JPS5444579A - Vibration measuring method by pulse laser holography - Google Patents
Vibration measuring method by pulse laser holographyInfo
- 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
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
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)
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 |
-
1977
- 1977-09-14 JP JP11106077A patent/JPS5826528B2/en not_active Expired
Cited By (3)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3899921A (en) | Method and apparatus for testing an object | |
US4277127A (en) | Dopler extended depth of field imaging system with coherent object illumination | |
JPS6413403A (en) | Interference length measuring apparatus | |
JPS5444579A (en) | Vibration measuring method by pulse laser holography | |
US3778130A (en) | Hologram formation with a speckle reference point source | |
US3797938A (en) | Optical apparatus for measuring deformation of parabolic antennas | |
US3606519A (en) | Multiple image storing system for high speed projectile holography | |
US3934461A (en) | Multiple exposure holographic interferometer method | |
US4428675A (en) | Method of and apparatus for double-exposure holographic interferometry | |
GB2212040A (en) | Light aiming device for medical or dental X-ray equipment | |
US3445855A (en) | Method and apparatus of holographic plotting | |
US4205917A (en) | Method of utilizing interferometric information from two different holograms exposed with short interval | |
JP2770984B2 (en) | Illumination apparatus, projection exposure apparatus, and element manufacturing method | |
Fryer | Inexpensive system for live stroboscopic holographic interferometry | |
US4577103A (en) | Method and apparatus for high speed, sustained recording of infrared laser beam patterns | |
SU1551989A1 (en) | Method of checking the shape of reflecting surface of mirror reflectors | |
JPS60190818A (en) | Hologram preparing method | |
JPS54146650A (en) | Hologram reproducing device | |
JPS56118609A (en) | Measuring method for azimuth angle of magnetic head | |
Asai | Contouring method by parallel light moire holography | |
Gates | Holographic Methods of Visualization and Measurement in Engineering | |
RU2194256C1 (en) | Autocorrelator of luminous pulses | |
SU1128111A1 (en) | Interferention device for checking surface relief | |
SU911172A1 (en) | Method and device for investigating vibration of objects with diffusion-reflectingsurface | |
SU588526A1 (en) | Method of obtaining photos with space carrier frequency |