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Open AccessArticle

Crack Assessment of Wheel Hubs via an Ultrasonic Transducer and Industrial Robot

School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
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Author to whom correspondence should be addressed.
Sensors 2018, 18(12), 4336; https://doi.org/10.3390/s18124336
Received: 16 November 2018 / Revised: 4 December 2018 / Accepted: 5 December 2018 / Published: 8 December 2018
(This article belongs to the Section State-of-the-Art Sensors Technologies)
Crack assessment when making fitness-for-service decisions requires a thorough examination of crack location and size in critical areas. An ultrasonic transducer is used for such assessments, but traditional methods cannot cope with complex rotators, such as wheel hubs. We present a model of robot-assisted crack growth assessment in wheel hubs. We integrate a six-degrees-of-freedom (DOF) industrial robot and a turntable to form a robot-assisted ultrasonic testing (UT) system that does not use traditional UT equipment. Ultrasonic beams are focused at certain depths appropriate for achieving maximum sensitivity. We quantitatively analysed wheel hubs with longitudinal and transverse series of pre-cracks, and concluded that our system autonomously detected cracks. View Full-Text
Keywords: robot-assisted; ultrasonic transducer; castings and forgings robot-assisted; ultrasonic transducer; castings and forgings
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MDPI and ACS Style

Zhang, H.; Xu, C.; Xiao, D. Crack Assessment of Wheel Hubs via an Ultrasonic Transducer and Industrial Robot. Sensors 2018, 18, 4336.

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