定点高速闪光摄影技术在土工离心机中的应用  

Fixed-spot High-speed Flash Photography Technique Applied to Geotechnical Centrifuge

作　　者：王新伦[1] 赵文凯[1] 林明[1] 程永辉[2] 

机构地区：[1]中国工程物理研究院结构力学研究所,四川绵阳621900 [2]长江科学院水利部岩土力学与工程重点实验室,武汉430010

出　　处：《长江科学院院报》2012年第3期87-90,共4页Journal of Changjiang River Scientific Research Institute

摘　　要：在土工离心模型试验中,摄影是一种重要的测试手段,其具有非接触、直观、测试对象为整个压缩面而非点等优点,但如何拍摄高速旋转的土工离心模型完整、清晰图像一直是一个技术难点,通过定点高速闪光摄影技术较好地解决了这一问题。介绍了定点高速闪光摄影的原理,闪光时间、闪光能量的确定,定点高速闪光摄影同步控制以及实际应用的结果。Photography is an important approach in geotechnical centrifuge model tests.It is intuitive,noncontact,and takes compression plane instead of points as the test object.It＇s a technical difficulty to get clear and complete photos of geotechnical centrifuge model while it＇s rotating with high speed.The authors introduced the principle of applying fixed-spot high-speed flash photography in geotechnical centrifuge.The determination of flash duration and power,the time-series synchronous control as well as the result of applying this photography system to geotechnical centrifuge were also presented.

关 键 词：闪光摄影 闪光时间 闪光能量 同步控制 

分 类 号：TU415[建筑科学—岩土工程]