4TH International Congress on Technology - Engineering & SCIENCE - Kuala Lumpur - Malaysia (2017-08-05)

Effect Of Process Parameters On The Surface Roughness Produced During Machining Of Ceramics Using Awsj
This paper reports the effect of process parameters on the surface roughness (Ra) produced on the machined surface of ceramic material using Abrasive water suspension jet (AWSJ). Machining experiments have been carried out by varying process parameters using Taguchi (L27) Orthogonal Array and the response (Ra) data is analyzed using Signal to Nosie (S/N) ratio of smaller-the-better type. The main effects plot show that the surface roughness increases almost linearly with increase in SOD and nozzle feed rate and the roughness decreases with increase in abrasive particle hardness. The ANOVA results indicate that the process parameters which effect (contribution towards variation in response) the surface roughness significantly are: abrasive particle hardness - 42%, feed rate - 32%, abrasive size - 18% and SOD - 5%. Optimum settings for process parameters that produce lower surface roughness on the machined surface are determined and the confirmation experiments are conducted at these settings and found that the surface roughness obtained is in good agreement (deviation of 8.4%) with predicted response.
Deepak D, Anjaiah Devineni