Results 31 to 40 of about 1,458 (251)

A Hybrid Chatter Detection Method Based on WPD, SSA, and SVM-PSO

open access: yesShock and Vibration, 2020
As a kind of self-excited vibrations, chatter vibration is extremely common in end milling, especially in high-speed cutting processes. It affects the machining accuracy of products and decreases the processing efficiency of machine tools.
Erhua Wang, Peng Yan, Jie Liu
doaj   +1 more source

Chatter identification in turning process based on vibration analysis using Hilbert-Huang transform

open access: yesJournal of Mechanical Engineering and Sciences, 2020
In machining process, the increasing cutting depth is aimed to accelerate machining operations in a short time. However, the increasing cutting depth can cause chatter vibration at any time.
Agus Susanto   +4 more
doaj   +1 more source

Deep Learning for Chatter Detection in Machining

open access: yes, 2022
Abstract Deep learning unlike classical machine learning methods, automatically extracts features at a higher level and merges feature extraction and classification into a single structure, so it does not require a large number of tests and errors. This work presents a deep learning approach for detecting the phenomenon of chatter in machining.
Cheick Abdoul Kadir A kounta   +3 more
openaire   +1 more source

Some aspects about milling : expert system for cutting parameters selection and control designs [PDF]

open access: yes, 2006
Milling is a mechanical process which consist of the relative movement between feeding the work-piece and rotating the multitooth cutter, to remove material from the work-piece.
De la Sen, Manuel   +2 more
core   +2 more sources

Suppression of period doubling chetter in high-speed milling by spindle speed variation [PDF]

open access: yes, 2011
Spindle speed variation is a well known technique to suppress regenerative machine tool vibra- tions, but it is usually considered to be effective only for low spindle speeds.
Arnaud, Lionel   +9 more
core   +1 more source

Chatter Detection based on a Contact Sensor in Milling Operations [PDF]

open access: yes, 2021
Chatter vibrations during machining operations are large-amplitude self-excited vibrations, which result in the loss of physical contact between the workpiece and the tool.
Bachrathy, D., Hajdu, D.
core   +1 more source

The Bivariate Empirical Mode Decomposition and Its Contribution to Grinding Chatter Detection

open access: yesApplied Sciences, 2017
Grinding chatter reduces the long-term reliability of grinding machines. Detecting the negative effects of chatter requires improved chatter detection techniques.
Huanguo Chen   +6 more
doaj   +1 more source

Do you hear the people sing? Comparison of synchronized URL and narrative themes in 2020 and 2023 French protests

open access: yesFrontiers in Big Data, 2023
IntroductionFrance has seen two key protests within the term of President Emmanuel Macron: one in 2020 against Islamophobia, and another in 2023 against the pension reform.
Lynnette Hui Xian Ng, Kathleen M. Carley
doaj   +1 more source

An Evaluation Study of EMD, EEMD, and VMD For Chatter Detection in Milling

open access: yesProcedia Computer Science, 2022
In modem machining processes, chatter is an inherent phenomenon that hinders efficiency, productivity, and automation. Numerous methods have been proposed using analytical, computational, and artificial intelligence methods to detect and avoid chatter during milling.
Pelin Seyrek   +3 more
openaire   +3 more sources

Digital Apprentice for Chatter Detection: An On-line Learning Approach to Regenerative Chatter Detection in Machining via Human-Machine Interaction [PDF]

open access: yes, 2022
Regenerative chatter in machining, which is characterized by self-excited vibration, is a common process anomaly that limits productivity and part quality in machining operations.
Yan, Xiaoliang
core  

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