Method and apparatus for identifying the modulus of elasticity of logs
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United States of America Patent
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Aug 28, 2012
Grant Date -
Mar 18, 2010
app pub date -
Sep 2, 2009
filing date -
Sep 18, 2008
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Abstract
An apparatus for identifying the modulus of elasticity of logs includes a device (2) equipped for detecting at least one log (T) eigenfrequency (natural frequency) and with a plurality of supports (10) able to move by rotating between a pick up position, in which they are located at a loading station (7), and a release position in which they are located at an unloading station (8) which is on the opposite side of a supports (10) axis of rotation relative to the loading station (7). A method for identifying the modulus of elasticity of logs includes the steps of picking up a log (T) while it is fed along a first direction (A1) on a first conveyor line (102); subjecting the log (T) to a step of detecting at least one natural frequency; and a step of releasing the log (T) on a second conveyor line (103) defining a second feed direction (A2) which is transversal to the first conveying direction (A1).
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