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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51446

Title: Interpretation of force signals into mechanical effects in vibrationassisted drilling of carbon fibre reinforced plastic (CFRP)/aluminium stack materials
Authors: Chunliang Kuo
Chihying Wang
Mengkun Liu
Contributors: 國立臺灣海洋大學:商船學系
Keywords: CFRP/Al stack
Vibration drilling
Thrust force
Statistical analysis
Empirical mode decomposition
Date: 2017-07
Issue Date: 2018-11-29T02:43:59Z
Publisher: Composite structure
Abstract: Abstract: This study investigates if the vibration frequency and amplitude, coupled with cutting parameters could reduce the thrust force in the drilling of CFRP/Al stacks. In the ANOVA and main-effect plots, the contributions (PCRs) of the vibrating amplitude were high (CFRP: 80.14%, Al: 48.14%). When drilling in the steady states, the interactions between the employed vibration parameters with the machine tool and the fixation system were interpreted using the empirical mode decomposition (EMD) and Fourier spectrum with appreciable results (CFRP: R2 = 84.1%, Al: R2 = 93.9%). When drilling in the CFRP layer at the cutting onsets, the resolved spectrums perfectly matched the mechanical effects in the cutting stage (19.5–1367 Hz), with chattered-induced vibration (683.6 and 1367 Hz). When drilling of the Al layer, the damping-induced vibration led to an increase in the background noises (39.1–117.2 Hz), whereas the frequencies produced by the spindle remained largely the same.
Relation: 179 pp.444-458
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51446
Appears in Collections:[商船學系] 期刊論文

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