Fringe pattern

Lecture General Physics 2 - Chapter 24: Wave Optics. After studying this section will help you understand: wave optics, interference, conditions for interference, producing coherent sources, Young’s double slit experiment, resulting interference pattern,...

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The effects of mismatch parameters on isochromatic fringe patterns were studied using the technique of photoelasticity. First, the mathematical equations of isochromatic fringes were derived for singular stress field near a bi-material notch.

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Turkey’s per capita GDP is catching up and in purchasing power parity had reached 30% of the EU-27 average in 2006. The distribution of this income is very broad, both across households and across regions. The average household income in the city of Trabzon in the north-east of Turkey was only 30% of the country average (2003) whereas incomes in Ankara and Istanbul were 65% and 85% higher than the average. The specialisation of the big cities on the service sector and the shift to the fringes of these agglomerations by manufacturing industries is set to change migration patterns..

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Fringe Analysis In Chapters 3 and 6–9 we have given a description of classical interferometry, holographic interferometry, moir´ , speckle and photoelasticity. The outcome of all these techniques is e a set of fringes called interferograms. For many years, the analysis of these interferograms has been a matter of manually locating the positions and numbering of the fringes. With the development and decreasing cost of digital image processing equipment, a lot of effort has been made into what is termed digital fringe pattern measurement techniques....

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Moir´ Methods. Triangulation e Figure 3.2 is an illustration of two interfering plane waves. Let us look at the figure for what it really is, namely two gratings that lie in contact, with a small angle between the grating lines. As a result, we see a fringe pattern of much lower frequency than the individual gratings. This is an example of the moir´ effect and the resulting fringes are e called moir´ fringes or a moir´ pattern. Figures 3.4, 3.8 and 3.9 are examples of the same e e effect. The mathematical description of moir´ patterns resulting from the superposition e...

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