摘要
基于经典的缓冲材料缓冲特性理论,开发了一套跌落冲击试验机系统,并研究了自由跌落冲击过程中的数据采集与处理中的关键问题。通过采用多种数字滤波技术,有效地削弱了随机信号的干扰;利用一种新的获取初速的数据处理方法,使得数据更趋于实际值;通过获取的实验数据,利用最小二乘法进行包装材料缓冲特性的拟合,获得了缓冲材料的缓冲特性曲线。在相同条件下,针对EPE材料进行了多次跌落冲击试验,实验结果符合经典的缓冲包装材料缓冲特性曲线,实验最大相对误差为3.7272%。实验表明,试验系统数据采集规范、数据处理方法准确,并验证了试验系统的可靠性,为缓冲包装设计提供了有利的科学依据。
A set of drop impact testing machine was developed based on classical cushioning properties theory of cushion material. Key issues of data acquisition and processing of free fall were studied. The interference of random signal was effectively reduced by a variety of digital fihering technology; by using a new data processing method to obtain the initial velocity, the data approaches to the actual value; the buffer curve of cushioning materials was then obtained through the least square fitting of the experimental data. Repeated drop impact experiments of EPE materials were carried out. The results satisfy the classical cushion curve, and the maximum relative error is 3. 7272% of the experimental result. It was concluded that the data acquisition of the experimental system is standard, the data processing method is accurate, and the experimental system is reliable. The purpose was to provide scientific basis for cushion packaging design.
出处
《包装工程》
CAS
CSCD
北大核心
2013年第23期54-59,共6页
Packaging Engineering
基金
国家十二五科技支撑项目(2011BAD24B01)
宁波市自然科学基金(2011A610154)
