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  • 1
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    Automated ultrasonic scanning by triangulation method (1967)
    In:  CASI
    Details
    Publication Date: 2006-10-26
    Description: Acoustic spectrometer system for ultrasonic nondestructive testing by triangulation method
    Keywords: MACHINE ELEMENTS AND PROCESSES
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Quality and reliability assurance research at MSFS (1968)
    In:  CASI
    Details
    Publication Date: 2013-08-31
    Description: Quality and reliability assurance research reviews at Marshall Space Flight Center
    Keywords: MACHINE ELEMENTS AND PROCESSES
    Type: RES. ACHIVEMENTS REV., VOL. 2 1968 (SEE N69-18059 07-34)
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Investigation of ODE integrators using interactive graphics (1978)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Two FORTRAN programs using an interactive graphic terminal to generate accuracy and stability plots for given multistep ordinary differential equation (ODE) integrators are described. The first treats the fixed stepsize linear case with complex variable solutions, and generates plots to show accuracy and error response to step driving function of a numerical solution, as well as the linear stability region. The second generates an analog to the stability region for classes of non-linear ODE's as well as accuracy plots. Both systems can compute method coefficients from a simple specification of the method. Example plots are given.
    Keywords: COMPUTER OPERATIONS AND HARDWARE
    Format: text
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    NASA TECHNICAL REPORTS
  • 4
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    Detection of weldment lack of fusion using opaque additives (1973)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Description: Problems in the production of aluminum weldments are caused by moisture absorbed by the aluminum oxide which forms on the surface before welding. Another problem is incomplete penetration of the weldment. The problems can be solved by coating the aluminum surfaces with an X-ray-opaque metal such as silver or copper. This will prevent the formation of moisture-absorbing aluminum oxide. Any protective coating remaining in an area of incomplete weld penetration can be seen in an inspection of the weldment conducted with the aid of an X-ray method. Details of copper deposition procedures are discussed along with a copper coating analysis and the testing of the weldments.
    Keywords: MACHINE ELEMENTS AND PROCESSES
    Type: Symposium on Nondestructive Evaluation; Apr 25, 1973 - Apr 27, 1973; San Antonio, TX
    Format: text
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    NASA TECHNICAL REPORTS
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