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Ma Gauges a Strain
Strain Gauge ndi zida zomwe zimagwiritsidwa ntchito poyeza kuchuluka kwa chinthu. Wopangidwa ndi Edward E. Simmons ndi Arthur C. Ruge mu 1938, mtundu wodziwika kwambiri wa strain gauge imakhala ndi insulating flexible support yomwe imathandizira patani yazitsulo zazitsulo. The strain gauge imamangiriridwa ku chinthucho ndi zomatira zoyenera, monga cyanoacrylate. Pamene chinthucho chikupunduka, zojambulazo zimakhala zopunduka, zomwe zimapangitsa kuti magetsi ake asinthe. Kusintha kumeneku, komwe nthawi zambiri kumayesedwa pogwiritsa ntchito mlatho wa Wheatstone, kumayenderana ndi kupsinjika ndi kuchuluka komwe kumadziwika kuti geji factor.
A strain gauge imatenga advantage ya conduction yamagetsi komanso kudalira kwake osati kungoyendetsa magetsi kwa kondakitala, yomwe ndi katundu wake, komanso geometry ya conductor. Pamene woyendetsa magetsi atambasulidwa mkati mwa malire a kusungunuka kwake kotero kuti sisaphwanyidwe kapena kusinthika kosatha, zimakhala zochepetsetsa komanso zotalika, kusintha komwe kumawonjezera kukana kwake kwa magetsi kumapeto kwa mapeto. Mosiyana ndi zimenezi, pamene kondakitala akakamizidwa kuti asamangidwe, amakula ndikufupikitsa, kusintha komwe kumachepetsa mphamvu yake yamagetsi kumapeto mpaka kumapeto. Kuchokera pakuyezedwa kwamphamvu kwamagetsi kwa strain gauge, kuchuluka kwa kupsinjika komwe kumagwiritsidwa ntchito kumatha kuganiziridwa. Geji yodziwika bwino imakonza mzere wautali, wopyapyala wa mizere yolumikizana mozungulira kotero kuti kupsinjika pang'ono poyang'ana komwe kumayendera mizere yofananira kumapangitsa kuti pakhale kuchulukitsitsa kochulukira pautali woyenerera wa kondakitala. -ndipo chifukwa chake kusintha kochulukirachulukira pakukana-kuposa kuwonedwa ndi mzere umodzi wowongoka waya conductive. Ma geji a strain amayezera zopindika zakomweko ndipo amatha kupangidwa ang'onoang'ono kuti athe kulola "malire" monga kuwunika kupsinjika komwe chithunzicho chikukhudzidwa. Izi zitha kukhala mogwira zogwiritsidwa ntchito pakutopa maphunziro azinthu.
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