Investigations on gradient a.c. conductivity characteristics of bamboo (Dendrocalamus strictus)

Abstract

Effect of temperature and frequency variation on a.c. conductivity of bamboo was determined by using a 4274 A Multi-Frequencies LCR meter. Electrical measurements were carried out in the temperature range 24-120°°C and in the frequency range 4-100 kHz. It was observed that the a.c. conductivity increased initially and then decreased with increase of temperature and frequencies. The increase of distance from outer surface to the inner surface side increased the a.c. conductivity values and showed the grading in a.c. conductivity behaviour. Two phases of a.c. conductivity behaviour with temperature exist in bamboo. At 10 mm distance a.c. conductivity suddenly increases which is the critical depth from skin for this bamboo. Increase of temperature, at all the frequencies increases the a.c. conductivity initially and then decreases. Downward peaks in a.c. conductivities are observed at all the frequencies due to the presence of moisture in bamboo, which liberated on heating. Sharp peak is observed in case of sample 4, which is inner most strip. Maximum sharp peak is observed at lowest 4 kHz frequency.

Evaluating the efficacy of neem (Azadirachta indica A. Juss) seed oil treatment for Bambusa vulgaris Schrad. against Pycnoporus sanguineus (L. ex Fr.) Murr. using static bending strength properties

“…Each strip was planed on both the inner and outer surface, using a planing machine, in order to obtain the bamboo timber with mean thickness of 0.5 ± 0.05 cm for the tests. Bamboo timber, according to Chand et al. (2006) is the part between the bamboo skin and the pith.…”

“…(2006) is the part between the bamboo skin and the pith. Bamboo skin is the outermost part of cross‐section of stem wall, where no vascular bundles are seen, while pith is the part of stem wall next to bamboo cavity and this also does not contain vascular bundles (Chand et al. 2006).…”

Silver mirror reaction as an approach to construct a durable, robust superhydrophobic surface of bamboo timber with high conductivity

“…However, in the case of the originally dried bamboo timber, the resistance was infinity due to its inherent insulation (Fig. 8a) [34]. As shown in Fig.…”

Study on Electrical Properties of PALF Reinforced Bisphenol-A Composite

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