Elastic constants of "Pinus radiata D. Don" by means of ultrasound transmission techniques

Erik Baradit; Cecillia Fuentealba

doi:10.1117/12.435561

3 August 2001 Elastic constants of Pinus radiata D. Don by means of ultrasound transmission techniques

Erik Baradit, Cecillia Fuentealba

Proceedings Volume 4336, Nondestructive Evaluation of Materials and Composites V; (2001) https://doi.org/10.1117/12.435561
Event: 6th Annual International Symposium on NDE for Health Monitoring and Diagnostics, 2001, Newport Beach, CA, United States

Abstract

This work consists in applying the crystals theory and mechanical waves propagation in wood. The wood when is considered as a body of orthotropic symmetry satisfies Hooke's law in its tensor form. Therefore, from the dynamical point of view the elastic constant are expressed by means of Christoffel's equation and can be determined using the ultrasound wave propagation of different polarization through wood. To obtain the constants is necessary the measurement of longitudinal and shear waves in different directions. The experiment results show that in some cases the exact shear wave velocities are very difficult to measure due to waves superposition . In this work the elastic constants (three moduli of elasticity and three shear moduli) Pinus radiata D. Don growing in Chile by ultrasound trasmission techniques are estimated.

Citation Download Citation

Erik Baradit and Cecillia Fuentealba "Elastic constants of Pinus radiata D. Don by means of ultrasound transmission techniques", Proc. SPIE 4336, Nondestructive Evaluation of Materials and Composites V, (3 August 2001); https://doi.org/10.1117/12.435561

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