日：2000-08-30
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： IKEDA KAZUTOSHI , KATO MASAYUKI , MABUCHI YASUHIRO , YAMAZAKI SABURO
IPC分类号： G01B17/02 , G01N29/24
摘要： PROBLEM TO BE SOLVED: To provide a probe for the measurement of the thickness of a clad steel ply material, with which the thickness of a multilayer piled ply material can be measured with satisfactory accuracy, by reducing the influence due to reflected echoes from a part between layers of the ply material. SOLUTION: A vibrator 2 for transmission and a vibrator 3 for reception are arranged on a wedge face 4, at an angle (i) at which the reflected echo is efficiently converted into transverse waves with on a flaw detection face 11. The interprobe distance L between the vibrator 2 and the vibrator 3 is set at a distance, which is smaller than interval L2 found geometrically.

4. 发明专利

JPH06331610A ULTRASONIC PROBE UNIT 失效
公开(公告)号：JPH06331610A
公开(公告)日：1994-12-02
申请号：JP11951993
申请日：1993-05-21
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： YAMAZAKI SABURO , AIZAWA TSUGUNORI , KAKINUMA YUKIO
IPC分类号： G01N29/26
摘要： PURPOSE:To favorably detect a flaw not only on a flat part of the surface of an article to be inspected but also an irregular part by vertically sliding an ultrasonic probe and by pressing the probe on the surface of the article to be inspected. CONSTITUTION:An ultrasonic probe 2 is held on a unit with a cover 4 and a holder 6, and repulsion by compression of a spring 3 provided between a spring receiver 7 and the cover 4 of the probe 2 presses the probe 2 onto an article to be inspected 1 so that it follows the irregularity of the article to be inspected 1. A supply port 1 facilitates inflow and holding by a groove 10 of a contact medium led to the neighborhood of the probe 2, a key 5 stops rotation of the probe 2 in the radial direction with combination with a key way of the holder 6 and enables vertical sliding. Also, a shoe 9 whose contact face is machined according to the piping diameter of the article to be inspected 1 facilitates mounting on the piping. Thus, the probe 2 is made into a unit, and a pressing force, inclination of the contact face and contact medium supply amount can be made as prescribed by pressing with the spring, etc., and then, ultrasonic flaw detection can be done favorably even on the irregular face of the article to be inspected 1.

5. 发明专利

JPH01162145A ULTRASONIC PROBE 失效
公开(公告)号：JPH01162145A
公开(公告)日：1989-06-26
申请号：JP31885387
申请日：1987-12-18
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： YAMAZAKI SABURO , KAKINUMA YUKIO , KUMASAKA KENJI , KANDA KIMIO , TAKAKU KAZUO
IPC分类号： G01N29/24 , G01N29/04
摘要： PURPOSE:To achieve a flaw detection by vertical and skew beams simultaneously, by arranging vibrators in a double split structure so that the vibrators are used as divided in two for vertical beam operation while two vibrators sandwiching a sound shielding plate are electrically connected in parallel to create a single detection characteristic for angle beam operation. CONSTITUTION:Vibrators 3-8 are arranged in a double split structure. For angle beam operation, two each of vibrators 5, 6, 7 and 8 are electrically connected together in parallel to create a single detection characteristic with simultaneous transmission and reception. For vertical beam operation, the vibrators 3 and 4 are normally divided into two pairs, one for transmission as vibrator 3 and the other for reception as vibrator 4. Sound fields of the vibrators 5-8 for angle beam operation are synthesized when the two vibrators are vibrated individually. The vibrators are arranged at the center as much as possible and the range thereof is adjusted to a proper value according to the frequency of the vibrators. When one vibrator is excited, directivity is regulated to an appropriate expanse thereby optimizing the directivity of a synthetic sound field when two vibrators are excited.

6. 发明专利

JP2003194730A REMOTE VISUAL INSPECTION APPARATUS 审中-公开
公开(公告)号：JP2003194730A
公开(公告)日：2003-07-09
申请号：JP2001400553
申请日：2001-12-28
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： KOSHIRAE MITSUO , YAMAZAKI SABURO
IPC分类号： G01N21/954
摘要： PROBLEM TO BE SOLVED: To provide a small and simple remote visual inspection apparatus which is operated simply, which can be passed easily through even a narrow part, and in which a fear that a limit is generated in a part to be inspected is small. SOLUTION: A pumping system 1 is suspended from a hoist 2 by a rope 3, an inspection head 6 is suspended from the pumping system 1 by a hose 5 which is rich in flexibility, pressurized water is supplied to a jet nozzle 9 at the inspection head 6 from a pump 4, the water which is jetted from the jet nozzle 9 is controlled by a solenoid valve 11, the hose 5 is bent, and a direction and a position of the inspection head 6 can be changed. A television camera 7 is mounted on the inspection head 6, an image signal is supplied to a monitor 14 from a camera controller 13 via a cable 12, an image of the part to be inspected is displayed, and a visual inspection can be performed. COPYRIGHT: (C)2003,JPO

7. 发明专利

JP2002005906A CYLINDRICAL BODY SURFACE INSPECTION DEVICE 失效
公开(公告)号：JP2002005906A
公开(公告)日：2002-01-09
申请号：JP2000183543
申请日：2000-06-19
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： YAMAZAKI SABURO , KIMURA YUTAKA , TSUCHIDA YOSHIO
IPC分类号： G01N29/04 , G01N29/07 , G01N29/24 , G01N29/10
摘要： PROBLEM TO BE SOLVED: To provide a cylindrical body surface inspection device capable of distinguishing a reflected wave from a defect from a reflected noise and having excellent defect discriminability. SOLUTION: A flaw detector 10 transmits ultrasonic pulse signals to a rolling roll RO which is an inspection object, sequentially from plural piezoelectric transducers 42-1, 42-2,..., 42-4. The flaw detector 10 controls ultrasonic wave transmission/reception by a probe 42, and extracts flaw detection data from received ultrasonic signals. A computer 20 records the ultrasonic signal received by the probe 42 in a recorder 50 independently relative to each piezoelectric transducer.

8. 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.

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

JP2003194789A PROBE SHOE FOR ULTRASONIC FLAW DETECTION AND METHOD FOR HOLDING CONTACT MEDIUM 审中-公开
公开(公告)号：JP2003194789A
公开(公告)日：2003-07-09
申请号：JP2001391144
申请日：2001-12-25
申请人： HITACHI ENG CO LTD
发明人： MASHIMA TADASHI , YAMAZAKI SABURO
IPC分类号： G01N29/28
摘要： PROBLEM TO BE SOLVED: To supply a contact medium for the location of incidence of ultrasonic waves in a gap between a probe shoe and a body to be tested not via packing members, and to stably hold it in the case of ultrasonic flaw detection by a local water method or a gap method. SOLUTION: A probe mounting unit 1 is constituted of a wedge house in a probe housing 5, a probe constituted of an oscillator for transmitting and receiving ultrasonic waves, etc., and the probe shoe 8 provided between the probe and the body to be tested for transmitting an ultrasonic signal from the probe to the body to be tested. Further, the unit 1 is constituted of a contact medium supplying means for making the ultrasonic waves incident onto the body to be tested, a means for maintaining a constant amount of gap between the surface of the body to be tested and the probe shoe, an air curtain discharge means provided for a shoe contact surface of an outer circumferential part surrounding a point onto which the ultrasonic waves become incident in the body to be tested, and an air curtain suction means provided for a shoe contact surface of an inner circumferential part between the point onto which the ultrasonic waves become incident in the body to be tested and the outer circumferential part. COPYRIGHT: (C)2003,JPO

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