基于连续视频的HDPE发泡材料蠕变性能试验方法研究

摘要

提出了一种适用于复杂工况下基于连续视频的非接触式应变检测方法,对高密度聚乙烯结构发泡材料进行蠕变特性试验研究.通过记录试样上标记的像素变化来确定试样的伸长量,从而得到试样的蠕变变形量,最终得到高密度聚乙烯材料在自然条件下的蠕变规律.该方法能够记录试样的连续变化情况.%This paper presented a non-contact strain measurement method based on the continuous video which used to study creep characteristics of high density polyethylene structure foam material sample in complex conditions, through the sample marked pixel changes to determine sample elongation, thus to get the specimen's creep deformation. Finally get the creep law of a high density polyethylene material under natural conditions. This method is able to record continuous changes of the length of the sample.