TheApplicationofHoIographiclnterferometry...

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Transcript of TheApplicationofHoIographiclnterferometry...

Page 1: TheApplicationofHoIographiclnterferometry ...machls.cc.oita-u.ac.jp/kenkyu/kei/bunken/data/masatsu/M062.pdf · 845OHzwasobtamed・TTlediscwassettomtaにat5IソmjTL Usinga症AC”だcoXdersjmultaneous礎cordingswere

`C-F剛,山FM|尻cル沢Y106Zg30805TheApplicationofHoIographiclnterferometry

totheStudyofDiscBrakeNoise

⑦/W,

( 勺

John、.Fieldhouse

TheUniVersityofHudde前eId

PeterNewcomb

LoughbmoughUnjv.

madiamem1modebutwithawavefbTmwlUchmoves 、rdativetoboththediscand厚ound・medetectionofUlesevibrationchamcteTisticsisadi重culttaskandevmwithcarethp巳由alwaystheIiskU1atsomeeventヤvmnotlmebeenandcipatedandlhedatawmnotbe熊cordedifdi-②tedetectiondevices…employed.

ABSTRACT

、Anexperimentalilwesd鴎tionofpassengercaェdiscbTakenoisel四sbeenmadeusingthedoublepulsedlaseTholo厚aphictechnjque,deveIopedtoanowshnultmeous

-鷹cordh喝of…eorthO印aphicvisualimagesofavibmpngbrakesystem・Mecl過mcalmeasurememsofpaェame[erssuchasdiscsm企cesmiLtorqUebpad“nections,pI已ssm巳and

r:Y;!;iii雲Ii1i慧織i;ii皇i豊繊;:ivibratiomalchamctensticsofanoisybmkeshowthediscto beinabeuldingmodewjthdjame江almodes・Thepadissegn

-tovibraLeinavanetyofmodessuchasbendmgbto庵ionandoftenacombh辺dmofbothanddmpadendOu[teris

:showntomakeas噂UncantcomibutiontobrakesystemlnoiSe・AsemSofhologJ園msofthebrakeemimngmstan

inXgnnitteuItnoiseandthenacondnuousnoiseshowUnatthe dscwavefbmDisnotstadonalyandthatitismovingwih Z色specttobodlthecaUiPerandth巳disc.F、喝emoにmentlsshowntotakeplacewhenasing1ehologmmisviewedmm diffbr巴ntposition3whjchpmvidessupportingevidencethat

,thew已爬fbmlisnotstadonalyinspace・Most定centtestsshowthatthewavefbZmdoesrotateaboutthediscatamte

-equivaleJmothe日eqUencyofvibramndividedbythe,dhmemlmodeord“

Theprccessmakesuseofholo印aphicintmbmme画ybaprccesswhichl週sprovedmibmladvejnthepast(l2tol4Landwiththeaidofstmtegica11yplacedmmrswholebody magesofthe回mLsideandtopviewofthebTakesy百temarerecordedsimunaneously、Smj國巫eLmirmrsallowfbrtheTUddenpendso[thepistonpadtobeincludedwihjmhe visualhublm3non

2EXPERIMENm4LDETATIR

ATとveS、塗ttyPeCaniPeTblminga1筐3.m垣and江aiEngabuUnenLwasnttedcnanassemblyaJldmountedonang mamaJmerresemblmgU画tinacaエTTUetestngshowninFigurelisdes垣nedsuchmatthe1muddeassemble超hddIigidatthemoun唾poimsofthesusp団Sm恥stesZ力喀andconmlannamdyctanowingthevibmUJ喝systemtomovenatumny、ThesuspeTmompointhasbeenJ印lacedbyasubstandalpinwhichisclampedinpositionwheTごastheotherpoints率mountedonpjvotedtap亡pinstogivemeclmmcalinte餌tyandavoidsvibmtionale歴c巴duetoshaffe1画面n便電

mednvewasse1ectedtoprovideasmoothhWtregaJdless ofspe巳dinoldeTtoavoidanyextemalvibmtionsbdngimposedintothesystem・TbaccommodaZeUUsI巴quiⅡ巳mentabrushlessDCsewomotorisusedandthjscombinedwitha douUe歴duction厨poly-veeo回、酉nmssiouu8ivesanoutpukspeedof2釦z/mindowT1toZeminanin6JmLdyvaェiableandlwe嵐blemamer・Finalcolmectiontolhehmbshan通bywayofadoubleunjveTsaljmmtwhichavoidsanymemaI bendinglbr℃esbeiJ喀甘aⅡ酉mi塵dtothehmcUdeassembly・

LaIgemhro応、造showTLinFig画造2,tothenghtandabovethebU3keassemblytoanowfbTU正巳eonhogonalviewsofmesystemOobemecoTdedsimultaneousbl・Sm型ler途etKTmmrs画cusedtoanowfbmdditionalviewh喝oftheemdsofthepistonpadandotherim3gesatthebackoflhesystem.

