Tsib Qhov Kev Ntsuas Uas Txhais Tau Qhov Ntau Yam Ntawm Lub Tshuab Ntsuas Tensile

Ob lo lus hais txog lub tshuab kuaj tensile yuav zoo ib yam - tib lub peev xwm, tib qhov ceev, tib software - thiab tseem txawv ntawm peb feem ntawm qhov lawv tuaj yeem ntsuas tau tiag tiag. Qhov sib txawv yuav luag tsis muaj nyob hauv tus lej tseem ceeb.

Tsab xov xwm no teev tsib yam uas txiav txim siab seb lub tshuab puas haum rau koj cov khoom siv, raws li qhov kev txiav txim uas cuam tshuam rau qhov tshwm sim ntawm kev sim. Nws yog sau rau cov neeg yuav khoom sib piv cov kev muab, thiab rau cov engineers uas yuav tsum tiv thaiv qhov kev yuav khoom sab hauv.

Pib ntawm daim ntawv qhia koj xav tau tshaj tawm

Cov lus qhia txog lub tshuab yog sau los sib piv; cov ntawv qhia kev xeem yog sau los kom txais yuav. Yog li ntawd, qhov pib zoo yog nplooj ntawv kawg ntawm koj daim ntawv qhia yav tom ntej - tus qauv twg, tus nqi twg, kev kam rau siab twg.

Kev sim hauv chav kuaj mob rau kev ncab thaum tawg ntawm cov yas zaj duab xis raws li ASTM D882, kev nplaum ntawm daim kab xev raws li ASTM D3330, thiab kev sib zog ntawm cov ntaub woven raws li EN ISO 13934-1 xav tau peb lub tshuab sib txawv hauv kev xyaum, txawm tias tag nrho peb lub yog "kev sim tensile". Yuav ib qho.tshuab kuaj tensilekom npog tag nrho peb yam yog ua tau - tab sis tsuas yog tias tsib qhov kev teeb tsa hauv qab no tau teev ua ke.

1. Peev xwm yog ib qho ntau thiab tsawg, tsis yog ib tus lej

Lub tshuab 5 kN tsis raug rau 5 kN. Qhov raug tau txheeb xyuas dhau ntawm ib feem ntawm lub peev xwm, yog li lub load cell uas loj rau qhov siab tshaj plaws yuav tsis txhim khu kev qha ntawm cov zog uas cov yeeb yaj kiab thiab cov kab xev raug sim tiag tiag.

Lub zog siab tshaj plaws thiab lub zog ua haujlwm tsis tshua muaj qhov sib npaug. Ib daim zaj duab xis ntim khoom mos yuav tawg ntawm 30 N; tib lub hnab ntaub ntawm lub chaw kuaj mob yuav xav tau 2 kN. Yog tias ib lub sensor npog ob qho tib si, qhov kev sim qis zog nyob ze rau hauv qab ntawm nws qhov ntau, qhov twg qhov kev daws teeb meem phem tshaj plaws thiab lub suab nrov hauv pem teb pom tau hauv qhov nkhaus.

Feem ntau cov chaw soj nstuam siv tau zoo yog kom ua cov kev ntsuam xyuas ib txwm nyob hauv kwv yees li ib nrab sab saud ntawm qhov ntau thiab tsawg ntawm lub sensor, thiab tuav lub sensor thib ob, uas muaj peev xwm qis dua rau cov ntaub ntawv nyias. Thaum piv cov khoom muag, nug seb qhov ntau thiab tsawg siv tau yog dab tsi - tsis yog qhov siab tshaj plaws yog dab tsi.

2. Kev tswj ceev txiav txim siab seb koj cov ntaub ntawv puas sib piv tau

Cov polymers, zaj duab xis thiab cov nplaum yog viscoelastic: lawv lub zog ntsuas nyob ntawm seb koj rub ceev npaum li cas. Hloov qhov ceev ntawm lub taub hau hla thiab lub zog tev tawv, elongation thiab modulus txhua yam txav mus, yam tsis muaj dab tsi txog cov khoom hloov pauv.

Qhov no yog vim li cas cov qauv qhia txog tus nqi siab tas li es tsis yog qhov ceev nruab nrab, thiab yog vim li cas aLub tshuab computer servo tensile testingyog lub hauv paus rau txhua lub chaw kuaj mob uas muab cov ntaub ntawv sib piv. Lub tshuab tsav ceev lossis ib qho ceev tuaj yeem tsim tau tus lej; nws tsis tuaj yeem tsim tau tus lej tiv thaiv.

Kev tswj hwm servo kuj qhib cov hom ntau lub voj voog - kev ntxhov siab tas li, kev ntxhov siab tas li, kev nkag mus thiab kev so - uas tsis yooj yim sua rau ntawm lub tshuab uas tsuas paub yuav ua li cas mus ncig ntawm ib qho ceev. Yog tias koj cov khoom lag luam suav nrog gaskets, seals lossis geotextiles, qhov no yog qhov yuav tsum tau ua es tsis yog kev xaiv.

3. Cov tuav txiav txim siab seb koj tuaj yeem sim dab tsi

Lub thav duab yog dav dav; cov khoom siv thiab cov tuav yog cov uas ua rau lub tshuab haum rau ntaub, zaj duab xis, daim kab xev, roj hmab lossis ntawv. Ob lub chaw soj nstuam uas muaj cov tshuab zoo ib yam thiab cov tuav sib txawv yuav tshaj tawm cov txiaj ntsig sib txawv ntawm tib cov khoom siv.

