JPS5444579A - Vibration measuring method by pulse laser holography - Google Patents

Vibration measuring method by pulse laser holography

Info

Publication number
JPS5444579A
JPS5444579A JP11106077A JP11106077A JPS5444579A JP S5444579 A JPS5444579 A JP S5444579A JP 11106077 A JP11106077 A JP 11106077A JP 11106077 A JP11106077 A JP 11106077A JP S5444579 A JPS5444579 A JP S5444579A
Authority
JP
Japan
Prior art keywords
measuring object
pulse laser
hologram
modes
laser light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP11106077A
Other languages
Japanese (ja)
Other versions
JPS5826528B2 (en
Inventor
Masayoshi Murata
Masahiro Kuroda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP11106077A priority Critical patent/JPS5826528B2/en
Publication of JPS5444579A publication Critical patent/JPS5444579A/en
Publication of JPS5826528B2 publication Critical patent/JPS5826528B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Holo Graphy (AREA)

Abstract

PURPOSE: To obtain the modes and relative phases of vibration modes togeter with the information on amplitude distribution and perform accurate analysis of modes by reflecting two shots of illuminating rays of double pulse laser with a rotary reflecting means and projecting the same to the measuring object from different angles.
CONSTITUTION: In making a hologram by projecting the pulse laser light emitted from a double pulse laser device 1 to the measuring object 11, a rotary reflecting mirror 23 is provided between a beam splitter 2 and the measuring object 11 and two shots of illuminating rays are reflected while this rotary reflecting mirror 23 rotates to project the rays to the measuring object from respectively differnt angles. Here, the measuring object 11 is vibrated by an exciter 16 and the first shot of the radiated there to in a vibration zero state while it is being monitored with an oscillo- scope 13. the angle of the illumination light is changed in various ways in the exposure of a photographic plate 8 so that interference fringes appear in the hologram reconstruction image. At the time of emitting the second shot of laser light, the rotary plane mirror 23 is made at a different angle and the laser light is raidated to the measuring object 11 in the maximum negative amplitude state and is exposed simultaneously to the photographic plate 8, whereby the hologram is obtained.
COPYRIGHT: (C)1979,JPO&Japio
JP11106077A 1977-09-14 1977-09-14 Vibration measurement method using pulsed laser holography Expired JPS5826528B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11106077A JPS5826528B2 (en) 1977-09-14 1977-09-14 Vibration measurement method using pulsed laser holography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11106077A JPS5826528B2 (en) 1977-09-14 1977-09-14 Vibration measurement method using pulsed laser holography

Publications (2)

Publication Number Publication Date
JPS5444579A true JPS5444579A (en) 1979-04-09
JPS5826528B2 JPS5826528B2 (en) 1983-06-03

Family

ID=14551375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11106077A Expired JPS5826528B2 (en) 1977-09-14 1977-09-14 Vibration measurement method using pulsed laser holography

Country Status (1)

Country Link
JP (1) JPS5826528B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57110926A (en) * 1980-12-27 1982-07-10 Hino Motors Ltd Holography image pickup device
JPS57110925A (en) * 1980-12-27 1982-07-10 Hino Motors Ltd Holography image pickup device
JPS57198835A (en) * 1981-05-30 1982-12-06 Mitsubishi Heavy Ind Ltd Measuring method for oscillation by pulse holography

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57110926A (en) * 1980-12-27 1982-07-10 Hino Motors Ltd Holography image pickup device
JPS57110925A (en) * 1980-12-27 1982-07-10 Hino Motors Ltd Holography image pickup device
JPS57198835A (en) * 1981-05-30 1982-12-06 Mitsubishi Heavy Ind Ltd Measuring method for oscillation by pulse holography

Also Published As

Publication number Publication date
JPS5826528B2 (en) 1983-06-03

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