The signal including vibration information of multiple spatial points is captured by one single-pixel photodetector. The beams are projected onto a vibrating object, reflected and interfered with a common reference beam. The multiple laser beams with different frequency shifts are generated from one laser source. In this paper, a fiber-based self-synchronized multi-point LDV is proposed. Scanning LDV is usually impractical to do measurement on transient events. Normal LDV can only offer a single-point measurement. Laser Doppler vibrometer (LDV) is a non-contact optical interferometric system to measure vibrations of structures and machines with a high precision. international conference on vibrational measurements by laser and non-contact techniques and short course, Ancona (Italy), 22- Other Information: DOI: 10.1063/1.3455475 (c) 2010 American Institute of Physics Journal ID: ISSN 0094-243X Country of Publication: United States Language: English Subject: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ALUMINIUM BOUNDARY CONDITIONS EXCITATION FINITE ELEMENT METHOD FREQUENCY MEASUREMENT LASERS OSCILLATION MODES PLATES SILICONES SIMULATION SPHERES CALCULATION METHODS ELEMENTS ENERGY-LEVEL TRANSITIONS MATHEMATICAL SOLUTIONS METALS NUMERICAL SOLUTION ORGANIC COMPOUNDS ORGANIC SILICON COMPOUNDS POLYMERS = , Publication Date: OSTI Identifier: 21366748 Resource Type: Journal Article Journal Name: AIP Conference Proceedings Additional Journal Information: Journal Volume: 1253 Journal Issue: 1 Conference: 9. Technological Faculty, University of Brasilia, Brasilia, DF 70910-900 (Brazil).Faculty of Mechanical Engineering, University of Campinas, Campinas, SP 13083-970 (Brazil).
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