Tensile Strength vs Yield Strength
Lub zog tensile thiab lub zog tawm los yog ob lub ntsiab lus tseem ceeb uas tau tham hauv engineering thiab khoom siv science. Lub zog tensile yog qhov ntsuas ntawm qhov siab tshaj plaws deformation ib yam khoom siv tau yam tsis muaj caj dab. Yield zog yog qhov ntsuas ntawm qhov siab tshaj plaws ntawm elastic deformation cov khoom siv tau. Ob lub ntsiab lus no tseem ceeb heev hauv kev ua haujlwm xws li kev tsim vaj tsev, kev tsim kho tshuab, khoom siv science thiab ntau yam haujlwm. Nyob rau hauv tsab xov xwm no, peb yuav tham txog dab tsi yield zog thiab tensile lub zog yog, lawv cov ntsiab lus, kev siv ntawm yield zog thiab tensile zog, qhov zoo sib xws ntawm ob, thiab thaum kawg qhov txawv ntawm yield zog thiab tensile zog.
Tensile Strength yog dab tsi?
Tensile lub zog yog cov lus siv rau qhov kawg tensile zog (UTS). Thaum cov khoom raug rub nws stretches. Lub zog, uas yog ncab cov khoom, yog hu ua kev ntxhov siab. Lub zog tensile kawg yog qhov siab tshaj plaws ntawm cov khoom siv tuaj yeem tiv taus ua ntej caj dab.
Necking yog qhov xwm txheej ntawm ntu ntu ntawm cov qauv ua me me. Qhov no tuaj yeem piav qhia los ntawm kev siv cov ntawv cog lus sib txuas ntawm cov qauv. Thaum muaj kev ntxhov siab, cov kev sib cuam tshuam ntawm kev sib cuam tshuam ua rau qhov sib txawv, kom cov qauv zoo li qub. Thaum qhov kev ntxhov siab raug tso tawm, tus qauv tag nrho lossis ib nrab rov qab los rau nws lub xeev thawj zaug. Thaum lub caj dab pib lub molecules yog stretched sib nrug kom cov intermolecular rog tsis txaus los tuav lawv ua ke. Qhov no ua rau muaj kev nyuaj siab tam sim ntawd vim muaj kev ntxhov siab thiab caj dab tshwm sim.
Tensile lub zog kuj yog cov khoom ntawm cov khoom. Qhov no yog ntsuas hauv Pascal, tab sis cov chav loj xws li Mega Pascal tau siv rau hauv cov xwm txheej zoo.
Yield Strength yog dab tsi?
Thaum cov khoom siv tau ncab nrog lub zog sab nraud, thawj feem ntawm kev ncab yog elastic. Qhov no yog hu ua elastic deformation. Elastic deformation yog ib txwm thim rov qab. Tom qab ib tug npaum li cas ntawm quab yuam yog siv, lub deformation ua yas. Ib qho yas deformation tsis thim rov qab. Lub ntsiab lus uas cov elastic deformation ua cov yas deformation yog ib qho tseem ceeb ntawm cov khoom.
Yield lub zog yog txhais raws li qhov kev ntxhov siab qhov twg cov khoom yas (irreversible) deformation tshwm sim. Yog tias qhov kev ntxhov siab thov qis dua qhov kev tawm dag zog, qhov deformation yog ib txwm elastic.
Yield zog yog ib txwm qis dua lub zog tensile kawg. Qhov no txhais tau hais tias txhua yam kev cuam tshuam caj dab tshwm sim tom qab yas deformation. Lub caj dab tsis tuaj yeem ua tau hauv cheeb tsam elastic deformation.
Yield zog tuaj yeem ntsuas tau siv txoj hauv kev xws li txoj kev faib khoom.
Tensile Strength vs Yield Strength
