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1. 发明专利

JPH09166578A EXAMINATION METHOD FOR BROKEN PART OF STEEL FRAME 失效
公开(公告)号：JPH09166578A
公开(公告)日：1997-06-24
申请号：JP32552495
申请日：1995-12-14
申请人： ASUPEKUTO KK , OHBAYASHI CORP
发明人： TAKEDA AKIRA , FURUYA KATSUHIKO , FUJITANI YOSHIO , KUROKI TERUO , OTSUKA HIDEO
IPC分类号： G01N27/82
摘要： PROBLEM TO BE SOLVED: To examine the presence of a broken part of a steel frame just after a great earthquake without the need of a work for peeling a fire resistance coating. SOLUTION: A sensor 10 having a current-applied coil 11 is held to steel frames 2, 3 with a fire resistance coating 4 in such a manner that the winding direction of the coil 11 is directed to the in-plane in the longitudinal direction of the steel frame 3 or the in-plane in the direction intersecting perpendicularly to the longitudinal direction, and the sensor 10 is moved and scanned in the longitudinal directions of the steel frames 2, 3 with a fire resisting coating. According to the change of measured value of a measuring device 13 for voltage or current of the coil 11 at that time, the part of the steel frames 2, 3 where a broken part 6 exists can be located.

2. 发明专利

JPH08248012A ULTRASONIC INSPECTION SYSTEM FOR LEAD SHEATHED PIPE 失效
公开(公告)号：JPH08248012A
公开(公告)日：1996-09-27
申请号：JP4742595
申请日：1995-03-07
申请人： HITACHI CABLE , ASUPEKUTO KK
发明人： ABE KEIZO , KIMURA TADASHI , TSUTSUI TAKASHI , NOZAWA HIDEYUKI , TAKEDA AKIRA , FURUYA KATSUHIKO , KUGE MIKIO , SHIBA AKIO
IPC分类号： G01N29/04 , G01N29/10
摘要： PURPOSE: To obtain an ultrasonic inspection system for lead sheathed pipe having no beam path difference over the entire surface of ultrasonic probe. CONSTITUTION: In an ultrasonic inspection system for lead sheathed pipe in which an ultrasonic wave is radiated from the ultrasonic wave radiation surface 20 of an ultrasonic probe 1 disposed on the outside of a lead sheathed pipe 10 and the reflected wave therefrom is detected, the ultrasonic wave radiation surface 20 is directed radially inward of the lead sheathed pipe 10 while inclining in the axial direction thereof and the ultrasonic wave radiation surface 20 is curved such that a constant distance is kept with respect to the outer circumferential circle 23 of the lead sheathed pipe 10.

3. 发明专利

JP2749021B2 失效
公开(公告)号：JP2749021B2
公开(公告)日：1998-05-13
申请号：JP31148291
申请日：1991-10-31
申请人： HITACHI DENSEN KK , ASUPEKUTO KK
发明人： TANAMURA KOJI , ABE KEIZO , SATO NORIO , SASAKI TOMOMICHI , TAKEDA AKIRA , FURUYA KATSUHIKO , KUGE MIKIO
IPC分类号： G01N29/04 , G01N29/10

