Results 251 to 260 of about 977,147 (296)

Advanced Photoacoustic Imaging Using Full Matrix Capture Data Acquisition

2015
Full Matrix Capture (FMC), when used with the Total Focusing Method (TFM), may offer an improvement on the Synthetic Aperture Focusing Technique (SAFT) algorithm. FMC is a data acquisition process which captures A-scan (time-amplitude) data for every transmitterreceiver combination of elements in an array.
Knight-Gregson, Benjamin, Mosey, Stephen, Weston, Miles, Scully, Patricia, Peyton, Anthony, Davis, Claire   +5 more
openaire   +2 more sources

Evaluation of material degradation using phased array ultrasonic technique with full matrix capture

Engineering Failure Analysis, 2021
Abstract This paper presents a new approach based on phased array ultrasonic technique (PAUT) with full matrix capture (FMC) to effectively measure acoustic properties such as ultrasonic wave velocity and attenuation coefficient and to evaluate material degradation.
Santhakumar Sampath, R. Dhayalan, Anish Kumar, N.N. Kishore, Hoon Sohn   +4 more
openaire   +1 more source

Multi-frequency time-reversal-based imaging for ultrasonic nondestructive evaluation using full matrix capture

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2014
In this paper, two multi-frequency time-reversal (TR)-based imaging algorithms are explored for application to the nondestructive evaluation (NDE) imaging of defects in solids: time reversal with multiple signal classification (TRMUSIC) and a related phase-coherent form (PC-MUSIC).
Fan, Chengguang, Pan, Mengchun, Luo, Feilu, Drinkwater, Bruce   +3 more
openaire   +3 more sources

Phase Shift Migration Approach Using Full Matrix Capture Optimization for Multi-Layer Ultrasonic Imaging

Volume 7: Seismic Engineering; ASME Nondestructive Evaluation, Diagnosis and Prognosis (NDPD) Division, 2023
Abstract Ultrasonic phased array testing is a widely used nondestructive testing method seen in regular inspection of pressure vessels and pressure pipelines. However, some complex structures of multiple layers give rise to impracticality of existing imaging techniques on accurately evaluating the size and shape of defects within inner ...
Jingwei Cheng, Zhichao Fan, Xuedong Chen, Xiangting Xu, Yangguang Bu, Haibin Wang, Zhe Wang   +6 more
openaire   +1 more source

Study on the railway wheel ultrasonic inspection method using the full matrix capture

2013 Far East Forum on Nondestructive Evaluation/Testing: New Technology and Application, 2013
The quality of wheel is especially important for the safety of high speed railway. In this paper, a new ultrasonic array inspection method, the Full Matrix Capture (FMC) and Total Focus Method (TFM) algorithm, has been studied and applied to the high speed railway wheel inspection, especially in the wheel web from the tread.
Jianping Peng, Hua Peng, Yu Zhang, Xiaorong Gao, Chaoyong Peng, Zeyong Wang   +5 more
openaire   +1 more source

Phased array ultrasonic imaging using angle beam virtual source full matrix capture-total focusing method

NDT & E International, 2020
Abstract Full matrix capture coupled with total focusing method (FMC-TFM) is one of the most advanced and popular phased array ultrasonic techniques used to achieve simultaneous focusing at all depths in a specimen. In case of conventional FMC-TFM technique, a single element is used for transmission that limits the transmitted energy.
null Sumana, Anish Kumar
openaire   +1 more source

ULTRASONIC PHASED ARRAY INSPECTION OF FLAWS ON WELD FUSION FACES USING FULL MATRIX CAPTURE

AIP Conference Proceedings, 2009
Work is being conducted to develop phased array inspection of stainless steel welded pipes. Ideally this uses waves reflected and mode converted at the inner surface of the pipe, but most commercial phased array controllers do not currently provide for this. Our solution was to use Full Matrix Capture (FMC) and process the data ourselves.
R. Long, J. Russell, P. Cawley, N. Habgood, Donald O. Thompson, Dale E. Chimenti   +5 more
openaire   +1 more source

Machine Learning in stress corrosion crack characterisation from full matrix capture ultrasonic signal

2023
How can we monitor the growth of stress corrosion cracks (SCC) in an automated way through ultrasonic inspection? With breakthroughs in machine learning society and availability of full inspection sensor data, automated structure health monitoring with integrated machine learning models to determine current state of structure has seen growing focus ...
openaire   +1 more source

Laser ultrasonic frequency-domain imaging and phase weighted optimization based on full matrix capture

Ultrasonics
Far-field laser technology has greatly promoted the progress of nondestructive ultrasonic imaging of bulk structures. However, under thermoelastic excitation, the body waves exhibit a relatively low signal-to-noise ratio, resulting in images with low resolution and contrast.
Zenghua Liu, Long Chen, Yanping Zhu, Xiaoyu Liu, Zhaojing Lu, Cunfu He   +5 more
openaire   +2 more sources

Full Matrix Capture and Total Focusing Method: The Next Evolution in Ultrasonic Testing

NDT World, 2019
Full matrix capture and the total focusing method are considered by many NDT experts to be the next major improvement to phased array ultrasonic testing. This article showcases some advantages the new techniques offer compared to the capabilities of traditional ultrasonic phased array.
openaire   +1 more source