Ultrasound tsis muaj teeb meem thiab muaj txiaj ntsig zoo rau tib neeg.Thiab nyob rau xyoo tas los no, ultrasound tau dav siv hauv kev lag luam khoom noj.
Qhov tseeb, suab nthwv dej yog ib pawg ntawm lub suab, uas belongs rau mechanical yoj. Lub suab nthwv dej yog hais txog lub nthwv dej ntev uas tuaj yeem hnov los ntawm tib neeg lub pob ntseg, thiab nws cov zaus ntau yog 16hz-20khz.Sound nthwv dej hu ua infrasound thaum zaus qis dua 16Hz, thiab ultrasonic nthwv dej thaum zaus siab tshaj 20KHz.
Ultrasonic yoj muaj cov yam ntxwv hauv qab no:
- ultrasonic yoj tuaj yeem kis tau zoo hauv cov pa roj, kua, khoom, khoom yaj thiab lwm yam xov xwm.
- ultrasonic yoj tuaj yeem hloov lub zog muaj zog.
- ultrasonic yoj yuav tsim kev xav, cuam tshuam, superposition thiab resonance.
- Thaum ultrasonic yoj propagated nyob rau hauv cov kua nruab nrab, nws muaj peev xwm tsim muaj zog cuam tshuam thiab cavitation ntawm lub interface.
Ultrasound yog ib tug tswv cuab ntawm tsev neeg sonic.
Lub suab nthwv dej yog daim ntawv nthuav tawm ntawm cov tshuab kev co lub xeev (los yog lub zog) ntawm ib yam khoom.Vibration yog rov qab thiab tawm ntawm ib tug particle ze ntawm nws txoj hauj lwm equilibrium.Piv txwv li, thaum lub nruas raug ntaus, nws vibrates nce thiab nqis. Qhov kev vibration no taug kev hauv txhua qhov kev taw qhia los ntawm nruab nrab ntawm huab cua.
Ultrasonic nthwv dej hais txog lub suab nthwv dej uas nws qhov zaus tiag tiag yog ntau dua 20KHz, uas tsis tuaj yeem hnov thiab hnov los ntawm tib neeg hauv ib puag ncig ntuj.
Lub tswv yim ntawm kev siv ultrasound therapy:
Ultrasound kev kho mob yog ib qho tseem ceeb ntawm cov tshuaj ultrasound.Thaum lub sijhawm kho ultrasonic, lub zog ultrasonic yog siv rau cov kab mob ntawm tib neeg lub cev kom ua tiav lub hom phiaj ntawm kev kho tus kab mob thiab txhawb lub cev rov qab.
Nyob rau hauv lub ntiaj teb no, ultrasound yog dav siv nyob rau hauv kev kuaj mob, kho, engineering, biology thiab lwm yam liaj teb.Lub tsev ultrasound kho tshuab belongs rau daim ntawv thov ntawm kev kho mob ultrasound.
- engineering applications: underwater positioning thiab kev sib txuas lus, underground resource exploitation, thiab lwm yam
- Kev siv tshuaj lom neeg: shearing macromolecules, bioengineering thiab noob ua
- Daim ntawv thov kev kuaj mob: hom A, hom B, hom M, hom D, ob chav ua haujlwm thiab xim doppler ultrasound, thiab lwm yam
- Kev siv tshuaj kho mob: kho lub cev, kho mob qog noj ntshav, phais, extracorporeal lithotripsy, kho hniav, thiab lwm yam.
Ultrasound tsis yog tsuas yog siv dav hauv cov tshuaj, hauv xyoo tas los no, kuj tau siv dav hauv kev lag luam khoom noj.
ultrasonic txiav tshuab
Ultrasonic ncuav mog qab zib txiav Qhov kev txiav yog sib xws, zoo huv si thiab du.
Cov nyhuv ntawm ultrasonic txiav ncuav mog qab zib
Piv txwv li, ultrasonic txiav cov zaub mov: tsis xav tau ib tug ntse hniav, tsis xav tau ntau lub siab, yuav tsis txiav cov khoom ntug breakage, puas.Txiav riam nyob rau hauv ultrasonic kev co, kev sib txhuam kuj yog heev me me, cov khoom yog tsis yooj yim rau lo rau ntawm cov hniav.Rau khov, nplaum, elastic zaub mov txiav nyhuv yog pom tseeb, tshwj xeeb tshaj yog zoo. Txiav tib lub sij hawm, lub txiav ib feem ntawm cov ntaub so ntswg yog zoo meej rau fusion. cut.Ultrasonic tej tshuab yog ib yam khoom siv uas siv yoj zog rau txiav thiab machining.
Kev txiav tsoos: tsoos txiav siv rab riam nrog lub ntsej muag ntse los nias cov zaub mov kom txiav.Lub siab yog concentrated ntawm lub txiav ntug, thiab lub siab yog loj heev, tshaj lub shear lub zog ntawm cov zaub mov raug txiav, thiab molecular daim ntawv cog lus ntawm cov zaub mov yog rub sib nrug thiab txiav qhib.Vim hais tias cov zaub mov yog rub sib nrug los ntawm lub zog siab, txiav ntug ntawm cov khoom txiav yuav tsum muaj zog heev, thiab txiav cov khoom noj yuav tsum muaj zog heev. zoo, rau cov khoom noj nplaum nyuaj dua.
Yog li ntawd, piv nrog cov tsoos txiav, ultrasonic txiav cov txiaj ntsig ntawm cov khoom noj yog pom tseeb, uas kuj yog vim li cas vim li cas txoj kev no tau dav siv hauv kev lag luam khoom noj khoom haus. Ntxiv rau kev txiav cov zaub mov, lwm yam kev siv hauv kev lag luam zaub mov yog: ultrasonic tu, ultrasonic assisted extraction, ultrasonic sterilization, ultrasonic emulsification, ultrasonic crystallization, ultrasonic ziab, thiab lwm yam.
