Mechanical properties of bent-laminated bamboo (Bambusa blumeana, J.A. and J.H. Schultes) furniture components
2002
Servanez, B.F.
Results of the study showed that the springback averaged 1.5% inches for every 12 inches length of the foot of the arch. The mean moisture content of the sample during test was 12.06% and the mean specific gravity at this moisture content was 0.63. The average width of the sample was 2.62 cm while the thicknesses of the different ply ratings were 3.29 cm, 2.64 cm and 1.97 cm for the 10-ply, 8-ply, and 6-ply samples. The mean maximum load for the top-loaded sample was 286.72 kg while the side-loaded sample had a mean of 66.06 kg. The cross-tabulation between radius and ply, for top-loaded samples, yielded the highest mean maximum load of 440.6 kg. This was observed for the sample with 8 inches radius and 10-ply rating. The cross tabulation between radius and ply, for the side-loaded sample, yielded the highest mean of 91.78 kg for the sample with 12 inches radius and 10-ply rating. The radius of curvature and number of ply were both significant factors in determining the mechanical properties of bent-laminated bamboo furniture components. A regression model for the maximum load of top-loaded sample had a 0.946 coefficient of determination. It included the thickness of samples, number of ply and radius of curvature in the linear equation. The mean load at proportional limit carried by the top-loaded sample was 85.28 kg while that for the side-loaded sample was 23.17 kg. The mean stress at proportional limit, mean MOE [modulus of elasticity] and mean MOR [modulus of rupture] for top-loaded sample were 15.77 MPa, 14068.23 MPa and 48.95 MPa, respectively. The counterpart values for the straight sample were 28.49 MPa, 19978.59 MPa and 61.91 MPa, respectively. The mean stresses at proportional limit and mean MOR values for the side-loaded sample were 20.14 MPa and 55.88 MPa, respectively
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