織INTRODUCTION 「

し.-.

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133

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app主mtUlalthepresenceofthecylindgronmehmerpadhaSas尊亟cantsd丘と、】喝e歴c[

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I`W電鷺鯏粥欝雛雛鑑蹴襯;wnssuspectedlhattheT⑫wasacouplingofthelmmml 舵quenciesoftheindividualpartswhenth可韮close

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peakamplimdeofthegenemtednois自画ldifthepusesPacing応se[tbrhalflhepeTiodofUmeDthentheo丘bndingcCmponentwinhavethemaximImmumberofGingesonthe 塵ulUngholO厚nm・IfthmthepeTiodbetweenpulsesiSreduceditcanbeexpectedthatthenumbemf嵐J喝eswould傘o鷹duceonthecomponemLmisapproachwasadoptedtoanaly5eUlewpdcal7850Hz6eqUenqltodetenmne

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5ハ、CHANICALRECORDINGSOFCONTINUOUSNOISE.

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7WAVEFORMMOVEDmNT WiUlintemUttentnoiseitmustbes亡essedU2atitmaybe亜as、画bleto鱈sumed画tthenodeposidon進bdJ壇p5xednatUle5画rtofeachno座iEm麺onandEU1ez己fbにouUy印w面唱mBmpT巳ssion山at由cwnvelbnnismoⅥⅡ喝Bec創醒eofd由possibn町mru1eThwesdgaHonswp己madeofacmUtmmusnodg垈亙h画箇亜一

INVESTTGATIONS

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…shownin同日Ⅲ配12(a9whichBg曰mindica摩UmtnotouUydoesUlevm泥fbmUmoに館htWetothedLcbImmLo

にhRiVeOOeamLIt画nOtaSmtiOmn'稲VeSmCeitSPOSidOn画Bembovmyncr酉itapm造mVeUh咽vmvesincethc8mpliUdCLJsosemtovnIy・Itm山tbenotedth8tthemttwqmPide麺Cs、己3,'四vev己Ty3im血rnodeQ5xh喝3画.

,WhenmeaBmimBlhemowmEnItheTewasaneedlolIHke imoaccouJltthecasewh匂亡lhewavemByhavemcvedmoにlhamonch81fpitch(lm6Ihormtationsimceitigan8

diameteTmodeofvibmUon).T1Uswasdetennmedbynodng lhent唱eBJ喝lesontheuimofthed進cBs5eeninIhetopviewofthefminte可fbm厚nmmotshowTMomaximisediscdet8n).Ach…eimaJ喝lewouldindicateaphBseshiftoTmovementofhalfanodepitcILInallcasestheTewasn⑥ plmseslUflwhichmeaI唾thewaVehadeilheTmovedlhe

色stBncepにsentedinthemblcaboveorthatthewavehadmovedBt1eastonenodepitclL43o,PeTIimeincTpmentin BddidouutotheabovedisplBc巳menLIfthhweTethec8seUlenlhewavewouldbeIC⑱。】喝Btamteor854de毎Ceヨ似swhichr巳、造squ■8,画tionormoreIhBntwiceUle

陸qumcy.

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meaboにtest3.WithinteTmittemtmdcontinuousnolse・

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w面sneces8aⅣto3dectadammwhicb■lmownnotto

move,such四mcpndsofoneonhepads,Acondnuo山non8cmges色bUshedatlO750HzwilhIhed遇crotBdJ咽anticLock冨内seatlOⅥ/mhLthehSごP山espBロエ垣wBssctatl四】f昨pe耐odofv化mdon47113,8」tdimBgcs…oTdedatmcmBasmgd」ayintewHLofamumd3脾.FmmphotogmP殖ofme『己congmctedhologmms,asshowninF尊亜13(whichshowrmlyevpyoUu臼rにc、四回ction),itwnspo3BibIelomea8umed随avpp3gmtatiomlmovemmtofthcantmodesfbr-hincT■mmtofdelay・Itwas8ssumedthatthewav壱fbTmmovedanticIockm3ewithlhedisc・TheUme

dLhyw西detemfned6mnthebserpulseノ丘已quenqに己g=Qmp化ttedagBhmdLcmodcmovcmmtGsshowTlinF垣14.丁1旛B1opeofdxe…phgivesmemにofmovemmtBs20四dB淳eewhjchcompames色vomblywiuUthemueof2,07脾ヅ。e伊PcrthCwnにfbmOmmteSaMhe8層memted犀qUemcydMdedbWhedmme位almodeom句,1344虎econdT1Us℃isaho81mwnlbTcompaIisouuonthesamegmphandis

semtovmylittienomIheに3t函Ultamedeぴこeofmov巳mmt【breachhnagehasfbUow己mtnblel:

8CONCLUSIONS

msBtudym6BhownUmtthediscmodei8alwaysd血mebalandUmtitmmtBsaboutthcd心cwitha錠quencyequivalenttothevibmtion歴qUencydWidedbythediscmodeord可.

