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ultraviolet-light

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Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005759
EISBN: 978-1-62708-171-9
... and fume, ultraviolet light, and mechanical hazards. The means selected for safeguarding personnel must be based on a formal risk assessment that meets ANSI/RIA standards. The safeguards include sensing devices, barriers, awareness signals, procedures, and training. It also provides guidelines...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0009084
EISBN: 978-1-62708-177-1
... fabric composite part as a result of short-term ultraviolet-light exposure. The oxidation is found to have penetrated only approximately 5 μm deep into the surfacing film in this time period. Transmitted light, phase contrast, 20× objective Fig. 4 Micrograph showing oxidation on the surface...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001731
EISBN: 978-1-62708-178-8
... of the incident light. (b) A second sample (identical to the first) in the light path that passed through the first sample Abstract Abstract Ultraviolet/visible (UV/VIS) absorption spectroscopy is a powerful yet cost-effective tool that is widely used to identify organic compounds and to measure...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003231
EISBN: 978-1-62708-199-3
...-penetrant inspection uses penetrants that fluoresce brilliantly under ultraviolet light. The sensitivity of a fluorescent penetrant depends on its ability to form indications that appear as small sources of light in an otherwise dark area. Sensitivity levels of fluorescent penetrants are: ultralow (Level...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003692
EISBN: 978-1-62708-182-5
... resins Acrylics Excellent light and ultraviolet stability, gloss, and color retention. Good chemical resistance and excellent atmospheric weathering resistance. Resistant to chemical fumes and occasional mild chemical splash and spillage. Minimal chalking, little if any darkening on prolonged...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003231
EISBN: 978-1-62708-199-3
... is performed in a suitably darkened area using black (ultraviolet) light, which causes the penetrant to emit visible light. The actions of penetrant and developer are shown in Fig. 1 . Fig. 1 Actions of penetrant and developer. (a) Penetrant liquid is drawn into an open crack by capillary action. (b...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006051
EISBN: 978-1-62708-172-6
... and ultraviolet stability, gloss, and color retention. Good chemical resistance and excellent atmospheric weathering resistance. Resistant to chemical fumes and occasional mild chemical splash and spillage. Minimal chalking; little if any darkening on prolonged exposure to ultraviolet light Thermoplastic...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003232
EISBN: 978-1-62708-199-3
... as the base for wet particles. For increased visibility, particles are coated with fluorescent pigment by the manufacturer. Inspection is conducted in total or partial darkness, using ultraviolet light to activate the fluorescent dyes. Inspected surfaces should be illuminated with a minimum of 1000 μW/cm...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006468
EISBN: 978-1-62708-190-0
... or hoods and an ultraviolet light; these are used during inspection with fluorescent particles. Stationary power packs serve as sources of high-amperage magnetizing current to be used in conjunction with special fixtures or with cable-wrap or clamp-and-contact techniques. Rated output varies from...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003232
EISBN: 978-1-62708-199-3
... ferrites (Ni x Fe 2 O 4 ), and some nickel alloys. Important particle characteristics include magnetic properties, size, shape, density, mobility, and degree of visibility and contrast. A mercury-vapor lamp is a convenient source of ultraviolet light, emitting a light...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006492
EISBN: 978-1-62708-207-5
..., or spillage. Not suitable for immersion service A high-quality oil-based coating with good compatibility with most other coating types. Applications are similar to alkyds but with somewhat better performance. Thermoplastic resins Acrylics Good exterior durability. Excellent ultraviolet light...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006008
EISBN: 978-1-62708-172-6
... Prevention: Use a correctly formulated coating system. Probable causes: Disintegration of the paint binder on exposure to weathering and/or ultraviolet light Prevention: Apply a suitable topcoat with high resistance to chalking and with ultraviolet resistance. Probable causes: High...
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
... is performed in a suitably darkened area using black (ultraviolet) light, which causes the penetrant to fluoresce brilliantly. Materials Used in Penetrant Inspection In addition to the penetrants themselves, liquids such as emulsifiers, solvent/cleaners and removers, and developers are required...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003527
EISBN: 978-1-62708-180-1
... photograph of a fatigue fracture Fig. 14 Fracture surface diffuse lighting. (a) Dual-side incandescent diffuse copystand lighting setup. (b) Resulting diffuse lighting photograph of a fatigue fracture Fig. 15 Ultraviolet lighting. (a) Single-side ultraviolet copystand lighting setup. (b...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006073
EISBN: 978-1-62708-172-6
... in the activity of the sun affect the wavelength of emitted radiation. Changes in ultraviolet light (UV) radiation are more pronounced than those of other ranges of radiation. The distribution of emitted energy is such that 9% is in the UV region, 45% is in the visible range, and the remaining 46...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003809
EISBN: 978-1-62708-183-2
... to ultraviolet light. Ultraviolet light causes some coatings to chalk. For some coatings, proper pigmentation will prevent these phenomena, and this can be determined by comparing the columns for pigmented (F) and clear (G) films. Salt spray (E) is not a predictor of service life, and coatings cannot...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001833
EISBN: 978-1-62708-181-8
... of Light Meters Test Exposures Stereo Images Auxiliary Equipment Lighting of Etched Sections Lighting of Highly Reflective Parts Lighting of Deeply Etched Specimens to Show Grain Flow Photography with Ultraviolet Illumination Polaroid films is most commonly used with view camera...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002171
EISBN: 978-1-62708-188-7
... °C (250 °F) for 10 min (typical) Mount artwork Expose to ultraviolet light Develop image for 2 to 3 min by immersion in resist developer (organic solvent) Postbake 20 min at 120 °C (250 °F) (typical) Preactivate by anodic treatment as the fourth item above Rinse thoroughly without...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003239
EISBN: 978-1-62708-199-3
...-gloss appearance when viewed with oblique illumination. Thermally quenched phosphors are organic compounds that emit visible light when excited by ultraviolet light. The brightness of a phosphor is inversely proportional with temperature over a range from room temperature to about 400 °C (750 °F...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003239
EISBN: 978-1-62708-199-3
...-gloss appearance when viewed with oblique illumination. Thermally Quenched Phosphors Thermally quenched phosphors are organic compounds that emit visible light when excited by ultraviolet light. The brightness of a phosphor is inversely proportional with temperature over a range from room...