Results 111 to 120 of about 151 (141)
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Joint identification of modular tools using a novel receptance coupling method
The International Journal of Advanced Manufacturing Technology, 2007The demand for modular tools in machining operations has been increasing, owing to their flexibility, reduced cost, and productivity improvements when compared to solid carbide tools. Essentially, modular tools are interchangeable cutters that are assembled together with a joint. The effects of joint dynamics are often neglected when characterizing the
S. S. Park, J. Chae
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Transactions of the Korean Society for Noise and Vibration Engineering, 2023
One Mook Kim, Jin Oh Kim
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One Mook Kim, Jin Oh Kim
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Improved Sensor Data Utility Through Receptance Coupling Modeling
Design Engineering, 2004This paper describes compensation for scaling and frequency distortion errors arising from non-ideal sensor placement on mechanical structures. The mathematical approach is based on receptance coupling techniques for assembly dynamics prediction and offers a hybrid method where measured and modeled component frequency response functions, or receptances,
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Identification of Toolholder-Spindle Joint Based on Receptance Coupling Substructure Analysis
Applied Mechanics and Materials, 2013Stiffness identification of toolholder-spindle joint is a basic work for machine tool dynamic research. In this paper, an identification method based on receptance coupling substructure analysis is described. Once the frequency response functions of the toolholder, the spindle and the toolholder-spindle assembly are obtained, the analytical stiffness ...
Li Jun Zhai, Xiao Lei Song, Li Gang Cai
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Identification of multiple joint dynamics using the inverse receptance coupling method
Journal of Vibration and Control, 2014A lot of effort has been put into accurately modelling virtual prototypes prior to physical building of structures, in order to minimize cost and time while improving performance. However, there are often significant discrepancies between the dynamics of virtual prototypes and actual physical structures, which are mainly caused by improper joint ...
Majid Mehrpouya +2 more
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Receptance Coupling Study of Tool-Length Dependent Dynamic Absorber Effect
Manufacturing Engineering and Materials Handling Engineering, 2004The chatter-free material removal rate during high-speed machining of aluminum using long, slender endmills is limited by the cutting system dynamics, which changes with the tool length. Traditional stability-lobe diagrams that predict the maximum allowable chip width for a given spindle speed are determined using the tool point frequency response ...
Timothy J. Burns, Tony L. Schmitz
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Coupled loop antenna built in roof tile for UHF-TV reception
IEEE Antennas and Propagation Society International Symposium 1997. Digest, 2002TV reception antennas, such as Yagi array, installed above the roof are damaged by birds, storm and snow, and are not suitable for the house design. Beam tilted coupled loop antennas built in the roof tile were proposed to overcome these problems by the authors. This antenna element has a tilted beam pattern with very wide frequency bandwidth.
K. Nakada, H. Arai
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Quasi-dispersion of air-coupled ultrasonic signal for angle-dependent reception
Measurement, 2019Abstract In many practical applications of air-coupled ultrasonic inspection, the accurate direction of the wavefronts of the ultrasound in air is unknown. Thereby, the wave may reach the transducer at an oblique incidence angle. It may lead to misinterpretation of the waveform of the measured wave.
Zichuan Fan +3 more
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Broadband proximity-coupled and dual polarised microstrip antenna for DTH reception
1999 IEEE MTT-S International Topical Symposium on Technologies for Wireless Applications (Cat. No. 99TH8390), 1999A novel antenna concept for DTH (direct to home) reception contains a parabolic reflector and a LNB (low noise block converter) in microstrip technology. The horn of the conventional LNB is replaced by a microstrip antenna. This contribution concentrates on the design and realisation of broadband proximity-coupled antennas for dual linear polarisation ...
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Efficient receptance coupling approach for tool-tip dynamics identification
2015The efficiency of high-speed milling process is often limited by the occurrence of chatter. Active control systems seem to represent a suitable solution for chatter suppression, because of their high adaptivity. Nevertheless, efforts still need to be made for the definition of the best control strategy. Accurate simulation tools are therefore necessary,
MONTEVECCHI, FILIPPO +3 more
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