Applications of State of the Art NDT Techniques in Bridge Inspections

Abstract This article introduces the author's accumulated experience in applying state of art NDT techniques bridge special inspections. The and their applications introduced this paper, including some examples from actual inspections, are Ultrasound Tomography, Impact‐Echo Impulse‐Response. main those systems inspections evaluation post‐tensioned bridges' ducts' injection as prestressing system is an internal embedded inside concrete structure, integrity road decks surface structures (especially with asphalt pavement) detection hidden faults damages structures. objective a inspection to evaluate condition by onsite testing, sample taking laboratory examinations. Regular yield only limited results. Reliable data required for repair planning setting its logical timing ensuring safe usage. Suitable significantly assist overcoming downfalls regular use, author has proven large number cases.