From the category archives:

Ceramics & Glasses

Table of Emissivities in Three Popular Spectral Regions

May 9, 2009

The Table of Emissivity on the INFRAPOINT Messtechnik GmbH website (Click here to visit) has summary data for a wide variety of materials broken down into three distinct spectral regions for the wavelength regions where the majority of infrared radiation thermometers and Infrared Thermal Imaging cameras operate. First and second are tables that deal with [...]

Read the full article →

Prediction of the thermal radiative properties of an X-Ray µ-tomographied porous silica glass

November 4, 2008

Prediction of the thermal radiative properties of an X-Ray µ-tomographied porous silica glass B.Rousseau, D.De Sousa Meneses, P.Echegut, M.Di Michiel, J.-F.Thovert Prediction of the thermal radiative properties of an X-Ray µ-tomographied porous silica glass Applied Optics 46 4266-4276, (2007) ABSTRACT “A Monte Carlo ray tracing procedure is proposed to simulate thermal optical processes in heterogeneous [...]

Read the full article →

Texture and porosity effects on the thermal radiative behavior of alumina ceramics

October 30, 2008

Texture and porosity effects on the thermal radiative behavior of alumina ceramics Int. J. Thermophys. (in press) [view] New Article By: O.Rozenbaum, D.De Sousa Meneses; P.Echegut Texture and porosity effects on the thermal radiative behavior of alumina ceramics Int. J. Thermophys. (in press) [view] ABSTRACT “Thermal and optical properties of ceramics are dependent on radiation [...]

Read the full article →

STANDARDIZATION OF THERMAL EMITTANCE MEASUREMENTS. PART III.

July 21, 2008

NORMAL SPECTRAL EMITTANCE, 800-1400 K, Authors: Harrison, W.N. ; Richmond, J.C. ; Skramstad, H.K. From the Energy Citations Database, OSTI IdentifierOSTI ID: 4830164 Technical Report, WADC-TR-59-510(Pt.III), National Bureau of Standards, Washington, D.C.,1961 Sep 01 ABSTRACT: The equipment for direct measurement of normal spectral emittance was extensively modified by incorporation of a new external optical system [...]

Read the full article →

ASTM E423 – 71(2002)

May 19, 2008

ASTM E423 – 71(2002) Standard Test Method for Normal Spectral Emittance at Elevated Temperatures of Nonconducting Specimens Developed by Subcommittee: E21.04 |Book of Standards Volume: 15.03 “1. Scope 1.1 This test method describes an accurate technique for measuring the normal spectral emittance of electrically nonconducting materials in the temperature range from 1000 to 1800 K, [...]

Read the full article →

ET10 Reflectometer Measures Emissivity

March 21, 2008

San Diego CA, USA –Surface Optics’ ET10 measures emissivity values in two most commonly used spectral regions, 3 to 5 and 8 to 12 microns. Its main application is to produce emissivity values for the infrared cameras. Advanced IR cameras require the input of an emissivity value for accurate temperature calculations. The emissivity values obtained [...]

Read the full article →

IR Emission Spectroscopy of Molten Salts and Other Liquids

March 8, 2008

IR Emission Spectroscopy of Molten Salts and Other Liquids Using Thick Samples as Reference J. Hvistendahl, E. Rytter, and H. A. Øye Applied Spectroscopy, Vol. 37, Issue 2, pp. 182-187 (1983) Abstract “The IR emittance of liquids relative to a blackbody is dependent on the reflectivity at the surface of the sample. This dependency leads [...]

Read the full article →

Emittance of infrared windows

March 5, 2008

Emittance measurements on infrared windows exhibiting wavelength dependent diffuse transmittance S. E. Hatch Applied Optics, Vol. 1, Issue 5, pp. 595-601 Citation S. E. Hatch, “Emittance measurements on infrared windows exhibiting wavelength dependent diffuse transmittance,” Appl. Opt. 1, 595-601 (1962)

Read the full article →

Spectral emittance of refractory materials

March 1, 2008

Spectral emittance of refractory materials Henry H. Blau, Jr. and John R. Jasperse Applied Optics, Vol. 3, Issue 2, pp. 281-(1964) Citation H. H. Blau, Jr. and J. R. Jasperse, “Spectral emittance of refractory materials,” Appl. Opt. 3, 281- (1964)

Read the full article →

High-Temperature Spectral Emittance of Oxides of Erbium, Samarium, Neodymium and Ytterbium

January 4, 2008

Author: Guazzoni, Guido E.1 Source: Applied Spectroscopy, Volume 26, Issue 1, Pages 1-113 (January/February 1972) , pp. 60-65(6) Publisher: Society for Applied Spectroscopy Abstract: Normal spectral emittance data are reported for solid specimens of the oxides of erbium, samarium, neodymium, and ytterbium… over the spectral range ..0.5-5.0 um and at sample temperatures from 1540 up [...]

Read the full article →

Spectral Emittance of Ablation Chars, Carbon, and Zirconia to 3700 deg K

December 9, 2007

Hemispherical Spectral Emittance of Ablation Chars, Carbon, and Zirconia to 3700 deg K Authors: R. G. Wilson; NATIONAL AERONAUTICS AND SPACE ADMINISTRATION HAMPTON VA LANGLEY RESEARCH CENTER Abstract: The initial results of the application of special optical techniques to high-temperature emittance and reflectance studies of an ablation-material char and certain other refractory materials representative of [...]

Read the full article →

Normal Spectral Emittance Measurements (600–2000 nm) of Alumina

October 15, 2007

An online General Electric Company Downloadable Corporate R& D Technical Report (PDF Format – 308KB) Report Title: Normal Spectral Emittance Measurements (600–2000 nm) of Polycrystalline Alumina (PCA) at High Temperatures Author(s) L. Bigio, of the Component Ceramics Laboratory GE Report Number: 99CRD128 Date: November 1999 Number of Pages: 8 Key Words: spectral emittance, 600-2000 nm, [...]

Read the full article →

Emissivity and Optical Properties of UO(2)

September 21, 2007

Emissivity and Optical Properties of UO2 Summary with Equations Discussion of Data Assessment/Analysis References Tabulated Values: Table 1: Normal Spectral Emissivity of Premelted UO2 at a Wavelength of 630 nm Table 2: Normal Spectral Emissivity of Liquid UO2 at a Wavelength of 630 nm Graphs: Fig. 1: UO2 Emissivity Fig. 2: Average Refractive Index of [...]

Read the full article →

← Previous Entries