【摘要】 主要介绍了一种可实现多载荷复合加载及原位观测的新型力学试验设备,通过复合加载,设备可对材料的服役情况进行在线试验。通过与传统商业力学试验设备所得试验数据进行比对分析,发现新设备所得试验结果稳定,且与传统商业设备测量结果吻合度较高,可被应用于各类力学性能测试。应用复合加载设备对IF钢进行了拉伸-扭转复合加载试验,试验结果显示,在承受多种外加载荷共同作用的情况下,IF钢的力学性能较单项加载时会发生变化,其抗拉强度较单项拉伸时有所下降,且扭转速率越大则抗拉强度的下降越明显。更多还原

【Abstract】 A new type of mechanical test equipment was described,which can realize the combined loading,so that the online detection for the material can be realized. Compared with the results obtained by the traditional commercial mechanical test equipment,the tested results obtained by the new equipment were stable and highly identical with the results of the traditional equipment. Thus,the new equipment can be used to test various mechanical properties. The tensile-torsion combined loading tests of IF steel were carried out by using the combined loading equipment,and the results showed that on the condition of the combined loading,the properties of IF steel were different from that on the condition of the single loading. And the tensile strength was lower than that of single tensile,and the greater the torsional rate,the more obvious the decrease of the tensile strength.更多还原