|本期目录/Table of Contents|

 High Precision Piezoelectric Fatigue Testing Machine for Biofilm Materials(PDF)

《纳米技术与精密工程》[ISSN:1672-6030/CN:12-1351/O3]

期数:
2013年2期
页码:
134-139
栏目:
精密测量
出版日期:
2013-03-15

文章信息/Info

Title:
 适用于生物薄膜材料的压电驱动高精度疲劳试验机构
作者:
 Jie Meng12 Xie Haifeng1 Liu Yan13 Li Xiujuan4 Yang Zhigang1
Author(s):
 接勐12 谢海峰1 刘焱13 李秀娟4 杨志刚1
压电;压电振子;疲劳试验机构;生物薄膜材料;蜻蜓翅翼
关键词:
  piezoelectric piezoelectric vibrator fatigue testing machine biofilm materials dragonfly wings
Keywords:
-
分类号:
-
DOI:
-
文献标识码:
A
摘要:
To study the fatigue mechanism and property of biofilm materials, this paper designed a
novel fatigue testing machine driven by piezoelectric vibrator. First, the working principle of the fatigue
testing machine for biofilm materials was introduced. Then the dynamic model of the machine was es-
tablished to obtain its system dynamic characteristics. Finally, a prototype was manufactured. The fa-
tigue test of dragonfly wings was carried out by the prototype with the alternating cycle load (cycle
characteristic R=0.1). The mechanism of initialization and propagation of cleft caused by fatigue failure
was obtained. The prototype can meet the requirement of small load, high precision loading, steady
resonance and high ability of anti-interference during the fatigue test.
Abstract:
 为研究生物薄膜材料的疲劳行为及其机制,对其进行疲劳测试,利用压电振子作为疲劳试验机构的驱动力
源,并基于系统共振方法设计了适用于昆虫薄膜材料的疲劳试验机构. 首先,介绍压电驱动式疲劳试验机构的工作
原理,然后建立动力学模型,获得机械系统的动态特性,并制作了样机. 最后利用样机在蜻蜓翅翼上施加给定循环特
性R=0.1的交变应力,通过对试验结果的观察,分析了蜻蜓翅翼由于疲劳破坏所引起的一系列裂纹产生、扩展的机理.
制成的样机满足对生物薄膜材料进行疲劳试验所需的载荷小、加载精度高、共振稳定可靠和抗干扰能力强等要求.

参考文献/References

备注/Memo

备注/Memo:
更新日期/Last Update: 2013-03-25