Cov txheej txheem:

Dab tsi yog txoj cai ntawm kev sib xyaw rau cov khoom sib xyaw?
Dab tsi yog txoj cai ntawm kev sib xyaw rau cov khoom sib xyaw?

Video: Dab tsi yog txoj cai ntawm kev sib xyaw rau cov khoom sib xyaw?

Video: Dab tsi yog txoj cai ntawm kev sib xyaw rau cov khoom sib xyaw?
Video: Npau Suav li no Txhob coj mus tham qhia luag lwm tus 2024, Kaum ib hlis
Anonim

Txoj cai ntawm Mixtures yog ib txoj hauv kev rau kev kwv yees kwv yees sib xyaw cov khoom siv, raws li kev xav tias a sib xyaw Cov cuab yeej yog qhov ntim hnyav nruab nrab ntawm cov theem (matrix thiab dispersed theem) cov khoom.

Nyob rau hauv no txoj kev, yuav ua li cas koj nrhiav tau lub Young's modulus ntawm ib tug composite khoom?

Cov Young's modulus ntawm Composite yog muab los ntawm 'txoj cai ntawm kev sib xyaw' piv txwv li EC = EF VF + EM VM, ib (VM + VF) = 1 or VM = (1 - VF). Cov elastic modulus raws cov kev taw qhia fiber ntau tuaj yeem tswj tau los ntawm kev xaiv qhov ntim feem ntawm cov fibers.

Ib tug kuj yuav nug, ua li cas koj pom qhov ntom ntawm cov khoom sib xyaw? Qhov ntom ntom ntawm cov khoom sib xyaw

  1. Nrhiav qhov ntom ntawm tag nrho cov tebchaw (lossis cov ntsiab lus) hauv qhov sib tov.
  2. 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.
  3. Muab txhua tus lej los ntawm qhov ntom ntawm nws cov khoom sib txuas lossis cov khoom sib txuas.

Ua raws li qhov no hauv kev xav, koj yuav ua li cas nrhiav tau lub zog tensile ntawm daim duab sib xyaw?

Lub zog ntawm Aligned Nruam Fiber Composites

  1. Matrix Modulus (Em) = 5GPa; Tensile zog (> sm) = 120 MPa; strain ntawm yield = 0.024; strain ntawm pob txha (>em) = 0.1.
  2. smatrix(> ef) yog qhov kev ntxhov siab nyob rau hauv matrix ntawm lub zog uas cov fibers tawg.

Dab tsi yog qhov ntim feem ntau hauv cov khoom sib xyaw?

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.

Pom zoo: