Method of nondestructive tigtness testing based on gas discharge visualization

摘要

A method of nondestructive noncontact tightness testing based on gas discharge visualization. The invention relates to tightness testing methods and can be used for testing weld seams of articles inside of which there is a working medium (matter), for example, of chemical power sources. The method includes subjecting the article being tested to a high voltage pulsed electric field formed between the positive electrode and a metallized layer of the article casing, recording on a photo carrier, for which purpose the article is placed on a dielectric plate arranged on a positive electrode, and its surface area is selected in the ratio to the article surface area not less than 7:1, and is additionally subjected to an electric field of the preliminary polarized dielectric plate with a surface area ratio to the surface area of the positive electrode of 1.2:1, and is symmetrically arranged on the positive electrode relative to its center between the latter and the article being tested.