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電子拉力機的兩種測試方法區(qū)別之處
閱讀：947 發(fā)布時間：2014-7-21電子拉力機的檢定方法，主要分為兩種：
Electronic tensile machine verification method, mainly divided into two kinds:
*種：根據(jù)電子拉力機被檢區(qū)間的力值，選擇標準拉力試樣，標準拉力試樣的力值為該區(qū)間滿量程力值的60％～90％之間選擇，將拉力機試樣裝夾在電子拉力 試驗機上，按GB/T228-2002標準規(guī)定的速度讓電子拉力試驗機對標準拉力試樣進行拉伸，當指針稍有擺動時立刻停止拉伸，即標準拉力試樣處于拉伸狀 態(tài)，此時在標準拉力試樣上裝上引伸計或貼上應變片，按GB/T228-2002標準規(guī)定的速度繼續(xù)對標準拉力試樣進行拉伸，引伸計或應變片將標準拉力試樣 的伸長量顯示出來，根據(jù)胡克定律，將伸長量換算為拉力值，再與度盤上與標準拉力試樣相同的力值點進行對比，根據(jù)比對值的差來確定電子拉力試驗機技術(shù)狀態(tài)及 精度，使得電子產(chǎn)品在設計研制階段對其固有可靠性有進一步的提高。
First: according to the strength of test interval to electronic tensile machine, choose standard tensile test specimen, the tension test specimen strength standard values for the area between the full scale value choice between 60% ~ 90%, the tensile machine clamping in electronic tensile test sample machine, according to GB/T228-2002 standard for electronic tensile testing machine to stretch of standard tensile samples, when the pointer swing slightly stop stretching, namely standard tensile specimens under tensile state, at this point in the standard tensile samples on or affix strain gauge extensometer, according to GB/T228-2002 standard continue to stretch to standard tensile specimen, or strain gauge extensometer will display standard elongation of tensile sample,Equivalent according to hooke's law, the elongation of tension values, and again on the dial and standard tensile samples of the same value point, according to comparing the value of the difference to determine the state and precision of electronic tensile testing machine technology makes electronic products in the design development stage for its inherent reliability have further improved.
第二種：根據(jù)電子拉力試驗機被檢區(qū)間的力值，將相應力值的標準拉力試樣裝夾在試驗機上，按GB/T228-2002標準規(guī)定的速度讓試驗機對標準拉力試樣 進行拉伸，當標準拉力試樣處于拉伸狀態(tài)時在其上裝上引伸計或貼上應變片，讓拉力試驗機繼續(xù)對標準拉力試樣進行拉伸，引伸計或應變片將標準拉力試樣的伸長量 顯示出來，將伸長量換算為拉力值，再與拉力試驗機度盤上與標準拉力試樣相同的力值點進行對比，根據(jù)比對值的差來確定電子拉力試驗機技術(shù)狀態(tài)及精度。
Second: according to the electronic tensile testing machine were inspection interval value, the force and stress value of standard tensile test specimen clamping on the test machine, according to GB/T228-2002 standard for testing machine for standard tensile specimen tensile, when standard tensile samples are in a state of tension on the jacket or affix strain gauge extensometer, let continue to stretch to standard tensile specimen tensile testing machine, or strain gauge extensometer can display the standard tensile specimen elongation elongation conversion into tension values, and again on the tensile testing machine dial with standard tensile samples of the same value point, according to comparing the value of the difference to determine the state of electronic tensile testing machine technology and precision.
這個方法是利用胡克定律，根據(jù)標準拉力試樣的伸長量換算為力值與試驗機度盤力值進行對比，來確定電子拉力機的精度。這種方法極大程度上簡化了檢定的操作過程，對電子拉力機原始拉伸狀態(tài)的日常檢定帶來極大方便和標準化。
This method is the use of hooke's law, according to the standard tensile specimen elongation conversion do value compared with testing machine dial force value, to determine the accuracy of electronic tensile testing machine. This method greatly simplifies the verification process, the original tensile state electronic tensile testing machine daily check and bring great convenience and standardization.
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