Research and Development of Infrastructure Diagnostic Robot System (ALP) for Detailed Inspection of Concrete Structures at Elevated Heights

Nojima, Junichiro; Mizobuchi, Toshiaki; Hayashi, Kenji

doi:10.3151/jact.17.526

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…The second one (Figure 8) is the diagnostic robot system (ALP) for a detailed inspection of concrete structures at elevated heights [17]. ALP uses a vacuum suction pad improved by testing on real structures as a moving mechanism.…”

Section: Structural Health Monitoring With the Use Of Robotic Devicesmentioning

confidence: 99%

Wheeled Robot Dedicated to the Evaluation of the Technical Condition of Large-Dimension Engineering Structures

et al. 2020

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There are many reasons why engineering structures are at risk of losing their loading capacity during their long-term exploitation, which may lead to hazardous states. In such cases, structures must be strengthened. The most popular technique of strengthening is based on the use of composite materials—fiber-reinforced polymer (FRP) elements attached to the structure with the special resins. FRP elements are applied externally, often in hard to reach places, which makes it difficult to diagnose the durability and quality of such a connection. In this study, a combination of a modern thermographic method was proposed, which makes it possible to assess the degree of damage to the contact of the structure with the composite material along with the running platform (wheeled robot) equipped with a set of diagnostic sensors. The development potential of such a solution for subsequent projects was also indicated.

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Section: Structural Health Monitoring With the Use Of Robotic Devicesmentioning

confidence: 99%

Wheeled Robot Dedicated to the Evaluation of the Technical Condition of Large-Dimension Engineering Structures

et al. 2020

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“…In Japan, the number of road bridges has reached approximately 700,000 and it is estimated that half the number of bridges will be older than 50 years in 2030 [1]. Therefore, in recent years, the number of concrete structures and cost of inspection have arisen [2]. To automate the tasks of detecting cracks and peeling of the structure, various type of unmanned aerial vehicles (UAVs) and wall-climbing robots have been considered for performing inspections.…”

Section: Introductionmentioning

confidence: 99%

Propeller-Type Wall-Climbing Robot for Visual and Hammering Inspection of Concrete Surfaces

Nishimura,

Mochiyama,

Yamaguchi

2024

IEEE Access

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Periodic inspections are necessary to maintain concrete infrastructures. As efficient and lowcost inspection methods, visual inspection robots to detect cracks and hammering inspection robots to detect internal defects have been developed. However, these robots can generally perform only a single task. To realize multiple tasks by a robot, multiple measurement sensors need to be installed considering the stability of the robot on the wall and measurement performance. Parameters such as weight and size must be designed to ensure the stability of the robot on the wall. We propose a propeller-type wall-climbing robot that can capture images and perform hammering simultaneously while moving on the wall. The static model of robot was established by considering parameters such as the direction of the propeller's thrust force, weight, and placement of the measurement sensors. This model increases the payload for sensor installation and enables movement on dusty concrete walls with a low friction coefficient. The image captured by the inspection robot is used for crack detection and width estimation. We confirmed that the hammering sounds generated by the robot showed different frequency characteristics on clear and defective areas. The developed inspection robot showed the ability to collect adequate data for concrete health monitoring.

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Research and Development of Infrastructure Diagnostic Robot System (ALP) for Detailed Inspection of Concrete Structures at Elevated Heights

Cited by 2 publications

References 10 publications

Wheeled Robot Dedicated to the Evaluation of the Technical Condition of Large-Dimension Engineering Structures

Wheeled Robot Dedicated to the Evaluation of the Technical Condition of Large-Dimension Engineering Structures

Propeller-Type Wall-Climbing Robot for Visual and Hammering Inspection of Concrete Surfaces

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