including the Navy’s Fleet Readiness Centers (FRC) are faced with replacing aging chemical and film-based radiographic imaging systems used for non-destructive testing (NDT) (or nondestructive inspection (NDI)) with systems that do not rely on such an approach—so called computed radiography (CR) systems. However there are benefits, requirements, concerns, and challenges associated with implemen...

Nondestructive testing and defect detection using optical techniques has been extensively investigated. This communication presents a simple method for defect detection in deformed circular plates using moiré deflectometry. The experimental arrangement is simple, inexpensive and does not require elaborate vibration isolation requirements.

Nondestructive testing techniques have attracted growing interest in the last few years due to their ability assess material properties without damaging specimens. The free-free resonance method is a nondestructive technique based on analysis of natural frequencies sample. This study presents and discusses applicability this technique, traditionally used soils, for mechanical characterization r...