Use of two wavelengths in microscopic TV holography for nondestructive testing

• Main Authors: Upputuri, Paul Kumar, Umapathy, Somasundaram, Pramanik, Manojit, Kothiyal, Mahendra Prasad, Nandigana, Krishna Mohan
• Other Authors: School of Chemical and Biomedical Engineering
• Format: Article
• Language: English
• Published: 2014
• Subjects: DRNTU::Engineering::Materials::Photonics and optoelectronics materials
• Online Access: https://hdl.handle.net/10356/101498; http://hdl.handle.net/10220/24220
• Institution: Nanyang Technological University

Single wavelength TV holography is a widely used whole-field noncontacting optical method for nondestructive testing (NDT) of engineering structures. However, with a single wavelength configuration, it is difficult to quantify the large amplitude defects due to the overcrowding of fringes in the def...