Phased Array Ultrasonic Nondestructive Tests of Soldered Current-Carrying Bus-Bar Splices of Superconducting Magnets

Principe, R.; Vallejo, Louis Mora; Bailey, J.F.; Savary, F.; Berthet, Richard; Favier, Ludovic; Grand-Clement, Ludovic

doi:10.1109/tasc.2018.2800735

Cited by 7 publications

(7 citation statements)

References 4 publications

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“…Each wheel hub needs to be tested before it leaves the factory. As the shape of the wheel hub is complex as shown in figure 7a, X-ray is commonly used in the automatic stage, and ultrasonic testing is still used in the manual stage with low efficiency and accuracy [10]. Four flat bottom holes with a diameter of 0.8 mm were made on the inner wall of the wheel hub.…”

Section: Methodsmentioning

confidence: 99%

“…Ultrasonic testing has been applied in non-destructive testing of revolved workpieces [3][4][5][6][7][8][9]. Among these, the frame scan attached to the rotary shaft is the main form of detection and the parts that need to be tested are usually solid axes or pipe fittings with little change in diameter [10]. However, the parts with more complex shape and structure like wheel hub and turbine is still relatively rare to be tested.…”

Section: Introductionmentioning

confidence: 99%

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Robot-Assisted Ultrasonic Testing Technology for Complex Revolved Workpiece

Wang,

Zhang,

et al. 2024

J. Phys.: Conf. Ser.

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High temperature, fatigue, and impact are the main causes of internal cracks in revolved workpieces. Crack propagation assessment is an effective method to avoid fracture. Ultrasonic testing has been widely used when testing internal cracks in revolved workpieces. However, the existing ultrasonic detection equipment makes it difficult to detect revolved workpieces with complex structures. This paper proposes an automation system including six degrees of freedom (DOF) robot, ultrasonic transducer, and turntable. The system can realize non-destructive testing automatically for complex revolved workpieces. A new method is designed to measure and correct verticality error and eccentricity error. The method was applied to detect complex revolved workpieces and the detecting resolution can be effectively improved.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Robot-Assisted Ultrasonic Testing Technology for Complex Revolved Workpiece

Wang,

Zhang,

et al. 2024

J. Phys.: Conf. Ser.

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“…We need to detect the stress parts of metallic structures, or the position where cracks have occurred to ensure their safe and reliable operation. At present, common methods used in metallic crack detection and characterization include ultrasonic testing [8], eddy current testing [9], infrared thermal imaging [10], acoustic emission [11], and other nondestructive testing technologies. These nondestructive testing technologies have the disadvantages of complex system, expensive equipment, inconvenient installation and networking.…”

Section: Introductionmentioning

confidence: 99%

Passive Ultra High Frequency RFID sensor with reference tag for crack detection of aluminum alloy structure

Wang¹,

Dong²,

Wang³

et al. 2021

J. Inst.

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It can be ensured safe and reliable operation of a metallic structure by monitoring the positions which are easy to crack. Because the channel changes with the environment, a tag sensor in the ultra high frequency (UHF) is vulnerable to interference. This paper aims to investigate the reliability of passive RFID sensor systems with a reference tag for crack detection of aluminum alloy structures when the condition of reading distance and surrounding environment changes. The impedance and gain of tags are simulated, which provides theoretical basis for experimental analysis. With an increase of crack depth, the impedance of the sensor tag shifts to the low frequency direction, and the reference tag changes slightly. When dual tags are placed orthogonally, the gain of the sensor tag changes greatly, which means that it is more sensitive to crack depth. The backscatter power of the sensor tag shows a decline trend, and the power of the reference tag remains unchanged. The sensor features a linear response with the variation of crack depth. The sensitivity of crack characterization is better when dual tags are placed orthogonally.

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“…X-rays can detect product defects. Principe et al compared paired samples to ultrasonic testing (UT) and X-ray testing, where ultrasound revealed small defects misinterpreted by X-rays [3].…”

Section: Introductionmentioning

confidence: 99%

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

Zhang

Xiao

2018

Sensors

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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.

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Phased Array Ultrasonic Nondestructive Tests of Soldered Current-Carrying Bus-Bar Splices of Superconducting Magnets

Cited by 7 publications

References 4 publications

Robot-Assisted Ultrasonic Testing Technology for Complex Revolved Workpiece

Robot-Assisted Ultrasonic Testing Technology for Complex Revolved Workpiece

Passive Ultra High Frequency RFID sensor with reference tag for crack detection of aluminum alloy structure

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

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