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Multichannel fiber laser Doppler vibrometer studies of low momentum and hypervelocity impacts

Posada-Roman, Julio E., Jackson, David A., Cole, Mike J., Garcia-Souto, Jose A. (2017) Multichannel fiber laser Doppler vibrometer studies of low momentum and hypervelocity impacts. Optics and Lasers in Engineering, 99 . pp. 39-45. ISSN 0143-8166. (doi:10.1016/j.optlaseng.2017.03.002) (KAR id:61411)

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https://doi.org/10.1016/j.optlaseng.2017.03.002

Abstract

A multichannel optical fiber laser Doppler vibrometer was demonstrated with the capability of making simultaneous non-contact measurements of impacts at 3 different locations. Two sets of measurements were performed, firstly using small ball bearings (1 mm–5.5 mm) falling under gravity and secondly using small projectiles (1 mm) fired from an extremely high velocity light gas gun (LGG) with speeds in the range 1 km/s–8 km/s. Determination of impact damage is important for industries such as aerospace, military and rail, where the effect of an impact on the structure can result in a major structural damage. To our knowledge the research reported here demonstrates the first trials of a multichannel fiber laser Doppler vibrometer being used to detect hypervelocity impacts.

Item Type: Article
DOI/Identification number: 10.1016/j.optlaseng.2017.03.002
Uncontrolled keywords: Impacts; Vibration; Laser Doppler; Heterodyne; Light gas gun
Divisions: Divisions > Division of Natural Sciences > School of Physical Sciences
Depositing User: Matthias Werner
Date Deposited: 20 Apr 2017 15:03 UTC
Last Modified: 16 Feb 2021 13:44 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/61411 (The current URI for this page, for reference purposes)
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