微电子产品冲击试验机

微电子产品在一般使用和各种运输过程中都可能因为不同形式的冲击而造成功能失效,因此电子产品的抗冲击强度成为电子产品可靠性的一个评价指标,也是结构设计的一个重要考虑因素。但是目前常用的冲击试验机都是针对结构尺寸较大,质量较重的产品,对于微电子产品这种结构小、重量轻的特点,一般的试验机不能有效的检测出其冲击的力学特性。文章介绍了所设计的冲击试验机的原理结构及其功能,并使用移动电话在该机上进行一系列冲击试验,获得了载荷、加速度、应变等重复性良好动态力学参数,反映移动电话的抗冲击能力。掌握这些动态力学参数,对产品可靠性的设计有很大的帮助。

Drop Impact Test Device of Portable Electronic Product

Portable electronic devices are well known to be susceptible to drop impact which can cause various damage modes such as interconnect breakage,battery separation in cellular phones,possible cracking along interfaces.Drop impact performance of these products is one of important concerns of product design.Because of the small size of this type of electronic products,it is very expensive,time-consuming and difficult to conduct drop tests to directly detect the failure mechanisms and identify their drop behaviors.A unique drop tester is designed and built in order to conduct fundamental study of impact behaviors of portable electronic devices,which can provide repeatable drop test data.The impact force,acceleration and strain inside specimen during drop can be recorded.A series of examples of transient drop analysis for mobile phone are reported.The test device is introduced and the drop tests are illustrated.