Mechanical Characteristics of Bamboo

Abstract:

Fracture toughness, stress-strain relation and the damping characteristics of bamboo are investigated. The fracture toughness of bamboo in tearing along the longitudinal direction is measured by the use of newly devised apparatus in which the crack opening displacement is controlled in a constant velocity and a quasi-steady extension of the crack is maintained. The stress-strain relation of bamboo is examined in a reversible elastic range using a conventional tensile test in the longitudinal direction. Repeated tensile loading tests show that the stress-strain relation has a strong non-linear hysteresis and that it converses to a steady loop. The damping of bamboo is measured by the use of inverted torsion pendulum apparatus. The specimen is taken so that damping of twisting longitudinal bar is measured. The damping coefficient of bamboo is much larger than that of metals. The mechanical properties of bamboo are examined in terms of water concentration and fiber density in the bamboo.

• Periodical: Key Engineering Materials (Volumes 525-526)
• Pages: 609-612
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.525-526.609
• Online since: November 2012
• Authors: Tadashi Shioya, Toshikatsu Asahina
• Keywords: Attenuation, Bamboo, Damping Coefficient, Elastic Modulus, Fracture Toughness, Inverted Torsion Pendulum, Water Concentration

References

[1] T. Shioya, T. Kakiuchi, K. Fujimoto and M. Sekine: Strength, Fracture and Complexity Vol. 6 (2010), p.31–50.