独立加码结构的静重式力标准机在检测过程中经常会出现交换砝码的现象。传统结构无法解决因砝码交换而导致的逆行程问题,即在进程试验中包含了回程,或在回程试验中包含了进程的问题。通过对砝码的支承机构、加载机构等进行结构上的创新...独立加码结构的静重式力标准机在检测过程中经常会出现交换砝码的现象。传统结构无法解决因砝码交换而导致的逆行程问题,即在进程试验中包含了回程,或在回程试验中包含了进程的问题。通过对砝码的支承机构、加载机构等进行结构上的创新性改进提出解决方案,基本解决了在砝码加卸载过程中的逆行程问题。通过力值传递标准,对力标准机在交换砝码时力值波动度进行了试验检测,当力值从20 k N加载到30 k N的力值时,力值加载曲线为完美的阶梯状加载曲线,在砝码加载过程中力值波动度不超过1%。展开更多
Aluminum laminate is one kind of the rigidizable composite materials and plays an important role in construction of the inflatable space structure(ISS),which has potential application in space in the future.But the st...Aluminum laminate is one kind of the rigidizable composite materials and plays an important role in construction of the inflatable space structure(ISS),which has potential application in space in the future.But the study of the predecessors mainly focuses on the research of the mechanical behavior in the room temperature,for this reason,mechanical properties of the aluminum laminate in low-high temperature have been studied in this paper.The failure mechanism of the aluminum laminate is also analyzed in the microscopic view by JCXA-T33 electron probe.The results show uhat the temperature has significant influence on the strength and Young's modulus of the aluminum laminate.With the increase of temperature,both the strength and Young's modulus of the aluminum laminate decrease.A model between Young's modulus of the aluminum laminate and temperatures is obtained by using Arrhenius equation.The predicted values by the model agree well with the experiment values.展开更多
文摘独立加码结构的静重式力标准机在检测过程中经常会出现交换砝码的现象。传统结构无法解决因砝码交换而导致的逆行程问题,即在进程试验中包含了回程,或在回程试验中包含了进程的问题。通过对砝码的支承机构、加载机构等进行结构上的创新性改进提出解决方案,基本解决了在砝码加卸载过程中的逆行程问题。通过力值传递标准,对力标准机在交换砝码时力值波动度进行了试验检测,当力值从20 k N加载到30 k N的力值时,力值加载曲线为完美的阶梯状加载曲线,在砝码加载过程中力值波动度不超过1%。
文摘Aluminum laminate is one kind of the rigidizable composite materials and plays an important role in construction of the inflatable space structure(ISS),which has potential application in space in the future.But the study of the predecessors mainly focuses on the research of the mechanical behavior in the room temperature,for this reason,mechanical properties of the aluminum laminate in low-high temperature have been studied in this paper.The failure mechanism of the aluminum laminate is also analyzed in the microscopic view by JCXA-T33 electron probe.The results show uhat the temperature has significant influence on the strength and Young's modulus of the aluminum laminate.With the increase of temperature,both the strength and Young's modulus of the aluminum laminate decrease.A model between Young's modulus of the aluminum laminate and temperatures is obtained by using Arrhenius equation.The predicted values by the model agree well with the experiment values.