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Visual Inspection Computerized visual recognition is a new and expanding field. Computers can now look at lumber and assist in making edging decisions. Computerized lumber grading is already possible in the laboratory. With fiber optics, it is not hard to envision a computer vision system that could watch for degrade better than we can do it ourselves today. Let's hope that the cost comes down low enough so that we can afford it. Temperature Drop Across the Load The TDAL measurement provides average MCs at any time during drying, although the values are most accurate below 40% MC. The difficulty we have faced is relating the average MC, or the average drying rate, to the behavior of individual pieces of lumber. I have seen too many cases in lumber drying where the average is not suitable for predicting the individual's behavior. However, for non-exacting uses or for those species where degrade is not very likely, operation on the average can be valid. Presently we do not spend very much effort drying these non-exacting or non-degrade-prone woods, so I am not sure what the benefits of the more sophisticated control system would be. 50PDF Image | Principles and Practices of Drying Lumber
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