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eddy current inspection model

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Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006443
EISBN: 978-1-62708-190-0
.... It describes the NDE engineering and NDE process control, along with some case studies related to the applications of NDE. The article reviews various models for predicting NDE reliability, such as ultrasonic inspection model, eddy current inspection model, and radiographic inspection model. It...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006449
EISBN: 978-1-62708-190-0
... nondestructive examination modeling and simulation methods eddy-current methods magnetic methods acoustic methods physical methods in-service inspection welds austenitic stainless steel tubing TUBULAR PRODUCTS, ranging in size from hypodermic needle tubing to large-diameter oil-line pipe, are used in...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005863
EISBN: 978-1-62708-167-2
... quantitative estimation of this phenomenon due to limited computer modeling capabilities. Also, it was not possible to measure the power/current density distribution inside the solid body during the heating cycle. The first publication that provides the results of the research studies with a quantitative...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006465
EISBN: 978-1-62708-190-0
... interest in real-time process monitoring and characterization for additive processes. The inspection methods required are necessarily nondestructive, rapid, and quantitative. The development of real-time in situ characterization methods can also serve as valuable feedback for process models, process...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005341
EISBN: 978-1-62708-187-0
... Abstract The commonly used nondestructive testing of cast products include liquid penetrant inspection, radiographic inspection, fluoroscopic inspection and automated defect recognition, ultrasonic inspection, eddy current inspection, process-controlled resonant testing (PCRT), leak test, and...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006447
EISBN: 978-1-62708-190-0
... automated optical inspection (AOI) systems. These systems are based on high-definition cameras and smart software with special algorithms that process the captured image and use various comparative techniques and models to detect and classify various types of anomalies. If findings such as, but not...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004215
EISBN: 978-1-62708-184-9
...). Where possible, the inspection personnel should have been tested and qualified on a test piece that realistically models the items to be inspected in service, with regard to access, orientation, and type of defect. The inspection function should be independent of normal maintenance functions to...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
... detecting surface discontinuities by magnetic-particle inspection, liquid penetrant inspection, and eddy-current testing. The major NDE methods for internal (volumetric) inspection in failure analysis also are described. eddy-current testing liquid penetrant inspection magnetic-particle inspection...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006457
EISBN: 978-1-62708-190-0
... inspection of thin metal laminations and metal-to-honeycomb bonded structures. The instrument uses a coil that electromagnetically vibrates the metal face sheet. This coil induces a pulsed eddy-current flow in a conductive material by an oscillating electromagnetic field in the probe. The alternating eddy...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006445
EISBN: 978-1-62708-190-0
.../camera Image analysis of 3-D volumetric model/image comparison Volume Mostly not possible If inclusion changes total absorption >0.5% More detailed than x-ray. Flaw must cause measurable difference in absorption (>0.5%); no cracks, only volumetric flaws Eddy current local Eddy current in...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002387
EISBN: 978-1-62708-193-1
... from hydrogen, carburization, and strain aging can be difficult to determine. Nonetheless, useful nondestructive methods ( Table 2 ) include not only conventional methods such as ultrasound, radiography, magnetic particles, and dye penetrants, but also eddy current testing, capacitive strain gage...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003436
EISBN: 978-1-62708-195-5
... layers and evaluate the nature of the interface. Another aspect of ultrasonic spectroscopy is the phenomenon of resonance. Resonance is the result of constructive and destructive interference of standing waves in an ultrasonic medium that can be locally modeled as a plate. Positive interference happens...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005616
EISBN: 978-1-62708-174-0
... compared to conventional scanning techniques. Model-based algorithms can be developed to use eddy current signal amplitude and phase information to plot the array data in terms of the material electrical conductivity. The conductivity data collected with an array technique have been used to correlate the...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006477
EISBN: 978-1-62708-190-0
... techniques. Model-based algorithms can be developed to use eddy-current signal amplitude and phase information to plot the array data in terms of the material electrical conductivity. The conductivity data collected with an array technique have been used to correlate the eddy-current measurement results with...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006478
EISBN: 978-1-62708-190-0
... spectroscopy is the phenomenon of resonance. Resonance is the result of constructive and destructive interference of standing waves in an ultrasonic medium that can be locally modeled as a plate. Positive interference happens when an integral number of half-wavelengths occur in the medium, which will happen...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0009152
EISBN: 978-1-62708-186-3
... phase is followed by a validation phase to verify the correlation model. Figure 22(a) shows a comparison between the values of yield strength obtained from tensile tests and that obtained through eddy current tests for ETG-100 steel. This shows a 1% error band within the correlation model in the...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006289
EISBN: 978-1-62708-169-6
... in conductivity with aging, the activation energy for this process was calculated. It corresponded with the formation of coherent zones in the aluminum alloy. The behavior of the eddy-current conductivity at low-temperature isothermal aging is consistent with the model of continual formation of...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004114
EISBN: 978-1-62708-184-9
... include determination of cathodic protection current by casing polarization test and CPP test or by mathematical models; calculation of casing-to-anode separation; isolation of the casing from other facilities; consideration of stray current interference from other dc power sources; and determination of...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006463
EISBN: 978-1-62708-190-0
... options available for estimating POD from experimental data. The results shown are from the MIL-HDBK-1823 software, using the a ^ -versus- a model with a log-log transform and a decision threshold of 40% full screen height (FSH). The inspection results are plotted as hits or misses, using a...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006438
EISBN: 978-1-62708-190-0
... representative and worst-case flaws. Frequently, the justification that the target volume is covered and that the representative flaws envelop the flaws of concern throughout the area of interest is addressed by physics-based models of the part and the interaction of the inspection technique with that part. In...