An output-only modal analysis (OMA) approach is presented to obtain the direct frequency response function (FRF) at the tip of the tool in micromilling setups. White noise input is provided using acoustic excitation and the resulting vibrations are measured using a laser Doppler vibrometer (LDV). Autoregressive (AR) identification is used to extract the natural frequencies and damping ratios of the structural modes of the milling setup, and mass-sensitivity analysis is used to obtain modal stiffness values. The accuracy of the tool tip FRFs that are constructed using OMA is verified by comparing them against the FRFs that are measured using impulse hammer tests. The direct FRF at the tool tip is an essential component in predicting and avoiding excessive and unstable vibrations in milling operations, and the presented approach provides a practical method for the direct measurement of the tool tip FRF in micromilling where the application of traditional hammer tests is not possible.
Skip Nav Destination
Article navigation
March 2018
This article was originally published in
Journal of Micro and Nano-Manufacturing
Research-Article
Output-Only Modal Analysis of Micromilling Systems
K. Ahmadi
K. Ahmadi
Department of Mechanical Engineering,
University of Victoria,
Victoria, BC V8W 2Y2, Canada
e-mail: kvahmadi@uvic.ca
University of Victoria,
Victoria, BC V8W 2Y2, Canada
e-mail: kvahmadi@uvic.ca
Search for other works by this author on:
K. Ahmadi
Department of Mechanical Engineering,
University of Victoria,
Victoria, BC V8W 2Y2, Canada
e-mail: kvahmadi@uvic.ca
University of Victoria,
Victoria, BC V8W 2Y2, Canada
e-mail: kvahmadi@uvic.ca
Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MICRO- AND NANO-MANUFACTURING. Manuscript received July 31, 2017; final manuscript received November 1, 2017; published online December 14, 2017. Assoc. Editor: Martin Jun.
J. Micro Nano-Manuf. Mar 2018, 6(1): 011006 (9 pages)
Published Online: December 14, 2017
Article history
Received:
July 31, 2017
Revised:
November 1, 2017
Citation
Ahmadi, K. (December 14, 2017). "Output-Only Modal Analysis of Micromilling Systems." ASME. J. Micro Nano-Manuf. March 2018; 6(1): 011006. https://doi.org/10.1115/1.4038434
Download citation file:
Get Email Alerts
Cited By
Effect of Laser Power and Diamond Tool Parameters for Micro Laser-Assisted Ductile Mode Material Removal on Fused Silica
J. Micro Nano Sci. Eng (March 2025)
Aerosol Jet and Inkjet Printing Methods for Die-Level Packaging of Custom MEMS Devices
J. Micro Nano Sci. Eng (March 2025)
Rapid Prototyping of Multiscale Flexible Printed Circuit Boards With NeXus, a Robotic Additive Manufacturing System
J. Micro Nano Sci. Eng (March 2025)
Related Articles
A Low-Cost and High-Resolution Micromachine Tool With Toggle-Based Mechanism
J. Micro Nano-Manuf (March,2015)
Simulation of Structural Deformations of Flexible Piping Systems by Acoustic Excitation
J. Pressure Vessel Technol (August,2007)
Unified Probabilistic Approach for Model Updating and Damage Detection
J. Appl. Mech (July,2006)
Theoretical and Numerical Determination of Low-Frequency Reverberant Characteristics of Coupled Rooms
J. Vib. Acoust (August,2015)
Related Proceedings Papers
Related Chapters
Acoustic Radiation Force Impulse (ARFI) Imaging: Fundamental Concepts and Image Formation
Biomedical Applications of Vibration and Acoustics in Imaging and Characterizations
Accuracy of an Axis
Mechanics of Accuracy in Engineering Design of Machines and Robots Volume I: Nominal Functioning and Geometric Accuracy
Structural Damage Detection by Integrating Neural Networks and Vibration Modal Analysis
International Conference on Computer and Automation Engineering, 4th (ICCAE 2012)