ARULMURUGAN S
@rajalakshmi.org
ASSISTANT PROFESSOR / MECHANICAL ENGINEERING
RAJALAKSHMI ENGINEERING COLLEGE
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Arulmurugan Seetharaman and Venkateshwaran Narayanan
Wiley
S. Kumar, S. Arulmurugan, Abraham J.S Jospher, P. Chandrasekar, C. Devanathan, and G.S Sai Krishnan
IOP Publishing
Abstract Nowadays the energy usage in the building sectors in the construction industry has been increased for increasing the cooling and heating loads of buildings. The renewable energy generation and incorporation of PCMs in building sectors attains around the world for energy savings. A passive cooling method with PCM integration in the building system is to decrease the energy demand of buildings. This process involves storing cool and heat energy and discharging it as needed. In this work, the ENERGYPLUS simulation has been carried for the PCMs incorporated in the constructed building wall in hot climatic weather conditions in India for considering the passive cooling method. It reduce the daily indoor temperature variation in PCM building throughout the year through absorption of cool energy in PCM during early morning hours without using mechanical energy devices.
S. ARULMURUGAN and N. VENKATESHWARAN
World Scientific Pub Co Pte Lt
This paper presents the tribological examination of various percentages of montmorillonite nanoclay-filled polyester composites and jute fiber reinforced hybrid composites by the Pin on Disc wear testing method. The wear rate and coefficient of friction were investigated for each composition with the working parameters like applied load (10,20,30[Formula: see text]N), sliding speed (3[Formula: see text]m/s), and sliding distance (1500[Formula: see text]m). The reduction in the wear rate was found on the inclusion of 5[Formula: see text]wt.% clay and 25[Formula: see text]wt.% jute fiber and further addition of fiber changes the trend due to the reduced matrix concentration. The wear mechanism of the worn-out surface samples was studied using scanning electron microscopy.
S Vivek, Jayakumari L S, Stephen Bernard S, Suresh G, Javeed Ahmed Md, and Arulmurugan S
FapUNIFESP (SciELO)
Resumo This work presents the function of biobased (palm fiber) as reinforcement in brake pad materials. Reinforcement in brake lining improvise wear stability, wear resistance and friction optimization under a dynamic set of operating variables such as braking force, sliding speed, braking duration and braking temperature. Palm fiber have an attractive performance to cost ratio and have stimulated the idea of exploring their possible incorporation into brake pad composite materials. The effect of palm fiber loading on physical, mechanical and tribological properties of composite brake pad is evaluated. The palm fiber is loaded with 2%, 4%, 6%, 8%, 10% and 12% as an alternate of rockwool fiber by varying the pressure and speed in a pin on disc tribometer.By increasing the pressure, 8% and 10% show high friction stability at all speeds. The results show that by raising in the palm fiber quantity the hardness, specific gravity and heat swell increases, and also the loss on ignition and porosity decreases. The SEM descriptions of the composite indicated that the smallest micro voids occurred in the sample having low palm fiber. Finally, the effect of surroundings on the composites was investigated in salt water, water and oil. Palavras-chave: Palm Fiber, Wear, Friction Stability, Brakes, SEM
S. ARULMURUGAN and N. VENKATESHWARAN
World Scientific Pub Co Pte Lt
This paper represents the nanomechanical properties of various loading levels of montmorillonite clay filled polyester composites and randomly distributed jute fiber reinforced hybrid composites through Vickers micro-hardness test. The study of indentation fracture mechanics in polymer materials is a simple and cost-effective technique for the determination of fracture toughness. Ultrasonication technique was used to disperse the clay in the polyester matrix. The hand layup method was adapted to prepare the test specimens. Incorporation of 5[Formula: see text]wt.% montmorillonite clay into the polymer matrix results in an enhancement in hardness of 26.52% and the modulus of elasticity increased from 4205.21[Formula: see text]MPa for neat polyester to 5051.46[Formula: see text]MPa with the addition of clay. Fracture toughness was observed to depend on the montmorillonite clay content, and the maximum value was observed at 5[Formula: see text]wt.% nanoclay and 25[Formula: see text]wt.% jute fibers. The results show that the increase in the fiber content reduces the crack propagation in hybrid composites and increases the fracture toughness. To predict the crack size, the scanning electron microscope images are used.
Seetharaman Arulmurugan and Narayanan Venkateshwaran
FapUNIFESP (SciELO)
Obstract In this article, the influence of alkali treatment and addition of montmorillonite nanoclay as filler on mechanical and visco-elastic behaviour of jute fibre polymer composite were investigated. The composites are fabricated using 5wt% of nanoclay, untreated and chemically treated jute fibre of various percentage by handlayup method. The static mechanical properties like tensile, flexural, impact and inter laminar shear strength are studied as per respective ASTM standard. The dynamic mechanical analysis was carried out to evaluate storage modulus and damping factor of the prepared composite. The composition and structure of the functional groups of modified fibres were examined by Fourier transform infrared spectroscopy. The results showed that the interaction of filler addition and NaOH+KMnO 4 treatment of fibres have significantly improved the tensile, flexural and impact properties to 47.12, 201.13, 172.61MPa respectively. Dynamic mechanical analysis results revealed that the incorporation of filler increases the storage modulus and glass transition temperature. The incorporation of 5wt% clay and 25wt% jute fiber increase the glass transition temperature of the composite material from 109 to 115
S. Arulmurugan and N. Venkateshwaran
SAGE Publications
In this work, the exfoliation of nanoclay in the polyester matrix was investigated using Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM) to evaluate the optimum parameters (frequency and time) in ultra-sonication technique. Various weight percent (1, 3, 5 and 7) of nanoclay is then mixed with polyester resin at optimum parameters. The mechanical properties and free vibration characteristics are investigated to determine the optimum clay percentage in the matrix. Further, with the optimum clay weight percentage, jute fibers of various weight percentages (5, 10, 15, 20, 25 and 30) were used to prepare the composite. The tensile, flexural, impact and free vibration characteristic of composite are found as per ASTM standards. From the results, it is found that 5% addition of nanoclay and 15% jute fiber increases the mechanical and vibration behaviour of the composites. Experimental modal analysis was carried out on a cantilever beam-like sample revealed that the addition of nanoclay and fiber has enhanced natural frequencies and damping ratio and the obtained natural frequencies are in good agreement with the theoretical results.