三種橡膠拉力機需要大變形引伸計的試驗
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橡膠(jiao)拉力機配不配置(zhi)大變形引伸計兩者之間的存在(zai)著細微的差(cha)別,具(ju)體體現在(zai)試驗(yan)的操(cao)作上,今天(tian)我(wo)們就來介紹(shao)一下三種常(chang)見的試驗(yan)方法。
A:定(ding)變形:試(shi)(shi)(shi)驗(yan)(yan):定(ding)變形設定(ding)數據(ju)(例如100.00mm),將(jiang)定(ding)應力(li)(li)設定(ding)為(wei)0,試(shi)(shi)(shi)驗(yan)(yan)時進入(ru)定(ding)變形試(shi)(shi)(shi)驗(yan)(yan)狀態,按清(qing)零鍵,使試(shi)(shi)(shi)驗(yan)(yan)力(li)(li)和峰值(zhi)(zhi)清(qing)零,將(jiang)試(shi)(shi)(shi)樣安裝(zhuang)在(zai)上下夾具(ju)之間,然后(hou)將(jiang)大(da)變形引伸計的(de)兩個(ge)夾持鉗口夾在(zai)試(shi)(shi)(shi)樣上,按試(shi)(shi)(shi)驗(yan)(yan),試(shi)(shi)(shi)驗(yan)(yan)開始后(hou),位移自動清(qing)零,當達(da)到設定(ding)的(de)變形量(liang)(liang)后(hou)(100.00mm),試(shi)(shi)(shi)驗(yan)(yan)自動停(ting)止結束。同時記錄達(da)到變形量(liang)(liang)的(de)試(shi)(shi)(shi)驗(yan)(yan)力(li)(li)值(zhi)(zhi)。
B:定(ding)(ding)(ding)應力(li):試(shi)(shi)(shi)驗:定(ding)(ding)(ding)應力(li)設(she)定(ding)(ding)(ding)數據(例(li)如1000.0N),將定(ding)(ding)(ding)變(bian)形(xing)設(she)定(ding)(ding)(ding)為0,試(shi)(shi)(shi)驗時(shi)進(jin)入定(ding)(ding)(ding)應力(li)試(shi)(shi)(shi)驗狀態,按清零(ling)鍵,使試(shi)(shi)(shi)驗力(li)和峰值清零(ling),將試(shi)(shi)(shi)樣安(an)裝在上下夾(jia)(jia)具之間,然(ran)后(hou)將大變(bian)形(xing)引伸(shen)計的兩個夾(jia)(jia)持鉗口夾(jia)(jia)在試(shi)(shi)(shi)樣上,按試(shi)(shi)(shi)驗,試(shi)(shi)(shi)驗開始后(hou),位移(yi)自動清零(ling),當達(da)到(dao)設(she)定(ding)(ding)(ding)的試(shi)(shi)(shi)驗力(li)值后(hou)(1000.0N),試(shi)(shi)(shi)驗自動停止(zhi)結束。同時(shi)記錄達(da)到(dao)試(shi)(shi)(shi)驗力(li)時(shi)的變(bian)形(xing)量值。
C:拉斷(duan):試(shi)驗(yan):將定變形和(he)定應力都設定為0,按清零(ling)鍵,使(shi)試(shi)驗(yan)力和(he)峰值清零(ling),將試(shi)樣安裝在上(shang)下(xia)夾(jia)具(ju)之間,然后(hou)將大(da)變形引伸(shen)計的兩個夾(jia)持鉗口夾(jia)在試(shi)樣上(shang),按試(shi)驗(yan),試(shi)驗(yan)開始后(hou),位移(yi)自動清零(ling),試(shi)樣拉斷(duan)后(hou)試(shi)驗(yan)自動停止結(jie)束。同時(shi)計算強度(du)(du)=峰值/(寬(kuan)度(du)(du)*厚度(du)(du))。伸(shen)長(chang)率=斷(duan)裂(lie)時(shi)的位移(yi)/標距*100%。
A:定(ding)變形:試(shi)(shi)(shi)驗(yan)(yan):定(ding)變形設定(ding)數據(ju)(例如100.00mm),將(jiang)定(ding)應力(li)(li)設定(ding)為(wei)0,試(shi)(shi)(shi)驗(yan)(yan)時進入(ru)定(ding)變形試(shi)(shi)(shi)驗(yan)(yan)狀態,按清(qing)零鍵,使試(shi)(shi)(shi)驗(yan)(yan)力(li)(li)和峰值(zhi)(zhi)清(qing)零,將(jiang)試(shi)(shi)(shi)樣安裝(zhuang)在(zai)上下夾具(ju)之間,然后(hou)將(jiang)大(da)變形引伸計的(de)兩個(ge)夾持鉗口夾在(zai)試(shi)(shi)(shi)樣上,按試(shi)(shi)(shi)驗(yan)(yan),試(shi)(shi)(shi)驗(yan)(yan)開始后(hou),位移自動清(qing)零,當達(da)到設定(ding)的(de)變形量(liang)(liang)后(hou)(100.00mm),試(shi)(shi)(shi)驗(yan)(yan)自動停(ting)止結束。同時記錄達(da)到變形量(liang)(liang)的(de)試(shi)(shi)(shi)驗(yan)(yan)力(li)(li)值(zhi)(zhi)。
B:定(ding)(ding)(ding)應力(li):試(shi)(shi)(shi)驗:定(ding)(ding)(ding)應力(li)設(she)定(ding)(ding)(ding)數據(例(li)如1000.0N),將定(ding)(ding)(ding)變(bian)形(xing)設(she)定(ding)(ding)(ding)為0,試(shi)(shi)(shi)驗時(shi)進(jin)入定(ding)(ding)(ding)應力(li)試(shi)(shi)(shi)驗狀態,按清零(ling)鍵,使試(shi)(shi)(shi)驗力(li)和峰值清零(ling),將試(shi)(shi)(shi)樣安(an)裝在上下夾(jia)(jia)具之間,然(ran)后(hou)將大變(bian)形(xing)引伸(shen)計的兩個夾(jia)(jia)持鉗口夾(jia)(jia)在試(shi)(shi)(shi)樣上,按試(shi)(shi)(shi)驗,試(shi)(shi)(shi)驗開始后(hou),位移(yi)自動清零(ling),當達(da)到(dao)設(she)定(ding)(ding)(ding)的試(shi)(shi)(shi)驗力(li)值后(hou)(1000.0N),試(shi)(shi)(shi)驗自動停止(zhi)結束。同時(shi)記錄達(da)到(dao)試(shi)(shi)(shi)驗力(li)時(shi)的變(bian)形(xing)量值。
C:拉斷(duan):試(shi)驗(yan):將定變形和(he)定應力都設定為0,按清零(ling)鍵,使(shi)試(shi)驗(yan)力和(he)峰值清零(ling),將試(shi)樣安裝在上(shang)下(xia)夾(jia)具(ju)之間,然后(hou)將大(da)變形引伸(shen)計的兩個夾(jia)持鉗口夾(jia)在試(shi)樣上(shang),按試(shi)驗(yan),試(shi)驗(yan)開始后(hou),位移(yi)自動清零(ling),試(shi)樣拉斷(duan)后(hou)試(shi)驗(yan)自動停止結(jie)束。同時(shi)計算強度(du)(du)=峰值/(寬(kuan)度(du)(du)*厚度(du)(du))。伸(shen)長(chang)率=斷(duan)裂(lie)時(shi)的位移(yi)/標距*100%。