Grading of construction timeber by ultrasound

@article{Sandoz2004GradingOC,
  title={Grading of construction timeber by ultrasound},
  author={J. L. Sandoz},
  journal={Wood Science and Technology},
  year={2004},
  volume={23},
  pages={95-108}
}
The resistance of spruce beams was characterized with the aid of nondestructive ultrasonic measurements. The modulus of elasticity and the modulus of rupture in flexure for beams of commercial sized section can be estimated by observing the speed of propagation of a longitudinal wave applied to the longitudinal axis of the beam. The use of simple ultrasonic equipment and two experimental transducers (in direct and dry contact) permit measurements to be performed in industry. The technique… CONTINUE READING
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