Parametric Optimization for Improved Tool Life and Surface Finish in Micro Turning Using Genetic Algorithm

Influence of Process Parameters on the Surface Roughness during turning operation of High Strength Steel

“…EMCO Concept Turn 45 CNC lathe equipped with Sinumeric 840-D (similar to the one used in Durairaj and Gowri, 2013) was used to conduct experimental work. The uncoated tungsten carbide insert was clamped with the tool holder to carry out this work.…”

“…The surface roughness was measured and reported for a length of 50mm. and evaluated using surface roughness tester Tessa (Durairaj & Gowri, 2013). All cutting parameters were controlled via CNC part program.…”

“…Best conditions of cutting resulting from genetic algorithm are conformed to the measurements of experiments. A primary limitation of response surface type of approaches (whether linear such as in Lalwani, Mehta, and Jain (2008); Diniz and Micaroni (2002)) or nonlinear such as in Oktem, Erzurumlu, and Kurtaran (2005); Durairaj and Gowri (2013); Kant and Sangwan (2014) is that the obtainable results are highly dependent on the quality and accuracy of the response surface, which can be difficult to establish without a large number of experimental samples. Oftentimes however, a response surface is a "necessary evil" in order to allow use of advanced stochastic optimization approaches such as genetic algorithm, because otherwise the number of sample experiments needed becomes unreasonably large (several thousands).…”

Mathematical Modelling of Surface Roughness for Evaluating the Effects of Cutting Parameters in Drilling Process

“…Many authors suggested linear and exponential empirical models for surface roughness as functions of machining parameters [13], [14], [15], [16], by the following:…”

“…[10] Metal cutting is one of the most significant manufacturing processes in the area of material removal. Black [14] defined metal cutting as the removal of metal chips from a workpiece in order to obtain a finished product with desired attributes of size, shape, and surface roughness [15]. One important parameter in the qualification of cut surfaces is their roughness, and its indexes.…”