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1. 发明专利

JPH0980027A APPARATUS AND METHOD FOR FLAW DETECTION OF FERROMAGNETIC PIPE 失效
公开(公告)号：JPH0980027A
公开(公告)日：1997-03-28
申请号：JP23646495
申请日：1995-09-14
申请人： CHUBU ELECTRIC POWER , KAWASAKI HEAVY IND LTD
发明人： WATANABE YASUTAKA , ONDA KATSUHIRO , SHINDO YOSHIHISA , NAKAMURA YASUMASA
IPC分类号： G01N27/90
摘要： PROBLEM TO BE SOLVED: To provide an apparatus and a method in which a flaw in all parts of a measuring part can be detected surely by either a backward inspection or a forward inspection even when the outside of a pipe to be inspected is provided with a part strongly affecting the magnetic path of a line of magnetic force such as a baffle, support metal fittings or the like. SOLUTION: An eddy-current flow detection apparatus by a remote field method is inserted into a ferromagnetic pipe to be inspected, and a nondestructive inspection is performed. In the eddy-current flaw detection apparatus, a detection part is constituted of one set of detection coils 3 and of two sets of exciting coils 1, 2 which are excited by an AC current which has amplified an AC current by an identical oscillation source. In the two sets of exciting coils 1, 2, one set each are arranged on both sides in the pipe axial direction of the set of detection coils 3 at distances about twice or higher the pipe diameter of the pipe, to be inspected, from the detection coils 3 and by keeping equal distances. In the two sets of exciting coils 1, 2, the coils are wound in the same number of turns in such a way that electromagnetic waves generated by the coils are symmetric with respect to the detection coils 3, the connection of respective terminals or the winding direction of the coils is selected, and signals from the detection coils 3 are connected to a flaw detector body.

2. 发明专利

JPH08278289A FLAW DETECTION DEVICE AND METHOD FOR FERROMAGNETIC TUBE 失效
公开(公告)号：JPH08278289A
公开(公告)日：1996-10-22
申请号：JP7913195
申请日：1995-04-04
申请人： KAWASAKI HEAVY IND LTD , CHUBU ELECTRIC POWER
发明人： SHINDO YOSHIHISA , NAKAMURA KIYOUSEI , WATANABE YASUTAKA , ONDA KATSUHIRO
IPC分类号： G01N27/83 , G01N27/90
摘要： PURPOSE: To quickly and accurately detect the defective part of a ferromagnetic tube by mounting a leakage magnetic flax method detection part and a remote field method detection part to a flaw detection probe in series while they can keep a specific distance. CONSTITUTION: A leakage magnetic flux method part 1 is constituted by mounting an exciting coil 3 excited by DC current to the tip part of a bobbin 14 placed at one edge of a cable 7 and placing a detection coil 4 at the center part of N and S poles which are magnetized to the coil 3. Then a remote field method part 2 is constituted by placing an exciting coil 5 excited by AC current at the rear part of the magnetic flux detection method 1 and placing a detection coil 6 between the coil 5 and the magnetic flux method 1. At this time, both method parts 1 and 2 should be spaced so that no measurement error occurs due to the mutual interference of the coils 3 and 5. Then, a probe 11 is inserted to the deepest part of a tube 8 to be inspected without supplying electricity to both method parts 1 and 2, DC current is applied to the coil 3, AC current is applied to the coil 5, and the probe 11 is slowly pulled out of the tube 8 for detecting flaw.

