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Destructive And Non Destructive Testing Method Paper Presentation & Seminar
Destructive and non-destructive methods have been used for the determination of micro-traces of antimony in high-purity silicon powder. The destructive method was based on sub-stoichiometric radio-activation analysis with solvent extraction using BPHA and cupferron as organic reagents. The antimony contents in high-purity silicon can be determined by the proposed method. A new non-destructive method was developed for the detection of refrigerant leakage at an evaporator's inflow. Nitrogen and oxygen gas were successively blown through the evaporator. A gas analyser was applied at the outflow of the evaporator and the oxygen concentration measured.
It was possible to detect any leakage by investigating the oxygen concentration–time history diagram. Non-destructive method for detecting zones with non-conductive materials, such as materials that include glass fibres, in a part made of a conductive composite, such as a composite whose reinforcing fibres are carbon fibres, provided with an organic coating, that comprises the following stages: a) providing a device for applying an electric potential on the surface of said part; b) determining the dielectric breakdown potential Pr corresponding to the thickness E of the coating; c) applying said dielectric breakdown potential Pr with said device to the part for the purpose of identifying those zones that have non-conductive materials when dielectric breakdown does not occur in them
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