Ultrasonic Phased Array
Lub tswv yim tseem ceeb ntawm ultrasonic phased array thev naus laus zis los ntawm radar electromagnetic yoj phased array thev naus laus zis. Phased array radar yog tsim los ntawm ntau cov ntsiab lus radiating txheej txheem nyob rau hauv ib qho array. Los ntawm kev tswj lub amplitude thiab theem ntawm txhua lub caij nyob rau hauv lub array kav hlau txais xov, cov hluav taws xob kev taw qhia ntawm electromagnetic nthwv dej tuaj yeem hloov kho los ua kom lub zog hloov tau yooj yim thiab ceev ceev tsom thiab scanning radar beam nyob rau hauv ib qho chaw. Lub ultrasonic phased array transducer yog tsim los ntawm ntau yam ywj siab piezoelectric wafers. Lub tshuab hluav taws xob tswj thiab ua kom zoo siab rau txhua chav wafer raws li qee txoj cai thiab lub sijhawm los kho thiab tswj txoj haujlwm ntawm kev ua kom pom tseeb thiab kev coj ua kom pom tseeb.
Ultrasonic phased array yog kev sib txuas ntawm ultrasonic sojntsuam wafers. Ib tug xov tooj ntawm piezoelectric wafers yog teem nyob rau hauv ib tug tej yam kev faib, thiab ces txhua wafer zoo siab rau successively raws li ib tug predetermined ncua sij hawm. Lub ultrasonic nthwv dej emissions los ntawm tag nrho cov wafers tsim ib tug zuag qhia tag nrho wavefront, uas yuav ua tau zoo hauv av tswj cov duab thiab kev taw qhia ntawm lub transmission ultrasonic beam (wavefront) yuav paub lub scanning, deflection thiab focusing ntawm lub ultrasonic beam. Nws muab lub peev xwm ntau dua li ib qho lossis ntau qhov kev sojntsuam rau kev txiav txim siab cov duab, qhov loj me, thiab kev coj ua ntawm kev tsis sib xws.
Ultrasonic phased array nrhiav tshuab siv ntau lub ntsiab lus ntawm cov duab sib txawv los tsim thiab tau txais cov kab hluav taws xob ultrasonic. Los ntawm kev tswj lub sijhawm ncua sij hawm sib txawv ntawm txhua lub ntsiab lus hauv cov khoom siv hluav taws xob kom xa (lossis tau txais) pulses, tuaj txog (lossis los ntawm) ntawm lub suab tsis tuaj yeem hloov pauv. Cov theem kev sib raug zoo ntawm ib tug tej yam taw tes nyob rau hauv cov khoom realizes qhov kev hloov ntawm lub tsom xam thiab cov kev taw qhia ntawm lub suab beam, thiaj li mus paub lub scanning, deflection thiab focusing ntawm lub ultrasonic beam. Tom qab ntawd siv kev sib xyaw ua ke ntawm kev ntsuas tshuab thiab tshuab hluav taws xob kom ua tiav cov duab duab.
Qhov ib-dimensional linear array sojntsuam feem ntau yog siv, cov piezoelectric wafers yog teem nyob rau hauv ib txoj kab ncaj nraim, thiab lub suab tsom suab yog daim ntawv-zoo li tus, uas yuav tau txais ob-dimensional dluab ntawm tsis xws luag, thiab yog dav siv nyob rau hauv kev lag luam.
Thaum siv cov kev sojntsuam phased array txhawm rau txheeb xyuas cov welds, tsis tas yuav nquag txav mus los, sab laug thiab sab xis, ntawm ob sab ntawm cov welds zoo li ib qho kev sojntsuam ib txwm, thaum lub sijhawm cov array sojntsuam ua haujlwm linear scanning raws qhov ntev. weld parallel rau lub weld. Tag nrho ntim tshuaj xyuas ntawm welded pob qij txha. Cov txheej txheem scanning no tuaj yeem ua tiav los ntawm kev zawv zawg raws li qhov tseeb qhov chaw khiav nrog kev pab ntawm lub tshuab scanner nruab nrog lub array sojntsuam, lossis nws tuaj yeem ua tiav manually, uas tuaj yeem paub txog kev tshawb pom sai thiab muaj txiaj ntsig zoo heev.
