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Method and apparatus for monitoring cracks of a rotatable body 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G01N-029/04
출원번호 US-0681576 (1984-12-14)
우선권정보 JP-0034414 (1982-03-03)
발명자 / 주소
  • Sato Kazuo (Kitaibaraki JPX) Shiohata Kouki (Ohmiya JPX) Matsushita Osami (Tomobe JPX) Kikuchi Katsuaki (Tsuchiura JPX) Takasumi Masakazu (Juoh JPX) Sato Ichiya (Hitachi JPX) Kaneko Ryoichi (Hitachi
출원인 / 주소
  • Hitachi, Ltd. (Tokyo JPX 03)
인용정보 피인용 횟수 : 20  인용 특허 : 7

초록

A method and apparatus for monitoring cracks of a rotatable body by detecting cracks by measuring accoustic emission signals and evaluating the depth of cracks from the result of the comparison of assumed vibrations of the rotatable body and its measured vibrations. By this method and apparatus not

대표청구항

An apparatus for monitoring cracks of a rotatable body comprising a first pair of accoustic emission detectors attached to the rotatable body, a second pair of accoustic emission detectors attached to the bearings of the rotatable body, means for detecting cracks by extracting accoustic emission sig

이 특허에 인용된 특허 (7)

  1. Darrel Bernard (Schenectady NY) Czechowski ; III Joseph (Schenectady NY), Acoustical defect detection system.
  2. Nagai Isao (Kobe JPX) Wada Kenzo (Ashiya JPX), Apparatus for diagnosing abnormalities in rotating machines.
  3. Matsushita, Osami; Satoh, Motohiro; Hioki, Susumu; Kikuchi, Katsuaki; Izumi, Shigeru, Device for identifying rubbing locations in rotating machines.
  4. Shima Ichiji (Kansai Electric Power Company Incorporated ; Sohgo Gijyutsu Kenkyusho ; No. 1 Nakohji Ichinotsubo ; Amagasaki-shi ; Hyogo-ken JPX) Teshima Hiroshi (Kansai Electric Power Company Incorpo, Judging system for detecting failure of machine.
  5. Kurihara Nobuo (Hitachiota JPX) Nishikawa Mitsuyo (Hitachi JPX) Nagahashi Yoshitoshi (Hitachi JPX) Takechi Masafumi (Hitachi JPX), Method of diagnosing vibration of rotary machine.
  6. Imam, Imdad; Bernd, Leslie H., On-line rotor crack detection.
  7. Shiohata Koki (Ibaraki JPX) Fujisawa Fumio (Mito JPX) Shiga Motohiro (Hitachi JPX) Sato Kazuo (Kitaibaraki JPX) Ohmori Motoji (Hitachi JPX) Takasumi Masakazu (Ibaraki JPX), Vibration diagnosing method and apparatus for a rotary machine.

이 특허를 인용한 특허 (20)

  1. Remi Rothea FR; Etienne Foucher FR, Acoustic emission monitor, method and memory media for solid material processing machinery.
  2. Schoess Jeffrey Norman, Acoustic fault injection tool.
  3. Ronald Thomas Harrold ; Zal N. Sanjana, Acoustic waveguide sensing the condition of components within gas turbines.
  4. Shepherd James E. (3001 Charwood Pl. Raleigh NC 27612), Data acquisition device for balancing rotating components of large machinery.
  5. Pascu, Victor; Francisco, Jay M., Engine noise monitoring as engine health management tool.
  6. Sakurai Shigeo (Hitachi JPX) Umezawa Sadao (Mito JPX) Usami Saburo (Hitachi JPX) Miyata Hiroshi (Mito JPX) Toriya Hajime (Hitachi JPX) Tsubouchi Kuniyoshi (Mito JPX) Kaneko Ryoichi (Hitachi JPX), Method and apparatus for estimating life expectancy of mechanical structures.
  7. Nishimura, Nobuhiko; Iwamoto, Keiichi; Yamauchi, Masafumi; Tokiyoshi, Takumi; Hashimoto, Takao; Fujita, Masaaki; Imamoto, Toshihiko, Method and apparatus for evaluating damage of metal material.
  8. Nishimura, Nobuhiko; Iwamoto, Keiichi; Yamauchi, Masafumi; Tokiyoshi, Takumi; Hashimoto, Takao; Fujita, Masaaki; Imamoto, Toshihiko, Method and apparatus for evaluating damage of metal material.
  9. Nishimoto Shigeto (Osaka JPX) Saegusa Tomoyuki (Osaka JPX) Fujimoto Yoshiki (Osaka JPX), Method and apparatus for predicting destruction of a rolling bearing.
  10. Kinzie, Kevin W.; Shieh, Chingwei M.; Lee, Dongjai, Method and system for detecting a crack on a turbomachine blade.
  11. Comperat, Patrick; Even, Philippe, Method and system for detecting damage to the rotor of an aircraft engine.
  12. Colter ; Jr. Leslie G. ; Katz David C. ; Rizzo Frank E., Method and system for detection and prevention of stress corrosion cracking in buried structures.
  13. Brummel,Hans Gerd Johann; Landi,William Alexander; Lemieux,Dennis; Twerdochlib,Michael; Masticola,Stephen Price, Method of visually inspecting turbine blades and optical inspection system therefor.
  14. Schoess Jeffrey N., Remote self-powered structure monitor.
  15. Schoess Jeffrey N., Remote self-powered structure monitor.
  16. Schoess Jeffrey N., Remote self-powered structure monitor.
  17. Takahashi, Eiji; Araki, Kaname; Takaki, Shugo; Matsumoto, Yasuharu, Rotating machine abnormality detection device and method and rotating machine.
  18. Miller William H. (Albany NY) Brook Warren R. (Medford NJ), Shaft crack detection method.
  19. Tralshawala, Nilesh; D'Souza, Prashanth; Yoganatha Babu, Ravi, System and method for monitoring component health using resonance.
  20. Lanning, Bruce R.; Light, Glenn M.; Hudak, Jr., Stephen J.; Moryl, James A., Systems and methods for flaw detection and monitoring at elevated temperatures with wireless communication using surface embedded, monolithically integrated, thin-film, magnetically actuated sensors, and methods for fabricating the sensors.
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