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 Posted: Sun 4:13, 08 May 2011 Post subject: Abercrombie Deutschland Laminated board fault diag |
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Laminated board fault diagnosis method
5-order energy contribution of the former than the previous rate of 5-order frequency cell damage than the figure d 5 123 {5MODE energy contribution of the former than the 123 {5MODE soil before the 5-order rate of change rate of injury than in Figure 5 Vibration Engineering Unit No. 5 sauce Finally, draw the frequency table l Zhonggu the rate of change and shaded in Figure 1 in energy under each mode contribution ratio (Figure 6). Can be seen from the histogram,[link widoczny dla zalogowanych], the frequency rate of change of unit ratio and energy under each mode is basically the same ratio of contributions. [Conclusion] This established a composite laminated plate injury diagnosis of new methods of energy, this method only in the calculation of non-destructive plate under each mode of energy distribution, combined with injuries before and after the change-order natural frequency can be more convenient and accurately diagnose the location and extent of a small injury and a large number of experimental data,[link widoczny dla zalogowanych], calculations show that this method is feasible and effective. 2345MODE energy contribution rate than the reference ratio of change in 2345MODE ● 6 laps I shaded circle Injuries [1] whne, C. W,[link widoczny dla zalogowanych], andMaylum, B. D. : F. igensolutionSensitivitytoParametricModaltl1rhtj, d 4 Ya like h + P. 6, Pt, 50,1976. A 23 pm】】 33 [2] Cewley, and. Adam. 9, ED. : TheLroc shad onofDefectsinStructuresfT que Kun Yang 1MeasurementofNaturalF nine hiss. 8 ~-amAxatysle, VoJ, 14, No. 2,[link widoczny dla zalogowanych],】 979 [3] Hu column: composite layer and damage homes plate vibration dynamics modeling diagnostics, Northwestern Polytechnical University, Master Thesis, 1990】 February ANewEnergyDiagnosticMethodforDamageDetectionofCompositeLaminatedPlatesL-n-, throwing 6S cut (Northwe ~. ErnPolyt * chnicalUniversity) AbaeractFaultd ∞ bofcomlx ~ itematerialstructoreisin ~ easinglyfollowedwithgreatinterMLItba ~ tractivetodta ~ esize blood squirt bymEg, tl ~ ofvibrationtechnique + Inthispaper + an. wenergy held the _-o | ticTn paid delete b State fordamaSedetectionofeomlxtsiteMminat ~ plates. Thedam Nang gquantityandl ~ tloncll1beeasilyandaeo ~ atelyjudgedbyevaluatin8themod and lenergydisU ~ utlonOfundarnageccmpc ~ itelaminatedD1at swing andme ~ uringtheellen · frequencyreduction disappointed usedbythedamage. Animportantconclusionofthismethodisthattheratioofeachorderm0d | 1energy-∞ n Ⅱ jbut tenant ninoneelementordomainisu ugly ltotheratioofthechangerateofeacheisen-freq3aen ~ rapproximatelythe maggots meetementordomainisdamased. Ener & ydistriEttiondiagramsaregiv handsome f. r clock set ly friends, The coral ul-what ofglus ~ ativeexamplesandexperiments $ howthatthemethodpro ~ edbotheIfectiveandfeasible, k. ywor ~, compositemateri ~, laminated Hill tes,[link widoczny dla zalogowanych], Mtur home lfrequency. faultdiagnosis. mode2 ∞ I ●
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