Gaji Strain: Tsarin Haɗa da Diagram

Mai Tsawon Strain Gauge Da Nema

A strain gauge shine da karamin yadda ake yi amfani da shi don sanarwa tsawo wajen abu. Idan an yi gudummawa na gaba na abu, zan iya haɗa hanyoyi a cikin abu. Hanyoyin haka a cikin abu, ya kunshi hanyoyi mai ciwo ko mai karfi, ana kiran ta da sunan tsawo, kuma ana sanarwata ta tun daga strain gauge. Idan abu ya haɗa a cikin iyakokin gaskiya, za a iya zama mai ciwo da mai tsakiyar zuwa ko za a iya zama mai karfi da mai girgizar zuwa. A baya kan hakan, zan iya samun gwadon resistance daga fadin zuwa fadin.

Strain gauge tana da jirgin yadda ake sanar da hanyoyin yawa masu hukumomi a cikin abu. Tun daga sanarwar gwadon resistance na abu, za su iya samun yadda ake yi amfani da stress.

Gwadon resistance tana da ma'ana mafi yawan hukumomi, kuma don haka don sanar da wannan hukumomin yawa, strain gauge tana da karamin alumi mai tsakiyar kadan da ke cikin kwalbar zigzag a kan abu mai ba da shiga daidai da ake kira carrier, kamar yadda aka bayyana a nan, saboda haka za su iya kafa yadda ake sanar da hukumomin yawa a cikin manyan linukan parallel da za su iya sanar da shi da inganci. Gage tana sauka da abu da adabin gummi.

Idan abu yake haɗa hanyoyi, gwadon electrical resistance tana canza, kuma wannan canzan tana sanar da shi tun daga gage.

Circuit Bridge na Strain Gauge

Circuit bridge na strain gauge tana nuna stress da ake sanar da shi da darajar da ya faru, kuma tana amfani da voltmeter a tsakiyar bridge don tabbatar da sanarwar hakan:

A nan, R1 da R3 shine arms na ratio da suka fiye, kuma R2 shine arm na rheostat da take da ma'ana sama da resistance na strain gauge. Idan gage ba ta haɗa, bridge tana ƙunshi, kuma voltmeter tana nuna ballo. Idan an canza resistance na strain gauge, bridge tana ƙunshi, kuma tana nuna alamun da voltmeter. Voltage na fitarwa daga bridge zai iya samun ziyarta da differential amplifier.

Yawan Tsayowan Temperature na Strain Gauge

Wannan shine babban batun da tana iya haɗa resistance na gage. Idan tsayowan temperature ya ƙarin, resistance tana ƙarin, kuma idan tsayowan temperature ya ƙarfin, resistance tana ƙarfin. Wannan shine halitta da duka conductors. Zan iya kula hakan don amfani da strain gauges da suka ƙara temperature-compensated ko da tattalin strain gauge technique.

Duk strain gauges suna da alloy na constantan wanda tana ƙara tsayowan temperature a resistance. Amma wasu strain gauges ba su da isoelastic alloy. A nan, dummy gauge tana amfani a kan R2 a cikin circuit na quarter bridge strain gauge wanda tana taimaka don ƙara tsayowan temperature.

Idan tsayowan temperature ya canza, resistance tana canza da ma'ana sama a duk arms na rheostat, kuma bridge tana ƙunshi. Yawan tsayowan temperature tana ƙara. Tana da kyau a duba voltage ƙarfin don ƙara self-heating na strain gauge. Self-heating na gage tana ƙunshi da kyau saboda hukumarren mekaniki.

Wannan arrangement tana da sunan quarter-bridge. Ana da wasu arrangements kafin half-bridge da full-bridge configurations wanda suka ba da sensitivity mafi yawa da quarter-bridge circuit. Amma quarter-bridge circuit tana da amfani a cikin systems na sanarwa na strain.

Amfani da Strain Gauge

• A cikin ƙungiyar mechanical engineering development.

• Don sanarwa stress da machinery tana yi.

• A cikin ƙungiyar testing na component na aircraft kamar; linkages, structural damage, etc.

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