4. 发明专利

JPH05126803A AUTOMATIC ULTRASONIC FLAW DETECTING APPARATUS 失效
公开(公告)号：JPH05126803A
公开(公告)日：1993-05-21
申请号：JP31148291
申请日：1991-10-31
申请人： HITACHI CABLE , ASUPEKUTO KK
发明人： TANAMURA KOJI , ABE KEIZO , SATO NORIO , SASAKI TOMOMICHI , TAKEDA AKIRA , FURUYA KATSUHIKO , KUGE MIKIO
IPC分类号： G01N29/04
摘要： PURPOSE:To perform automatic detection of minute defects, foreign matters and the like in the inside and the surface of a metal sheath tube by arranging ultrasonic flaw detecting pieces so that the sum of the flaw detecting ranges of the metal sheath tube with the ultrasonic flaw detecting probes covers the entire circumference of the metal sheath tube. CONSTITUTION:Ultrasonic flaw detecting probes 2 are arranged under the state of the constant incident angle and incident path for the surface of the ultrasonic waves with respect to the surface of an aluminum tube 1. An ultrasonic wave 3, which is emitted from each flaw detecting probes 2, enters into the inside of the tube 1 after the propagation in the water. The ultrasonic wave is reflected from the surface of the flaw detecting piece 2 in halfway, foreign matterns, defects and the like in the surface and the inside of the pipe 1, and the echo waves are generated. The flaw detecting probes 2 repeat the emission of the ultrasonic wave and the reception of the echo waves at a high speed. An ultrasonic flaw detection controller 5 controls the emission of the ultrasonic wave and the reception of the echo waves with the respective flaw detecting probes 2, detects the foreign matterns, the defects and the like in the inside and the surface of the tube 1 and outputs detected signals 6 of the foreign matters, the defects and the like to a controller 31.

5. 发明专利

JPH08219749A METHOD AND EQUIPMENT FOR MEASURING GAP AT BOTTOM OF SOCKET 失效
公开(公告)号：JPH08219749A
公开(公告)日：1996-08-30
申请号：JP4785495
申请日：1995-02-13
申请人： HITACHI PLANT ENG & CONSTR CO , ASUPEKUTO KK
发明人： ISHII SUEJI , SUZUKI HIROSHI , MIURA HARUKI , TAKEDA AKIRA , KUGE MIKIO
IPC分类号： G01B17/00 , G01B21/16
摘要： PURPOSE: To measure the gap between the tip of piping inserted into a socket and the bottom part on the socket side non-destructively. CONSTITUTION: The equipment for measuring the gap between the bottom part 11 of a socket and the forward end face 21 of piping in a structure where the piping 20 is inserted into the socket 10 comprises a pair of ultrasonic probes 60 having a gap of known dimensions secured to a reference scale 40. One of the pair of ultrasonic probes can touch the surface of the piping while the other can touch the surface of the socket. The ultrasonic probe touching the piping serves as a surface wave probe 60 producing a surface wave whereas the ultrasonic probe touching the socket serves as a longitudinal wave or oblique angle probe 50 producing a longitudinal wave. An operating means operates the gap at the bottom 11 of the socket based on the detection signals from the probes 50, 60 and the positions thereof on the reference scale 40. The gap can be calculated easily by subtracting each detected dimension from the fixed dimension L between the probes 50, 60.

6. 发明专利

JPH03175354A AUTOMATIC ULTRASONIC FLAW DETECTION METHOD AND APPARATUS 失效
公开(公告)号：JPH03175354A
公开(公告)日：1991-07-30
申请号：JP31492989
申请日：1989-12-04
申请人： ASUPEKUTO KK
发明人： TAKEDA AKIRA , KUGE MIKIO
IPC分类号： G01N29/26
摘要： PURPOSE:To prevent the generation of inspection irregularity and to shorten an inspection time by detecting an abnormal place while the entire inspection range of a material to be inspected is subjected to square scanning at a coarse pitch. CONSTITUTION:In the first square scanning, the entire inspection range of a material 12 to be inspected is rapidly scanned at a coarse pitch P2. During this scanning, an abnormal place 36 is detected by an ultrasonic flaw detector 15 and specified on the basis of the indication signal of the abnormal place and the position data from a positioning control part 17 and the position data is stored in a position data memory part 18 each time. When the square scanning at the coarse pitch P2 is completed, an ultrasonic probe 11 is returned to the periphery of the abnormal place 37 on the basis of the position data of the memory part 18 and, at first, when the abnormal place 37 is caused by the contact inferiority of the material 12 to be inspected and the probe 11 or the coating inferiority of a contact medium 13, the periphery of the abnormal place 37 is again subjected to square scanning at the coarse pitch P2. When the abnormal place 37 is caused by the flaw of the material 12 to be inspected, the appropriate range thereof is further subjected to detailed square scanning at a dense pitch P1.

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