Taw qhia rauUltrasonic Piezoelectric Transducers
Ultrasonic piezoelectric transducers muaj cov khoom sivotal siv thoob plaws kev siv rau kev siv tshuaj, kev ntsuas kev ua haujlwm (ndt), thiab cov kev ntsuas kev ntsuas kev ua kom puas. Ntawm qhov tseem ceeb ntawm cov transducers dag cov khoom siv nquag, cov khoom siv piezoelectric, lub luag haujlwm rau kev hloov kho hluav taws xob (acoustic) thiab lwm yam. Qhov kev hloov dua tshiab no tau tiav los ntawm cov nyhuv piozoelectric, qhov twg los hloov cov khoom siv hluav taws xob rau kev siv hluav taws xob, lossis hloov, hloov cov duab thaum hluav taws xob tau thov.
Lub caij nquag: Lub plawv ntawm lub tshuab hloov khoom
Muaj pes tsawg leeg thiab ua haujlwm
Lub caij nquag yog linchpin ntawm ultrasonic transducers, ua haujlwm los ntawm kev siv cov ntaub ntawv polarized nrog cov hluav taws xob txuas nrog rau kev tawm tsam cov ntsej muag. Thaum ib daim teb hluav taws xob tau thov, cov polarized molecules dlhos nrog lub tshav pob, ua ib qho kev hloov pauv ntawm hluav taws xob. Raws li cov khoom siv tawm los, cov ntaub ntawv no tsim hluav taws xob teb, piv txwv li cov nyhuv piezoelectric nyhuv. Lub zog ua haujlwm ntawm kev hloov hluav taws xob hauv cov suab hluav taws xob rau hauv cov suab nrov thiab tau txais cov vuam thaiv ua rau cov khoom siv tseem ceeb rau kev siv ntau yam.
Tsoos piezoelrictric khoom: Quartz thiab Barium Titanate
Cov Kev Tsim Kho Mob Thaum Ntxov
Ua ntej lub dominance ntawm piezoelectric ceramics, cov ntaub ntawv xws li Quartz (Sio2) thiab Barium Titanate (Batio3) tau siv nyob rau hauv transducers. Quartz, ib txwm tshwm sim siv lead ua, tau nyiam rau nws ruaj khov thiab muaj txiaj ntsig hauv xyoo 1940, muab cov khoom siv tseem ceeb tshaj plaws hauv xyoo 1940, muab cov khoom siv hluav taws xob tseem ceeb hauv xyoo 1940 Cov ntaub ntawv no tau pua txoj kev rau niaj hnub piezoelectric ceramics, tab sis tseem qee zaum tau hais txog cov muaju hauv ndt.
Dominance ntawm txhuas zirconate Titanate (PZT)
Cov khoom thiab cov txiaj ntsig
Nyob rau xyoo 1960, cov lus qhia ntawm txhuas zirconate titanate (PZT) Revolve ultrasonic transducers. Pzt los ua cov khoom siv ntawm kev xaiv vim nws cov khoom siv zoo tshaj plaws, yooj yim ntawm kev tsim khoom, thiab versatility hauv cov qauv thiab qhov loj me. Pzt ua haujlwm tau zoo thaum muaj hluav taws xob tsawg thiab tuaj yeem tiv taus kub txog 300 ° C, ua rau nws zoo tagnrho rau siab - Kev Ua Yeeb Yam Hloov. Cov ntaub ntawv no tau nthuav dav hauv kev lag luam wholesale thiab kev tsim khoom ntawm transducers, qhov twg cov tuam ntxhab kev cia siab thiab raug nqi - ua tau zoo.
Cov Khoom Siv Tawm: Piezo - Polymers thiab Composites
Innovation thiab cov ntawv thov
Tshaj li cov tsoos ceramics, cov ntaub ntawv tshiab xws li piezo - polymers thiab composites yog nce traction. Polyvinylidene fluoride (PVDF), ib qho zoo tshaj plaws piezoelectric polymer, muaj cov txiaj ntsig zoo hauv cov ntawv sau lossis cov ntawv hloov pauv. Piezo - Txiaj Ntsig, feem ntau ua ke sib txuas nrog cov polymers, txhim kho cov tshuab hluav taws xob thiab hluav taws xob, muab cov kev ntsuas cov kev xav tau. Cov ntaub ntawv no tseem ceeb hauv kev tsim cov ntsiab lus tsim khoom, qhov uas yoog tau thiab precision yog qhov tseem ceeb heev.
Acoustic impedance txuam nrog transducers
Cov ntsiab cai thiab cov txuj ci
Rau ultrasonic tsis tau txais txiaj ntsig zoo ntawm transducer thiab lub hom phiaj nruab nrab, acoustic impedance txuam yog qhov tseem ceeb. Lub impedance mismatch ntawm piezoelectric ceramics thiab cov khoom nruab nrab, xws li huab cua lossis dej, tsim nyog siv cov khaubncaws sab nraud povtseg. Cov khaubncaws sab nraud povtseg, feem ntau muaj ntawm cov khoom siv sib xyaw nrog cov polymer matrix thiab cov hmoov hollow, ua kom zoo hloov hluav taws xob hloov. Kev impedance kev sib txuam yog qhov tseem ceeb hauv kev tsim hluav taws xob, cuam tshuam rau kev ua tau zoo thiab ua tau zoo.
