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Correlation of manufacturing defects and impact behaviors of kenaf fiber reinforced hybrid fiberglass/Kevlar polyester composite

Suriani M. J., Sapuan S. M., Ruzaidi C. M., Naveen J., Syukriyah H., Ziefarina M.

Polimery

2021

T. 66, nr 1

30--35

Zbadano udarność hybrydowego kompozytu polimerowego na osnowie żywicy poliestrowej napełnionej włóknami szklanymi i kevlarowymi wzmocnionego włóknem łykowym kenaf. Wytworzono pięć próbek różniących się zawartością włókien kenafu (0, 15, 45, 60 i75% obj.) Próbkę kontrolną stanowił kompozyt z 0% obj. udziałem włókien kenaf (0%). Wykazano, że hybrydyzacja wpłynęła na poprawę właściwości udarowych wyjściowego kompozytu. Wyniki potwierdzono analizą SEM defektów produkcyjnych otrzymanego kompozytu. Stwierdzono, że zachodzi korelacja między wytrzymałością na uderzenie awadami produkcyjnymi badanego hybrydowego kompozytu poliestrowego wzmocnionego włóknami kenaf. Powstałe podczas produkcji wady produkcyjne wistotnym stopniu pogarszają właściwości udarowe kompozytów.

In this study, the impact properties of kenaf fibre reinforced hybrid fiberglass/Kevlar polymeric composite was investigated. In this study, a new fiber arrangement based on kenaf bast fiber as reinforcement to the hybrid fiberglass/Kevlar fiber and polyester as matrix used to fabricate the hybrid polymeric composite. Five different types of samples with different of kenaf fiber content based on volume fraction (0, 15, 45, 60 and 75%) to hybrid fiberglass/Kevlar polymer composites were manufactured. 0% of kenaf fiber has been used as control sample. The results showed that hybridization has improved the impact properties. These results were further supported through SEM micrograph of the manufacturing defects of the polymer composite. Based on literature work, manufacturing defects that occurs in composite system reduced the mechanical properties of the material. Therefore, in this research the correlation of impact behaviors and manufacturing defects of kenaf fiber reinforced hybrid fiberglass/Kevlar polymeric composite has been successfully done. As conclusion, the highest manufacturing defects determined in the composites during the fabrication significantly lowest the results of impact behavior.

Design and analysis of salt collector

Naveen J., Muthuvel K., Karthikeyan G., Gowtham V.

Journal of Achievements in Materials and Manufacturing Engineering

2016

Vol. 74, nr 2

86--92

Purpose: Salt is one of the important cooking ingredients used in our daily life. Tamil Nadu is the second largest producer of salt in India, next only to Gujarat. The salt is collected manually by the labours. Since, there was no equipment to collect the salt from the Salt Pan. The paper describes the design and analysis of the salt collecting equipment. The salt from the Salt Pan which consists of salt water can be removed by this equipment. The wooden plate which is present in the equipment will collect the salt and pushes them to both the sides of the Salt Pan. The hand wheel can be used to move the equipment to front and back motion. Another hand wheel is operated to move the wooden plate to the left and right corner which covers all the places of the Salt Pan. This equipment can be modified and reduced to suitable size as per the length of the Salt Pan varies. In the manufacturing process, the suitable length of the pipe is to be selected for the required length. Design/methodology/approach: Thus, it will reduce the time and also the number of labours in the Salt Pan can be reduced. Salt Evaporation Ponds, also called Salterns or Salt Pans, are shallow artificial ponds designed to extract salts from sea water or other brines. The seawater or brine is fed into large ponds and water is drawn out through natural evaporation which allows the salt to be subsequently harvested. The ponds also provide a productive resting and feeding ground for many species of water birds, which may include endangered species. The ponds are commonly separated by levees. The salt collecting technique is a tedious process in which the salt collected by the labours is done by means of hands, in case we are going to replace the manual collecting method into machine collecting that is the separation of salt from the salt water in the Salt Pan. Findings: The labours needed for the salt preparation process are very less in number. By implementing this idea we can greatly reduces the time and the number of labours involved in the Salt Pan. Salt has a very high corrosion effect. It can damage to the human skins. High intensity reflection of sunlight from salt and saline cause eye problems. The damage can be easily rectified by this method. Practical implications: And, hence the overall salt production efficiency can be increased. The salt collector will replace the old salt collecting method and serves as the useful equipment to the workers in the Salt Pan. Originality/value: In Future, it can be made automatically by using motor and overall process can also be made by FRP which has high corrosion resistance.