... wear from highly localized stress. In this study, the use of high-frequency vibration for potential application in micro/mesoscale forming has been investigated. A versatile experimental setup based on a magnetostrictive (Terfenol-D) actuator was built. Vibration assisted micro/mesoscale upsetting, pin...

... on computationally prohibitive techniques that limit their use in the aerospace industry. In this paper, a new dynamic model was developed to predict the vibrations of thin-walled pocket structures during milling while taking into account the continuous change of thickness. The model is based on representing...

...Hagay Bamberger; Saikrishnan Ramachandran; En Hong; Reuven Katz In this paper, we propose a method for inspecting machining chatter marks on automotive valve seats using image processing technique. Chatter or self-excited tool-workpiece relative vibration is unacceptable in the machining processes...

...T. Hussain; Z. Yang; A. A. Popov; S. McWilliam For assembly of rotating machines, such as machining tools, industrial turbomachinery, or aircraft gas turbine engines, parts need to be assembled in order to avoid internal bending of the geometric axis of the rotor to meet functional and vibration...

... equation. Then, the tooth passing period is precisely divided into the free vibration phase during which the analytical solution is available and the forced vibration phase during which an approximate solution is needed. To obtain the numerical solution of the integral equation during the forced vibration...

... experimental investigations on ultrasonic vibration-assisted (UV-A) pelleting of cellulosic feedstocks. It studies effects of input variables (ultrasonic vibration, moisture content, and particle size) on output variables (pellet density, stability, durability, pelleting force, and yield of biofuel conversion...

... the coagulation of a certain number of primary serrated teeth also happen to appear at the free or constrained edge of the chip, especially when the system enters into chatter. In order to identify the interaction of these chip instabilities with the prominent natural vibration of the machine tools system...

...Chandra Nath; Mustafizur Rahman; Ken Soon Neo In recent years, the ultrasonic elliptical vibration cutting (UEVC) technique has been found to be an efficient method for the ultraprecision machining of hard and brittle materials. During the machining at a given nominal depth of cut (DOC), the UEVC...

...M. P. Jahan; T. Saleh; M. Rahman; Y. S. Wong This present study intends to investigate the feasibility of drilling deep microholes in difficult-to-cut tungsten carbide by means of low frequency workpiece vibration-assisted micro–electro-discharge machining (micro-EDM). A vibration device has been...

... Simulation of Torsional-Axial Vibrations in Drilling ,” Int. J. Mach. Tools Manuf. 0890-6955 , 46 , pp. 2073 – 2085 . 10.1016/j.ijmachtools.2005.12.010 Voronov , S. A. , Gouskov , A. M. , Kvashnin , A. S. , Butcher , E. A. , and Sinha , S. C. , 2007 , “ Influence...

.... This work was supported by the National Science Foundation CAREER award under Grant No. CMMI-0547534 (Ozdoganlar). Roukema , J. C. , and Altintas , Y. , 2006 , “ Time Domain Simulation of Torsional-Axial Vibrations in Drilling ,” Int. J. Mach. Tools Manuf. 0890-6955 , 46 , pp. 2073...

... Morse potential to calculate the atomic interaction force between tip and sample on the vibration theory of SNOM. This study compares the edge effect of surface profile between the simulated measurement with experimental measurement; it verifies that the nanoscale simulative measuring model for SNOM...

...M. Eynian, Ph.D. Candidate; Y. Altintas This paper presents a chatter stability prediction method for milling flexible workpiece with end mills having asymmetric structural dynamics. The dynamic chip thickness regenerated by the vibrations of the rotating cutter and the fixed workpiece...

...Na Qin; Z. J. Pei; C. Treadwell; D. M. Guo Ultrasonic-vibration-assisted grinding (UVAG) or rotary ultrasonic machining has been investigated both experimentally and theoretically. Effects of input variables on output variables in UVAG of brittle materials and titanium (Ti) have been studied...

... considers the effect of tool vibrations at the present and previous spindle revolutions on the chip area, chord length, and force directions and is solved using Nyquist stability criterion. The penetration of worn tool flank into the finish surface is considered as a source of process damping. The effects...

.... However, some craters would still exist on the machined surface, which limits the further improvement of the surface quality of the machined workpieces. One possible solution is to apply external forces to workpieces by using high-frequency vibrations to smooth craters during melting and solidification...

... are experimentally verified in simulating milling of a gear box cover, and integrated to the virtual milling process system, which is capable of predicting cutting forces, torque, power, and vibrations within CAM environment. Martelotti , M. E. , 1941 , “ An Analysis of the Milling Process ,” Trans...

... the vibrations on the sensor to the measurement errors on the part is presented. Through experiments on a four-axis system, a relationship between sensor motion speed, sampling frequency, and measurement accuracy is derived. The results of the experiments are used to describe the selection of optimal operating...

...Niranjan Subrahmanya; Yung C. Shin This paper deals with the development of an online monitoring system based on feature-level sensor fusion and its application to OD plunge grinding. Different sensors are used to measure acoustic emission, spindle power, and workpiece vibration signals, which...

.... , 1960 , The Mechanics of Vibration , University Press , Cambridge, UK. Hurty , W. C. , 1965 , “ Dynamic Analysis of Structural Systems Using Component Modes ,” AIAA J. 0001-1452 , 3 ( 4 ), p. 678 – 685 . Ferreira , J. V. , and Ewins , D. J. , 1996 , “ Nonlinear...