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1-20 of 21
Keywords: imaging
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Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. May 2025, 8(2): 021006.
Paper No: NDE-23-1040
Published Online: September 30, 2024
... θ angles. Negative signals appear as light tones and positive signal as dark tones on these images. Representation of the vertical amplitude for synthetic CWS generated by 2 deg increments in the β=0 deg to 90 deg range for successive scans on a steel sample with four parallel notches at θ=0...
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. November 2024, 7(4): 041007.
Paper No: NDE-24-1023
Published Online: July 18, 2024
... with 40% loss of WT, (f) for pipe with 50% loss of WT, and (g) for pipe with 60% loss of WT Fig. 7 B-scan images obtained from sample CS pipes machined from ID surface for generation of WT loss ( a ) with 10 % loss of WT, ( b ) with 20% loss of WT, and ( c ) with 30% loss...
Journal Articles
Christian Hassenstein, Thomas Heckel, Ingimar Tomasson, Daniel Vöhringer, Torsten Berendt, Jonas Wassermann, Jens Prager
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. May 2024, 7(2): 021005.
Paper No: NDE-23-1031
Published Online: March 21, 2024
... introduce an automated nondestructive testing system that scans the part using an immersed ultrasonic array probe guided by a robot arm. For imaging, we adopt a two-step, surface-adaptive Total Focusing Method (TFM) approach. For each test position, the TFM allows us to identify the outer surface, followed...
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. November 2023, 6(4): 041005.
Paper No: NDE-22-1050
Published Online: October 4, 2023
...Felix H. Kim; Adam L. Pintar; John Henry J. Scott; Edward J. Garboczi A framework to generate simulated X-ray computed tomography (XCT) data of ground truth (denoted here as “GT”) flaws was developed for the evaluation of flaw detection algorithms using image comparison metrics. The flaws mimic...
Topics:
Algorithms,
Computerized tomography,
Errors,
Image segmentation,
Semantics,
Optimization,
Simulation,
Flaw detection
Includes: Supplementary data
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. May 2023, 6(2): 021007.
Paper No: NDE-22-1026
Published Online: May 17, 2023
... 07 2022 29 03 2023 29 03 2023 17 05 2023 imaging materials testing numerical analysis optics prognosis testing methodologies theoretical developments Strain localization refers to the process whereby an initially homogeneous distribution of deformation in a body...
Journal Articles
A.W.F. Volker, J.W. Vrolijk, E.J.W. Merks-Swolfs, D.W. van der Burg, M.S. van der Heiden, Q.E.V.N. Martina
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. November 2023, 6(4): 041002.
Paper No: NDE-22-1032
Published Online: March 2, 2023
... Wavefield Imaging to Non-Contact Ultrasonic Inspection of Bonded Components ,” AIP Conf. Proc. , 820 ( 1 ), pp. 1484 – 1491 . 10.1063/1.2184698 [7] Leong , W. H. , Staszewski , W. J. , Lee , B. C. , and Scarpa , F. , 2005 , “ Structural Health Monitoring Using Scanning Laser...
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. May 2023, 6(2): 021002.
Paper No: NDE-22-1010
Published Online: December 12, 2022
... the arrangement of knots in the resulting cut lumber. X-rays can image the interior of a log to detect the arrangement of the knots; however, traditional radiography measurements are two-dimensional in character and cannot provide the needed depth information. Conversely, computed tomography (CT) can provide...
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. February 2022, 5(1): 011002.
Paper No: NDE-20-1096
Published Online: June 7, 2021
... of defect types, our proposed novel MFL-based NDE methodology is witnessed to have operating characteristics within the acceptable threshold of PIG-based traditional methods and thus provide an extremely cost-effective, fast procedure with competing error rates. The image of the setup and its associated...
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. November 2021, 4(4): 041005.
Paper No: NDE-20-1080
Published Online: May 4, 2021
... in transmission and the same aperture is used for the reception in plane wave imaging (PWI). A new methodology called angle beam virtual source FMC-TFM (ABVSFMC-TFM) is proposed to inspect thick attenuating materials such as nickel-base alloys. The ABVSFMC method leads to improved signal-to-noise ratio (SNR...
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. August 2021, 4(3): 031001.