Qhov ua tsis tiav feem ntau yog nyob ntawm lub puab tsaig, tsis yog nyob rau hauv cov qauv. Cov tes tuav wedge ua rau muaj kev ntxhov siab thiab ua rau tawg ua ntej lub sijhawm ze ntawm lub puab tsaig ntawm daim nyias nyias; cov tes tuav pneumatic nrog kev tswj hwm siab faib nws kom sib npaug; ua npuas ncauj lossis elastomer xav tau qhov tuav uas tsis txiav. Kev kuaj cov ntaub textile xav tau lub puab tsaig dav txaus los tuav tag nrho qhov dav ntawm cov qauv yam tsis muaj kev plam.

Rau kev sim tev tawv, qhov geometry tseem ceeb npaum li lub zog: 90° thiab 180° tev tawv yog kev sim sib txawv, thiab lub cuab yeej - tsis yog lub tshuab - teeb tsa lub kaum sab xis. Ib daim ntawv hais uas teev lub tshuab yam tsis teev cov khoom tuav yog ib daim ntawv hais rau ib nrab ntawm lub kaw lus.

4. Tus nqi kuaj thiab yam uas software tuaj yeem xa tawm

Lub zog siab tshaj plaws yog ib qho chaw xwb. Modulus, tus cwj pwm ntawm cov zis thiab cov duab ntawm cov kab tsis ua haujlwm txhua yam nyob ntawm seb cov ntaub ntawv tau raug kuaj ntau npaum li cas, thiab seb cov software puas tuaj yeem suav cov nqi tau los uas tus qauv thov.

Ob qhov kev kuaj xyuas uas siv tau. Ua ntej, seb cov software puas suav cov txiaj ntsig tau los ntawm lub hauv paus - elongation ntawm qhov kev ntxhov siab tshwj xeeb, secant modulus, lub zog kom tawg - lossis seb tus neeg teb xov tooj puas yuav tsum ua tiav tom qab hauv daim ntawv nthuav dav, uas yog qhov uas kev taug qab ploj mus ntsiag to. Qhov thib ob, seb cov ntaub ntawv raw puas tuaj yeem xa tawm nrog cov nkhaus tsis hloov pauv, vim tias daim ntawv qhia tsuas yog qhia txog kev txiav txim siab nyuaj rau tiv thaiv thaum tus neeg siv khoom tsis pom zoo rau ib pawg.

5. Kev ruaj khov thiab kev sib dhos ntawm lub thav duab

Ibtshuab kuaj thoob ntiaj tebLub thav duab uas tig mus rau hauv qab qhov hnyav ntsuas nws tus kheej zoo ib yam li cov qauv. Ntawm cov qauv khov kho qhov yuam kev me me; ntawm cov zaj duab xis ntev thiab cov fibers zoo, kev ua raws li crosshead thiab kev sib dhos tsis zoo tuaj yeem hloov cov txiaj ntsig ntau dua li qhov sib txawv uas koj tab tom sim ntes ntawm cov pawg.

Kev sib phim tsis pom nyob rau hauv daim ntawv qhia txog tus qauv, yog vim li cas nws tsim nyog nug daim ntawv qhia kev txheeb xyuas dua li daim duab kos. Rau kev tswj xyuas zoo niaj hnub, qhov yuav tsum tau ua yog me me; rau lub chaw kuaj mob uas muab cov ntaub ntawv lees paub,ISO 7500-1kev txheeb xyuas qib ntawm qhov qhia txog lub zog, nrog rau kev kuaj xyuas qhov tiaj tus thiab kev sib phim, yog pov thawj uas ib tus neeg thib peb yuav saib tiag tiag.

Peb yam uas ploj lawm ntawm feem ntau cov lus hais

• Daim ntawv pov thawj calibration thiab nws tus qauv siv. "Kev raug ± 0.5%" txhais tau tias me ntsis yam tsis paub tias nws tau txheeb xyuas dab tsi thiab dhau ntau yam twg.
• Cov khoom muag tag nrho. Tus nqi uas tsis suav nrog cov khoom siv uas koj xav tau tsis yog tus nqi qis dua.
• Cov nqe lus ntawm kev tso cai siv software thiab kev hloov kho tshiab. Daim ntawv tso cai ua haujlwm thib ob feem ntau yog qhov txawv ntawm ib tus neeg ua haujlwm thiab lub kaw lus zoo uas ua haujlwm tau zoo.

Daim ntawv teev npe luv luv rau kev yuav khoom

• Sau txhua tus qauv uas koj lub chaw kuaj mob yuav tsum tshaj tawm, tom qab ntawd kos txhua tus rau qhov ntau thiab tsawg ntawm lub zog, qhov ceev thiab hom tuav.
• Qhia ob lub sensors yog tias koj cov ntaub ntawv siv ntau dua li ib qho kev txiav txim ntawm qhov loj ntawm lub zog tawg.
• Yuav tsum tau tswj hwm servo thiab paub tseeb tias cov hom multi-loop suav nrog, tsis yog xaiv tau.
• Thov kom muaj kev qhia txog koj cov khoom siv, tsis yog rau ntawm cov qauv hlau ib txwm muaj.
• Xyuas kom tseeb tias daim ntawv qhia txog daim ntawv qhia no phim cov hom ntawv uas koj cov neeg siv khoom lossis lub koom haum lees paub xav tau.

Cov lus nug nquag nug