Field Test Performance of Noncontact Ultrasonic Rail Inspection System

Mariani, Stefano; Nguyen, Thompson V.; Zhu, Xuan; Scalea, Francesco Lanza di

doi:10.1061/jtepbs.0000026

Cited by 28 publications

(28 citation statements)

References 11 publications

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“…For practical engineering inspections, detection of multiple defects is of particular interest, for example, welding inspection of a pipeline ( 52 ) and rail track detection under shelling ( 53 ). The stretchable ultrasonic device was used for 3D internal structure visualization by imaging two defects with different depths and orientations under a sinusoidal curved surface.…”

Section: Resultsmentioning

confidence: 99%

Stretchable ultrasonic transducer arrays for three-dimensional imaging on complex surfaces

et al. 2018

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Section: Resultsmentioning

confidence: 99%

Stretchable ultrasonic transducer arrays for three-dimensional imaging on complex surfaces

et al. 2018

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“…Gaal et al [151] developed an ultra-low noise pre-amplifier for air-coupled ultrasonic receiver with an output impedance of 1 to 10 MΩ an extremely high input impedance of 100 MΩ // 10 pF (See Figure 17). Noting the high voltage levels of amplifier close to the breakdown of the exciter, Mariani et al [13] used PSpice software to design L type networks based EIMN for the receiver side. The resistor-inductor-capacitor (RLC) configuration at 170 kHz was found to yield the best SNR for air-coupled receiver.…”

Section: Nondestructive Evaluation Of Composite and Sandwich Structuresmentioning

confidence: 99%

“…The reason being the less importance of energy efficiency and other less stringent requirements of signal waveform, space and criticality of application. The devices for applications like biomedical imaging [6][7][8], acoustic emission [9,10], condition monitoring [11,12], nondestructive evaluation (NDE) [13][14][15][16][17], and structural health monitoring (SHM) [18][19][20][21][22] are to be designed considering the performance as a whole system due to the criticality of the tasks they perform like damage or defect detection. The system here includes the sensors or actuators, driving electronics and the target object.…”

Section: Introductionmentioning

confidence: 99%

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A Review of Electric Impedance Matching Techniques for Piezoelectric Sensors, Actuators and Transducers

Rathod

2019

Electronics

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Any electric transmission lines involving the transfer of power or electric signal requires the matching of electric parameters with the driver, source, cable, or the receiver electronics. Proceeding with the design of electric impedance matching circuit for piezoelectric sensors, actuators, and transducers require careful consideration of the frequencies of operation, transmitter or receiver impedance, power supply or driver impedance and the impedance of the receiver electronics. This paper reviews the techniques available for matching the electric impedance of piezoelectric sensors, actuators, and transducers with their accessories like amplifiers, cables, power supply, receiver electronics and power storage. The techniques related to the design of power supply, preamplifier, cable, matching circuits for electric impedance matching with sensors, actuators, and transducers have been presented. The paper begins with the common tools, models, and material properties used for the design of electric impedance matching. Common analytical and numerical methods used to develop electric impedance matching networks have been reviewed. The role and importance of electrical impedance matching on the overall performance of the transducer system have been emphasized throughout. The paper reviews the common methods and new methods reported for electrical impedance matching for specific applications. The paper concludes with special applications and future perspectives considering the recent advancements in materials and electronics.

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“…Since there are many different kinds of inspection targets, many different kinds of methods are used in automatic and noncontact measurement systems. For example, rail internal cracks can detected by ultrasonic techniques [1][2][3], eddy current testing methods have been proposed to confirm railroad damage [4,5], and acoustic emissions and signal processing techniques have also been used in rail inspection [6]. In addition to all of those, visual inspection systems (VISs) are used more widely, including to detect track surface defects [7,8], fasteners [9][10][11], bolts [12], slabs [13], squats [14], and catenary geometry parameters and units [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Change Detection: The Framework of Visual Inspection System for Railway Plug Defects

Cheng

2020

IEEE Access

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Railway plug defects impact the safety of a railway system. To detect railway plug defects, we establish the framework of a visual inspection system (VIS), which is the first system that can perform railway plug inspection automatically and intelligently. Using the idea of change detection, the framework includes three algorithm modules, which are named the object location, image alignment and similarity measurement modules. After the image acquisition system captures a rail image as the input, the three algorithm modules process the image in order. First, in the object location module, a deep convolutional neural network is used to perform plug location. Second, in the image alignment module, a simple and fast method is designed to align key images using histogram of oriented gradients features. Third, in the similarity measurement module, the χ2 distance is used to compute the similarity between the two plug regions in an inspection image and in an aligned ground-truth image. The results of the similarity measurement are sorted when all inspection images are processed. Therefore, the inspection images with smaller similarity values are ranked higher and the plugs in the images have larger probabilities of defects. The framework has passed the practice tests, and the visual inspection system using this framework has already been authorized by the China Railway Corporation and will be equipped in many inspection trains belonging to local railway corporations.

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Field Test Performance of Noncontact Ultrasonic Rail Inspection System

Cited by 28 publications

References 11 publications

Stretchable ultrasonic transducer arrays for three-dimensional imaging on complex surfaces

Stretchable ultrasonic transducer arrays for three-dimensional imaging on complex surfaces

A Review of Electric Impedance Matching Techniques for Piezoelectric Sensors, Actuators and Transducers

Change Detection: The Framework of Visual Inspection System for Railway Plug Defects

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