http://210.212.227.212:8080/xmlui/handle/123456789/158 2026-05-17T00:01:38Z 2026-05-17T00:01:38Z Sonu, S Shafi, K A http://210.212.227.212:8080/xmlui/handle/123456789/178 2022-09-26T06:50:16Z 2022-09-16T00:00:00Z

EXPERIMENTAL INVESTIGATION ON THE PHYSICAL AND COMBUSTION PROPERTIES OF BRIQUETTES FROM VARIOUS AGRO -AQUATIC WASTES Sonu, S; Shafi, K A The constant increase in environmental pollution and depletion of renewable resources leads to a focus on bio briquette. Therefore, several issues arise relating to reusing or recycling such materials. Many of the bio-wastes are the main reason for the environmental issues. Yet, another major issue of concern in India is the aquatic weed infestation in water bodies. Invasive weeds such as water hyacinth (WH) pose severe environmental and economic issues. A potential remedy for this waste disposal and high dependence on non-renewable materials is the conversion of these aquatic weeds into sustainable biomass briquette. The primary objective of this work is to explore the potential of various biomasses for the production of bio briquette using natural rubber latex as a binder. Biomass briquettes were produced with biomass that passed through a sieve of 2.36 mm. An experimental investigation was carried out on the bio briquette to determine bulk density, proximate parameters, water absorption, shatter index, compressive strength, and calorific value. From the characterization of the raw material, it is clear that rice husk and banana peel have higher ash content (above 20 %). Hence, they are not suitable for biomass briquette production. Moreover, Sugar cane bagasse, dry leaves, water hyacinth leaves, oil palm fruit bunch, sawdust, vegetable market waste, and spent tea waste have excellent fuel properties and are good candidates for biomass briquette production. The density calculation shows that briquettes made from spent tea waste have the highest dimensional stability. The water performances of briquettes made from sawdust, rice husk, vegetable market waste, water hyacinth, and oil palm fruit bunch are excellent. Furthermore, all the developed briquettes have superior compressive strength except for spent tea waste. Also, the durability characteristics of all the produced briquettes were excellent; hence, the chances of collapse during transportation will be minimal. Higher heating values were obtained for briquettes made from sawdust, vegetable market waste, grass waste, oil palm fruit bunch, spent tea waste, and water hyacinth leaves from the characterization of biomass briquettes

2022-09-16T00:00:00Z Renju, C Daniel Mubarak, Ali http://210.212.227.212:8080/xmlui/handle/123456789/177 2022-09-26T07:40:05Z 2022-09-12T00:00:00Z

EXPERIMENTAL INVESTIGATION ON MECHANICAL PROPERTIES OF UNTREATED AND CRYO-TREATED HEMP FIBER REINFORCED POLYMER COMPOSITES Renju, C Daniel; Mubarak, Ali Emerging research is primarily concerned with environmental and economic challenges associated with the development of new materials for future industries. Various industry sectors have been attempting to replace synthetic fibers used as reinforcement in polymer composites with natural fibers over the past few decades. Because of their favourable and remarkable properties, composite materials have long provided a significant quantity of research and industrial effort. Composite materials are made up of two materials that have diverse physical and chemical characteristics. When they are joined, they generate a substance that is specialized to fulfil a certain purpose. It consists of reinforcement phase and matrix phase. Fiber reinforced polymers employ fiber as a reinforcement phase to offer strength to the composite. Natural fibers are more environmentally friendly, renewable, inexpensive, non-hazardous, nonabrasive, and widely available than synthetic fibers. In this project, Hemp fiber is employed as the reinforcing phase while DGEBA epoxy is used as the matrix phase. The Hemp Fiber Reinforced Polymer (HFRP) composites were fabricated using Vacuum Assisted Resin Transfer Moulding (VARTM) method. The mechanical properties of HFRP composites were tested by selecting two samples untreated HFRP and Cryo-treated HFRP. Tensile test, Flexural test, Hardness test, water absorption study along with analysis study also done. Ansys ACP prepost software used for the validation. The study shows that the cryo-treated samples shows a better flexural strength, hardness and less water absorption rate compared to untreated sample. But it shows less tensile strength compared to untreated sample.

2022-09-12T00:00:00Z Rajalekshmi, S Reby Roy, K E http://210.212.227.212:8080/xmlui/handle/123456789/176 2022-09-26T07:44:16Z 2022-09-12T00:00:00Z

MECHANICAL INVESTIGATION OF CRYO-TREATED SILANIZED GRAPHENE OXIDE MODIFIED CARBON FIBER REINFORCED POLYMER COMPOSITE Rajalekshmi, S; Reby Roy, K E The Space industry is still in search for a suitable material for cryogenic tanks. Carbon Fiber Reinforced Plastic composites is identified as a compatible material for cryogenic applications. Various researches are being conducted using many modifiers and additives to study its effect on different properties of CFRP composites. Silane Graphene Oxide is being coated on the carbon fiber using Electrophoretic Deposition method. Composite panels of epoxy and the Silane Graphene Oxide coated carbon fibers are fabricated by Vacuum Assisted Resin Transfer Molding technique (VARTM). The samples required for determining tensile strength, flexural strength and impact strength were cut out according to the ASTM standards. The 1g/L SGO modified CFRP samples at room temperature have shown an enhancement in tensile strength, and impact energy by 13.16 % and 14.03% respectively. While the 1.5g/L SGO-modified CFRP showcased an increment in the flexural strength by 24.18% at room conditions. To study the improvement in the cryo-treated SGO modified CFRP the tests are conducted after dipping the samples in liquid nitrogen for 20 minutes. The results obtained after the tests showed an improvement in the corresponding properties. The tensile strength, impact energy and flexural strength of cryo-treated 1g/L SGO- modified CFRP portrayed an increase by 15.17%, 17.59% and 35.29% respectively. Thermogravimetric analysis and Differential Scanning Calorimetry tests were also conducted to study about the thermal stability and specific heat capacity range of modified samples. From the inference obtained from the thermal analysis and mechanical tests 1g/L SGO-modified CFRP has the better performing composition

2022-09-12T00:00:00Z Nameer, Najeeb Kannan, S http://210.212.227.212:8080/xmlui/handle/123456789/175 2022-09-26T06:31:00Z 2022-09-16T00:00:00Z

PREDICTION OF STRESS GENERATED AT INSOLE SUB-SYSTEM OF DIABETIC FOOT ULCER OFFLOADING DEVICE USING FULL FACTORIAL DOE Nameer, Najeeb; Kannan, S Diabetes is one of the metabolic diseses.Uncontrolled diabetes can lead to diabetic foot ulcers and if it is not treated further it would lead to amputation. Foot ulcer patients are prescribed with Diabetic Foot Ulcer Offloading devices like walkers etc. by doctors. Here in this study we focus on developing an insole sub- system and predict the insole pressures using the full factorial DOE, in initial phase a 3-layer insole with different materials was modelled, and material combinations was to be found hence 3 different combinations were simulated and best stress reducing insole combination was selected as the insole. The control factors were selected and the datas were given to the statistical software Minitab, were 16 DOE’s were to be analysed, which was performed in Ansys. The insole combinations showed a stress reduction of about 43% with barefoot and the statistical software provide the effectiveness and interactions of the diiferent control factors on each outputs variations and the final regression equation predicted the outputs (stress) values of different control factors, which were validate again after cross verification

2022-09-16T00:00:00Z