查询词典 photoelasticity

This project is intended to modify circular disk loaded in diametral compression method, from concentric load to distributed load on a small area to reduce error. Firstly, we will establish digital Photoelasticity system, manufacture specimen, design loading frame, and then the experiment will completed.

本计画主要目的在减少误差而修正圆盘试片受上下压力实验法的数学理论依据，负载从集中力改为有限范围的均布力，经过理论推导后，以自行组合之数位光弹仪实验比较两者求出的材料条纹系数值。

The main purpose of this paper is to improvement of isochromatics wrapped phase map can make the phase to unwrap successfully and get the physical quantity we want to know. There is a peculiar problem of isochromatic interaction in Phase-shifting techniques of photoelasticity.

中文摘要本论文主要的目的是利用负载相移法来求得相位图，并且使用相位展开的技术使相位图展开完成，得到我们所要求得的物理量-相对延迟量。

The experimental study on the cumulative effectiveness of different slit charge based on dynamic photoelasticity method was made,and the isochromatic fringes graphs in the process of blasting of the slit charge were obtained.

为了解切缝宽度对切缝药包爆炸聚能效应的影响，用动态光弹性法对不同切缝宽度的切缝药包的爆炸过程进行了试验，获得了切缝药包爆炸过程中的序列等差条纹图。

In automatic acquisition and procession of the photoelastic data, there are some troubles about how to acquire single isoclinics and to improve the precision of evaluating isochromatic fringe orders in the thin slice of the three-dimension model when the actual problems are solved by photoelasticity.

中文题名彩色域数字光弹性中数据采集技术的应用研究副题名外文题名 Data acquisition techniques in color-field digital photoelasticity 论文作者雷振坤导师云大真学科专业固体力学研究领域\研究方向学位级别博士学位授予单位大连理工大学学位授予日期2002 论文页码总数168页关键词光弹性法图像处理数据采集彩色图像处理数字光弹性馆藏号BSLW /2003 /O348 /5 用光弹性实验处理实际问题时，在数据自动采集与处理中，如何获得单纯等倾线的问题仍是一大难点，此外就是如何进一步提高三维冻结模型薄切片的等色线定级精度问题也比较困难。

On the basis of color imaging system, an automated photoelasticity in white light for determining isochromatics and isoclinics is presented It includes two techniques One is automation of the ordering of color isochromatics based on BP neural network The other is whole field digital determining of isoclinic angles by five step color phase shifting Many limitations and drawbacks, which affect the precision of measurement, were more eliminated and improved The validity of experimental results was ...

以彩色信息图象处理技术为基础，围绕光弹性实验数据自动采集这个主题，提出用BP神经网络自动确定等色线分数级条纹及其级数的颜色插值法，以及全场数字化确定等倾角的五步彩色相移法。典型实验表明，上述方法在提高光弹性数据采集自动化程度和减少各种误差因素影响等方面均有所改善；进而提高三维光弹性薄切片应力分析结果的精度，促进实验应力分析的工程应用，扩大光弹性法的应用范围。

This moire effect is used in combination with photoelasticity to separate the principle stresses in the two-dimensional stress problem. The model was made by epoxy resin, its surface was covered with a printing film, which have 300 lines per inch.

以每时300道条纹的网格薄膜贴在环氧树脂模型上，采用光测法冻结技术把应力冻结下来，然后在偏振场中测取等差线，与标准网板重叠测取水平位移及垂直位移条纹图。

In this paper, the fundamental principle of dynamic photoelasticity is introduced.

介绍了动光弹的基本原理，并从理论上回答了动光弹应用中的一些问题，如惯性力可否忽略等。

Three-dimensional digital photoelasticity can be used widely in engineering field and the field of application is widened.

这说明三维数字光弹法可以应用到工程测试中，为扩展数字光弹性法发展的空间奠定了基础。

The new photoplasticity analysis theory was put forward by the research of the change from photoelasticity to photoplasticity.

在冻结应力的情况下，光塑性条纹与试件的应力成比例，是应力条纹。

Based on the work which was reported before, some urgent problems of digital photoelasticity have been discussed,and automatic data processing and stress separation of photoelasticity are realized.

随着计算机技术的发展，光弹性法测量三维应力模型的自动化技术成为新的研究热点。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。