Dynamic Modulus of Three-Layer Boards with Different Furnish and Shelling Ratio
| Autor: | Muhammad Navis Rofii, Shigehiko Suzuki, Tibertius Agus Prayitno |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Static bending Materials science Methylene diphenyl diisocyanate business.industry 020209 energy Materials Science (miscellaneous) Modulus 02 engineering and technology Bending Structural engineering 01 natural sciences Industrial and Manufacturing Engineering chemistry.chemical_compound chemistry 010608 biotechnology Bending stiffness Dynamic modulus 0202 electrical engineering electronic engineering information engineering Static testing Composite material business |
| Zdroj: | Journal of the Korean Wood Science and Technology. 44:274-282 |
| ISSN: | 1017-0715 |
| DOI: | 10.5658/wood.2016.44.2.274 |
| Popis: | This aims of this study were to investigate the relationship between non-destructive evaluation (NDE) and actual bending properties of particleboard, and to predict the bending properties of three-layer particleboard. Three kinds of raw materials, i.e. Hinoki (Chamaecyparis obtusa Endl.) strand, knife-milled Douglas-fir (Pseudotsuga manziesii (Mirb) Franco), and hammer-milled matoa (Pometia spp.) obtained from wooden industry, were utilized as furnish for experimental panel with methylene diphenyl diisocyanate (MDI) resin as binder. The NDE test was conducted by hit sounds using an FFT analyzer according to the spectrum peak ofwave frequency, while the static bending test was conducted according to JIS A-5908. The results reveal thatthe dynamic Young’s modulus as an NDE test has a potential for being used to predict the elastic bending of particleboards by a specific equation for adjusting its proper values. The values of NDE and static test aresignificantly different with a deviation range at 3-20%. The bending stiffness of three-layer particleboards manufactured from different wood species is predictable by observing the bending stiffness of two elements based on the thickness of its layers. The predicted values of bending stiffness and static test are significantly different with a deviation range at 5-24%. Keywords : dynamic modulus, three-layer boards, furnish, shelling ratio, predicted bending |
| Databáze: | OpenAIRE |
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