Author(s): E. Nimo, K. Anweara
Keywords: Sisal, Nylon, Rubber, Drying Line.
Ropes are primarily useful in our domestic activities. They are ubiquitous, mostly found inside and or outside of our houses. They come in various forms and sizes, thus, big or small and twisted or braided, and with different materials such as nylon, rubber, sisal, leather, cotton, etc. However, some of these ropes, those typically used for dry lines, lose their capacity for supporting a high load after a short period due to weather conditions, the heavy weight of clothes, etc. They often sag or tear, dropping items hung on them on the ground. This problem translates into making the clothes dirty by bringing them closer to the ground and rendering the ropes useless after a period. Hypothetically, it could be that ropes with high elasticity sag faster than those of low elasticity.
This project investigates the application of different materials used as drying lines. It statistically analyzes three types of ropes: rubber, nylon, and sisal, to identify which of them would be the best for a dry line. The study primarily focuses on the experimental data of the force, displacement, tensile strength and elastic modulus of the rope samples obtained using smart technological devices, to draw a conclusion on which one has the least expansion and the highest tensile strength. The data is collected with modern technological tools such as Pasco testing machine and analyzed using MATLAB and Microsoft Excel.
4.1 Limitation. The experimental data though revealed sisal to be the toughest material, failed to predict whether sisal remained the best material for dry lines when subjected to different factors, such as heat. Further experiments could have been done to collect and analyze data on sisal when exposed to weather conditions and mechanical strain. Also, the computed values in this paper were slightly higher as compared to literature values, which could be attributed to operational errors while using the Pasco machine. The Pasco machine required thin strands of the rope samples, thus, disallowing the performance of tests on ropes with a large thickness. 4.2 Conclusion and Future Works To conclude, sisal has the least expansion; hence, it can be suggested as the best rope for making dry lines. Due to the lack of materials, we could not determine the behavior of sisal when exposed to various conditions, for example, higher temperatures and moist conditions. However, it should be noted that, even though we have declared it as the best for making a dry line, we cannot guarantee how durable it may be when exposed to different conditions. As such, we intend to research the performance of sisal in weather conditions in our future works, and we will, in this manner, consider structuring our analysis to discover the quality of sisal when exposed to a few weather conditions.