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Ultrasonic total focusing method for internal defects in composite insulators
Insight - Non-Destructive Testing and Condition MonitoringIn order to address the problem of poor imaging detection of internal defects caused by the multi-layer curved surface structure and strongly attenuating material of composite insulators, the total focusing method (TFM) with two-layer curved surface correction was investigated.
Hongwei Hu +4 more
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Real-Time Total Focusing Method for Ultrasonic Imaging of Multilayered Object
2018 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2018In imaging of multilayered object, total focusing method (TFM) combined with ray-tracing appeals to numerous researchers because of its superior image quality. But lots of iterative computation to calculate the incident points greatly increases its processing time.
Wenkai Cui, Kaihuai Qin
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Phased-Array Laser Ultrasonic Testing with Sparse Total Focusing Imaging Method
2019 Far East NDT New Technology & Application Forum (FENDT), 2019In order to further improve the detectability of laser ultrasonic testing method for internal defects of materials, this paper studies a new phased array laser ultrasonic detection and imaging method based on the full matrix capture technology and total focusing method.
Xing Kou +3 more
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Dijkstra’s algorithm-based ray tracing method for total focusing method imaging of CFRP laminates
Composite Structures, 2019Abstract Accurate determination of ultrasonic travel time from a start point to an end point with known positions is fundamental to the application of total focusing method (TFM) to ultrasonic array imaging. However, this is particularly challenging for CFRP laminates whose wave propagation is complex due to material anisotropy and refractive ply ...
Li Lin, Huanqing Cao, Zhongbing Luo
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Total Focusing Method With Virtual Sources in the Presence of Unknown Geometry Interfaces
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2016Auto-focused virtual source imaging (AVSI) has been recently presented as an alternative method for synthetic aperture focusing through arbitrarily shaped interfaces with arrays. This paper extends the AVSI concept to the case of the total focusing method (TFM-AVSI) using several virtual receivers for each virtual source.
Jorge F. Cruza, Jorge Camacho
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The post-processing of ultrasonic array data using the total focusing method
Insight - Non-Destructive Testing and Condition Monitoring, 2004The use of ultrasonic arrays for NDT has increased significantly in recent years. This is due to the flexibility of array systems which can be electronically configured to produce plane, focused, steered and steer-focusedbeams. In this way, one array transducer can do the job of many standard single-element transducers.
Holmes, C, Drinkwater, BW, Wilcox, PD
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A multi-FPGA implementation of real-time reconstruction using Total Focusing Method
2013 IEEE International Conference on Cyber Technology in Automation, Control and Intelligent Systems, 2013Total Focusing Method (TFM) ultrasound imaging has many advantages in terms of flexibility and accuracy in comparison with traditional imaging techniques. However, one major drawback is the high number of data acquisition and computing requirements for this imaging technique.
Njiki, Mickael +4 more
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Implementation of total focusing method for phased array ultrasonic imaging on FPGA
SPIE Proceedings, 2015This paper describes a multi-FPGA imaging system dedicated for the real-time imaging using the Total Focusing Method (TFM) and Full Matrix Capture (FMC). The system was entirely described using Verilog HDL language and implemented on Altera Stratix IV GX FPGA development board.
JianQiang Guo +4 more
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Total focusing method applied to probability of detection
The International Journal of Advanced Manufacturing Technology, 2023Mohammad Ebrahim Bajgholi +4 more
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Fast Imaging Method of Total Focusing Method in Nozzle Weld Inspection
2023 IEEE Far East NDT New Technology & Application Forum (FENDT), 2023Qian Xu, Hai-Tao Wang
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