P口剴s迫1m画sewasonenfbundbbeclosetolhennh0,1

犀quemcicsbfthcdiscmdpad.N碗sepmpE可画iIymaythemfbuEbelinkedtothecoup“ofthenamalBequenqes ofIhemdividuaJpaItswhEntheyareclosek面e1h句(8,10&'9.Th造indica瞳thattheinmductionorasymmebyintolhemtoTmaybeasolutiontoinhjbittheibumationof symmet㎡cal凸mnemlmode8ofvibmtjonBndUletmdencytogpnem蛇noisebaconclusionにachedbyN画hwn吋(IDandLangmdNewcomb(11)withtheirsmdyo「dJumbFnk昼

綱nwns化undmatpadvitmtioncBnmakea乱gmjlicanlcon団budontoUlenoi8ctemdencyofabmkc5y5tem.

Holo2mphicinteTfとmmeセycanBssbtinvisudisb喝lhemodesofvibmnoninanoisybE曰kesystemandinaddiIionOo凸sphcementcan印vcsomcimdicationofplmseandd血石ctimofdrpbcemmt.

Tab粕XRe劃血bsoravp己gEdmdnodemovcmentfbreachd而旛dehyhtc定mmL

GenemnylhepadSVibmtelOoouto「phasewiUulhedisc whichcausesthe・toPhat・secuonorthedscIobedispIaccd m・pha3ewiththed血c、

gACXNOWLEDCEMENTS

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11.LANGAM・andNEWCOMB

hwesd8FmonintoDnmBrake l0REFERENCES

No.C38コ“I,EAECconib矼已、“onNew

DevdcpmemsinPowem3mandChass遊画喝inc、Ⅱ喝,S⑪asbouエ9,1989.

12.PELSXEAamHAPPEA・VibmtionAnalysisbyDoublePulSedLaseTHO1ography”SAEPaperNo、770030,De亡Cit1977.

13.FELSKEA,HOPPEG・andMATTTIAIH

1mOscmatic殖inSqueah喝DiskBI召kes‐AnalysisofVmratmgModesbyHolOg戸aphiclntpfbzcmeセy耐SAEPaperNo780333oD巴mitllだ.

14.FELSKEA,HOPPEQandMATITIAIH・nASmdyofDmmBmkeNo蜂byHoloPaplucInh江f:mmmy卿SAEPaperN0.800,1,1180.

15.FIELDHOUSEJ.D・andNEWCOMBTP・RAn

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VehideDynamibsandPowemamEngm琵血唱一EAECNo.,10“』umBl”1,sセョsbomg

ldFIELDHOUSEJD・mdNEWCOMBTP,Tnle

TとdmiqN』eofHologrHplmclnt面fbmme江yusedtolmlesdgateuScBr3keNoise”‐西thSUV画JUbnee

lntBmanonalSymposmmonAmomotive庇clmolo風andAutomationOSAm)‐nLaseTAppUcationsfbrdue Automotjvelndusセァ'Flolmcebltalybl-5Junel91Zref 兎1023、

17.FIELDHOUSEJ.、、amNewcCmbTP・pAZ1

mesUgationmtomscBrakeNoiseUSmgHolOi廟aPlUclnteエfbmmeせy卿Autotechl”LNECBimm1gimm.

1- LAMARQUEPM”BIzk巳SqUeakTTleExpmencesof

MBnu色ctuエ造rSandOpemto毎andSomePTごuエTunaエyExperimentsI,RepoItNo,8500日1J四titutionofAubomobUeEJtgdneers,ReseaⅡdlandSt8ndnェds Committ龍,1135.

BASFORDP・ILandTWISSS.B・nPmpertiesofHicdonMate配i21sn・TheoryofVHbmtiorlinBmakesnASME・征、遇.VoL80,19麹”402斗10.

SPURRRT・pATheoryofB垣keSquearoLMechEAuto,Div・PICC,No.11%1/、pp33斗0.EARLESamCHAMBERSjoDiScBrakeSqUealNoise GmemtionPredicth喝itsDependemcyonSy百temPar2met率hlcludingDampingPIntematiohalJouエmlofVehicleDes噂Wol8,no54,5,6pp5335521987・JARⅥSRP・andMILLSB.”VibrationslnducedbyDIyHiction鰍PICC,IMeclEll63-64,voll78ptlN0.32pP847B6d

NORITIM・RqmscBXHkeSqu色al-ATheolPticalMode1"MIRAReseaエchRgpoエtNQI972/5. MILLNERN."AnAnalysiSofD造cB戯eSquearSAEPaperNO780332Demitllだ.

MURAKAMIH.,TSUNDAN,andKm4MURAT,徳A

SmdyConcemedwithaMechamsmofD由cBmke

SquealpSAEPaperNQ841233Michi臼3,1984.LILESG”AnAnaly5isofnscBrakeSqUealUSing FmiteE1ementMethods"SAEPaperNo、811150,11m・NISH[WAXIM.,HARADAH.,OKAMURAHand

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