Nyob rau hauv qhov xwm txheej, puav siv ultrasonic echolocation los nrhiav lawv cov tsiaj, thiab tib lub sijhawm, cov tsiaj txhu kuj tau hloov kho kev tiv thaiv - qee cov npauj tuaj yeem nqus tau ultrasonic nthwv dej los ntawm cov qauv zoo ntawm lawv cov tis kom tsis txhob muaj suab nrov qhia lawv txoj haujlwm.Nov yog thawj zaug uas cov kws tshawb fawb tau tshawb pom cov ntaub ntawv acoustic hauv qhov xwm txheej.Txawm hais tias npauj tis yog tsom rau ntawm ultrasonic tsis (qhov kev vibration zaus ntau dua 20,000 Hz), lawv cov ntsiab lus suab-absorbing zoo ib yam nrog txhua yam ntawm cov suab-nqus cov ntaub ntawv uas peb pom hauv peb lub neej, tab sis tom kawg kho cov qauv zoo sib xws rau qhov zaus. band (20Hz-20000Hz) nyob rau hauv kab nrog tib neeg hnov.Hnub no, cia peb tham txog NVH cov ntaub ntawv ua npuas ncauj.
Lub suab pib los ntawm kev co ntawm ib yam khoom, thiab yog ib tug nthwv dej tshwm sim uas propagates los ntawm ib tug nruab nrab thiab muaj peev xwm pom tau los ntawm tib neeg lub cev auditory.NVH hais txog lub suab nrov (suab nrov), kev vibration (vibration) thiab hnyav (harshness), uas lub suab nrov thiab kev vibration yog qhov ncaj qha hnov los ntawm peb, thaum lub suab nrov yog siv los piav qhia txog tib neeg lub cev kev xav ntawm kev co thiab suab nrov. .kev xav tsis xis nyob.Txij li thaum peb qhov no tshwm sim nyob rau tib lub sijhawm hauv kev vibration thiab sib cais, lawv feem ntau tau kawm ua ke.
Raws li pom nyob rau hauv daim duab hauv qab no, thaum lub suab nkag mus rau hauv cov khoom siv los yog qhov chaw ntawm lub acoustic structural tivthaiv, ib feem ntawm lub suab zog yog reflected, ib feem ntawm nws nkag mus rau hauv cov khoom, thiab ib feem ntawm nws yog absorbed los ntawm cov khoom, uas. yog, kev sib txhuam ntawm lub suab thiab qhov nruab nrab ib puag ncig thaum nthuav tawm lossis cuam tshuam ntawm cov khoom siv.Kev vibration, cov txheej txheem los ntawm lub suab zog hloov dua siab tshiab rau hauv tshav kub thiab poob.Feem ntau hais lus, txhua yam khoom tuaj yeem nqus tau thiab cuam tshuam lub suab, tab sis qib ntawm kev nqus thiab kev xav txawv txawv heev.
NVH cov ntaub ntawv feem ntau muab faib ua ob pawg: cov khoom siv suab nrov thiab cov khoom siv suab rwb thaiv tsev.Thaum lub suab nthwv dej nkag mus rau hauv cov khoom siv suab nrov, nws yuav ua rau huab cua thiab fibers hauv cov khoom vibrate, thiab lub suab lub zog yuav hloov mus rau hauv lub zog cua sov thiab ib feem ntawm nws yuav tau noj, ib yam li ntaus ib daim txhuam cev nrog ib lub suab. xuas nrig ntaus.
Lub suab rwb thaiv tsev cov ntaub ntawv yog cov khoom siv los thaiv lub suab nrov, ib yam li lub nrig ntaus lub thaiv thiab thaiv nws ncaj qha.Lub suab rwb thaiv tsev cov ntaub ntawv yog ntom thiab tsis ntxeem tau, thiab nws yog ib qho nyuaj rau lub suab tsis nkag mus rau hauv, thiab feem ntau ntawm lub suab zog yog reflected rov qab, thiaj li mus cuag cov nyhuv ntawm suab rwb thaiv tsev.
Foamed cov ntaub ntawv nrog cov qauv ntxeem tau muaj qhov tshwj xeeb zoo hauv kev nqus suab.Cov ntaub ntawv nrog cov qauv ntom ntom microporous txawm tias muaj lub suab rwb thaiv tsev zoo.Feem ntau NHV acoustic foams muaj xws li polyurethane, polyolefin, roj hmab resin, thiab iav.Ua npuas ncauj, hlau ua npuas ncauj, thiab lwm yam, vim muaj cov yam ntxwv sib txawv ntawm cov khoom nws tus kheej, cov nyhuv ntawm lub suab nqus thiab txo suab nrov yuav txawv.
Polyurethane ua npuas ncauj
Cov khoom siv polyurethane ua npuas ncauj muaj nws cov qauv sib txuas tshwj xeeb, uas tuaj yeem nqus tau ntau lub suab nrov nthwv dej kom ua tiav lub suab zoo nqus, thiab tib lub sijhawm muaj kev rov zoo siab thiab ua haujlwm zoo buffering.Txawm li cas los xij, lub zog ntawm polyurethane ua npuas ncauj tsis tshua muaj, thiab lub suab rwb thaiv tsev cov nyhuv tsis zoo, thiab nws lub suab nqus kev ua haujlwm yuav txo qis nrog lub sijhawm dhau los.Tsis tas li ntawd, kev kub hnyiab yuav tsim cov pa phem, uas tsis zoo rau ib puag ncig.
