Acoustic Surface Wave Condition Monitoring of Subsea Concrete Structure

Recent advances in hardware and software have generated a remarkable enhancement in the image quality and have broadened the obtainable information spectrum. Acoustic Surface Wave (ASW) is a naturally occurring phenomenon in surface of materials under load (force, temperature, etc). Spectral Analysis of Surface Wave (SASW) condition monitoring is related to the identification of certain vibration parameters due to surface waves and their measurement with a view to diagnose underwater part of concrete structures. Condition monitoring of subsea concrete structure of Shahid Rajaee Harbor using SASW is discussed in this paper. The paper also pays some attention to methods for underwater nondestructive testing of concrete and detecting of faults. Proposed method refers to the determination of the propagation times between the transducer sample and imapctor by determining the frequency dependent on the material.