mechanical burn

mechanical burn

A generally superficial burn, often accompanied by an abrasion, caused by friction from ropes, carpet or sports activities.

Carpet burns are generally recognised as a pathogenically distinct form of mechanical burn.
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Defect/Board # 1 #2 #3 #4 #5 #6 Mineral streak x Fleck x Coloration x x x Sound knot Pin knot x Black knot Bark pocket Curl White speck x Decay Blue stain x Worm hole x x Cluster of worm holes x Wane x x Split x Shake Through shake x Hit and miss x Mechanical burn x Defect/Board #7 #8 #9 #10 #11 Mineral streak x Fleck x x x x Coloration Sound knot x Pin knot Black knot x Bark pocket x x Curl x x White speck Decay x Blue stain Worm hole x Cluster of worm holes Wane x Split x x Shake x Through shake Hit and miss Mechanical burn Table 3.--Comparison of system characteristics.
Both systems failed to detect pin knots, curl, white speck, individual worm holes, hit and miss and mechanical burns. It is interesting to note that the two simpler systems, AddVantage and Spectra, both were able to partially detect hit and miss and that the AddVantage system partially picked up white speck while the Spectra system did well with worm holes.
Both systems failed to partially or correctly detect pin knots, curl, white speck, individual worm holes, hit and miss and mechanical burns.

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