XPE / IXPE / IXPP polyolefin ua npuas ncauj khoom
XPE / IXPE / IXPP, chemically cross-linked / electronically cross-linked polyethylene / polypropylene ua npuas ncauj khoom, muaj lub suab nrov nqus, thermal rwb thaiv tsev, cushioning thiab kev tiv thaiv ib puag ncig, thiab nws cov qauv tsim npuas npuas zoo rau lub suab rwb thaiv tsev thiab txo suab nrov.Kev ua tau zoo heev.
roj hmab ua npuas ncauj
Foamed roj hmab yog cov khoom siv zoo NVH, thiab cov ntaub ntawv xws li silicone, ethylene-propylene-diene roj hmab (EPDM), nitrile-butadiene roj hmab (NBR), neoprene (CR), thiab styrene-butadiene roj hmab (SBR) zoo dua li yav dhau los. ob yam khoom., Lub ntom ntom yog siab dua, thiab sab hauv me me ntawm voids thiab ib nrab qhib cov qauv, uas yooj yim dua kom nqus lub suab lub zog, ntau dua nyuaj rau kev nkag mus, thiab ua kom pom lub suab tsis khov.
melamine resin ua npuas ncauj
Melamine resin ua npuas ncauj (melamine ua npuas ncauj) yog cov khoom siv suab nrov zoo.Nws muaj peb-dimensional grid qauv system nrog txaus qhib.Cov kev vibration tau noj thiab nqus tau, thiab qhov cuam tshuam yoj tuaj yeem raug tshem tawm zoo tib lub sijhawm.Nyob rau tib lub sijhawm, nws muaj ntau yam kev ua haujlwm thiab sib npaug zoo dua li cov ntaub ntawv ua npuas ncauj raws li cov nplaim hluav taws kub, rwb thaiv tsev kub, lub teeb yuag thiab kev ua haujlwm zoo.
ua npuas ncauj aluminium
Ntxiv cov additives rau molten ntshiab txhuas los yog txhuas alloy thiab xa mus rau lub foaming box, txhaj roj los ua kua ua npuas ncauj, thiab solidify cov kua ua npuas ncauj los ua ib tug hlau khoom.Nws muaj lub suab rwb thaiv tsev zoo, thiab kev ua haujlwm zoo ntawm lub suab yog qhov ua tau ntev, lub neej ua haujlwm tau zoo tuaj yeem ncav cuag ntau tshaj 70 xyoo, thiab nws tuaj yeem siv dua thiab rov siv dua 100%.
ua npuas ncauj iav
Nws yog ib qho khoom siv iav uas tsis yog xim hlau ua los ntawm cov iav tawg, foaming tus neeg sawv cev, hloov kho additives thiab foaming accelerator, thiab lwm yam, tom qab tau finely pulverized thiab uniformly tov, ces melted ntawm kub, foamed thiab annealed.
Hauv lub neej tiag tiag, feem ntau tsis muaj cov khoom siv uas tuaj yeem nqus cov suab nrov hauv ntau zaus sib txawv, thiab tsis muaj cov khoom siv tuaj yeem ua qhov tsis zoo hauv kev siv.Yuav kom ua tiav lub suab zoo dua, peb feem ntau pom kev sib xyaw ua ke ntawm cov acoustic foams saum toj no thiab lawv nrog hom suab nqus / suab rwb thaiv tsev cov ntaub ntawv los tsim ntau yam ntaub ntawv ua npuas dej ntxiv, thiab tib lub sijhawm kom ua tiav cov nyhuv ntawm cov khoom siv suab nqus thiab cov qauv suab nqus, kom ua tiav Lub suab nqus kev ua haujlwm ntawm cov khoom siv nyob rau hauv ntau zaus bands ntawm high zaus thiab tsawg zaus.Piv txwv li, cov txheej txheem sib xyaw ua ke ntawm acoustic ua npuas ncauj thiab cov txheej txheem sib txawv ntawm cov txheej txheem tsis-woven tuaj yeem siv tag nrho cov qauv peb-dimensional ntawm lub tom kawg kom ua tau zoo dua txo qhov kev vibration ntawm lub suab tsis muaj zog, tsim kom muaj peev xwm tsis kawg rau lub suab nqus thiab txo suab nrov;) ua npuas ncauj sandwich txheej cov khoom sib xyaw, ob sab ntawm daim tawv nqaij yog sib txuas nrog cov khoom siv fiber ntau, uas muaj cov khoom siv ntau dua thiab muaj zog cuam tshuam lub zog, yog li ua tiav kev poob siab zoo dua thiab txo suab nrov.
Tam sim no, NVH cov ntaub ntawv ua npuas ncauj tau siv dav hauv kev thauj mus los, kev tsim kho engineering, kev lag luam suab nrov txo, kev tsim tsheb thiab lwm yam haujlwm.
