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real-time radiography

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Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006459
EISBN: 978-1-62708-190-0
... Abstract Digital radiography is a technique that uses digital detector arrays (linear or area) to capture an X-ray photonic signal and convert it to an electronic signal for display on a computer. This article begins with an overview of real-time radiography and provides a schematic...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006456
EISBN: 978-1-62708-190-0
... performance characteristics for film radiography, real-time radiography, and X-ray computed tomography is presented in a table. A functional block diagram of a typical computed tomography system is provided. The article discusses CT scanning geometry that is used to acquire the necessary transmission data. It...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003238
EISBN: 978-1-62708-199-3
... types of media provide the images for subsequent observation. Radiography can also utilize radiographic screens, which are pressed into intimate contact with the imaging medium. Radiographic screens include: Metallic screens placed over film, paper, or the screens used in real-time systems...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006448
EISBN: 978-1-62708-190-0
... recording medium (usually film), a real-time imaging medium (such as fluorescent screens or scintillation crystals), computed radiography, digital radiography, or computed tomography. The imaging process can also be assisted with the use of intensifying or filtration screens, which intensify the conversion...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006455
EISBN: 978-1-62708-190-0
... Abstract Film radiography requires the development of the exposed film so that the latent image becomes visible for viewing. It describes the general characteristics of film, including speed, gradient, and graininess, and the factors affecting film selection and exposure time. The article...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005218
EISBN: 978-1-62708-187-0
... those of light optical video microscopy. In general, there are three distinct viable imaging techniques made available by SR for the real-time investigation of solidification microstructures in alloys: two-dimensional x-ray topography, two-dimensional x-ray radiography, and ultrafast three-dimensional x...
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
... assemblies are inspected immediately after the adhesive cure cycle, after the parts have been cleaned and removed from the manufacturing jigs or fixtures. The next important time for inspection is after the assemblies have been in use and the condition of the parts is known. It is necessary to determine if...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005522
EISBN: 978-1-62708-197-9
... low-gravity platforms and facilities for solidification processing. It provides a description of dendritic growth studies and electromagnetic levitation. The article concludes with information on the in situ and real-time monitoring of solidification processing. casting metals and alloys...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004214
EISBN: 978-1-62708-184-9
... pipelines. The article reviews methodologies to perform internal corrosion direct assessment for pipelines. Real-time monitoring techniques for assessing actual corrosion at critical locations are discussed. The article also presents the case studies for multi-technique electrochemical corrosion monitoring...
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
... showing a long wormhole defect along the advancing side of the weld. Courtesy of GE Because the size of flaws in diffusion bonding is determined by the scale of roughness and contaminations of the surfaces being bonded, both flatness and cleanliness influence the bond quality. Real-time radiography...
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
... advancing side of the weld. Courtesy of GE Because the size of flaws in diffusion bonding is determined by the scale of roughness and contaminations of the surfaces being bonded, both flatness and cleanliness influence the bond quality. Real-time radiography, coupled with a microfocus x-ray source and...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006452
EISBN: 978-1-62708-190-0
... mechanical movement of a monolithic transducer. Images are easier to interpret intuitively than A-scans, and the ability to output cross-sectional images of a component in near real-time is a contributory factor in the rise of array transducers over monolithic devices, particularly in medical imaging. By...
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
... , Process Control and Sensors for Manufacturing , SPIE Vol 3399 , Bossi R. and Pepper D. , Ed., 1998 , p 180 – 187 56. Gilbolom D. , Colbeth R. , Batts M. , and Meyer B. , Real-Time X-Ray Imaging with Flat Panels , Process Control and Sensors for Manufacturing...
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
... 3399, Bossi R. and Pepper D. , Ed., 1998 , p 180 – 187 56. Gilbolom D. , Colbeth R. , Batts M. , and Meyer B. , Real-Time X-Ray Imaging with Flat Panels , Process Control and Sensors for Manufacturing , SPIE Vol 3399, Bossi R. and Pepper D. , Ed...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003463
EISBN: 978-1-62708-195-5
... real time—by continuously monitoring the composite during service (or testing in the laboratory)— or at selected service intervals by removing the composite from the load environment to perform the tests. Nondestructive testing is also performed on components after failure, but just prior to...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002363
EISBN: 978-1-62708-193-1
... technique, heat is applied to the material and the subsequent heat flow is observed over a period of time. The infrared technique has the following features: Functions in real-time, is nondestructive, and can be used for remote measurements. Huang et al. ( Ref 63 ) used an infrared-sensing method for...
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
..., laser tracker, coordinate measurement machines Either angle/angle stereo image or angle/time-of-flight allows measurement of surface profile of the object. Reverse engineering, dimensional metrology, crack and pit detection Limited to visible surfaces Intuitive; can be applied over wide scale from...
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
... and the time in between them, one can get a fair idea of the presence of a defect in the cross section as well as its location relative to the thickness of the component being tested. As shown in Fig. 2 , the two large peaks correspond to the reflection off of the front wall (top of section) and back...
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
... detected. Historically, x-ray detection of flaws has been an expensive and cumbersome process suited only to safety-critical and high added-value parts. Real-time imaging techniques have considerably improved the process and made possible rapid testing and immediate acceptance or rejection of parts. Real...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003431
EISBN: 978-1-62708-195-5
... surface contouring. This technology is integrated with numerical-controlled equipment to make tools much faster than conventional methods, as well as real-time inspection capability. Process operators are becoming the “process owners,” because they provide source-controlled quality based on real-time...