[1] J. Leendertz, J. Butters, An image-shearing speckle-pattern interferometer for measuring bending moments, Journal of Physics E: Scientific Instruments, Vol. 6, No. 11, pp. 1107, 1973.
[2] D. Akbari, N. Soltani, Investigation of loading parameters in detection of internal cracks of composite material with digital shearography, World Applied Sciences Journal, Vol. 21, No. 4, pp. 526-535, 2013.
[3] S. Sabbaghi Farshi, D. Akbari, N. Saberi Nasrabad, Non-destructive measurement of internal defects using shear laser interferometry method, Iranian Journal of Manufacturing Engineering, Vol. 7, No. 1, pp. 45-52, 2020.
[4] G. BuSSe, D. Wu, W. Karpen, Thermal wave imaging with phase sensitive modulated
thermography, Journal of Applied Physics, Vol. 71, No. 8, pp. 3962-3965, 1992.
[5] D. Wu, G. Busse, Lock-in thermography for nondestructive evaluation of materials, Revue générale de thermique, Vol. 37, No. 8, pp. 693-703, 1998.
[6] H. Gerhard, G. Busse, Lockin-ESPI interferometric imaging for remote non-destructive testing, NDT & E International, Vol. 39, No. 8, pp. 627-635, 2006.
[7] A. E. Dolinko, G.H. Kaufmann, Enhancement in flaw detectability by means of lockin temporal speckle pattern interferometry and thermal waves, Optics and lasers in engineering, Vol. 45, No. 6, pp. 690-694, 2007.
[8] H. Gerhard, G. Busse, Thermal Waves for Imaging of Defects with Lockin‐Speckle Interferometry, Strain, Vol. 43, No. 3, pp. 229-234, 2007.
[9] G. Kim, S. Hong, G.H. Kim, K.-Y. Jhang, Evaluation of subsurface defects in fiber glass composite plate using lock-in technique, International Journal of Precision Engineering and Manufacturing, Vol. 13, No. 4, pp. 465-470, 2012.
[10] D. Buchta, C. Heinemann, G. Pedrini, C. Krekel, W. Osten, Lock-in-shearography for the detection of transport-induced damages on artwork, in: Optics for Arts, Architecture, and Archaeology VI, International Society for Optics and Photonics, 2017, pp. 103310G.
[11] D. Francis, R. Tatam, R. Groves, Shearography technology and applications: a review, Measurement science and technology, Vol. 21, No. 10, pp. 102001, 2010.
[12] J. Liu, W. Yang, J. Dai, Research on thermal wave processing of lock-in thermography based on analyzing image sequences for NDT, Infrared Physics & Technology, Vol. 53, No. 5, pp. 348-357, 2010.
[13] M. Takeda, H. Ina, S. Kobayashi, Fourier-transform method of fringe-pattern analysis for computer-based topography and interferometry, JosA, Vol. 72, No. 1, pp. 156-160, 1982.
[14] D. C. Ghiglia, L.A. Romero, Robust two-dimensional weighted and unweighted phase unwrapping that uses fast transforms and iterative methods, JOSA A, Vol. 11, No. 1, pp. 107-117, 1994.
[15] D. Akbari, N. Soltani, M. Farahani, Numerical and experimental investigation of defect detection in polymer materials by means of digital shearography with thermal loading, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, Vol. 227, No. 3, pp. 430-442, 2013.
[16] P. Menner, G. Busse, Lockin-interferometric imaging of thermal waves for nondestructive testing, in: Optical Measurement Systems for Industrial Inspection VII, International Society for Optics and Photonics, 2011, pp. 808223.