Nkawom 
we tebea horow .
1. wɔde ato nipadua no ase, a ɛma nnyigyei a ano yɛ den a ɛba fam no nya nkɔso .
2. trunk ase, asiw tae dede ne resonance .
3. engine hood ne firewJapan area, a ɛma engine noise isolation tumi tu mpɔn .
4. inner layer of door and side panel sheet metal, a ɛtew resonance so na ɛma kar no nyinaa yɛ komm .
aguade ho nkyerɛkyerɛmu .
saa automotive vibration damping sheets (a wɔsan frɛ no damping pads anaa shock absorbing plates) yi yɛ butyl rubber ne aluminum foil a wɔabom ayɛ, a composite loss factor yɛ ≥0.25 na ɛyɛ density a ɛyɛ ≥2.3g/cm3. wɔayɛ no pɔtee sɛnea ɛbɛyɛ a ebetumi asiw wosow ne dede a wɔde fa so wɔ dade a wɔde ayɛ ntamadan mu no ano, na wɔde di dwuma kɛse wɔ afã horow a ɛtaa wosow te sɛ kar apon, fam, fender, ne nnua a wɔde di dwuma mu. aduru no wɔ conformability pa, nsu a ɛko tia, ne anti-aging tumi, a ɛyɛ mmerɛw sɛ wɔde bɛhyɛ mu na ɛboa ma wɔde twitwa a wontua hwee na wɔde curved surface instJapanation. ɛdenam kar no nvh adwumayɛ nyinaa a ɛyɛ papa so no, ɛma kar no mu kommyɛ ne karka/trabea osuahu no yɛ kɛse.
aguade no dwumadi .
high damping ne vibration absorption adwumayɛ: butyl rubber layer no twetwe na ɛpete wɔ krataa so dade vibration ahoɔden, titiriw no ɛfata ma mmeae a wosow a emu yɛ den (te sɛ fenders, chassis);
multi-level noise reduction synergy: sɛ wɔde di dwuma de ka nnyigyei a ɛbɔ ho ban ho kotoku ho a, ebetumi atew dede a efi mmeae ahorow pii te sɛ engine dede, dede a ɛkɔ so wɔ kwan so, ne dede a mframa bɔ no so kɛse;
abatade a ɛtra hɔ kyɛ ne nea ɛko tia onyin: a ɛnyɛ den ne nea ɛnyɛ nsu a ɛregu bere a wɔde di dwuma bere tenten, a nsu a ɛyɛ fɛ ne ɔhyew a ɛko tia;
ɔdansi a ɛyɛ mmerɛw na ɛyɛ mmerɛw: ɛwɔ akyi nhyehyɛe a ɛyɛ ne ho adhesive, wobetumi de ahyɛ dade a ɛho tew so tẽẽ, a ɛboa ma wotwitwa nneɛma a wontua hwee na ɛyɛ nea ɛfata ma kar ahorow.
adwumayɛ ho nkyerɛkyerɛmu .
composite loss factor: ≥0.25 (a ɛyɛ adwuma yiye) .
nneɛma a ɛyɛ den: ≥2.3 g/cm3 (a ɛyɛ compactness a ɛkorɔn ne vibration absorption tumi a eye kyɛn so) .
ɔhyew a ɛyɛ adwuma: -40°c ~ 80°c .
ɔdansi hyew a wɔkamfo kyerɛ: 10°c ~ 40°c .
nneɛma a wɔde yɛ nhyehyɛe: butyl rɔba + aluminium foil + a ɛyɛ nhyɛso a ɛyɛ mmerɛw a ɛyɛ ade a ɛyɛ mmerɛw + krataa a wɔde gyae .
bere tenten a wɔde di dwuma no gyina hɔ pintinn: ɛko tia onyin, nsu ntumi nkɔ mu, ɛko tia, ɛnyɛ nea wɔde ngo hwɛ, na ɛnyɛ nea ɛyɛ hu bere a wɔde ahyɛ mu awie no .
nneɛma a atwa yɛn ho ahyia a wɔdi so: nkyerɛaseɛ a wɔtumi sesa no a ɛne nneɛma a atwa yɛn ho ahyia ho mmara te sɛ rohs, reach, pahs, tsca, ne nea ɛkeka ho hyia.
beae a wɔde akwammisa krataa kɔ .
ɛfata ma sheet metal vibration damping ne dede reduction systems a ɛwɔ kar ahorow ahorow mu. nneɛma a wɔtaa de di dwuma ho nsɛm a wɔtaa yɛ no bi ne:
kar apon/trunk lids mu: nipadua no resonance a ɛtew so ne ɔpon ano aduru a ɛrebɔ;
faako ne fender mmeae: ɔkwan so dede a ɛtwetwe ne wosow a ɛba fam bere a woreka kar ntɛmntɛm no;
wheel hubs/rear wheel arch gyinabea: tae abo-splash dede a esiw ne wosow transmission;
engine compartments ne anim fasuo structures: engine wosow a wɔde kɔ kar no mu no so tew;
chassis ne enclosed side wJapan structures: kar no nyinaa a ɛyɛ komm a ɛma ɛyɛ komm na ɛyɛ den sɛ ɛbɛgyina.
