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  • Finite Element Correction for Stress Relaxation in Complex Geometries (.pdf)
    Subsurface x-ray diffraction residual stress measurements are necessary to fully assess the magnitude and depth of stress distributions. Layers of material must be removed for subsurface measurement electrolytically to avoid plastic deformation.
  • Factors that Determine Symbol Readability (.pdf)
    Readability is determined by the extent to which an imager can decode a directly marked symbol. Primary factors that affect readability are: Contrast, Quiet Zone, Error Correction, Element Size, and Mark Consistency.
  • Focusing Objective Theory (.pdf)
    Some focusing applications may require a higher degree of aberration correction than can be achieved in single lenses such as Bestforms. Whether correction over larger apertures, several wavelengths or a wider field is needed, it may be necessary to use multi-element lens objective.
  • Noise Marker
    By choosing noise marker as opposed to a normal marker, the value displayed is the equivalent value in a 1-Hz noise power bandwidth. When the noise marker is selected, the sample detection mode is used (best for noise), several trace elements about the marker are averaged, and a correction factor
  • PdM Effectiveness (.doc)
    As studies and experiences show, a successful Predictive Maintenance (PdM) Program consists of 4 key elements: Detection, Analysis, Correction, and Verification. To ensure complete success with your PdM Program, be sure that all elements are given due consideration and that they are addressed
  • Utilizing Aspheres in Optical Design
    of the optics industry due to the distinct advantage that they offer. Utilizing aspheres in deign allows for straight-forward aberration correction. When compared to traditional spherical optics, it takes significantly fewer lenses to design out the large number of aberrations present in lens systems
  • X-Ray Diffraction Characterization of Residual Stress and Hardness Distribution in Induction Hardened Gears (.pdf)
    removal and correction for the resulting stress. relaxation. The corrections may dominate the results. obtained at depths near the case/core interface. Traditional closed-form corrections may be inadequate. when applied to gear teeth. A novel finite element. analysis (FEA) correction technique
  • Introduction to reflective aberration corrected holographic diffraction gratings
    groove shape makes aberration correction possible. This new design parameter has made. possible a new class of instrument designs, aberration corrected concave grating designs.

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