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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
... articulated mirror to check a weld after dye penetrant inspection. Courtesy of A. Antonatos Fig. 2 Use of articulated mirror to check a crack inside a bore after dye penetrant inspection. Courtesy of A. Antonatos The effectiveness of VI as an NDT method depends on: Lighting...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001281
EISBN: 978-1-62708-170-2
... surface before applying a polytetrafluoroethylene coating is a perfect combination with the hard anodizing. Provide unique, decorative colors: Colored anodic coatings are produced by different methods. Organic dyes can be absorbed in the pores of the coatings to provide a whole spectrum of colored...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003998
EISBN: 978-1-62708-185-6
... representative forged structures. Nondestructive testing most commonly includes dye-penetrant and ultrasonic tests. Forging defects on the forged surface is usually inspected visually and using dye-penetrant inspection methods. Forging laps, folds, and other surface defects are visually inspected and removed by...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005338
EISBN: 978-1-62708-187-0
... media and mold design must be strong enough to support the forces exerted on the setup by the molten metal. Castings are evaluated using a number of destructive and nondestructive techniques. Castings can be evaluated using radiographic examination, dye penetration, mechanical testing, and...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003012
EISBN: 978-1-62708-200-6
... on average. Colorants are categorized as dyes (soluble in the medium they color) or pigments (insoluble solids that are finely divided or powdered). Dyes are used to color transparent plastics such as PS and styrene-acrylonitrile, but most of the colorants used in the plastics industry are...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003231
EISBN: 978-1-62708-199-3
... for different materials and defect types. Table 1 Typical penetration time for a dye penetrant Surface under examination Type of defect Penetration time, min All Heat-treatment cracks 2 Grinding 10 Cracks 10 Ceramics Cracks 2–5 Porosity 2–5 Aluminum welds...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009008
EISBN: 978-1-62708-185-6
...: Two strips of cellophane tape are wrapped around the cylindrical surface, such that there is a thin band of bare metal around the circumference at midheight. The specimens are then sprayed with blue steel dye, and the strips of tape are removed when the dye has dried. The gage band is approximately 3...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006786
EISBN: 978-1-62708-295-2
... with tin and subsequently given a hydrogen embrittlement relief heat treatment at 200 °C (390 °F). Dye-penetrant inspection revealed numerous cracks near one end of the springs. Metallographic examination and EDS revealed that the cracks were filled with tin. It was concluded that the ends of the...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006440
EISBN: 978-1-62708-190-0
... workpiece; consequently, they require excessively long periods of time to migrate into fine flaws. Another necessary property of a penetrant is its capability of dissolving an adequate amount of suitable fluorescent or visible-dye compounds. Finally, the penetrant liquid must be removable with a suitable...
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
... in crevices and attracts dyes that accentuate flaw visibility. Locating fabrication discontinuities, stress cracks Will not find subsurface discontinuities Ease of application. Improvement over simple visual inspection Most metals and composites with nonporous surfaces Magnetic particle...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006755
EISBN: 978-1-62708-295-2
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006772
EISBN: 978-1-62708-295-2
...) Portable hardness tester Optical microscope and/or a borescope with low-to-moderate magnification Metallographic polishing and chemical etching kit Dye penetrant kit Magnetic-particle inspection kit Simple chemical tests for plating and alloy identification Visual inspection assisted...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006652
EISBN: 978-1-62708-213-6
... expansion of scientific knowledge. The field of organic solids is still constituted by encompassing categories such as polymers, plastics, epoxies, long-chain hydrocarbons, esters, foams, resins, detergents, dyes, organic composites, coal and coal derivatives, wood products, chemical reagents, and...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003230
EISBN: 978-1-62708-199-3
... Magnifying systems to evaluate surface finish, surface shapes (profile and contour gaging), and surface microstructures Dye and fluorescent penetrants and magnetic particles to enhance the observation of surface cracks (and sometimes near-surface conditions in the case of magnetic-particle inspection...
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
... above Mostly metals and composites Liquid penetrant PT Liquid penetrant fluid preferentially collects in crevices and attracts dyes that accentuate flaw visibility. Locating fabrication discontinuities, stress cracks Will not find subsurface defects Ease of application. Improvement over simple...
Book Chapter

Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005243
EISBN: 978-1-62708-187-0
... sample of the system sand to absorb the methylene blue dye. In this test, the dye is added to the test sample by a buret. The end point of the titration is read by the technician as a “bursting halo” when a drop of the test material is placed onto a hardened piece of filter paper with a stirring rod. The...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005277
EISBN: 978-1-62708-187-0
... are normally invisible to x-rays and to dye penetrant testing. They are only revealed by gross mechanical deformation that opens the crack. The deleterious flow tube structure that forms when filling downward or horizontally is usually eliminated when filling vertically. However, even in this...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003028
EISBN: 978-1-62708-200-6
... developed to test paints and dyes for colorfastness. It simulates the exposure to sunlight received by a material that is indoors. It is now commonly used to test plastic materials for color stability and degradation when exposed to sunlight through window glass. It can also be used to demonstrate how...
Book Chapter

By Ted Kostilnik
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001235
EISBN: 978-1-62708-170-2
... multiplied by 100. About 15 min is required to make one measurement. The Peenscan method is offered in lieu of visual inspection in MIL-S-13165 and consists of painting a part before peening with a dye sensitive to ultraviolet light, shot peening the part, inspecting the part under the ultraviolet light...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003827
EISBN: 978-1-62708-183-2
.... Incomplete removal of dye penetrant solution for nondestructive testing has been reported to cause localized attack if it is merely wiped off the surface. Because the dye penetrant solution seeps out of crevices very slowly, this problem is usually not discovered until well after the occurrence. Precision...