Parametric Optimization of Laser Engraving Process for different Material using Grey Relational Technique- A Review.

Laser engraving process is non conventional machining process used for marking/engraving of almost each material which cannot be mark by conventional machining processes. In laser engraving process the surface of material is heat up and subsequently vaporize the material. With the use of laser engraving machine the marking/engraving is possible by using different input parameter as spot diameter, laser power, laser frequency, different wave length etc, and get the changes in output parameter like material removal rate, surface finish and indentation. To optimization of all these parameters with multiple performance characteristic based on the Grey relational analysis. Taguchi method of orthogonal array will be performed to determine the best factor level condition. By analyzing Grey relational grade, it will be observed that which parameter has more effect on responses of input parameter to the output parameter