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  • Q & A Related to Eddy Current Test Systems
    Eddy current testing provides an analog means of evaluating mechanical parts. It is not a go/no-go gauge, but a proportional means of reviewing the characteristics of machined components. Although a go/no-go capability can be added to this inspection technique through the addition of a user
  • 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
  • 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
  • Ultrasonic Flaw Detection
    Of all the applications of industrial ultrasonic testing, flaw detection is the oldest and the most common. Since the 1940s, the laws of physics that govern the propagation of sound waves through solid materials have been used to detect hidden cracks, voids, porosity, and other internal
  • Medical Device Link .
    Medical Device & Diagnostic Industry The growing need for more-stringent quality control, faster throughput, and lower manufacturing costs is increasing the importance and use of volumetric leak-rate testing of components by medical device manufacturers. This trend is also being driven
  • 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
  • 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
  • Tips for no-melt machining
    , dimensionally stable and can withstand temperatures over 400 F. Polycrystalline diamond tools are recommended when machining the PBI called Celazole, because it is an extremely hard material Process and test equipment manifolds machined from a PET bar stock called Ertalyte PET-P offer good dimensional
  • FEA For The Shop Floor
    flaws in the middle image, and blue shows flaws on the mesh. Predicted locations for porosity are in good agreement with observations. MSC.Marc and MSC.Dytran, nonlinear FEA programs developed by MSC.Software Corp., analyze manufacturing processes such as die casting, welding, bulk forming, profile
  • Therapeutic Dose: Extending QbD to Stability Testing
    of QbD is being extended to control not only the ongoing process, but the raw materials. Practitioners suggest that we look as closely at excipients as we currently do at active pharmaceutical ingredients (APIs). As a result, more companies are staring to measure things such as compressabilty, porosity

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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.