Computer-Aided Fringe-Pattern Analyzer (CAFRAN) (A Case of Photoelastic Fringe)
نویسندگان
چکیده
منابع مشابه
Photoelastic Fringe Pattern Analysis by Image Processing
This work presents a strategy for automatic analysis of photoelastic fringe patterns. The study is focused on the analysis of color type photoelastic fringes. By capturing and analyzing color fringes automatically, the difference between principal stresses of a sample are quantitatively determined. Among many techniques available in literature, the color photoelasticity is chosen as the basis f...
متن کاملPhotoelastic Fringe Pattern Analysis by Real-time Phase-shifting Method
This paper describes high-speed phase-shifting method for the real-time analysis of isochromatic and isoclinic parameters in photoelasticity. By rotating an analyzer at a constant rate and an output quarter-wave plate at a double rate of the analyzer and recording images by a CCD camera continuously, sequential phase-shifted images which brightness is integrated by sensors are obtained. Then, t...
متن کاملFinite Element Simulation of Scattered-light Photoelastic Fringe Patterns
Scattered-light photoelasticity provides a nondestructive approach for analyzing the stresses in a 3-D photoelastic model. However the applicability of scattered-light photoelasticity is quite limited. In this paper, a finite element scheme is proposed to simulate the fringe patterns resulted from scattered-light photoelastic experiment. Theoretical equations are derived to integrate the retard...
متن کاملInverse problem of photoelastic fringe mapping using neural networks
This paper presents an enhanced technique for inverse analysis of photoelastic fringes using neural networks to determine the applied load. The technique may be useful in whole-field analysis of photoelastic images obtained due to external loading, which may find application in a variety of specialized areas including robotics and biomedical engineering. The presented technique is easy to imple...
متن کاملCamera focusing based on fringe pattern matching.
A method of camera focusing based on fringe pattern matching is presented. In the method, the variance of the mismatch function is used as a focus measure. The focus measure was examined in a fringe analysis system, and the results from the three well-known focus measures-gray-level variance, image gradient, and Laplacian-were also obtained in the experiment as a comparison. The experimental re...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
سال: 1980
ISSN: 0387-5008,1884-8338
DOI: 10.1299/kikaia.46.666