scholarly journals Optical fringe multiplication technique with TEM nano-moiré method

2005 ◽  
Vol 16 (2) ◽  
pp. 529-534 ◽  
Author(s):  
Huimin Xie ◽  
Zhanwei Liu ◽  
Daining Fang ◽  
Fulong Dai ◽  
Yongming Xing ◽  
...  
Keyword(s):  
Moire Method ◽  
Fringe Multiplication

A Phase Compensation Technique of Sampling Moiré Method for Accurate Single-Shot Phase Analysis

2011 ◽  
Vol 70 ◽  
pp. 243-248
Author(s):  
Shien Ri ◽  
Takashi Muramatsu ◽  
Masumi Saka
Keyword(s):  
Computer Simulation ◽  
Phase Analysis ◽  
Phase Error ◽  
Linear Interpolation ◽  
Small Displacement ◽  
Single Shot ◽  
Phase Compensation ◽  
Compensation Technique ◽  
Moire Method ◽  
Effective Phase

Recently, a technique for fast and accurate phase analysis called sampling moiré method has been developed for measurement of small-displacement distribution. In this study, a distribution of phase error caused by linear interpolation in case with mismatch between the sampling pitch and the grating pitch is theoretically analyzed. Moreover, a technique for effective phase compensation is proposed to reduce the periodic phase error. The performance of our compensation method is validated by a computer simulation. Phase analysis can be performed more accurately even in the case that the sampling pitch does not match to the grating pitch strictly.

An investigation of photoresists for use in optical strain analysis

1970 ◽  
Vol 5 (3) ◽  
pp. 162-168 ◽  
Author(s):  
A Luxmoore ◽  
R Hermann
Keyword(s):  
Strain Measurement ◽  
Strain Analysis ◽  
Surface Strain ◽  
High Contrast ◽  
Moire Method ◽  
Optical Strain

Some commercial photoresists have been examined to assess their suitability for use with the moiré method of surface-strain measurement. As most of these materials do not produce a pattern of high contrast directly, some etching and plating procedures are also described. Combined with correct illumination, these processes will produce grids of sufficient contrast for most applications.

Phase shifting SEM moiré method

2004 ◽  
Vol 36 (4) ◽  
pp. 291-297 ◽  
Author(s):  
Huimin Xie ◽  
Haixia Shang ◽  
Fulong Dai ◽  
Biao Li ◽  
Yongming Xing
Keyword(s):  
Phase Shifting ◽  
Moire Method

On fringe multiplication by superimposition of negatives

1975 ◽  
Vol 15 (6) ◽  
pp. 237-239 ◽  
Author(s):  
N. K. Das Talukder ◽  
P. Ghosh
Keyword(s):  
Fringe Multiplication

scholarly journals A study on the digital nano-moiré method and its phase shifting technique

2004 ◽  
Vol 15 (9) ◽  
pp. 1716-1721 ◽  
Author(s):  
Huimin Xie ◽  
Zhanwei Liu ◽  
Daining Fang ◽  
Fulong Dai ◽  
Hongjun Gao ◽  
...  
Keyword(s):  
Phase Shifting ◽  
Phase Shifting Technique ◽  
Moire Method

scholarly journals Computer-automated shadow moiré method and applications for 3D surface profiling

2021 ◽  
Author(s):  
Rui Zhao
Keyword(s):  
Least Square ◽  
Automated System ◽  
Image Subtraction ◽  
Full Field ◽  
Surface Profiling ◽  
Shadow Moire ◽  
Shadow Moiré ◽  
3D Surface ◽  
Measurement Resolution ◽  
Moire Method

Among numerous methods for 3D surface profiling, classic shadow moiré method has been kept as the most popular one due to its full-field feature and low cost. This thesis focuses on a computer-vision shadow moiré method with a scope to improve the measurement resolution, accuracy and efficiency. The computer automation is basically realized through the introduction of a phase-shifting technique that is incorporated with a new multi-grid least-square unwrapping algorithm. The method is enhanced by implementing a few additional image processing techniques. These techniques, when implemented, result in improved measurement accuracy and enable easy applications to irregularly shaped surfaces. The study also proposes a new, automated system calibration approach that is based on a real-time image subtraction. A data normalization process is studied to resolve possible confusions in the presentation of the original data. The verification test results show that the modified shadow moiré technique has achieved the initial goal, in that the measurement resolution now reaches a few percentage of the fringe sensititivity.

scholarly journals Interferometric Photoelasticity by Using the Moiré Method

1976 ◽  
Vol 42 (496) ◽  
pp. 346-350
Author(s):  
Hiroshi UOZATO ◽  
Yosio SOEZIMA
Keyword(s):  
Moire Method
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