3. 发明专利

JP2014115220A Strain/stress measuring method of structure and strain/stress sensor 有权
标题翻译：结构和应变/应力传感器的应变/应力测量方法
公开(公告)号：JP2014115220A
公开(公告)日：2014-06-26
申请号：JP2012270379
申请日：2012-12-11
申请人： Japan Fine Ceramics Center , 一般財団法人ファインセラミックスセンター , Chubu Electric Power Co Inc , 中部電力株式会社
发明人： OKUHARA YOSHIKI , MIZUTA YASUTOSHI , NAMBARA KENICHI , WATANABE YASUTAKA
IPC分类号： G01B11/16 , C04B35/10 , C09K11/00 , C09K11/64 , G01L1/00
摘要： PROBLEM TO BE SOLVED: To provide a noncontact-type strain/stress measuring method capable of measuring the strain or stress in static and dynamic pulling/compression directions with high accuracy, and determining each directionality thereof, or the like.SOLUTION: A strain/stress sensor 10 including an oxide-based ceramics sintered body formed by adding 0.1-3.0 atom% (preferably 0.5-1.5 atom%) of Cr to SrAlO(X=0.02-2.0), in which an emission wavelength, when irradiating excitation light fluctuates according to the intensity of a strain/stress, and a fluctuation direction of the emission wavelength is different according to the direction of the strain/stress, is installed on a structure 1. The strain/stress sensor 10 is irradiated with an exciting light 11 to undergo fluorescence emission 12, and the emission wavelength is measured by a wavelength measuring means; and emission wavelength change with respect to a reference emission wavelength, when a strain is not generated in the structure, and its direction are measured, to thereby measure the strain or the stress generated in the structure 1, and to determine its directionality.
摘要翻译：要解决的问题：提供一种能够高精度地测量静态和动态牵引/压缩方向上的应变或应力的非接触式应变/应力测量方法，并且确定其各自的方向等。解决方案：应变/ 包含氧化物系陶瓷烧结体的应力传感器10，其中，当照射激发光时发射波长波动时，通过向SrAlO（X = 0.02-2.0）中加入0.1-3.0原子％（优选0.5-1.5原子％）的Cr 根据应变/应力的强度，发射波长的波动方向根据应变/应力的方向而不同，安装在结构1上。应变/应力传感器10用激发光11 进行荧光发射12，发射波长用波长测量装置测量; 并且当结构中不产生应变并测量其方向时，发射波长相对于参考发射波长发生变化，从而测量结构1中产生的应变或应力，并确定其方向性。

4. 发明专利

JP2014115219A Strain/stress measuring method of structure and strain/stress sensor 有权
标题翻译：结构和应变/应力传感器的应变/应力测量方法
公开(公告)号：JP2014115219A
公开(公告)日：2014-06-26
申请号：JP2012270369
申请日：2012-12-11
申请人： Japan Fine Ceramics Center , 一般財団法人ファインセラミックスセンター , Chubu Electric Power Co Inc , 中部電力株式会社
发明人： OKUHARA YOSHIKI , MIZUTA YASUTOSHI , NAMBARA KENICHI , WATANABE YASUTAKA
IPC分类号： G01B11/16 , C09K11/64 , G01L1/00
摘要： PROBLEM TO BE SOLVED: To provide a noncontact-type strain/stress measuring method capable of measuring the strain or stress in static and dynamic pulling/compression directions with high accuracy, and determining each directionality thereof.SOLUTION: A strain/stress sensor including an oxide-based ceramics formed by adding 0.1-10 atom% (preferably 0.3-6.0 atom%) of Mn to AlO, in which an emission wavelength, when irradiating excitation light, fluctuates according to the intensity of a strain/stress, and a fluctuation direction of the emission wavelength is different according to the direction of the strain/stress, is installed on a structure. The strain/stress sensor is irradiated with an exciting light to undergo fluorescence emission, and the emission wavelength is measured by wavelength measuring means; and an amount and direction of emission wavelength change with respect to a reference emission wavelength, when a strain/stress does not act on the structure, are measured, to thereby measure the static or dynamic strain or stress generated in the structure, and to determine its directionality. The strain/stress sensor can be a bulk body formed by sintering the oxide-based ceramics.
摘要翻译：要解决的问题：提供一种能够以高精度测量静态和动态牵引/压缩方向上的应变或应力的非接触式应变/应力测量方法，并确定其各自的方向性。解决方案：应变/应力传感器包括通过向AlO中添加0.1〜10原子％（优选为0.3〜6.0原子％）的Mn而形成的氧化物系陶瓷，其中，当照射激发光时的发光波长根据应变/应力的强度而波动发射波长的方向根据应变/应力的方向而不同，安装在结构上。用激发光照射应变/应力传感器进行荧光发射，并通过波长测量装置测量发射波长; 并且当应变/应力不作用于结构时，发射波长的量和方向相对于参考发射波长变化，从而测量在结构中产生的静态或动态应变或应力，并且确定其方向性。应变/应力传感器可以是通过烧结氧化物基陶瓷形成的体体。

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