US EditionBroadband ultrasonic imaging shows defects in all types of concrete
The adaptive system uses broadband ultrasonic signals and laser Doppler vibrometry to produce clear 3D maps of concrete defects for improved maintenance decisions.
- A collaborative team at Tohoku University, Los Alamos National Laboratory and Texas A&M University published in Applied Physics Letters a broadband ultrasonic imaging system for concrete, enabling high-resolution 3D defect maps.
- Achieving high-quality imaging is complicated by absorption and scattering, as concrete contains diverse materials that scatter and absorb sound, making clear internal imaging difficult.
- Employing a vibrometer and adapted imaging algorithms, the team used two devices to generate broadband ultrasonic signals and process outgoing waves, as Yoshikazu Ohara stated.
- For repair planners and field technicians, the technique produces high-resolution 3D images showing defect depth, size, and three-dimensional extent for more efficient concrete structure repairs.
- By improving defect-to-background contrast, the adaptive broadband system enhances nondestructive testing for roads and bridges by automatically adjusting frequency to the material, researchers said.
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New ultrasonic imaging system detects deadly defects in concrete
The range of materials that concrete contains scatters normal sound waves, making clear imaging difficult to obtain.
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NewswiseBroadband ultrasonic imaging shows defects in all types of concrete
Concrete structures like roads and bridges require nondestructive testing methods to identify interior defects without destroying their structure. Most methods send sound waves into the material and capture the waves that echo back to create images of what's inside and find defects. This process is similar to ultrasounds used to see inside the human body.
Adaptive Ultrasonic Imaging Redefines Concrete Infrastructure Inspection Adaptive Ultrasonic Imaging Redefines Concrete Infrastructure Inspection
Adaptive Ultrasonic Imaging Redefines Concrete Infrastructure Inspection Across the global construction and infrastructure sector, the condition of ageing concrete assets has become a strategic concern rather than a routine maintenance issue. Roads, bridges, tunnels and elevated structures are carrying heavier traffic loads, facing more extreme weather, and being asked to perform far beyond their original design life. To address this non-destruc…
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