Three-dimensional flaw reconstruction using a real-time X-ray imaging system

Doering, E.

doi:10.31274/rtd-180813-11267

Cited by 9 publications

(15 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…X-ray stereography uses information from two two-dimensional projections to determine the three-dimensional location of features within an object (Doering, 1992;Jensen and Gray, 2004). An extension of stereographic imaging is X-ray particle tracking velocimetry (XPTV), where two X-ray sources track X-ray absorbent particles via point mapping (Seeger et al, 2003;Kertzscher et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

X-ray computed tomography in large bubble columns

Hubers

Striegel

Heindel

et al. 2005

Chemical Engineering Science

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

X-ray computed tomography in large bubble columns

Hubers

Striegel

Heindel

et al. 2005

Chemical Engineering Science

View full text Add to dashboard Cite

“…Stereographic measurement methods use information from two 2D projections to calculate the 3D location of features in an object [124]. This can be accomplished by analyzing two images of an object which are taken at different positions either due to a rotation or translation of the sample.…”

Section: X-ray Stereographymentioning

confidence: 99%

“…Although not required, accuracy of the coordinate determination can be increased through the use of markers at known locations in the object of interest. For example, Doering [124] used markers and was able to measure points in several small static samples with an accuracy of 0.1 mm. Jensen and Gray [125] also used markers to visualize molten aluminum flow in lost foam castings.…”

Section: X-ray Stereographymentioning

confidence: 99%

A Review of X-Ray Flow Visualization With Applications to Multiphase Flows

Heindel

2011

Journal of Fluids Engineering

180

134

View full text Add to dashboard Cite

Flow visualization and characterization of multiphase flows have been the quest of many fluid mechanicians. The process is fairly straight forward only when there is good optical access (i.e., the vessel is not opaque or there are appropriate viewing ports) and the flow is transparent, implying a very low volume fraction of the dispersed phase; however, when optical access is not good or the fluid is opaque, alternative methods must be developed. Several different noninvasive visualization tools have been developed to provide high-quality qualitative and quantitative data of various multiphase flow characteristics, and overviews of these methods have appeared in the literature. X-ray imaging is one family of noninvasive measurement techniques used extensively for product testing and evaluation of static objects with complex structures. X-rays can also be used to visualize and characterize multiphase flows. This paper provides a review of the current status of X-ray flow visualization and details various X-ray flow visualization methods that can provide qualitative and quantitative information about the characteristics of complex multiphase flows. Flow visualization and characterization of multiphase flows have been the quest of many fluid mechanicians. The process is fairly straight forward only when there is good optical access (i.e., the vessel is not opaque or there are appropriate viewing ports) and the flow is transparent, implying a very low volume fraction of the dispersed phase; however, when optical access is not good or the fluid is opaque, alternative methods must be developed. Several different noninvasive visualization tools have been developed to provide high-quality qualitative and quantitative data of various multiphase flow characteristics, and overviews of these methods have appeared in the literature. X-ray imaging is one family of noninvasive measurement techniques used extensively for product testing and evaluation of static objects with complex structures. X-rays can also be used to visualize and characterize multiphase flows. This paper provides a review of the current status of X-ray flow visualization and details various X-ray flow visualization methods that can provide qualitative and quantitative information about the characteristics of complex multiphase flows.

show abstract

“…Stereographic measurement methods use information from t\\iO 2-dimensional projections to calculate the 3-dimensional location of features in an object [43]. This can be accomplished by analyzing two images of an object which are taken at different positions either due to a rotation or translation of the sample.…”

Section: X-ray Flow Visualization Capabilitiesmentioning

confidence: 99%

“…Although not required, accuracy of the coordinate determination can be increased through the use of markers at known locations in the object of interest. For example, Doering [43] used markers and was able to measure points in several small static samples with an accuracy of 0.1 mm with only two X-ray projections. Further work is needed to extract more quantitative information from stereographic sequences such as these.…”

Section: X-ray Stereography Imagingmentioning

confidence: 99%

Visualizing Fluid Flows With X-Rays

Heindel

Jensen

Gray

2007

Volume 1: Symposia, Parts a and B

View full text Add to dashboard Cite

There are several methods available to visualize fluid flows when one has optical access. However, when optical access is limited to near the boundaries or not available at all, alternative visualization methods are required. This paper will describe flow visualization using an X-ray system that is capable of digital X-ray radiography, digital X-ray stereography, and digital X-ray computed tomography (CT). The unique X-ray flow visualization facility will be briefly described, and then flow visualization of various systems will be shown. Radiographs provide a two-dimensional density map of a three dimensional process or object. Radiographic images of various multiphase flows will be presented. When two X-ray sources and detectors simultaneously acquire images of the same process or object from different orientations, stereographic imaging can be completed; this type of imaging will be demonstrated by trickling water through packed columns and by absorbing water in a porous medium. Finally, local time-averaged phase distributions can be determined from X-ray computed tomography (CT) imaging, and this will be shown by comparing CT images from two different gas-liquid sparged columns.

show abstract

Three-dimensional flaw reconstruction using a real-time X-ray imaging system

Cited by 9 publications

References 43 publications

X-ray computed tomography in large bubble columns

X-ray computed tomography in large bubble columns

A Review of X-Ray Flow Visualization With Applications to Multiphase Flows

Visualizing Fluid Flows With X-Rays

Contact Info

Product

Resources

About