Water Path Control in Adhesive-Bonded Metal Panels- A Practical Guide

https://immersion-scan-analysis.inkharbory.com/posts/manual-and-automated-ndt-for-ship-hull-joints-checks-that-matter

Water Path Control in Adhesive-Bonded Metal Panels: A Practical Guide Bonded metal sheets may need checks for changes in bond quality. Water carries sound between the transducer and the part without firm probe contact