Effects of Super-Imposed, Low Frequency Vibrations on Drilling Processes

本项目将在低频振动钻井初步实验结果的基础上，充分探索振动运动叠加在钻井上的潜在现象。这种振动运动的影响将探索硬金属材料，包括硬化钢，不锈钢和钛，以及软材料，包括铝和铅。实验将使用不同几何形状和不同材料的钻头，以及油和水溶性润滑剂进行。研究将包括扭矩和推力、井眼质量、钻头-切屑界面的摩擦以及产生的切屑的形态特征。对振动叠加钻井的研究可以为这一过程提供基础知识，并大大提高钻井质量和生产率。研究结果也有助于理解其他振动叠加制造工艺。

9713865 Chandrasekar Based on the results of preliminary experiments on drilling with low-frequency vibrations, this project will fully explore the underlying phenomena that occur when vibratory motion is superimposed on drilling. The effect of this vibratory motion will be explored for hard metallic materials including hardened steel, stainless steel, and titanium, as well as for soft materials including aluminum and lead. Experiments will be conducted with drills having various geometries and made of different materials, and with lubricants of both oil and water soluble types. The investigation will include torque and thrust, hole quality, friction at the drill-chip interface, and the morphological characteristics of the chips produced. The study of vibration superimposed drilling could generate fundamental knowledge about this process and lead to substantial improvement in the quality and productivity of drilling. The research results could also help understand other vibration superimposed manufacturing processes.