Effect of Epoxy Impregnation on the Moe and Mor of Intact and Failed Yellow-Poplar (Liriodendron Tulipifera L.) Sapwood Beams

Gregory R. Moore, L. Dale Garges, Paul R. Blankenhorn, Donald E. Kline


The effects of epoxy impregnation on the MOR and MOE of intact and failed yellow-poplar (Liriodendron tulipifera L.) clear sapwood beams were investigated. Both impregnated and unimpregnated specimens were partially failed in bending, impregnated to stabilize the cracks, and retested. The presence of induced cracks had a significant effect on the MOR of the material after impregnation or reimpregnation, but not on the MOE. Both the MOR and MOE of the failed, then impregnated material exceeded the values for unimpregnated yellow-poplar.


Epoxy;impregnation;wood-polymer composites

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