Results 101 to 110 of about 1,458 (251)

Comparative Study of Chatter Detection Methods for High-Speed Micromilling of Ti6Al4V [PDF]

open access: yes, 2015
Chatter detection is necessary to carry out stable machining. It is extremely critical in high speed micromilling (spindle speeds >100,000rpm) where the limited tool stiffness and small fluctuations in the cutting forces can lead to dynamic instability ...
Singh, Ramesh   +2 more
core   +1 more source

How weather got its words: a history of meteorological English – Part 1: Old English to the Age of Discovery

open access: yesWeather, EarlyView.
The English language is a gargantuan, gluttonous beast. It has become extraordinary among its peers in its powers of assimilation – such that we rarely consider the diverse origins of the words we use. In this two‐part paper, we will explore these origins, including the Pontic‐Caspian steppe, the British Empire, latinophone scientists and a TV show. We
Kieran M. R. Hunt
wiley   +1 more source

Suitable habitat of Himalayan wolf in Upper Mustang, Annapurna Conservation Area, Nepal

open access: yesWildlife Biology, EarlyView.
Decades ago, the Himalayan wolf Canis lupus chanco, a genetically distinct sub‐species of the gray wolf Canis lupus, faced persecution by local communities in the Nepalese Himalayas. Recently, wolf populations have returned and recolonized, sparking concerns about conflicts over livestock depredation, and emphasizing the urgent need for comprehensive ...
Deu Bahadur Rana   +5 more
wiley   +1 more source

Chatter Simulation and Detection in CNC Milling [PDF]

open access: yes, 2017
A key feature to maintaining a safe and efficient machining operation is the avoidance of unstable vibrations of the cutting tool, commonly called chatter. This thesis explores chatter simulation and a new chatter detection algorithm developed for use in
Shepard, Jonathan Steven
core   +1 more source

Maximizing the detection probabilities of dusky grouse for population monitoring

open access: yesWildlife Biology, EarlyView.
Despite its status as a game species in the western USA, rigorous monitoring of dusky grouse Dendragapus obscurus populations is limited. Obtaining an adequate number of observations for effective population monitoring of dusky grouse is challenging due to difficult‐to‐reach montane habitats, cryptic behaviors, and limited personnel, time, and funds at
Elizabeth A. Leipold   +2 more
wiley   +1 more source

Online Incipient Chatter Detection Based on Once-Per-Revolution Sampling and Dynamic Threshold Variant [PDF]

open access: yes, 2019
International audienceOnline incipient chatter detection is a crucial task to improve surface quality, reduce dimensional errors, and protect the cutting tool and machine tool in the high-speed milling process. Since variable background noise in measured
Zhao, Yanqing   +7 more
core   +1 more source

An effective investigation of chatter prediction system on Al6061 alloy in an end milling process

open access: yesJournal of Engineering and Applied Science
Visual examination of the surface topography, in conjunction with the other sensors, may confirm the existence of chatter. Online chatter detection during real machining operations is possible with the use of sensors, and the presence of noise in their ...
Trivikrama Raju C   +3 more
doaj   +1 more source

Development of optimized methods for unbiased dusky grouse population monitoring using real and simulated data

open access: yesWildlife Biology, EarlyView.
Rigorous state‐wide monitoring programs are lacking for dusky grouse Dendragapus obscurus, a North American species of forest grouse with relatively low detectability that is found in coniferous and mountainous areas in the western United States and Canada.
Elizabeth A. Leipold   +2 more
wiley   +1 more source

Chatter Detection Using Vibrational and Acoustic Emissions in Turning Process [PDF]

open access: yes, 2013
Chatter vibration is a longstanding problem for machining industry. It lowers both surface finish quality and life of cutting tool. In this study, real time chatter vibration detection system is designed and tested experimentally.
Çizmeli, S. N.   +4 more
core   +2 more sources

A review of machining chatter detection and suppression research

open access: yesJixie qiangdu
As a typical self-excited vibration phenomenon in metal cutting processes, chatter leads to deteriorated machining surface quality, manifested by texture fluctuations, increased dimensional errors, and compromised surface integrity.
CHEN Haoran   +5 more
doaj  

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