http://nopr.niscpr.res.in/handle/123456789/59459 Tue, 06 Oct 2026 05:22:36 GMT 2026-10-06T05:22:36Z http://nopr.niscpr.res.in/handle/123456789/61241 Title: Waste Tyre Recycling: A Emerging Applications with a Focus on Permeable Pavements Authors: Muttil, Nitin; Chaudhary, Sandeep; Prasad, K Eswar; Singh, Swadesh Kumar Abstract: Increasing urbanization and development of automobile industry have given rise to an increase in global tyre waste generation. In Australia, it is estimated that around 450,000 tonnes of tyres reach their end-of-life annually and a large percentage of it is disposed to landfill or on-site burial or is stockpiled. This poses a significant environmental and safety risk, since such sites act as a breeding ground for pests and present a significant fire hazard. Hence it is essential to increase the recycling of this hazardous waste. This paper presents a review of the recycling of end-of-life tyres (EOLT) in Australia to produce tyre-derived products (TDPs), which traditionally has been based on mechanical recycling methods (using a series of shredders, screens, and granulators). Key TDPs from Australian tyre recovery include shredded tyres, crumb rubber and baled tyres. There is currently an emerging market in Australia for chemical recycling of tyres, which are typically based on pyrolysis and gasification processes. The produced TDPs have a variety of applications, with key most productive markets being that for crumb rubber in road sprayed seals and rubber granules in soft-fall surfaces and rubber matting in playgrounds and so on. There is a strong emerging market for rubberized concrete, which can be used as lightweight fill and as a drainage medium in landfills. New processing technologies like tyre pyrolysis to generate oil and tyre-derived fuel and also strongly emerging technologies. With a strong push for sustainable design initiatives, TDPs are also being used in permeable pavements, a water sensitive design strategy that is gaining popularity in Australia. Page(s): 707-713 Sun, 01 Jan 2023 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/61241 2023-01-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/61240 Title: Modeling of Dry Conditioned Sliding Wear And Friction Behavior of Heat-Treated Silicon Nitride Strengthened Al Metal Matrix Nanocomposites Authors: Kumar, Ashish; Rana, Ravindra Singh; Purohit, Rajesh; Kumari, Soni Abstract: In the presented work, the sliding wear under dry conditions and friction behaviour of Si3N4 reinforced high-strength Aluminum alloy (AA)7068 nanocomposites have been investigated under various loads, sliding velocity, and rubbing distances. The fabrication of nanocomposites has been done by using the stir casting technique with the advancement of ultrasonication. Scanning electron microscope (SEM), Elemental mapping, and energy dispersive spectroscopy (EDS) are used to analyze the microstructure of prepared nanocomposites and worn surfaces. The wear resistance improves with the incorporation of Si3N4 particles in Al 7068 alloy and further increases by increasing the weight % of reinforcement. The reinforcement is done by 0.5, 1, and 1.5 % Si3N4 by weight. ANOVA reveals that sliding distance is the most dominating factor in the wear loss of samples, and load became the most influential parameter in the coefficient of friction (COF). Microstructure reveals grain boundaries become discontinued after T6 heat treatment. AMNCs containing 1.5wt.% Si3N4 shows minimum wear loss compared to other nanocomposites and alloys. Page(s): 714-722 Sun, 01 Jan 2023 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/61240 2023-01-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/61239 Title: Temperature and Strain Rate Dependent Anisotropic Plastic Deformation Behavior of AZ31B Mg Alloy Authors: Jaimin, Aarjoo; Kotkunde, Nitin; Morchhale, Ayush; Anand, Aditya Raj; Sadhukhan, Anurag; Singh, Swadesh Kumar Abstract: In the present study, the plastic deformation of commercially available AZ31B alloy at different temperatures (300K-473K) and strain rates (0.1s-1-0.01s-1-0.001s-1) under uniaxial tensile test has been carried out. Three different sheet orientations, viz., rolling direction (RD), transverse direction (TD), and 45° to rolling direction have been used. The outcomes of the experiments have demonstrated a temperature-dependent relationship between mechanical properties such as yield strength, ultimate tensile strength, and percentage elongation. The yield strength and ultimate tensile strength has decreased by 28.58% and 31.03% respectively as temperature increased from 300 K to 473 K. At elevated temperature (473 K) the material has exhibited highest ductility (64.88%) as compare to 300 K. The hardening exponent has been found to decrease with increasing temperature. The flow stress behaviour has been predicted using work hardening models such as the Hollomon and Ludwik. Two-stage work hardening behavior has been observed at all the temperatures. According to statistical parameter comparison, Ludwik equation prediction capability of correlation coefficient (0.9959) has been found to be best in agreement with the experimental results. Page(s): 723-729 Sun, 01 Jan 2023 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/61239 2023-01-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/61238 Title: Experimental Investigation on Dimensional Characteristics and Surface Morphology of Microchannels Fabricated on Smart Ceramic by DPSS Nd:YAG Laser Authors: Panda, Samir Kumar; Rout, Sweta; Panigrahi, Debasish; Dhupal, Debabrata Abstract: Smart ceramic material like barium titanate (BaTiO3) is in high demand in today's highly competitive precision industries; as it has numerous applications in electronic, biomedical, and aerospace engineering.In this endeavor, laser micro-milling approach (LMMA) hasbeenattempted with a suitable experimental design plan; to scrutinize the laser influencing variables against the LMMA outcomes during the processing of BaTiO3 throughout the fabrication of microchannels. This article presents an investigational act on the fabricated micro-channels to discern the impacts of LMMA parameters (gas pressure, scan strategy, current and scanning speed) against the dimensional (like deviations in channel upper and lower width) and surface characteristics of the surface feature. The surface morphology study hasbeen accomplished with the support of energy dispersive spectroscopy (EDS) in conjunction with scanning electron microscope (SEM) to scrutinize the elemental alterations and surface characteristics at the zone of laser ablation. A statistical multi-objective optimization (MOO) technique known as grey relational analysis (GRA) has beenused later in this paper to predict an optimal parametric setting. The MOO results’ efficacy has been validated further in the corroboration assessments, the predicted optimal solutions have been obtained with an error of 4.57 %, 3.89 % and 4.88 % for W-RCL, LWD and UWD respectively. Page(s): 730-737 Sun, 01 Jan 2023 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/61238 2023-01-01T00:00:00Z