G - Physics – 06 – Q
Patent
G - Physics
06
Q
G06Q 50/00 (2006.01) B27B 1/00 (2006.01) G01N 3/30 (2006.01) G01N 33/46 (2006.01)
Patent
CA 2316046
A system for estimating a velocity of a stress wave induced in an unfinished wood product such as a log or tree stem is used to maximize the value of wood products produced. An accelerometer is placed against the log while the log is struck with a pneumatic hammer. By monitoring the signals received at the accelerometer, the velocity of stress wave can be determined. Based on the velocity, an estimate of the modulus of elasticity (MOE) for the wood in the log is made. A price table is selected that relates different sizes of lumber having the determined modulus of elasticity to a current market value. The log is then cut such that the value of the lumber produced is maximized.
Christensen Elmer
Floyd Stanley L.
Jones Larry H.
Kendall Calvin K.
Pearce Billy B.
Smart & Biggar
Weyerhaeuser Company
Weyerhaeuser Nr Company
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