Thermo-mechanical performance evaluation of motorcycle disc brake rotors using finite element analysis Sagar Baburao Porlekar, Ajit Bhanudas Kolekar Revista De Metalurgia, 2025 Disc brake rotors are essential safety components in motorcycles, where their thermo-mechanical behavior under dynamic braking directly influences performance, durability, and reliability, particularly at high speeds. Conventional Gray cast-iron rotors, although widely used, often suffer from excessive thermal stress, significant deformation, and inadequate heat dissipation under severe braking conditions. Aluminium metal matrix composites (AMMCs) present advantages such as reduced weight and enhanced strength but encounter challenges including thermal expansion mismatch, localized stress concentration, and instability at elevated speeds. Despite their potential, few studies have explored microstructural tailoring of AMMCs to optimize their thermo-mechanical performance for practical braking applications. To address this, the present study systematically modifies AMMC constituents by incorporating tungsten carbide (WC) reinforcement while proportionally reducing aluminium content. A solid drilled disc rotor from a Bajaj Pulsar 150 cc was modeled in ANSYS Workbench and analyzed under transient coupled-field conditions across four braking speeds (800–2000 rpm). The work integrates transient Finite Element Analysis with experimental validation to compare Gray Cast Iron and three AMC formulations. Increasing WC reinforcement by 2% and reducing aluminium content improved thermal conductivity, hardness, and wear resistance while minimizing stress and deformation. Simulation and experimental results revealed that Gray Cast Iron experienced higher stress and temperature rise, whereas modified AMC2 demonstrated superior performance with lower peak temperatures, stable stress distribution, and minimal deformation. These findings highlight modified AMC2 as a promising material for next generation high-performance brake rotors, offering enhanced safety, durability, and weight efficiency.
Effect of process parameters on impact strength and hardness of FDM printed ABS parts Ajit B. Kolekar, Shrikant M. Bhosale, Mahesh S. Salunkhe, Nikhil P. Raut International Journal of Materials and Product Technology, 2024 Fused deposition modelling, an additive manufacturing (AM) process, helps in manufacturing complex components that are influenced by the various process parameters. The main objective is to experimentally evaluate the Shore D hardness and Izod impact of 3D-printed test specimens. Using a 3D printer, the test specimens are manufactured. The test specimens were manufactured taking into account various printing factors such as printing orientation, printing pattern, and infill density. The specimens were produced with three printing orientations (edge, vertical, and flat), four infill patterns (grid, rectilinear, honeycomb, and cubic), and an infill density range of 20% to 100%. For 60% infill density, cubic infill structure, and edge printing orientation, the highest impact strength is obtained (2,024 J/m) and a Shore D hardness of 45.7, and for 40% infill density, honeycomb infill structure, and edge printing orientation, the lowest impact strength is obtained (203 J/m), with a hardness of 42.8 on the Shore D scale. The study shows that the Izod impact strength and Shore D hardness of FDM-printed ABS items are affected by process parameters.
Comparison of compression ignition engine performance fuelled by liquefied petroleum gas and diesel International Journal of Mechanical Engineering and Technology, 2016
Di-methyl ether (DME): As fossil energy carrier 20th World Hydrogen Energy Conference Whec 2014, 2014
