Patent ID: 6378371
Filing Date: 2002-04-30
Classification: F16J,G01M

Abstract:
Natural frequency testing apparatus for a brush seal comprising:an enclosure having a mount; an arcuate brush seal segment carried by said mount, said brush seal segment including a plurality of bristles carried on at least one backing plate, with the bristles extending freely therefrom terminating in bristle tips; an element within said enclosure having an arcuate surface for engaging the bristle tips, said element and said brush seal segment defining a seal between two regions on opposite sides of said seal at different pressures, respectively, so as to differential pressure load said brush seal segment; and a connection carried by said enclosure for coupling the enclosure to a shaker whereby the enclosure and the brush seal segment mounted therein can be vibrated through a range of frequencies to ascertain a natural frequency of the brush seal segment under said differential pressure loading.