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  • Articles: DFG German National Licenses  (2)
  • 2005-2009  (2)
  • 2007  (2)
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  • Articles: DFG German National Licenses  (2)
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  • 2005-2009  (2)
Year
  • 1
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Applied mechanics and materials Vol. 10-12 (Dec. 2007), p. 869-873 
    ISSN: 1662-7482
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: A new method of state recognition of milling tool wear was presented based on timeseries analysis and fuzzy cluster analysis. After calculating, verifying liberation signal of tool state,and analyzing cutoff property, trailing property, periodicity of the sample autocorrelation functionand partial autocorrelation function as well as estimating parameter of model. It can be decided thatdynamic data serial is suit AR(p) (autoregression) model. Taking p equal to 12 as a feature vectorextraction, based on the fuzzy cluster analysis the similarity relation between the feature vector ofthe tool working state and the sample feature vector was obtained. Working state of tool wear wasdetermined according to the similarity relation of feature vector. This method was used to recognizeinitial wear state, normal wear state and acute wear state of milling tool. The result indicates thatthis method of tool wear recognition based on time series analysis and fuzzy cluster is effective
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 334-335 (Mar. 2007), p. 289-292 
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Phase-stepping photoelasticity has been used to study the fragmentation of an E-glassfibre in epoxy resin and examine quantitatively the effect of a transverse matrix crack on the stresstransfer at an interphase. Unsized glass fibre was coated by plasma polymerisation with acrosslinked conformal film of 90% acrylic acid and 10% 1,7-octadiene. The micro-mechanicalresponse at the fibre-matrix interphase and in the adjacent matrix has been described in detail usingcontour maps of fringe order. From these, the interfacial shear stress profiles at fibre-break havebeen calculated
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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