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Video: Dab tsi yog qhov ntim feem ntau hauv cov khoom sib xyaw?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Fiber ntau ntim ratio, los yog fiber ntim feem , yog qhov feem pua ntawm fiber ntau ntim nyob rau hauv tag nrho ntim ntawm ib tug fiber-reinforced sib xyaw khoom. Thaum tsim cov polymer sib xyaw , fibers yog impregnated nrog resin. Muaj fiber ntau ntim feem feem ntau ua tau zoo dua mechanical zog ntawm lub sib xyaw.
Ib yam li ntawd, nws yog nug, dab tsi yog txhais los ntawm ntim feem?
Volume feem . Los ntawm Wikipedia, dawb encyclopedia. Hauv chemistry, cov ntim feem φi yog txhais raws li cov ntim los ntawm ib tug constituent Vi faib los ntawm cov ntim ntawm tag nrho cov ntsiab lus ntawm qhov sib tov V ua ntej sib tov: Ua tsis muaj qhov loj me, nws chav tsev yog 1; nws yog qhia raws li tus lej, piv txwv li, 0.18.
Ib tug kuj yuav nug, dab tsi yog fiber kev coj? Fiber ntau orientation hais txog qhov zoo tshaj plaws structural kev npaj ntawm ib tug neeg fibers nyob rau hauv txoj kev loj hlob thiab tsim khoom ntawm advanced composite cov ntaub ntawv (ACM) thiab fiber ntau - Cov khoom siv ntxiv dag zog (FRC). Feem ntau ACMs thiab FCMs yog tsim los ntawm ob lub ntsiab lus tseem ceeb: matrices thiab reinforcements.
Ib yam li ntawd, tib neeg nug, ua li cas koj pom qhov ntom ntawm cov khoom sib xyaw?
Qhov ntom ntom ntawm cov khoom sib xyaw
- Nrhiav qhov ntom ntawm tag nrho cov tebchaw (lossis cov ntsiab lus) hauv qhov sib tov.
- Hloov txhua lub ntsiab lus lossis qhov sib xyaw ua ke qhov feem pua ntawm qhov sib xyaw ua ke rau tus lej lej (tus lej ntawm 0 thiab 1) los ntawm kev faib los ntawm 100.
- Muab txhua tus lej los ntawm qhov ntom ntawm nws cov khoom sib txuas lossis cov khoom sib txuas.
Koj pom li cas feem pua ntawm ntim?
- Ib feem pua v / v tov yog xam los ntawm cov qauv hauv qab no uas siv milliliter ua qhov ntsuas qhov ntim (v):
- % v/v = mL ntawm solute/100 mL ntawm kev daws.
- Piv txwv:
- X % = 5.0 mL HCl / 100 mL ntawm kev daws.
- X/100 = 5.0/100.
- 100 X = 500.
- X = 5.0% % v/v.
Pom zoo:
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