Circular geometric moiré for degradation prediction of mechanical components performing angular oscillations

Abstract An experimental technique based on time-averaged circular geometric moire for optical measurement of angular oscillations is presented in this paper. The pitch of the circular moire is preselected in such a way that angular oscillations of different amplitudes yield time-averaged moire fringes at different locations of the cover image. This optical effect enables to construct an optical scale for direct measurement of angular oscillations. The proposed technique is similar to visual cryptography, which is a cryptographic technique that allows encryption of visual information in such a way, that decryption can be done without use of any computational device. The efficiency and the applicability of the proposed technique for performance degradation prediction of rotating mechanical components is illustrated and validated by computational simulations and experimental tests.

[1]  Ching-Nung Yang,et al.  Halftone visual cryptography with minimum auxiliary black pixels and uniform image quality , 2015, Digit. Signal Process..

[2]  Minvydas Ragulskis,et al.  Applicability of time-average moiré techniques for chaotic oscillations. , 2007, Physical review. E, Statistical, nonlinear, and soft matter physics.

[3]  Lu Chen,et al.  Approach to health monitoring and assessment of rolling bearing , 2013 .

[4]  Minvydas Ragulskis,et al.  Image hiding based on time-averaging moiré , 2009 .

[5]  Ching-Nung Yang,et al.  Colored visual cryptography scheme based on additive color mixing , 2008, Pattern Recognit..

[6]  Young-Chang Hou,et al.  Visual cryptography for color images , 2003, Pattern Recognit..

[7]  Jian Ma,et al.  REAL-TIME RELIABILITY ASSESSMENT AND LIFETIME PREDICTION FOR BEARINGS USING THE INDIVIDUAL STATE DEVIATION BASED ON THE MANIFOLD DISTANCE , 2015 .

[8]  Pei-Ling Chiu,et al.  User-friendly threshold visual cryptography with complementary cover images , 2015, Signal Process..

[9]  Krzysztof Patorski,et al.  Handbook of the moiré fringe technique , 1993 .

[10]  Jian Ma,et al.  Health assessment of rotary machinery based on integrated feature selection and Gaussian mixed model , 2014 .

[11]  M. Ragulskis,et al.  Image hiding based on circular moiré fringes , 2010 .

[12]  Hao Luo,et al.  Color transfer in visual cryptography , 2014 .

[13]  Ching-Nung Yang,et al.  Generalized random grids-based threshold visual cryptography with meaningful shares , 2015, Signal Processing.

[14]  Wei Sun,et al.  Non-expansible XOR-based visual cryptography scheme with meaningful shares , 2015, Signal Process..

[15]  M. Gude,et al.  Multi-sensor system for in situ shape monitoring and damage identification of high-speed composite rotors , 2016 .

[16]  Bo-Suk Yang,et al.  Machine performance degradation assessment and remaining useful life prediction using proportional hazard model and support vector machine , 2012, WCE 2010.

[17]  Y. Y. Hung,et al.  Time-averaged moire method for in-plane vibrational analysis , 1979 .