Innovations in Non-Destructive Testing for Aerospace: A Focus on Penetrant and Radiographic Methods

Abstract

Innovations in non-destructive testing (NDT) techniques are pivotal for ensuring safety, reliability, and performance in the aerospace industry, where components must meet stringent quality standards. Among these, penetrant and radiographic testing methods have undergone significant advancements, driven by the need for higher precision, efficiency, and compliance with evolving industry regulations. Modern penetrant testing leverages advanced fluorescent dyes, automated application systems, and AI-driven defect detection to enhance sensitivity and reduce human error. Similarly, radiographic testing has evolved with the integration of digital radiography (DR) and computed tomography (CT), providing high-resolution imaging and 3D visualization of internal structures. These innovations not only improve the accuracy of defect identification but also streamline inspection processes, reduce downtime, and support the adoption of lightweight, complex materials like composites and additive-manufactured components. This paper explores recent advancements in these methods, their applications in aerospace, and the challenges and opportunities they present for future NDT solutions.