Authors : Sonali Dhudse

Volume/Issue : Volume 11 - 2026, Issue 4 - April

Google Scholar : https://tinyurl.com/38d8eads

Scribd : https://tinyurl.com/3xemu4we

DOI : https://doi.org/10.38124/ijisrt/26apr2484

Note : A published paper may take 4-5 working days from the publication date to appear in PlumX Metrics, Semantic Scholar, and ResearchGate.

Abstract : Non-destructive testing (NDT) techniques have become indispensable in structural engineering for evaluating material integrity, detecting defects, and ensuring the safety and durability of infrastructure without causing damage. This review paper presents a comprehensive overview of advanced NDT methods and their applications in modern structural assessment. Conventional techniques such as ultrasonic pulse velocity, rebound hammer testing, and radiography are discussed alongside emerging technologies including ground-penetrating radar, infrared thermography, acoustic emission monitoring, and laser-based methods. The integration of digital tools, such as artificial intelligence and machine learning, with NDT systems is also examined, highlighting their role in enhancing defect detection accuracy, data interpretation, and predictive maintenance strategies. Furthermore, the concept of real-time structural health monitoring through sensor networks and IoT-enabled systems is explored, emphasizing its significance in smart infrastructure development. The review critically analyzes the advantages, limitations, and practical challenges associated with each technique, including issues related to cost, accessibility, data reliability, and environmental influence. Comparative insights are provided to guide the selection of appropriate NDT methods for different structural materials and conditions. The study also identifies current research gaps and future directions, particularly in the areas of automation, hybrid testing approaches, and digital twin integration. Overall, this paper aims to serve as a valuable reference for researchers and practitioners seeking to adopt advanced, efficient, and reliable NDT techniques for sustainable structural engineering practices.

Keywords : Non-Destructive Testing; Structural Health Monitoring; Ground-Penetrating Radar; Infrared Thermography; Artificial Intelligence.

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