Determination of material properties of violin tone wood using electronic holography

Stanislav Urgela; Henrik O. Saldner

doi:10.1117/12.195500

30 November 1994 Determination of material properties of violin tone wood using electronic holography

Stanislav Urgela, Henrik O. Saldner

Proceedings Volume 2342, Interferometry '94: Photomechanics; (1994) https://doi.org/10.1117/12.195500
Event: International Conference on Interferometry '94, 1994, Warsaw, Poland

Abstract

Four pieces of halved blank for violin making, two cut from tone spruce wood and two from maple wood, have been investigated. The method used for determination of the elasticity constants of the wooden plates is based on the knowledge of eigenfrequencies and shapes of the first few vibration modes. The electronic holography system visualizes the time-average interferograms in real-time. The electro-optical measurements are supported by the separation of eigenmodes electroacoustically. The frequencies are compared with the results of the Chladni method and a measurement of frequency responses. The obtained knowledge can be helpful for the selection of wood plates before they are used in a production process.

Citation Download Citation

Stanislav Urgela and Henrik O. Saldner "Determination of material properties of violin tone wood using electronic holography", Proc. SPIE 2342, Interferometry '94: Photomechanics, (30 November 1994); https://doi.org/10.1117/12.195500

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