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Keywords: x-rays
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eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2005
ISBN-10: 0-8031-3494-0
ISBN: 978-0-8031-3494-2
... A monochromatic wavelength dispersive X-ray fluorescence (MWDXRF) technique has been successfully developed for measuring low-level sulfur in fuel. In this technique, two doubly curved crystal (DCC) optics were used to provide monochromatic excitation and fixed channel wavelength dispersive...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 2003
ISBN-10: 0-8031-3459-2
ISBN: 978-0-8031-3459-1
... breakdown potential radiopacity x-rays Bernard S. Covino, Jr, 1Charles H. Craig,2 Stephen D. Cramer,3Sophie J. Bullard, I Margaret Ziomek-Moroz,1Paul D. Jablonski,4 Paul C. Turner,4 Herbert R. Radisch, Jr.,2Nev A. Gokcen,s Clifford M. Friend,6 and Michael R. Edwards6 Corrosion Behavior of Platinum...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1993
ISBN-10: 0-8031-1484-2
ISBN: 978-0-8031-1484-5
... ASTM Subcommittee E4.06 on X-ray Metallography was organized in 1925, nine years after Committee E4 itself was formed. The first standard on radiography was published the next year, 30 years after the discovery of X-rays. In 1938, Hanawalt et al. developed their method of identifying compounds...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1992
ISBN-10: 0-8031-1472-9
ISBN: 978-0-8031-1472-2
... When the film used in a photographer's camera fails to yield the results intended, it is frequently suspected that the cause may be X-rays encountered during security screening at airport boarding gates or other locations where similar luggage or container inspection is used. while it is true...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1992
ISBN-10: 0-8031-1472-9
ISBN: 978-0-8031-1472-2
... in-house funded research program, American Science and Engineering, Inc. (AS&E) has developed a completely new technique for X-ray imaging called backscatter imaging. The scatter image differs from the standard image in two important ways. First, the contrast for explosives in an image is dramatically...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1988
ISBN-10: 0-8031-4477-6
ISBN: 978-0-8031-4477-4
... fused silica multiple pulse damage x-rays Manuscript Received 12-22-86 An Investigation of the P o s s i b i l i t y that Laser-lnduced Color Centers are Responsible for Multiple Pulse Damage Dimitrios K i t r i o t i s and Larry D. Merkle Physics Department University of Arkansas Fayetteville, AR...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1986
ISBN-10: 0-8031-0447-2
ISBN: 978-0-8031-0447-1
... to an understanding of validity of average stress failure criterion and probable causes of difference between the predicted and experimental values. delamination composite materials interlaminar shear failure edge effect stress analysis Global-local model photomicrographs X-rays static tension static...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1985
ISBN-10: 0-8031-0468-5
ISBN: 978-0-8031-0468-6
... Normalized reinforced specimens were placed in 3.5% circulating sodium chloride (NaCl) solution (25°C) under a +850-mV anodic charge. At several time intervals on all of these specimens X-ray radiographies were taken focused on the rebars and on the concrete, and the specimens were placed again...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1980
ISBN-10: 0-8031-0546-0
ISBN: 978-0-8031-0546-1
... Most radiologic imaging utilizes a phosphor as the primary X-ray absorber. The absorption of the X-ray, subsequent X-ray fluorescence and Auger relaxation, and the diffusion and scattering of secondary electrons influence the effective X-ray absorption and the picture noise. Scattering...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1977
ISBN-10: 0-8031-0196-1
ISBN: 978-0-8031-0196-8
... radiation radiography gamma rays X-rays E. H. Eisenhower^ Calibration of Radiation Sources for Radiography REFERENCE: Eisenhower, E. H., "Calibration of Radiation Sources for Radiography," Nondestructive Testing Standards A Review, ASTM STP 624, Harold Berger, Ed., American Society for Testing...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1973
ISBN-10: 0-8031-0561-4
ISBN: 978-0-8031-0561-4
... of the solids in a continuous sample of flowing slurry is monitored by X-ray emission techniques. The chemical composition is used by a raw mill blending and control program to adjust feed rates of the raw material streams entering the raw grinding mill. A more uniform product in terms of certain chemical...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1972
ISBN-10: 0-8031-4486-5
ISBN: 978-0-8031-4486-6
... electron guns—lanthanum hexaboride and field emission—is explained. The experimental problems associated with the measurement of X-ray intensity ratios in EPA are explained. A complete example of quantitative analysis in a ternary system is fully worked out and an entire section is devoted to the initial...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1971
ISBN-10: 0-8031-0070-1
ISBN: 978-0-8031-0070-1
... This paper reviews the present state of development and application of X-ray emission spectrometry using radioisotope X-ray and gamma ray sources for excitation, and energy discrimination and dispersion techniques for spectrum analysis. The design and use of instrumentation is characterized...
eBook Chapter
Series: ASTM Selected Technical Papers
Publisher: ASTM International
Published: 1968
ISBN-10: 0-8031-6181-6
ISBN: 978-0-8031-6181-8
... phase identification vacuum deposition X-rays R. J. Gray 1 The Present Status of Metallography* REFERENCE: R. J. Gray, "The Present Status of Metallography," Fifty Years of Progress in Metallographic Techniques, ASTM STP 430, Am. Soc. Testing Mats., 1968, pp. 17-62. ABSTRACT: The metallographer has...