Nkag siab txog cov qauv ntawm ultrasonic transducers
Cheebtsam thiab kev teeb tsa
Ultrasonic Transducers suav nrog ob peb lub ntsiab lus tseem ceeb: Theouselectric keeb, acousic sib txuam txheej, thiab damping txheej. Kev teeb tsa ntawm cov feem cuam tshuam rau cov khoom siv transducer ua haujlwm thiab rhiab. Lub thickness ntawm lub piezoeltric me correlates ncaj qha nrog cov zaus uas xav tau, nrog thinner cov yauv tau cov ntsiab lus siab dua. Cov chaw tsim khoom hauv lub chaw tsim khoom lag luam nyob rau hauv lub chaw tsim khoom lag luam yuav tsum sib npaug cov kev ntsuas no kom ua tiav cov kev xav tau rau txhua daim ntawv thov.
Tsim Qauv: Transmipter, tau txais, thiab kev hloov pauv
Zaus thiab ua kom zoo
Ultrasonic transducers tuaj yeem ua haujlwm zoo li transmitters, tau txais, lossis kev hloov pauv, txhua tus nrog cov qauv tsim tshwj xeeb. Cov transmitters tau zoo rau kev ua haujlwm ntawm zaus ua raws li cov sijhawm resignency, thaum lub sij hawm tau txais mus rau anti - resonant zaus rau kev txais tos. Transceivers ua haujlwm ntawm cov zaus no, muab kev ua tau zoo. Cov kev txiav txim siab tsim hauv kev lag luam wholesale Ntau Lawm ua kom pom tseeb ntawm kev ua haujlwm siab, rhiab, thiab tag nrho cov kev ua tau zoo thoob plaws cov xwm txheej sib txawv.
Kev siv thev naus laus zis innovations hauv cov ntaub ntawv piezoelectric
Lead - Dawb txoj kev xaiv thiab kev sib xyaw ua tiav siab
Tsis ntev los no thev naus laus zis txhim kho ua ntej ua ntej ib puag ncig kev ruaj ntseg nrog kev ua tau zoo. Lead - Dawb piezoelecric cov ntaub ntawv raug tsim los muab kev hloov pauv kev nyab xeeb rau cov tshuaj Puzt tsoos. Advanced composites, sib koom ua ke Nanotechnology, yog txhim kho cov khoom siv hluav taws xob ntawm cov ntaub ntawv piezoelectric. Cov kev hloov tshiab no tau ua tiav hauv cov teeb tsa los tsim cov transducers uas tau raws txoj kev tswj hwm nruj thaum xa cov kev ua haujlwm zoo.
Cov ntawv thov thiab yav tom ntej cov qauv hauv ultrasonic transducers
Ntau yam kev siv cov ntaub ntawv thiab cov thev naus laus zis
Ulducers ultrasonic muaj qhov dav dav ntawm cov ntawv thov, los ntawm kev kho mob kev ntsuas rau kev soj ntsuam kev soj ntsuam. Kev nthuav tawm thev naus laus zis, xws li cov kev daws teeb meem siab - kev soj ntsuam tiag tiag - lub sijhawm soj ntsuam, yog tsav lub siab xav tau. Toj siab yav tom ntej yuav pom kev nce kev sib xyaw ua ke ntawm cov thev naus laus zis thiab kev ntsuas cov ntaub ntawv, muab cov kev ntsuas ua haujlwm zoo thiab cov kev ntsuas. Cov neeg tsim khoom lag luam thiab cov neeg ua lag luam tau yoog raws li cov ncauj lus no, kom ntseeg tau tias lawv cov khoom sib dhos nrog cov kev xav tau kev lag luam hloov zuj zus.
Hansripe muab cov kev daws teeb meem
Hindagrogh tshwj xeeb kom muab cov kev daws teeb meem rau ultrasonic transducer xav tau, ua rau muaj kev siv tshuaj thiab kho mob. Los ntawm kev siv cov ntaub ntawv siab thiab txiav - Ntug thev naus laus zis, tshuaj xyuas ua haujlwm siab dua - Cov kev xav tau zoo uas tau raws cov neeg xav tau tshwj xeeb. Peb txoj kev mob siab rau kev hloov kho tshiab thiab cov neeg siv khoom txaus siab uas peb yog cov khoom lag luam tsim khoom hauv kev lag luam, muab cov khoom lag luam txhim khu kev qha los ntawm peb lub xeev - ntawm - Cov vev xaib - - Lub Hoobkas tsim duab -. Kev ntseeg siab Hansav teb rau koj kev lag luam wholesale ultrasonic transducer yuav tsum tau, qhov twg kev ua tau zoo, qhov twg yog tau lees paub.
