【摘 要】
：
本文提出了一种用部分相干光可同时获得面内位移和离面位移场的云纹干涉法。该法具有装置简单,无需防震,可用于观场测量等特点。文中论述了此法的基本原理,应用波前干涉理论
【机 构】
：
清华大学工程力学系,清华大学工程力学系,清华大学工程力学系,清华大学工程力学系 北京 100084,北京 100084,北京 100084,北京 100084
论文部分内容阅读
本文提出了一种用部分相干光可同时获得面内位移和离面位移场的云纹干涉法。该法具有装置简单,无需防震,可用于观场测量等特点。文中论述了此法的基本原理,应用波前干涉理论和付里叶光学理论对变形前后波前的干涉、记录和再观进行了分析,导出了计算公式。实现了透射物体和反射物体表面的面内位移分量(U_0,V_(45),U_(90))和离面位移(w)的全场同时测量,典型实验证明,实验值与计算结果符合较好。
In this paper, we propose a moire interferometry method that can obtain in-plane and out-plane displacement fields simultaneously with partially coherent light. The method has a simple device, without shock, can be used for observation and other characteristics of the market. In this paper, the basic principle of this method is discussed. The wave front and back wave interference, recording and rewiring are analyzed by using the wavefront interference theory and the Fourier theory. The formulas are derived. The in-plane simultaneous measurements of the in-plane displacement components (U_0, V_ (45), U_ (90)) and the out-of-plane displacement (w) of transmitted and reflected objects are achieved. The typical experiments show that the experimental values and the calculated results are in good agreement it is good.
其他文献
We provide a novel hollow-core holey fibre that owns a random distribution of air holes in the cladding. Our experiments demonstrate that many of the features p
少儿图书馆如何在竞争中保持活力,创立自己的服务品牌,这是摆在少儿工作者面前的一个重要问题。本文围绕图书馆品牌的定义、种类、作用和创建因素进行了分析,阐述了北京明德
In terms of a single-π orbital model, an analytical expression of the lowest-lying conduction-band and the highestlying valence-band is derived for single wall
Light frequency shift measured in a smalloptically pumped caesium beam frequency standard is reported and analysed. Two light sources, the diffused laser light
We investigate the transient behaviour of a weak probe in asymmetric double quantum well structures, where two excited states are coupled by resonant tunnelling
任何艺术现象的发生都是离不开传播,艺术的传播过程也就是艺术作品产生价值的过程。与新闻等其他传播不同,艺术传播是一种特殊的传播活动,它不是单纯地传播和共享信息,而是重
We study strain distribution inside and outside an arbitrarily-shaped quantum dot (QD) buried in an infinite isotropic medium.
Using a nonadiabatic evolution method, we investigate the spin filter effect in organic polymers in the presence of a local magnetic field. Through a spin-depen
The cross section of the direct neutron capture reaction 12C(n,γ)13C(1/2+) is calculated with the asymptotic normalization coefficient method. The result is in
“科技要发展,计量须先行。”(聂荣臻语)随着80年代初第一台能探测到原子尺度的扫描隧道显微镜问世,人类认识世界的能力产生了新的飞跃。近年来各国竞相开展纳米(10~(-9)米)