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radiography

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Image
Published: 01 April 2013
Fig. 8 Digital radiography image of a die cast aluminum carburetor. Porosity appears as dark spots in the area of the center bore, through the vertical center of the image. Courtesy of B.G. Isaacson, Bio-Imaging Research, Inc. More
Image
Published: 01 April 2013
Fig. 10 Digital radiography images of an investment cast jet engine turbine blade showing detail through a wide range in material thickness. The trailing edge of the blade (along the top of the image) is 2 mm (0.080 in.) thick, the root section of the blade (to the far left in the image) is 19 More
Image
Published: 01 November 2010
Fig. 12.13 Common core defects detected by radiography More
Image
Published: 01 November 2010
Fig. 12.14 Water in the core detected by radiography More
Image
Published: 01 April 2004
Fig. 5.40 Representation of geometric magnification in microfocus x-radiography More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720233
EISBN: 978-1-62708-305-8
... Abstract This chapter discusses radiography methods using x-rays, gamma rays, and neutrons. It begins with a discussion on the applications and principles of radiography followed by sections providing information on the sources of radiation, classifications, and characteristics of x-ray tubes...
Image
Published: 01 April 2013
Fig. 7 Schematic of flaws and their x-ray images. Defect types that can be detected by x-ray radiography are those that change the attenuation of the transmitted x-rays. Source: Ref 4 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930039
EISBN: 978-1-62708-359-1
... is included that encompasses techniques used to characterize the locations and structure of internal and surface defects, including radiography, ultrasonic testing, and liquid penetrant inspection. The next group of characterization procedures discussed is destructive tests, requiring the removal of specimens...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720393
EISBN: 978-1-62708-305-8
... evaluation methods to flaw detection in P/M parts. The nondestructive evaluation methods covered are mechanical proof testing, metallography, liquid penetrant crack detection, filtered particle crack detection, magnetic particle crack inspection, direct current resistivity testing, x-ray radiography...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140047
EISBN: 978-1-62708-335-5
.... This chapter describes the causes and control of porosity and inclusions in aluminum castings as well as the combined effects of hydrogen, shrinkage, and inclusions on the properties of aluminum alloys. In addition, it discusses the applications of radiography to reveal internal discontinuities in aluminum...
Image
Published: 01 April 2004
x-radiography. More
Image
Published: 01 April 2013
Fig. 9 Comparison of (a) computed tomography (CT) system and a CT image at the height of the flaw shows the flaw in more detail and in a form an inexperienced viewer can readily recognize; (b) radiography system and a high quality digital radiograph of a solid rocket motor igniter shows More
Image
Published: 01 April 2013
Fig. 9 Evaluation of cast transmission housing assembly. (a) Photograph of cast part. (b) Digital radiography image used to verify the steel spring pin and shuttle valve assembly through material thicknesses ranging from 3 mm (⅛ in.) in the channels to 25 mm (1 in.) in the rib sections More
Image
Published: 01 April 2004
Fig. 4.30 Example of a large area, 10 × 10 mm (0.4. × 0.4 in.), made fluxless, at 10 °C (18 °F) superheat, using In-15Pb-5Ag solder introduced in the form of a wire cross, shown in Fig. 3.30 . The joint fill is revealed by x-radiography. A line of residual voids marks the location More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720001
EISBN: 978-1-62708-305-8
... be automated Normally requires coupling to material either by contact to surface or immersion in a fluid such as water. Surface needs to be smooth. Adhesive assemblies for bond integrity; laminations; hydrogen cracking Radiography Changes in density from voids, inclusions, material variations; placement...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270019
EISBN: 978-1-62708-301-0
... of the induced current. The method is useful for detecting surface and subsurface flaws, for sorting dissimilar metals, for detecting variations in composition and microstructure, and for measuring the thickness of nonconductive coatings. The method is limited to conducting materials. Radiography Using x-rays...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200197
EISBN: 978-1-62708-354-6
... seeping from the discontinuity. ASTM has prepared standard procedures for liquid penetrant inspection in ASTM E-165, E-433. Acceptance criteria should be indicated at the time of order. Radiography Radiography has become the major non-destructive test method for determining the presence of internal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050245
EISBN: 978-1-62708-311-9
...; laminations; hydrogen cracking Radiography Changes in density from voids, inclusions, material variations; placement of internal parts Can be used to inspect wide range of materials and thicknesses; versatile; film provides record of inspection Radiation safety requires precautions; expensive; detection...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930057
EISBN: 978-1-62708-359-1
.... 2 Wormhole porosity in a weld bead. Longitudinal cut. 20x Radiography is the most widely used nondestructive method for detecting subsurface gas porosity in weldments. The radiographic image of round porosity appears as round or oval spots with smooth edges, and elongated porosity appears...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030360
EISBN: 978-1-62708-282-2
... of available techniques is reduced. For example, x-ray radiography is commonly carried out at the fabrication stage but is generally not a realistic inspection method in service, where gamma radiography is generally employed due to its portability and independence from an external power source...