Paper No: NDE-20-1058
Published Online: February 3, 2021
... on a sparse grid of piezoelectric transducers for exciting and sensing GWs that under certain conditions interact with damage while propagating. In recent years, various defect imaging algorithms have been proposed for processing GWs signals and, particularly, for computing an image representing the integrity...
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. November 2020, 3(4): 041004.
Paper No: NDE-19-1065
Published Online: October 15, 2020
...Collin J. C. Epstein; Ryan N. Goodner; R. Derek West; Kyle R. Thompson; Amber L. Dagel X-ray phase contrast imaging (XPCI) is a nondestructive evaluation technique that enables high-contrast detection of low-attenuation materials that are largely transparent in traditional radiography. Extending...
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. May 2021, 4(2): 021004.
Paper No: NDE-20-1023
Published Online: October 14, 2020
...Wenfeng Xiao; Lingyu Yu This paper presents a non-contact air-coupled Lamb wave imaging technique using a two-dimensional (2D) cross-correlation method that not only detects the damage but also precisely quantifies for orientations and sizes. The air-coupled transducers (ACT) is used together...
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. November 2020, 3(4): 041002.
Paper No: NDE-19-1061
Published Online: August 28, 2020
... such as Despeckle, closing, dilate, and erosion was essential to study the physical properties for aggregates, EVA and piaçava fibers. Individual Objects Analysis and 2D Analysis Results were the functions used in the analysis. Reconstruction of images was performed with the software InstaRecon ®...
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. February 2021, 4(1): 011004.
Paper No: NDE-20-1011
Published Online: June 25, 2020
... are an excellent solution for field test measurement and imaging of material damage. This study explores the use of NLU metrics based on ratios of harmonic amplitudes and frequencies to map the buildup of damage precursors, such as crystal dislocations, under cyclic loading within the microstructure of fatigued...
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. February 2021, 4(1): 011003.
Paper No: NDE-19-1084
Published Online: June 8, 2020
... from interfaces are used as inputs for a newly developed imaging algorithm. The proposed method has the potential to be a reference-free and fully automated method. References [1] Akinade , O. O. , Oyedele , L. O. , Bilal , M. , Ajayi , S. O. , Owolabi , H. A. , Alaka , H...
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. November 2020, 3(4): 041103.
Paper No: NDE-19-1064
Published Online: May 27, 2020
... to mitigate the very low-intensity throughput and achieve acceptable scan image results will be discussed. Image processing (IP) methods used to segment porosity features in the FeMnAl blocks will also be discussed. Email: william.h.green1.civ@mail.mil Email: bryan.a.cheeseman.civ@mail.mil Email...
Journal Articles
Xin Li, Aaron Dentinger, Michelle Brault, William R. Ross, Mark Osterlitz, Lin Fu, Mingye Wu, J. Scott Price, Bruno De Man, Clifford Bueno, Paul Fitzgerald
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. August 2020, 3(3): 031101.
Paper No: NDE-19-1049
Published Online: April 8, 2020
..., it is important to assess how well the required inspection and measurement tasks can be performed. Furthermore, it can be very informative to quantify image quality (IQ) metrics that can provide insight into the IQ characteristics that lead to the resulting inspection or measurement task performance. Inspection...
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. August 2020, 3(3): 031106.
Paper No: NDE-19-1068
Published Online: April 8, 2020
... and imaging. The defect echo and grain noise are distinguished through analyzing the spatial location where the echo is originating from. This is achieved by estimation of the angle of arrival (AOA) of the returned echo and evaluation of the likelihood that the echo is reflected from the point where the array...
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. February 2020, 3(1): 011002.
Paper No: NDE-19-1015
Published Online: October 15, 2019
... classification diagnostic feature extraction eddy current imaging materials testing mechanical engineering prognosis sensors ultrasonics Carbon fiber reinforced polymer (CFRP) composites are of extreme interest in the aerospace and automotive industries due to their light weight and high...
Journal Articles
Publisher: ASME
Article Type: Research Papers
ASME J Nondestructive Evaluation. February 2020, 3(1): 011001.
Paper No: NDE-18-1040
Published Online: October 15, 2019
... for the quantification of complex defect using topographic primal sketch (TPS) in magnetic flux leakage (MFL) testing. This method uses four excitation patterns so as to obtain MFL images from experiment; a mean image is then produced, assuming it has 80–90% the properties of all four images. A gradient manipulation...
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