| 摘要 |
A test apparatus ( 1 ) is provided for examining sheet-like components ( 8 ), in particular membrane electrode assemblies for use in a fuel cell, at least in sections and preferably continuously, for perforations ( 7 ), which apparatus includes means ( 9 ) for applying a test gas ( 6 ) to one side of the sheet-like component, means ( 2 ) for emitting electromagnetic radiation ( 12 ) in a wavelength region adapted to the test gas ( 6 ), which means are arranged on that side ( 11 ) of the sheet-like component ( 8 ) which is remote from the test gas ( 6 ), and means ( 3, 4, 5 ) for detecting any electromagnetic radiation ( 12 ) which has been absorbed by the test gas ( 6 ) in a characteristic wavelength region, and a method for carrying out an examination of this type.
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