Title:
METHOD FOR MEASUREMENT OF VIBRATION PROPERTY OF STRUCTURE, AND VIBRATION PROPERTY MEASUREMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/158503
Kind Code:
A1
Abstract:
A method for measuring a vibration property of a structure by applying an impulse input to the structure, which comprises: step (A) of pulse-irradiating the surface of the structure or a part adjacent to the surface with a laser beam to apply an impulse input to the structure and measuring a response output from the structure to which the impulse input has been applied; step (B) of determining the relationship between the laser intensity of the laser beam and the impulse input induced by the laser beam by a rigid pendulum method and determining an impulse input (F) corresponding to the laser intensity of the laser beam, with which the structure has been pulse-irradiated, based on the relationship; and step (C) of measuring the vibrational amplitude value of frequency response of the structure from the response output measured in step (A) and the impulse input (F) measured in step (B).
Inventors:
KAJIWARA ITSURO
HOSOYA NAOKI
HOSOYA NAOKI
Application Number:
PCT/JP2011/003412
Publication Date:
December 22, 2011
Filing Date:
June 15, 2011
Export Citation:
Assignee:
UNIV HOKKAIDO NAT UNIV CORP (JP)
SHIBAURA INST TECHNOLOGY (JP)
KAJIWARA ITSURO
HOSOYA NAOKI
SHIBAURA INST TECHNOLOGY (JP)
KAJIWARA ITSURO
HOSOYA NAOKI
International Classes:
G01M7/00; G01M99/00
Foreign References:
| JP2005338063A | 2005-12-08 |
Other References:
NAOKI HOSOYA ET AL.: "Vibration Testing by Using Laser Ablation : Improvement of Accuracy in FRF measurement", DYNAMICS AND DESIGN CONFERANCE 2009 CD-ROM RONBUNSHU, August 2009 (2009-08-01), pages 604, XP008167264
KEIICHI AOKI ET AL.: "Laser Ablation ni yoru Hishotai Suishin no Koritsuka", AEROSPACE NUMERICAL SIMULATION SYMPOSIUM 2001 RONBUNSHU, January 2002 (2002-01-01), pages 245 - 250, XP008167277
NAOKI HOSOYA, ITSURO KAJIWARA, HITOSHI SORIMACHI,: "Vibration Testing Based on Impulse Response Excited by Laser Ablation", COLLECTED PAPERS OF JAPAN SOCIETY OF MECHANICAL ENGINEERS (EDITION C), vol. 75, no. 760, pages 3160 - 3167
KEIICHI AOKI ET AL.: "Laser Ablation ni yoru Hishotai Suishin no Koritsuka", AEROSPACE NUMERICAL SIMULATION SYMPOSIUM 2001 RONBUNSHU, January 2002 (2002-01-01), pages 245 - 250, XP008167277
NAOKI HOSOYA, ITSURO KAJIWARA, HITOSHI SORIMACHI,: "Vibration Testing Based on Impulse Response Excited by Laser Ablation", COLLECTED PAPERS OF JAPAN SOCIETY OF MECHANICAL ENGINEERS (EDITION C), vol. 75, no. 760, pages 3160 - 3167
Attorney, Agent or Firm:
WASHIDA, KIMIHITO (JP)
Koichi Washida (JP)
Koichi Washida (JP)
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Claims:
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