A new non-contacting non-destructive testing method for defect detection in concrete

Mori, Kunio; Spagnoli, Andrea; Murakami, Yukitaka; Kondo, Gorou; Torigoe, Ippei

doi:10.1016/s0963-8695(02)00009-9

Cited by 88 publications

(42 citation statements)

References 2 publications

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“…Examples include the Schmidt Hammer [8][9] (rebound), the Windsor Probe [8][10] (penetrating), Flat Jack Testing [11][12] (applied to masonry), or methods without contact [13].…”

Section: Strength Based Methodsmentioning

confidence: 99%

Towards Fully Automated Tunnel Inspection: A Survey and Future Trends

Balaguer

Montero

Victores

et al. 2014

Proceedings of the International Symposium on Automation and Robotics in Construction (IAARC)

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-Tunnels environments are characterized by dust, humidity, and absence of natural light. Artificial and natural impacts, change in load criteria, or the simple effect of ageing, make tunnels require inspection and maintenance. These operations are commonly performed by human workers taking time and expertise without guarantee quality control. Robotic tunnel inspection and maintenance (RTIM) introduces high productivity, quality and repetitiveness. This paper describes the current trends in the subject, and introduces new technologies such as scenario modeling, robotic platforms, image and ultrasound sensors, control algorithms and decision making strategies. Additionally, the result of several recent and ongoing projects will be presented.

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“…Examples include the Schmidt Hammer [8][9] (rebound), the Windsor Probe [8][10] (penetrating), Flat Jack Testing [11][12] (applied to masonry), or methods without contact [13].…”

Section: Strength Based Methodsmentioning

confidence: 99%

Towards Fully Automated Tunnel Inspection: A Survey and Future Trends

Balaguer

Montero

Victores

et al. 2014

Proceedings of the International Symposium on Automation and Robotics in Construction (IAARC)

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“…Limitations and associated problems of the method include spectral effects of the impactor, the receiving device, and the interpretation of other reflected waves [26]. Improvements are reported using noncontacting devices for both impact generation (shock waves) and response monitoring (laser vibrometer to measure surface velocity) [27].…”

Section: Testing and Evaluationmentioning

confidence: 99%

Concrete and Cement

Vélez

2008

Ceramic and Glass Materials

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Inorganic concretes are reviewed, emphasizing two major areas: construction concretes and high temperature (refractory) concretes. Although such materials are intended for completely different applications and markets, they have in common that they are made from inorganic ceramic oxides and both materials are used for structural purposes. Current applications and research topics representing new challenges are summarized.

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“…Several studies related to the detection of surface flaws in civil infrastructures using different imaging techniques have been reported [9][10][11][12][13][14][15][16][17][18][19]. Microwave and millimeter wave imaging techniques have been used to detect fatigue cracks in metal [9,10] and concrete [11,12].…”

Section: Introductionmentioning

confidence: 99%

“…Laser technique has also been used for flaw detection in civil infrastructures. Laser Doppler Vibrometer (LDV) was used to detect artificial surface flaws in concrete [15]. However, this method needed external impact from shock tubes.…”

Section: Introductionmentioning

confidence: 99%

Inspection of Metal and Concrete Specimens Using Imaging System with Laser Displacement Sensor

2017

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Flaws such as cracks and impact damages initially occur on the surface of the infrastructure materials and propagate internally causing further degradation. These infrastructure materials have different physical and chemical composition and have different geometric shapes, which can mask the indication of minute surface flaws. There is a need to develop systems that can detect these surface flaws irrespective of their properties and shapes. We propose an imaging system capable of interrogating plain and non-plain structures for the purpose of detection and evaluation of surface flaws such as cracks and impact damages using a laser displacement sensor (LDS). The developed system consists of LDS mounted on the scanner, which is capable of raster scanning over the material under test. The reading of displacement from the sensor head to the laser spot on the surface of the test material is then used to generate two-dimensional (2-D) images in real time, which can be used to detect minute surface flaws. This paper presents the results of inspection of metal and concrete test specimens. 2-D images through the cut of the metal profile are also generated to demonstrate the ability of a system to image interior structure.

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A new non-contacting non-destructive testing method for defect detection in concrete

Cited by 88 publications

References 2 publications

Towards Fully Automated Tunnel Inspection: A Survey and Future Trends

Towards Fully Automated Tunnel Inspection: A Survey and Future Trends

Concrete and Cement

Inspection of Metal and Concrete Specimens Using Imaging System with Laser Displacement Sensor

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