Machining Behaviour of Poly Crystalline Diamond Insert on Turning Gfrp Composites
Machining Behaviour of Poly Crystalline Diamond Insert on turning GFRP Composites
V.Chockalingam 1, M.Gnanasekar 2, N.Muthukrishnan 3
1,2 - Under graduate student, Department of Mechanical Engineering,Sri Venkateswara College of Engineering, Sriperumbudur – 602 105, Tamilnadu,India
3- Assistant Professor, Department of Mechanical Engineering,Sri Venkateswara College of Engineering, Sriperumbudur – 602 105, Tamilnadu,India. E-mail :mk@svce.ac.in
Abstract
In recent years, composite materials are finding increased applications in many engineering applications, and subsequently, the need for accurate machining of composite has increased enormously. Knowledge acquired in machining of ductile materials is not suitable for composites. In the present study, Glass Fiber Reinforced Plastics (GFRP) is machined in medium duty lathe with Poly crystalline Diamond (PCD) of 1600 grade inserts. Various parameters are measured such as Surface finish and power consumed by main spindle. Optimum parameters are determined from graph. By using optimum parameters tool wear was studied for about 25 minutes. Result provides some useful information. Machining with PCD gives good surface finish at higher cutting speeds with medium depth of cut and feed. Scanning Electron Microscopic (SEM) images also shown.
Key words: GFRP, Turning, PCD, power consumed, surface finish, tool wear
Introduction
Composite materials are continuously displacing traditional engineering materials because of their high specific stiffness, high specific strength, high damping and low coefficient of thermal expansion. The Glass Fiber reinforced Plastic (GFRP) composites are extensively used in many applications such as power plants, Waste and waste water, etc.These GFRP application fields need the machining opportunity like drilling, milling, cutting off, etc which has increased for its development. However the industries faced difficulties to
V.Chockalingam 1, M.Gnanasekar 2, N.Muthukrishnan 3
1,2 - Under graduate student, Department of Mechanical Engineering,Sri Venkateswara College of Engineering, Sriperumbudur – 602 105, Tamilnadu,India
3- Assistant Professor, Department of Mechanical Engineering,Sri Venkateswara College of Engineering, Sriperumbudur – 602 105, Tamilnadu,India. E-mail :mk@svce.ac.in
Abstract
In recent years, composite materials are finding increased applications in many engineering applications, and subsequently, the need for accurate machining of composite has increased enormously. Knowledge acquired in machining of ductile materials is not suitable for composites. In the present study, Glass Fiber Reinforced Plastics (GFRP) is machined in medium duty lathe with Poly crystalline Diamond (PCD) of 1600 grade inserts. Various parameters are measured such as Surface finish and power consumed by main spindle. Optimum parameters are determined from graph. By using optimum parameters tool wear was studied for about 25 minutes. Result provides some useful information. Machining with PCD gives good surface finish at higher cutting speeds with medium depth of cut and feed. Scanning Electron Microscopic (SEM) images also shown.
Key words: GFRP, Turning, PCD, power consumed, surface finish, tool wear
Introduction
Composite materials are continuously displacing traditional engineering materials because of their high specific stiffness, high specific strength, high damping and low coefficient of thermal expansion. The Glass Fiber reinforced Plastic (GFRP) composites are extensively used in many applications such as power plants, Waste and waste water, etc.These GFRP application fields need the machining opportunity like drilling, milling, cutting off, etc which has increased for its development. However the industries faced difficulties to
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