Kev thauj mus los
kuv lub teb chaws txoj kev tsheb thauj mus los hauv nroog tau nkag mus rau theem ntawm kev loj hlob sai, thiab cov suab nrov nrov xws li tsheb, tsheb ciav hlau, tsheb ciav hlau hauv nroog, thiab tsheb ciav hlau maglev tau nyiam ntau yam.Nyob rau hauv lub neej yav tom ntej, acoustic ua npuas ncauj thiab nws cov ntaub ntawv sib xyaw muaj peev xwm siv tau zoo hauv lub suab rwb thaiv tsev thiab suab nrov txo ntawm txoj kev loj thiab kev tsheb hauv nroog.
kev tsim kho
Nyob rau hauv cov nqe lus ntawm architecture thiab cov qauv, ntxiv rau kev ua tau zoo acoustic, cov ntaub ntawv muaj cov kev xav tau siab heev ntawm kev nyab xeeb, thiab nplaim hluav taws kub yog qhov taw qhia nyuaj uas tsis tuaj yeem hla.Ib txwm ua npuas ncauj yas (xws li polyolefin, polyurethane, thiab lwm yam) yog nplaim taws vim lawv tus kheej flammability.Thaum hlawv, lawv yaj thiab tsim cov tee dej.Cov nplaim hluav taws kub hnyiab yuav ua rau muaj hluav taws kub.Txhawm rau ua kom nws ua raws li cov cai thiab cov qauv tsim nyog, nws yog ib qho tsim nyog yuav tsum tau ntxiv cov nplaim hluav taws, ntau yam uas yuav decompose thaum raug kub ntawm qhov kub thiab txias, thiab emit ib tug loj npaum li cas ntawm pa luam yeeb, tshuaj lom thiab corrosive gases.ua rau muaj kev puas tsuaj loj thib ob thiab ib puag ncig muaj kuab paug.Yog li ntawd, nyob rau hauv lub tshav pob ntawm kev tsim kho, acoustic cov ntaub ntawv uas muaj nplaim retardant, tsis muaj pa luam yeeb, tsis muaj toxicity, thiab zoo hluav taws xob load yuav fim no zoo kev lag luam kev loj hlob lub sij hawm, txawm nws yog lub tsev lag luam xws li cov chaw ua si, xinesmas, tsev so, concert halls, lwm yam vaj tse nyob.
Kev lag luam suab nrov txo
Kev lag luam suab nrov yog hais txog lub suab nrov uas tsim los ntawm lub Hoobkas thaum lub sijhawm tsim khoom vim yog kev co, kev sib txhuam thiab kev cuam tshuam ntawm huab cua.Vim muaj ntau thiab tawg ua lag luam nrov nrov, hom suab nrov yog ntau nyuaj, thiab cov suab nrov tas mus li ntawm kev tsim khoom kuj tseem nyuaj rau txheeb xyuas, uas yog qhov nyuaj rau kev tswj hwm.
Yog li, kev tswj lub suab nrov hauv cheeb tsam kev lag luam tau txais kev sib xyaw ua ke ntawm kev ntsuas xws li suab nrov, suab rwb thaiv tsev, suab nrov txo, txo kev vibration, txo suab nrov, kev puas tsuaj ntawm cov qauv resonance, thiab cov raj xa dej suab nqus ntim, thiaj li los kho lub suab nrov rau ib qho. kev lees paub rau cov neeg.degree, uas kuj yog lub peev xwm thov cheeb tsam ntawm acoustic cov ntaub ntawv.
kev tsim tsheb
Lub hauv paus ntawm lub tsheb suab nrov tuaj yeem muab faib ua lub suab nrov ntawm lub cav, lub suab nrov ntawm lub cev resonance, lub suab nrov log tsheb, chassis suab nrov, suab nrov cua thiab suab nrov sab hauv resonance.Qhov txo qis suab nrov hauv chav tsev yuav ua kom muaj kev nplij siab ntawm tus neeg tsav tsheb thiab cov neeg nyob.Ntxiv nrog rau kev txhim kho lub rigidity ntawm lub chassis thiab tshem tawm qhov tsawg-frequency resonance cheeb tsam nyob rau hauv cov nqe lus ntawm kev tsim, kev tshem tawm ntawm lub suab nrov yog tsuas yog tshem tawm los ntawm kev sib cais thiab nqus.Los ntawm kev pom ntawm kev txuag hluav taws xob, cov ntaub ntawv siv yuav tsum tau hnav.Los ntawm qhov pom kev nyab xeeb, cov khoom siv yuav tsum muaj hluav taws kub thiab kub ua haujlwm.Lub advent ntawm acoustic ua npuas ncauj thiab ntau yam multi-functional composite cov ntaub ntawv muab tshiab possibilities rau kev txhim kho lub suab nrov kuj, kev nyab xeeb, kev cia siab, txuag hluav taws xob thiab kev tiv thaiv ib puag ncig ntawm lub tsheb.
Post lub sij hawm: Aug-17-2022