A Comprehensive Review of MIRA Ultrasonic Tomography for Advanced Non-Destructive Testing in Concrete Structures

Author

Siranjeevi S, Elakiya Sri S, Dr. Vennila A


Abstract

 The assessment of internal conditions in reinforced concrete structures is a critical component of maintaining structural integrity, ensuring public safety, and optimizing lifecycle management of civil infrastructure. Traditional non-destructive testing (NDT) methods, while useful, often provide limited, indirect data and require extensive surface preparation. This comprehensive review examines the recent advancements in ultrasonic shear-wave tomography, specifically focusing on the MIRA device framework. By utilizing a multi-channel array of dry-point-contact (DPC) transducers and advanced Synthetic Aperture Focusing Technique (SAFT) image reconstruction algorithms, this technology enables high-resolution, three-dimensional visualization of concrete interiors. Drawing upon recent case studies and literature, including detailed assessments of concrete bridge deck overlays (Sanderson et al., 2022), this paper reviews the fundamental operational principles, data visualization capabilities, defect detection accuracy, and structural applications of MIRA ultrasonic tomography in contrast to conventional techniques. The findings underscore a paradigm shift from point-by-point anomaly detection to comprehensive volumetric imaging in structural diagnostics.



Keywords

MIRA, Ultrasonic Tomography, Non-Destructive Testing, Concrete Structures, SAFT



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References


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