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  • Medical Device Link .
    that the medical device industry adapted some test techniques, such as the Gurley porosity test and the Elmendorf tear test for paper-barrier packages, from the paper industry, but few tests were available to determine the seal strength or integrity of the medical package. A series of significant events over
  • Q & A Related to Eddy Current Test Systems
    using profiling techniques, find seams in welded tubing, find cracks in machined surfaces, detect features like groves and chamfers in machined rods, inspect for hardness, chemistry and porosity differences between parts, and measure materials thickness, to name just a few of its myriad applications
  • Using a nondestructive test to qualify corrosive specialty gas cylinders
    . The electroless nickel inherently passivates, forming a strongly bonded, low-porosity surface layer that resists undercutting and has a consistent thickness from top to bottom, as seen in Figure 1. The two scanning electron microscope (SEM) micrographs in Figure 2 also illustrate the coating's beneficial
  • Sterilizing Filters: Right Flow, Right Size Critical
    This quick, one-time registration gives you access to members-only site benefits. Another common mistake is using 47-mm discs for testing. Tests for flow rate using 47-mm discs are meaningless, since they can evaluate only the porosity and thickness of the membrane itself. Critical and beneficial
  • MICRO: 'Round The Circuit
    . The partners say they lowered the dielectric constant to 1.5 by slightly increasing the film's porosity and decreasing its wall density. Dow Corning's
  • Medical Device Link .
    readings for various characteristics, including material porosity, seals, assembly deficiencies, fit-and-function problems, and fastening and joining integrity. Volumetric leak-rate data for both accepted and rejected parts may also be required by OEMs as input for statistical process control (SPC
  • MICRO: Product Extras (June '2000) will use Poco Graphite's PyroGraph for its ion implantation beam-line components. The graphite is produced using specially formulated graphite infiltrated with pyrolytic carbon. It targets high-purity vacuum processes. The infiltration process fills and seals the material porosity, creating
  • Wear Resistance of Gas Nitrided Astaloy CrL TM Sintered Steel
    Gas Nitriding treatment is proposed in combination with Shot Peening as a processing route to increase the wear performances of PM components made of prealloyed powder Astaloy CrLTM. Porosity closure by surface densification allows limiting the depth of treatment and containing dimensional
  • MICRO: Building Copperopolis II - Yang (May 2000)
    as well as their optical properties, such as index of refraction (n) and extinction coefficient (k). Because n and k values depend both on the electronic structure of a polymer and on its porosity, they can serve as good indicators for monitoring low-k polymer formation. One low-k ILD material is SiLK
  • FEA for the factory
    Designers simulate manufacturing processes to get parts right the first time. A simulation predicts porosity in an aluminum-wheel casting. The black area in the top wheel shows where the metal is more solid than liquid. The gray area in the bottom wheel shows where the metal is 100% solidified

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  • Organic coatings
    The porosity testing equipment .type 102. was modi- fied for this application.
  • Non‐metallic inorganic coatings
    The porosity testing equipment .type 102. was modi- fied for this application.
  • Summary
    Although used for nearly 20 years, porosity testing techniques and equipment are still not full standardized with regard to the number of variables which can affect the final use.
  • Porosity Testing of Polyester Vascular Grafts
    In actual practice, there are considerable variations in the equipment used for porosity testing .
  • Biotechnology, Chemical and Materials Engineering II
    The type of equipment for testing apparent porosity and body density is APBD-001 made by Jingda from Luoyang and the testing is running by GB /T 2997.
  • Strength and Stiffness of Porous Materials
    In practice with scattered experimental data, with low reli- ability at high porosities , andlor different types of test equip- ment being used to produce stiffness and strength data, the “quality of regression” may be a delicate matter to decide.