Drillability Studies of E-Glass: Polyurethane Foam: Vinyl Ester Sandwich Composites

作者：Rao R Vijayalakshmi; Manujesh B J^*; Umashankar K S; Aan M P Sham

来源：Transactions of the Indian Institute of Metals, 2012, 65(1): 71-75.

DOI：10.1007/s12666-011-0108-3

• Polyurethane foam
• Torque
• Cutting speed
• Sandwich composites
• Drilling

The present work is concerned with the effect of drilling parameters such as cutting force, torque, speed, feed rate on the quality of drilled holes of polyurethane foam-E-glass-vinyl ester sandwich composite structure. The quality of the drilled hole is critical to the life of the fasteners in sandwich structures. The sandwich structures are subjected to drilling, using HSS drill bits with different diameters of 3, 4, 5 and 8 mm at various cutting speeds of 550, 920, 1470 and 2300 rpm and the feed rates of 0.011, 0.022, 0.032 and 0.045 mm/rev using pillar sensitive drilling machine with the aid of drill tool dynamometer. The experiment revealed that the thrust force is influenced by the diameter and the torque by the feed rate. Four different grades of sandwich composites were selected for study and it is observed that at constant speed, the quality of the drilled hole increases with the increase in speed and tends to be poor as the diameter of the hole increases.

• 出版日期2012-2