Ngokusebenzisa impembelelo yoxinzelelo lwabaqhubi besinyithi, i-gage yoxinzelelo encanyathiselwe kwi-PCBA inokulinganiswa ngokutshintsha kwexabiso layo lokuxhathisa xa i-PCBA ikhubaza kwaye iba ngoomatshini.I-quantified strain inokuthelekiswa noxinzelelo lokugqibela ukumisela umngcipheko we-PCBA deformation kumacandelo okanye i-tin point rupture of components.Ukubonelela ngesikhokelo kumanyathelo okuphucula inkqubo yePCBA.
Inkqubo yovavanyo loxinzelelo ibona utshintsho lombane olubangelwa kukutshintsha kwegeyiji yoxinzelelo ngebhulorho yaseWheatstone, emva koko iguqule utshintsho lombane lube luxinzelelo ngenkqubo yesoftware yovavanyo loxinzelelo.
Intyatyambo yohlobo yigeyiji yoxinzelelo equlathe iigridi ezintathu ezizimeleyo ezibuthathaka, ezipakishwe enye kwenye kwindawo enye ukulinganisa ubunzima ecaleni kweezembe zazo kwindawo enye.
Uxinzelelo luchazwa njengo (ubude obutshintshileyo)/(ubude bokuqala), bubuninzi bomzimba obungena dimensionless, kuvavanyo loxinzelelo lwe-PCBA, kuba ixabiso loxinzelelo lincinci kakhulu, lidla ngokuchazwa yi-microstrain (με), ngokwe-106* (utshintsho lobude) /(ubude bokuqala) ukuchaza i-microstrain.
Kuvavanyo loxinzelelo lwe-PCBA, imeko yoxinzelelo lwe-PCBA yimeko yoxinzelelo lwenqwelomoya.Inkqubo yohlalutyo lovavanyo lwe-strain ingabala olona xinzelelo luphambili kunye nezinga loxinzelelo kwinkqubo ye-PCBA ngokulinganisa ixabiso lexesha lokwenyani kwiindlela ezintathu zentyatyambo yoxinzelelo, ukuze ugwebe ukuba imveliso yemveliso yenkqubo idlula umgangatho.
Amanyathelo angaphaya komda woxinzelelo athathwa njengogqithise kwaye achongelwa amanyathelo okulungisa.Imida yoxinzelelo inokufumaneka kumthengi, umthengisi wecandelo, okanye izenzo ezaziwayo-kakuhle ngaphakathi kweshishini/ishishini (eliphuma kwi-IPC_JEDEC-9704A).
Apho i-principal strain ilolona xinzelelo lukhulu kunye nolona luncinci lwe-orthogonal kwinqwelomoya, i-perpendicular enye kwenye kwaye i-tangent strain kwicala ngu-zero.Kuvavanyo loxinzelelo lwe-PCBA, uxinzelelo oluyintloko ludla ngokubalwa ngokulinganisa njengekhrayitheriya ebalulekileyo yemetric.Izinga loxinzelelo libonisa izinga lokutshintsha koxinzelelo ngexesha leyunithi, elisetyenziselwa ukulinganisa umngcipheko womonakalo wamacandelo.
Gxininisa i-gage
IPC_JEDEC-9704A
Inkqubo yohlalutyo loxinzelelo
Ixesha lokuposa: Apr-22-2024