Real-Time Calibration Technique for Phase Shift Shadow Moiré

2017 ◽  
Vol 54 (9) ◽  
pp. 091202
Author(s):  
颜菁菁 Yan Jingjing ◽  
杜虎兵 Du Hubing
Keyword(s):  
Phase Shift ◽  
Real Time ◽  
Calibration Technique ◽  
Shadow Moire ◽  
Shadow Moiré ◽  
Time Calibration

A Multi-Range Merging Method for Phase Shift Shadow Moiré Profilometry with Large Depth Measuring Range

2016 ◽  
Vol 36 (12) ◽  
pp. 1212001
Author(s):  
艾永旭 Ai Yongxu ◽  
周翔 Zhou Xiang ◽  
杜虎兵 Du Hubing ◽  
郭家玉 Guo Jiayu ◽  
费梓轩 Fei Zixuan ◽  
...  
Keyword(s):  
Phase Shift ◽  
Measuring Range ◽  
Large Depth ◽  
Shadow Moire ◽  
Shadow Moiré ◽  
Merging Method

Demodulation of Phase Shift Shadow Moiré Fringe Pattern by Orthonormalzing Method

2017 ◽  
Vol 46 (7) ◽  
pp. 712002
Author(s):  
杜虎兵 DU Hu-bing ◽  
颜菁菁 YAN Jing-jing
Keyword(s):  
Phase Shift ◽  
Fringe Pattern ◽  
Shadow Moire ◽  
Shadow Moiré ◽  
Moire Fringe ◽  
Moiré Fringe

Demodulating the Phase of Phase-Shifting Shadow Moiré Using Arbitrary Phase Shift

2012 ◽  
Vol 32 (9) ◽  
pp. 0912003
Author(s):  
杜虎兵 Du Hubing ◽  
赵宏 Zhao Hong ◽  
李兵 Li Bing ◽  
赵金磊 Zhao Jinlei ◽  
曹士旭 Cao Shixu
Keyword(s):  
Phase Shift ◽  
Phase Shifting ◽  
Shadow Moire ◽  
Shadow Moiré ◽  
Arbitrary Phase ◽  
Arbitrary Phase Shift

Compensating Algorithm for the Nonlinear Phase-Shift Error for Phase-Shifting Shadow Moiré Technique

2012 ◽  
Vol 32 (5) ◽  
pp. 0512006
Author(s):  
杜虎兵 Du Hubing ◽  
赵宏 Zhao Hong ◽  
李兵 Li Bing ◽  
赵金磊 Zhao Jinlei ◽  
曹士旭 Cao Shixu
Keyword(s):  
Phase Shift ◽  
Phase Shifting ◽  
Nonlinear Phase Shift ◽  
Shadow Moire ◽  
Shadow Moiré ◽  
Nonlinear Phase ◽  
Phase Shift Error

Topographical Evaluation of Subsea Defects in Offshore Structures Using a Shadow Moire´ Technique

1994 ◽  
Vol 116 (2) ◽  
pp. 114-116
Author(s):  
P. M. MacKenzie ◽  
C. A. Walker
Keyword(s):  
Real Time ◽  
Detailed Examination ◽  
Offshore Structures ◽  
Optical Techniques ◽  
Shadow Moire ◽  
Shadow Moiré ◽  
Corrosion Pitting ◽  
Surface Profiles ◽  
Moire Method

Optical techniques based on the moire´ phenomenon are powerful tools with applications over a range of engineering inspection/measurement problems. A study of the application of the shadow moire´ method in connection with detailed examination of replicas taken from damaged subsea zones of offshore structures has been performed. Measurements of the surface profiles of areas altered by processes such as corrosion pitting, and remedial grinding of cracks, were obtained using the technique. This method offers a convenient “real-time” approach to visualizing height contours.

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