Keeb kwm ntawm cov khoom siv sib xyaw

Cov ntaub ntawv sib xyaw tau hloov pauv txoj kev peb tsim khoom. Los ntawm engineering marvels zoo li Burj Khalifa hauv Dubai rau cov khoom siv niaj hnub zoo li lub caij ski koj siv thaum lub caij ntuj no, cov ntaub ntawv sib xyaw tau ua rau muaj kev cuam tshuam loj rau lub ntiaj teb kev tsim khoom. Hauv tsab xov xwm no, peb yuav saib cov ncauj lus kom ntxaws txog keeb kwm ntawm cov ntaub ntawv sib xyaw, lawv hom, thiab lawv siv, nrog rau cov ntaub ntawv thiab cov ntawv txuas.

 

Kev paub ntxov tshaj plaws ntawm kev siv cov ntaub ntawv sib xyaw hnub rov qab mus rau tim lyiv teb chaws thaum ub, qhov chaw av nkos ntxiv nrog straw tau siv hauv kev tsim kho. Tom qab ntawd, cov Persians pib siv cov hneev sib xyaw thiab tuaj yeem tua cov xub ntxiv thiab muaj qhov tseeb dua li lawv cov yeeb ncuab. Kev siv cov ntaub ntawv sib xyaw txuas ntxiv mus rau ntau pua xyoo, nrog thawj cov khoom siv yas sib xyaw ua rau nws zoo li xyoo 1866 thaum Alexander Parkes qhia "Parkesine," uas yog hom yas ua los ntawm cellulose.

 

Nws tsis yog txog thaum xyoo 1930 thaum cov khoom siv niaj hnub sib xyaw peb paub niaj hnub no pib tshwm sim. Lub sijhawm no, cov ntaub ntawv zoo li Bakelite thiab polyester resins tau tsim. Bakelite yog thawj cov yas hluavtaws, thaum polyester resins tau siv los tsim fiberglass. Qhov kev sib xyaw ua ke ntawm cov ntaub ntawv no tau hloov pauv, vim nws tso cai rau lub teeb yuag, ruaj khov, thiab muaj zog cov khoom tsim, thiab pom sai sai pom nws cov kev siv hauv kev lag luam aerospace.

 

Thaum lub sijhawm tom qab Tsov Rog Ntiaj Teb Zaum II, kev siv cov ntaub ntawv sib xyaw tau nce nrawm, ua tsaug rau kev lag luam aviation xav tau cov ntaub ntawv muaj zog thiab hnyav hauv lawv cov dav hlau. Kev tsim cov fibers tshiab, qib siab hauv xyoo 1960 zoo li carbon fiber tau thawb cov ntaub ntawv sib xyaw ua ntej ntawm kev tsim khoom. Cov pa roj carbon fiber ntau tam sim no yog hom nrov tshaj plaws ntawm cov khoom sib xyaw ua ke, ua tsaug rau lawv lub zog, ruaj khov, thiab qhov hnyav. Niaj hnub no, cov ntaub ntawv sib xyaw pom muaj nyob hauv yuav luag txhua qhov kev lag luam, nrog rau lawv txoj kev siv los ntawm cov neeg siv khoom siv mus rau kev siv high-tech xws li kev ua tub rog thiab chaw tshawb nrhiav.

 

Hom ntawm cov khoom siv sib xyaw

 

Composite cov ntaub ntawv tuaj nyob rau hauv ib tug ntau yam ntawm hom thiab compositions. Plaub hom kev sib xyaw feem ntau yog:

 

1) Polymer matrix composites (PMCs): Cov no yog tsim los ntawm kev sib txuas cov khoom siv matrix xws li yas lossis roj hmab, nrog rau cov khoom siv fiber ntau xws li iav lossis carbon fiber. Qhov no ua rau muaj zog, hnav cov khoom uas tuaj yeem tiv taus cov khoom hnyav.

 

2) Hlau matrix composites (MMCs): Ua los ntawm kev sib txuas cov hlau xws li txhuas lossis magnesium nrog cov khoom siv ceramic zoo li silicon carbide. MMCs yog qhov zoo tagnrho hauv cov ntawv thov kub.

