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radiation heating

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220241
EISBN: 978-1-62708-341-6
... to heat electrically nonconductive materials through radiation or conduction heat-transfer processes. Flux Concentrators When placed in an induction field, magnetic materials tend to gather the lines of flux. Such materials are said to have high permeability. On the other hand, nonmagnetic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.smnm.t52140201
EISBN: 978-1-62708-264-8
... Blacksmiths have been heating and quenching steels for many centuries, and they have been able to control the temperature of the hot steel by observing the color of the light (radiation) coming from it. Table A2 presents a typical approximation of the color of a hot body and its temperature. The color...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440055
EISBN: 978-1-62708-262-4
... Abstract This chapter, a detailed account of furnaces and related equipment for heat treating, begins by describing three basic modes of heat transmission, namely conduction, convection, and radiation, followed by a discussion on the working principle, applications, advantages...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110209
EISBN: 978-1-62708-247-1
... and FMI technique for thermal detection are also briefly described in this article. Basics of IR Imaging Based on Blackbody Radiation Blackbody radiation physics describes the process by which all heated objects emit radiation to their surroundings. All the objects with temperature above 0 K emit...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1988
DOI: 10.31399/asm.tb.eihdca.t65220143
EISBN: 978-1-62708-341-6
... heating include the following: A device or method for measuring workpiece temperature. This often consists of an instrument to be given a direct indication of surface or subsurface temperature (e.g., a thermocouple or radiation pyrometer). It can also consist of some indirect measurement that can...
Image
Published: 01 June 1983
Figure 4.4 Heat transport mechanisms. Whereas relatively simple expressions can be given for heat transfer by conduction and radiation, convection is dependent on fluid specific heat, its rate of motion, temperature difference, as well as boundary layer phenomena. More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440085
EISBN: 978-1-62708-262-4
... conduction to a fluid followed by translation), and by thermal radiation. Noncontact temperature sensors depend on the thermally generated electromagnetic radiation from a surface of a test object. Electromagnetic radiation is emitted from a heated body when electrons within the body change to a lower energy...
Image
Published: 01 November 2013
Fig. 17 Schematic of a wet-hearth reverberatory furnace heated by conventional fossil fuel, showing the position of the hydrogen and oxygen gases relative to the molten metal bath. Arrows indicate heat radiated from top of furnace chamber. Source: Ref 5 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090191
EISBN: 978-1-62708-266-2
... treatment in alleviating radiation effects. Correlations between RIS and IASCC have also been performed using commercial-purity, high-purity, and phosphorus-doped high-purity heats of type 304 stainless steel and commercial-purity type 316 stainless steel ( Ref 6.83 , 6.84 ). Grain-boundary chromium, iron...
Image
Published: 01 November 2019
Figure 32 All objects warmer than absolute zero emit infrared radiation according to the Planck blackbody law. This property may be used to detect heat from short circuits via infrared microscopy. 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
..., particularly at low energies, to take advantage of their characteristic radiation. Most high intensity x-ray tubes have forced liquid cooling to dissipate the large amounts of anode heat generated during operation. Tube envelopes are constructed of glass, ceramic materials or metals, or combinations...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930023
EISBN: 978-1-62708-359-1
... to both the thermal gradient and the thermal diffusivity of the material. Convection in the gaseous atmosphere, which removes heat and dissipates it to the surroundings by mixing. Radiation emitted by the specimen. The amount of heat lost through this mode is proportional to the fourth power...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720001
EISBN: 978-1-62708-305-8
.... It is a nondestructive method that can be used to predict the strength of metals. The correlation between tensile strength and hardness for steels, brass, and nodular cast iron are shown in Fig. 4 . All heat treated steels are subjected to hardness testing to verify that the heat treatment produced the correct hardness...
Image
Published: 30 November 2013
-corrosion crack. Note the fan-shaped pattern radiating from the origin region in the upper left corner. When viewed under the electron microscope, this type of fracture is likely to reveal a cleavage or quasi-cleavage fracture mode. (b) Fracture surface of a large (~5-¾ × 6 in.) equalizer bar made from D6B More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870401
EISBN: 978-1-62708-314-0
..., lightning strikes, thermal oxidation, and extreme temperatures. It also discusses the factors that influence flammability. environmental degradation flammability heat damage lightning strikes polymeric matrix composites thermo-oxidative stability ultraviolet radiation EXPOSURE OF COMPOSITES...
Image
Published: 01 November 2012
Fig. 27 Brittle fracture of D6B steel equalizer bar. (a) Fracture surface of a large (~13.3 × 15 cm, or 5.25 × 6 in.) equalizer bar made from D6B steel heat treated to a hardness of 45–47 HRC. This bar, which supports the front end of a large crawler tractor, was in service for approximately More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900109
EISBN: 978-1-62708-358-4
... absorption rate of the total tool. Convection or radiation heating methods are unable to maintain the rate of heating necessary to reach equilibrium with the rate of heat absorption. The ability of a salt bath to supply heat at a rapid rate enhances the uniformity of properties and the resultant tool quality...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780153
EISBN: 978-1-62708-281-5
... and UV radiation will accelerate the oxidation process. Oxygen that is aided by heat (thermal oxidation) and UV radiation (photo-oxidation) will attack the bonds in a polymer chain. Depending on the material, oxygen may either form carbonyl groups or cross link. Oxidation can also occur when certain...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500133
EISBN: 978-1-62708-317-1
... of temperature by a data curve in LS-Dyna. Using standard empirical relations, the convective heat-transfer coefficient, h conv , and radiation heat-transfer coefficient, h rad , were calculated. The effective heat-transfer coefficient, h eff , is calculated by adding h conv and h rad ; the results...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870333
EISBN: 978-1-62708-314-0
... on the surface at the point of impact; however, the delamination often radiates from the impact point, resulting in an extensive network of internal matrix cracks and delaminations. 12.2 Ultrasonic Inspection Ultrasonic inspection is the most valuable technique for inspection of composite parts. The two...