LEAK DETECTION DURING EVACUATION OF A TEST CHAMBER OR OF A TEST ITEM

Method for detecting a leak in a specimen contained in a test chamber, the method comprising the following steps: positioning the specimen in the test chamber, evacuating the test chamber, measuring the partial pressure in the test chamber as a measuring signal M during the evacuation of the test ch...

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Bibliographic Details
Main Authors GERDAU, Ludolf, PUCHALLA-KÖNIG, Jochen
Format Patent
LanguageEnglish
French
German
Published 25.07.2018
Subjects
MEASURING
PHYSICS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
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Summary:Method for detecting a leak in a specimen contained in a test chamber, the method comprising the following steps: positioning the specimen in the test chamber, evacuating the test chamber, measuring the partial pressure in the test chamber as a measuring signal M during the evacuation of the test chamber, forming a difference D from the progress of the signal M(t) over time t and a fitting function F(t) including the term t−n, where n is a positive rational number, and judging the presence of a leak in the specimen based on the differential signal D.
Bibliography:Application Number: EP20160763283