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Experimental investigation on Ultrasonic Assisted Drilling (UAD)
Journal of the Brazilian Society of Mechanical Sciences and Engineering ( IF 2.2 ) Pub Date : 2021-06-17 , DOI: 10.1007/s40430-021-02969-8
Saber Saffar , Amir Abdullah

The goal of this research is to research how ultrasound-assisted drilling (UAD) can improve performance in oiler drilling. Supporting literature, the physics of the method is a reduction in both heat generation within the drilling gap (space between drilling bit and rock formation) and weight on bit (WOB) by reducing the friction. Hence, some theoretical analysis and experimental tests are administered to present the phenomenon of reduction in friction coefficient between two materials when ultrasound is employed. Friction tests are performed in another area of application different from drilling. The results show that using ultrasound caused dramatically reduction in both the normal and horizontal transporting loads of the silicon wafers. Around, 5 and 20 times decreasing vertically and horizontally forces, respectively, was observed when 10 W ultrasonic power was applied. In the second step, the influence of ultrasonic was investigated within the milling process. Experimental results prove that the quantity of machining forces in ultrasonic-assisted milling (UAM) is a smaller amount than in conventional milling (CM). It is observed that the decreasing of milling force in UAM to CM process is approximately 6% and 19% for a = 8 and 20 µm at N = 800 r/min, respectively. In the third step, the effect of using ultrasound-assisted vibrations when drilling during a sample of rock at ambient conditions was investigated. Vibrations are transferred to the drilling tool directly, and the drilling tool rotates and vibrates longitudinally at an equivalent time. The drilling force reduction was observed to be approximately between 7.8 and 10.6 times counting on the amplitude of the vibrations.



中文翻译:

超声辅助钻井(UAD)试验研究

这项研究的目标是研究超声辅助钻井 (UAD) 如何提高油轮钻井的性能。支持文献,该方法的物理原理是通过减少摩擦来减少钻井间隙(钻头和岩层之间的空间)内的热量产生和钻压(WOB)。因此,进行了一些理论分析和实验测试,以呈现使用超声波时两种材料之间摩擦系数降低的现象。摩擦测试是在不同于钻孔的另一个应用领域进行的。结果表明,使用超声波显着降低了硅晶片的正常和水平运输载荷。垂直和水平力分别减少约 5 倍和 20 倍,当施加 10 W 超声波功率时观察到。在第二步中,研究了超声波在铣削过程中的影响。实验结果证明,超声辅助铣削 (UAM) 中的加工力量小于传统铣削 (CM) 中的量。观察到 UAM 到 CM 过程中铣削力的降低约为 6% 和 19%a  = 8 和 20 µm,N  = 800 r/min,分别。在第三步中,研究了在环境条件下对岩石样本进行钻孔时使用超声波辅助振动的效果。振动直接传递到钻具上,钻具同时旋转和纵向振动。根据振动幅度,观察到钻孔力降低大约在 7.8 到 10.6 倍之间。

更新日期:2021-06-17
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