• Title/Summary/Keyword: Fraxinus mandshburica

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Physical and Mechanical Properties of Major Korean Ash Species (한국산 물푸레나무속(屬) 주요 수종의 물리 및 역학적 특성)

  • Hwang, Won-Joong;Kwon, Goo-Joong;Kim, Nam-Hun
    • Journal of the Korean Wood Science and Technology
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    • v.30 no.2
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    • pp.95-101
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    • 2002
  • Physical and mechanical properties of major Korean ash species were examined. For Fraxinus rhynchophylla and Fraxinus sieboldiana, green moisture content of sapwood was almost the same value as heartwood. Heartwood of Fraxinus mandshurica, however, had slightly higher moisture content than sapwood. Green and oven dry densities of F. mandshurica were lower than those of F. rhynchophylla and F. sieboldiana. Swelling and shrinkage of sapwood in F. sieboldiana showed somewhat higher value than those of F. rhynchophylla. Longitudinal compressive strength and modulus of elasticity in F. sieboldiana were lower values than those in the other species. Shearing strength in radial section was higher than that in tangential section of all samples. It could be noted that shearing strength of F. sieboldiana demonstrated higher value than that of the other species. Three species had excellent bending properties in MOR and MOE. Impact bending absorbed energy for F. rhynchophylla and F. mandshurica did not show any significant differences.