Laboratory tensile testing machines ua lub luag haujlwm tseem ceeb hauv cov txheej txheem kev lees paub zoo thoob plaws ntau qhov kev lag luam. Los ntawm cov roj hmab thiab cov yas mus rau metallurgical hlau thiab steels, kev tsim tshuab, khoom siv hluav taws xob, thiab kev tsim tsheb, cov tshuab ntsuas tensile yog cov cuab yeej tseem ceeb uas pab txhawb kev soj ntsuam cov khoom lag luam, kev tshawb fawb thiab kev tsim kho, thiab kev xaiv cov khoom siv.
Cov tshuab no ua haujlwm los ntawm kev siv lub zog tswj, maj mam nro ntawm cov khoom siv mus txog thaum nws tawg, ua rau cov kws ua haujlwm thiab cov kws tshawb fawb los ntsuas nws cov khoom siv tshuab. Qee qhov tseem ceeb ntawm cov khoom siv kho tshuab uas tuaj yeem ntsuas tau siv cov tshuab ntsuas tensile suav nrog lub zog tensile kawg, lub zog tawm los, elongation, thiab modulus ntawm elasticity.
Kev lag luam tsheb, piv txwv li, tso siab rau cov tshuab no los xyuas kom meej tias nws cov tsheb ua tau raws li cov qauv kev nyab xeeb siab tshaj plaws. Lub tshuab ntsuas tensile yog siv los ntsuas lub zog thiab ua haujlwm ntawm ntau yam thiab cov khoom siv, suav nrog hlau, yas, thiab roj hmab, uas yog siv rau hauv cov txheej txheem tsim khoom.
Cov thev naus laus zis no tseem siv dav hauv kev tsim khoom siv hluav taws xob los ntsuas lub zog thiab elasticity ntawm cov ntaub ntawv xws li xov hlau, cables, thiab cov khoom sib txuas, kom ntseeg tau tias lawv tuaj yeem tiv taus kev ntxhov siab cuam tshuam nrog lawv cov kev siv tshwj xeeb.
Zuag qhia tag nrho, lub tshuab kuaj tensile kuaj tau dhau los ua qhov tseem ceeb hauv kev ua kom cov khoom zoo thiab kev ua tau zoo hauv ntau qhov kev lag luam. Lawv tso cai rau cov kws tshawb fawb thiab engineers kom nkag siab zoo txog cov khoom siv sib txawv ntawm cov khoom sib txawv, ua kom muaj kev txhim kho cov khoom zoo thiab kev nyab xeeb. Raws li kev siv thev naus laus zis, nws cia siab tias cov tshuab no yuav txuas ntxiv mus ua lub luag haujlwm tseem ceeb hauv ntiaj teb ntawm cov khoom siv science thiab engineering.
