By inducing multiple impacts on a concrete structure on a moving platform and measuring the audible response using a microphone array, delaminations in concrete from the resulting frequency response similar to traditional hammer sounding and impact echo. For nearly a decade, BDI has been a pioneer in this technology developing both its own field data collection system and the AI-ML powered analytics model for measuring and mapping delamination on over 60 million square feet of concrete.

Infrared Thermography is an electromagnetic method that involves measuring the infrared energy emitted from a concrete structure and identifying possible defects such as delamination based on unexpected temperature variations. BDI deploys this method using high-precision IR cameras mounted on drones and vehicles to scan entire structures at high-speed with results generated as feature maps.

By directing an electromagnetic wave into a concrete structure and measuring the response, features such as steel reinforcement, voids, the concrete backwall, and other features of interest can be detected. This work is often completed in scans along a given element on a test grid to generate a 3D view of the features, their depth, and their condition. BDI has developed its own ASNT TC-1A certification program for its GPR professionals and deploys a variety of different technology platforms depending on the speed, precision, or depth of testing needed.

By inducing an impact on a concrete structure and measuring the frequency response, the length and condition of a concrete element can be measured with data typically being collected along a test grid to evaluate the entire element. BDI has developed an efficient field data collection program and automated workflow to accelerate the production of the results.