Application of Grey Based Design of Experiment Technique in Optimization of Charpy Impact Testing

The Mechanical Properties of different materials are determined by conducting various design experimental runs. That should be according to the actual working and operating conditions. In this phenomena the type of applied load(s), its duration and the working conditions play a vital role. Engineering materials are always subjected to external loadings therefore it is of great significance if the effect of these loadings can be quantified. In the current research work an attempt was made to optimize the process parameters with the help of surface treatments in order to maximize the impact toughness and minimize the hardness of EN 31 Steel. For this purpose grey based design of experiment method was used and results works were validated graphically and analytically the obtain result shows the height of the hammer affected the impact toughness significantly on the other hand thermal treatment was the most influenced factor that affected materials hardness significantly.