International Research Award on Civil and Environmental Engineering

Interpreting ultrasonic waveforms in civil engineering structures is inherently complex, particularly when tilted boundaries cause multiple reflections, mode conversions, and overlapping echoes. Wavefield simulations have become an essential tool for analyzing such complex signal behavior and supporting non-destructive testing (NDT) applications. This study focuses on evaluating the accuracy and computational efficiency of commonly used numerical simulation methods for ultrasonic wave propagation in civil engineering contexts. Challenges in Ultrasonic Waveform Interpretation Ultrasonic inspections of large civil engineering structures often involve heterogeneous materials and complex geometries that distort waveforms. Tilted interfaces and internal defects introduce signal interference that complicates interpretation. Accurate numerical simulations are therefore critical for understanding wave behavior, validating experimental measurements, and improving defect detection reliability...

The rapid growth of electronic waste has made the recycling of non-metallic fractions of waste printed circuit boards (NMF-WPCBs) a pressing environmental challenge. Due to their complex composition, NMF-WPCBs are often landfilled or incinerated, leading to secondary pollution and loss of valuable resources. This review addresses the urgent need for sustainable reuse pathways by examining the potential of NMF-WPCBs as functional materials in civil engineering applications. Multiscale Composition and Material Characteristics NMF-WPCBs are composed of polymers, glass fibers, and residual fillers arranged in a multiscale structure that governs their mechanical and chemical behavior. Understanding these characteristics is essential for their effective integration into construction materials. The review analyzes their physical, thermal, and microstructural properties, which influence bonding, durability, and overall performance in civil engineering systems. Enhancement Methods and Theore...