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Test method for laminated piezoelectric element involves applying direct voltage to element to set internal electrode layers to different potentials and monitoring detection current that flows when direct voltage applied
Test method for laminated piezoelectric element involves applying direct voltage to element to set internal electrode layers to different potentials and monitoring detection current that flows when direct voltage applied
The method involves applying a direct voltage to the laminated piezoelectric element (1) to set the internal electrode layers (121,122), which are adjacent but separated by piezoelectric layers, to different potentials and determining whether the laminated piezoelectric element under test is faulty or not by monitoring a detection current that flows when the direct voltage is applied.
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