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.
- January 27: Applied Physics Letters published research showing researchers from Tohoku University, Los Alamos National Laboratory, and Texas A&M University created an adaptive 3D ultrasonic imaging system for concrete.
- Because concrete mixes scatter and absorb sound, nondestructive testing is needed to detect interior defects in concrete structures like roads and bridges without demolition.
- Using two devices, the team sent broadband frequencies into concrete with a frequency generator while a laser Doppler vibrometer captured outgoing waves, processed by imaging algorithms adapted for broadband ultrasonic data.
- Repair planners and field technicians receive high-resolution 3D maps of internal damage that detail concrete defects' depth, size, and 3D extent, enabling more efficient repair planning.
- Unlike conventional ultrasound systems, it avoids transducer swapping and manual frequency tuning, as Yoshikazu Ohara said: `In our approach, the ultrasonic wave is broadband, using a wide range of ultrasonic frequencies rather than operating around a single, fixed frequency`.
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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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