 

3) Ceramic matrix composites (CMCs): Cov no yog tsim los ntawm kev sib txuas cov ceramics nrog cov ceramic matrix. CMCs muaj zog heev ntawm qhov kub thiab txias thiab feem ntau pom nyob rau hauv aerospace kev siv.

 

4) Carbon nanotube-reinforced composites: Cov pa roj carbon nanotubes muaj zog heev thiab hnav thiab tuaj yeem siv los txhawb ntau yam ntaub ntawv, suav nrog plastics, hlau, thiab ceramics.

 

Kev siv cov khoom sib xyaw

 

Cov ntaub ntawv sib xyaw muaj ntau yam kev siv, los ntawm cov khoom siv niaj hnub mus rau kev siv high-tech. Qee qhov kev siv ntau tshaj plaws ntawm kev sib xyaw suav nrog:

 

1) Aerospace kev lag luam: Kev lag luam aerospace tso siab rau cov ntaub ntawv sib xyaw vim lawv lub zog thiab qhov hnyav. Cov ntaub ntawv no yog siv rau hauv dav hlau tis, fuselages, cav, thiab lwm yam.

 

2) Cov khoom siv: Cov khoom siv sib xyaw xws li fiberglass thiab carbon fiber yog siv rau hauv cov khoom xws li nkoj, caij skis, thiab tsheb kauj vab, muab kev ua tau zoo thiab ua haujlwm ntev dua li cov khoom siv ib txwm muaj.

 

3) Kev lag luam tsheb: Kev siv cov khoom sib xyaw hauv kev lag luam tsheb tau nce ntau xyoo dhau los, ua rau cov tsheb sib dua thiab siv roj ntau dua.

 

4) Kev tsim kho kev lag luam: Cov ntaub ntawv sib xyaw tau siv ntau dua hauv kev tsim kho, nrog rau lawv cov ntawv thov xws li kev txhawb nqa pob zeb los tsim cov txheej txheem insulated panels (SIPs).

 

Xaus

 

Hauv kev xaus, cov ntaub ntawv sib xyaw muaj keeb kwm zoo nkauj uas muaj ntau pua xyoo. Los ntawm straw-reinforced av nkos bricks nyob rau hauv ancient Egypt mus rau advanced carbon fiber composites nyob rau hauv niaj hnub era, cov ntaub ntawv no tau los ntev. Lawv tau pom cov ntawv thov dav dav hauv ntau qhov kev lag luam, nthuav tawm los ntawm cov neeg siv khoom lag luam mus rau cov tub rog high-tech thiab aerospace applications.

 

Cov evolution ntawm cov ntaub ntawv sib xyaw ua ke tau tshwm sim los ntawm kev tshawb fawb txuas ntxiv thiab kev tsim kho tshiab, uas tau coj mus rau kev tsim kho tshiab ntawm cov khoom sib xyaw nrog cov khoom tshwj xeeb thiab kev siv. Raws li peb txuas ntxiv ua kom peb nkag siab txog cov ntaub ntawv no, lawv cov ntawv thov tsuas yog loj hlob tuaj, ua rau muaj kev nce qib ntxiv hauv kev tsim khoom lag luam uas vam khom rau lawv.

 

Cov ntaub ntawv:

 

1. "A Brief History of Composites." Composites Manufacturing Magazine.

 

2. "Materials Science thiab Engineering: Ib Chav Kawm Thawj." V. Raghavan.

 

3. "Composite Materials for Aerospace Structural Uses." National Academies Press.

 

4. "Composites Manufacturing: Materials, Products, and Process Engineering." Sanjay Mazumdar.

 

5. "Carbon Fiber Composite Materials thiab nws daim ntawv thov." Toray Advanced Composites.

 

6. "Yuav ua li cas Composites ua." Composites UK.

 

7. "Composite Materials in Aerospace and Defense." Lub tuam txhab Boeing.

 

8. "Composite Materials in Automotive Applications." Science Direct.