[1] Leendertz J., Interferometric displacement measurement on scattering surfaces utilizing speckle effect, Journal of Physics E: Scientific Instruments, Vol. 3, No. 3, p. 214, 1970.
[2] Leendertz J. and Butters J., An image-shearing speckle-pattern interferometer for measuring bending moments, Journal of Physics E: Scientific Instruments, Vol. 6, no. 11, p. 1107, 1973.
[3] Hung Y. Y., A speckle-shearing interferometer: a tool for measuring derivatives of surface displacements, Optics Communications, Vol. 11, No. 2, pp. 132-135, 1974.
[4] Hung Y., Shearography: a new optical method for strain measurement and nondestructive testing, Optical Engineering, Vol. 21, No. 3, p. 213391, 1982.
[5] Hung Y., Applications of digital shearography for testing of composite structures, Composites Part B: Engineering, Vol. 30, No. 7, pp. 765-773, 1999.
[6] Choi S. W. and Lee J. H., Nondestructive evaluation of internal defects for composite materials by using shearography, Key engineering materials, 2004, Vol. 270: Trans Tech Publ, pp. 781-786.
[7] Liu Z., Gao J., Xie H. and Wallace P., NDT capability of digital shearography for different materials, Optics and Lasers in Engineering, Vol. 49, No. 12, pp. 1462-1469, 2011.
[8] Akbari D., Soltani N. and Farahani M., 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.
[9] Barmouz M., Behravesh A. H., Reshadi F. and Soltani N., Assessment of defect detection in wood–plastic composites via shearography method, Journal of Thermoplastic Composite Materials, Vol. 29, No. 1, pp. 28-36, 2016.
[10] Akbari D. and Asemani H., Analysis of laser interfrometry parameters in the evaluation of defects in the polymer matrix composites, Modares Mechanical Engineering, Vol. 17, No. 9, pp. 372-380, 2017.
)