一种动光弹模型材料的制作方法及其应用

基于#618环氧树脂、甲基六氢苯酐、促进剂DMP-30、环氧树脂消泡剂四种原料,提出制作光弹性模型的新配方和新方法,并利用单轴压缩实验、电测法和动态光弹法分别测定了制作的光弹模型的动态力学参数。新方法工艺简单,制作周期短,对人体无害。制作的光弹模型初始应力小,表面光洁,质地均匀,透光性好,光学灵敏度高,具有良好的机械加工和切削性能。通过三点弯曲梁冲击实验,得到了清晰的光弹等差条纹图像,验证了该配方和方法制作的模型可以应用于动态光弹性实验。

A Method of Dynamic Photoelastic Experimental Model Material and its Application

Using four raw materials including # 618 epoxy resin,methyl hexahydrophthalic anhydride,accelerator DMP-30 and epoxy resin defoamers,new formulation and new preparation method for manufactering photoelastic model are proposed in this paper,the dynamic mechanical parameters of newly prepared model were measured based on uniaxial compression experiment,electrical measuring method and dynamic photoelastic method,respectively.The new method is not only simple in processing and harmless to human body but also has short production cycle.New photoelastic model has small initial stress,smooth surface,uniform texture,good transparency,high optical sensitivity,and good mechanical and cutting performance.Through three-point bending beam impact experiment,a clear image of photoelastic isochromatic fringe was obtained.In dynamic photoelastic experiment,the application feasibility of this model prepared by using new formulation and new preparation method is verified.