The assessment of the structural integrity of infrastructure after extreme events is an
important application of nondestructive technology. Advancements in elastic wave-based …

A new multi-channel, automated, air-coupled, impact-echo sounding device was designed,
constructed, and demonstrated in this work. The apparatus includes seven replicated …

Nondestructive evaluation is an important tool for assurance of proper construction practices
and selection of rehabilitation procedures for civil infrastructure. Improvements in technology …

Nondestructive diagnostics of concrete structures is an important and challenging problem.
A recent introduction of array ultrasonic dry point contact transducer systems offers …

New technological advances in nondestructive testing technology have created the
opportunity to better utilize ultrasonic waves to aid in damage detection applications for …

In this article, an original multidimensional presentation format for nondestructive evaluation
point test spectral data is proposed. Time domain signals from air‐coupled impact‐echo (IE) …

This study presents a practical approach for imaging concrete pavement and bridge deck
slabs for the presence of delamination defects. Air-coupled impact resonance (impact-echo) …

The article presents the general idea of Air-Coupled Impact-Echo (ACIE) method which is
one of the non-destructive testing (NDT) techniques used in the construction industry. One of …

While concrete is the most widely used civil engineering material, damage detection and
progression in concrete structures have still proven to be difficult to address, especially …

The practical application of three different processing methods for impact-echo test data—
the classical impact-echo method, the peak frequency map, and the 4D spectrum technique …