Nondestructive Evaluation (NDE) for Thermal-Spray Coatings

Thermal spray is the process of depositing metal, alloy, and ceramic coatings on properly prepared substrate materials so that they solidify on and bond mechanically, chemically, and metallurgically to the substrate materials. Thermal-spray coatings are applied to improve surface-wear characteristics, to provide resistance to heat, oxidation, and chemical environments; to restore dimension to the original equipment manufacturer\u27s (OEM) specifications; to reduce erosion wear; and to improve corrosion control

An FTIR spectrometer for remote measurements of atmospheric composition

The JPL IV interferometer, and infrared Michelson interferometer, was built specifically for recording high resolution solar absorption spectra from remote ground-based sites, aircraft and from stratospheric balloons. The instrument is double-passed, with one fixed and one moving corner reflector, allowing up to 200-cm of optical path difference (corresponding to an unapodised spectral resolution of 0.003/cm). The carriage which holds the moving reflector is driven by a flexible nut riding on a lead screw. This arrangement, together with the double-passed optical scheme, makes the instrument resistant to the effects of mechanical distortion and shock. The spectral range of the instrument is covered by two liquid nitrogen-cooled detectors: an InSb photodiode is used for the shorter wavelengths (1.85 to 5.5 microns, 1,800 to 5,500/cm) and a HgCdTe photoconductor for the range (5.5 to 15 microns, 650 to 1,800/cm). For a single spectrum of 0.01/cm resolution, which requires a scan time of 105 seconds, the signal/noise ratio is typically 800:1 over the entire wavelength range

Some Influences of French Classical Organ Music Upon the Chorale Partita Auf Meinen Lieben Gott by Georg Böhm

This paper discusses how German composer Georg Böhm was influenced by French classical organ music, and how this style is reflected in Böhm's chorale partita Auf Meinen Lieben Gott

Method of planarizing polycrystalline diamonds, planarized polycrystalline diamonds and products made therefrom

A method of planarizing a diamond film which generally includes orifices in the surface is described. The method includes first polishing the diamond film surface to reduce the surface roughness. A filler material is applied to the surface of the film to fill the orifices in the film. The film is polished to remove excess filler material and expose the diamond film surface. Also disclosed are planarized diamond films diamond substrate having a polished surface of both diamond and filler material and a variation in thickness of less than 8 percent

Method of electroplating a substrate, and products made thereby

Disclosed is an electroplating method and products made therefrom, which in one embodiment includes using a current density to form a conductive metal layer having a surface roughness no greater than the surface roughness of the underlying member. In another embodiment of electroplating a substrate surface having peaks and valleys, the method includes electroplating a conductive metal onto the peaks to cover the peaks with the conductive metal, and into the valleys to substantially fill the valleys with the conductive metal