The physical properties and strength characteristics of kenaf plants

Abstract

This article reports some physical properties and strength characteristics of two kenaf (Hibiscus cannabinus) varieties in Nigeria at critical stages of harvest with a view of understanding the plant material reaction to the load and deformation. The kenaf samples were subjected to a uniaxial compression test between two parallel plates at a loading rate of 20 mm·min<sup>–1</sup> and a uniaxial bending test between two supports on each end at a loading rate of 50 mm·min<sup>–1 </sup>using a Universal Instron Testing Machine (Instron, USA). The results of the parameters studied revealed that Tianung 1 gave the higher stem height, stem diameter, compressive stress, bending stress, rupture load, rupture energy, Young’s modulus, and toughness, which were 293.10 cm, 18.45 mm, 8.70 MPa, 44.86 MPa, 191.51 N, 3.43 J·mm<sup>–2</sup>, 350.81 MPa, and 6.85 N·mm<sup>–1</sup>, respectively, at four months after planting. The parameters studied significantly increased with maturity for the two kenaf varieties. However, the moisture content significantly reduced with maturity.

Interfacial Properties and Melt Processability of Cellulose Acetate Propionate Composites by Melt Blending of Biofillers

“…It is generally known that the composition of Kenaf fiber consists of 45–57% cellulose, 21.5% semi-cellulose, 8–13% lignin, and 3–5% pectin [ 24 , 25 , 26 , 27 , 28 ]. As a result of measurements obtained by the refining method used in this study, it is judged that the remaining impurities besides cellulose have been removed, as a weight reduction of about 48% was observed.…”

Uji Kinerja Mesin Panen Padi Menggunakan Mesin Brush Cutter

“…Kebutuhan dan konsumsi bahan bakar dipengaruhi oleh beberapa faktor, diantara adalah jenis mata pisau dan tanaman yang di panen. Dalam satu hektar, kebutuhan bahan bakar dapat mencapai 21,28 hingga 46,91 liter (Falana, Aluko, Adetan, & Osunbitan, 2020). Selain itu, konsumsi bahan bakar juga dipengaruhi oleh putaran (rpm), dimana semakin tinggi putaran, konsumsi bahan bakar semakin rendah (Susanti & Arif, 2020)…”

A Study on Usage of Agricultural Engineering Equipment for Various Crops and Yields in South Tamilnadu

“…The suitability of a vibrating dual bent-share cultivator was studied (Esehaghbeygi et al, 2020). The adaptation of some existing technologies such as sugarcane-type harvester, jute/reed-type harvesters, and forage harvesters for kenaf harvesting has not been successful (Falana et al 2020). A machine that can sow seeds of paddy, wheat, black gram, mung bean, lentil, mustard, and radish in rows was designed and developed at the Department of Farm Power and Machinery, Bangladesh Agricultural University (Ali, 2019).…”