Optical Characterization of a Pendular Impact

We present a simple but accurate correlation between an experimental characterization and a simple analytical prediction of a wave propagation induced by the impact of a pendulum in a box filled with fine sand; this research is based on optical measurements and was carried out using the digital imag...

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Bibliographic Details
Published inFrontiers in physics Vol. 8
Main Authors Saldaña-Heredia, Alonso, Martínez-Calzada, Víctor, Márquez-Aguilar, Pedro Antonio, Hernández-Cruz, Daniel
Format Journal Article
LanguageEnglish
Published Frontiers Media S.A 22.10.2020
Subjects
digital image correlation
laser speckle
mass-spring system
pendular impact
wave propagation
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Summary:We present a simple but accurate correlation between an experimental characterization and a simple analytical prediction of a wave propagation induced by the impact of a pendulum in a box filled with fine sand; this research is based on optical measurements and was carried out using the digital image correlation technique to determine the motion on the surface of the box visually observed by the reflection of the laser. We suggest that the reaction to the impact in the body will be similar to an equivalent damped mass-spring system, obtaining an average error of 3.67208 × 10−4.
ISSN:2296-424X
2296-424X
DOI:10.3389/fphy.2020.00329