Taw qhia ntawm ultrasonic qhov ntsuas ntawm kev ntsuas ntsuas
Ultrasonic amplitude feem ntau yog hais txog qhov ntau ntawm cov khoom siv ultrasonic welding. Qhov nyuaj ntawm kev ntsuas ntsuas nyob rau hauv lub qhov loj thiab me me amplitude. Feem ntau qhov ntau zaus muaj nyob nruab nrab ntawm 10kHz thiab 60kHz, thiab qhov dav li ntawm 1 ism txog 100μm. Vim tias qhov loj siab, nws dhau qhov ntau zaus ntawm cov ntsuas feem ntau. Qhov tsawg me me tso rau pem hauv ntej siab yuav tsum ntsuas qhov tseeb. Cov kev siv dav dav hauv kev ntsuas tsis muaj zog rau nws, yog li nws nyuaj rau kev ntsuas. Feem ntau, tsuas yog siv laser vibrometer tuaj yeem siv rau kev ntsuas, thiab cov txiaj ntsig zoo tuaj yeem tau txais. Txawm li cas los xij, cov cuab yeej ntsuas laser kev co yog kim thiab nyuaj rau kev ua haujlwm. Tsis tas yuav hais txog cov khoom lag luam dav dav, txawm tias cov kws tshawb fawb tshaj lij thiab cov qauv tsim cov khoom siv tsis tshua muaj, thiab nws yog qhov tsis yooj yim sua kom lawv tau siv dav.
Raws li peb txhua tus paub, rau txhua lub vuam ultrasonic, txawm tias nws yog ultrasonic yas vuam lossis ultrasonic hlau vuam, plaub yam yuav siv tau los piav qhia. Hauv lwm lo lus, cov txiaj ntsig ntawm ultrasonic vuam tsuas yog nyob ntawm plaub yam xwb, uas yog zaus, lub sijhawm, siab thiab qhov loj. Ntawm lawv, thawj peb qho tsis yooj yim los tswj, kho thiab pom. Ob lub tshuab khoom lag luam thiab cov neeg siv khoom siv nkag siab thiab mob siab rau lawv. Lawv tseem yog kev kho kom haum rau hauv kev ua haujlwm txhua hnub ntawm cov khoom siv. Lub amplitude (hloov chaw) ntawm ultrasonic kev co yog qhov taw qhia tseem ceeb ntawm cov khoom siv ultrasonic, thiab nws tseem yog qhov ntau ntawm lub cev uas yog * nyuaj rau ntsuas thiab * nkag siab yooj yim. Ntxiv rau cov kws tshaj lij thiab cov kws tshaj lij, cia nyob ib leeg ntawm cov neeg siv khoom siv, txawm tias feem ntau cov cuab yeej tsim khoom tsis quav ntsej txog nws ntau. Peb tau suav feem ntau ntawm phau ntawv qhia ntawm cov khoom siv ultrasonic random, thiab tsis tshua muaj lus piav qhia tsawg ntawm ultrasonic amplitude, suav nrog lub ntsiab lus ntawm lub cev ntawm lub peev xwm, kev tswj hwm thiab kev hloov kho ntawm amplitude, thiab kev sib txheeb ntawm cov amplitude thiab vuam zoo.
Qhov dav ntawm ultrasonic kev co ncaj qha sawv cev loj npaum li cas ntawm ultrasonic tso zis hluav taws xob, thiab tseem muaj feem xyuam nrog lub zog ntawm cov ntaub ntawv muaj feem xyuam thiab kev pab lub neej ntawm tag nrho cov tshuab. Txawm hais tias rau cov tsim cov khoom siv ultrasonic lossis cov neeg siv uas siv cov khoom siv ultrasonic, qhov tseem ceeb ntawm nws tsis tuaj yeem siv ntau dhau.
Txog ultrasonic kev co lub cev, los ntawm qhov pom ntawm lub zog hloov mus, qhov taw qhia tseem ceeb yog hu ua lub suab nrov ultrasonic.
I=1/2ρcω2ξ2
Ntawm lawv: ρ yog qhov ntom ntawm cov khoom; c yog qhov ceev ntawm ultrasonic kev nthuav tawm hauv cov khoom siv;
yog lub angular zaus;
ξ yog cov ultrasonic amplitude;
Pom tseeb, raws li lub zuj zus ultrasonic, lub zog ultrasonic nce exponentially hauv kev sib raug zoo squared.
Hauv cov txheej txheem vuam ultrasonic, yog hais tias qhov dav tsis dhau, vuam zog tsis txaus, thiab qhov chaw vuam yuav tsum tsis muaj welded nrees. Txawm hais tias lub siab nce ntxiv lossis lub sijhawm vuam sijhawm tau ntev ntev, tsis muaj ib qho zoo tshwm sim. Yog hais tias lub amplitude loj dhau, nws yuav ua rau dhau vuam, kua nplaum ntws lossis vuam hla. Ib yam li ntawd, txo lub siab lossis luv thaum lub sijhawm ua rau muaj kev cuam tshuam tsawg. Yog tias cov pwm tsim qauv tsis tsim nyog thiab qhov tsis muaj ntau faib tsis txaus, lub vuam yuav tsis sib luag thiab qhov zoo yuav raug txo kom tsawg.
Hauv kev tsim thiab ua cov txheej txheem ntawm cov khoom siv ultrasonic, yog tias lub tshuab kev co nrawm tsim nrawm dhau, qhov kev ntxhov siab sab hauv ntawm cov khoom yog sib txuam ntau dhau, dhau ntawm lub zog tensile thiab qaug zog lub zog ntawm cov khoom nws tus kheej, thiab qhov tshwm sim yog pwm, lub tshuab raj kub los yog lub tshuab hloov khoom tawg. Feem ntau hais lus, peb pom zoo kom cov neeg siv tswj cov qhov dav ntawm cov khoom sib xws hauv cov khoom tsim nyog thaum tsim qauv ultrasonic los xyuas kom meej tias lub kaw lus ultrasonic tuaj yeem ua haujlwm kom nyab xeeb thiab muaj kev ntseeg siab.
