Patent ID: 8138773
Filing Date: 2012-03-20
Classification: G01N

Abstract:
1. An apparatus for sensing structural integrity, comprising: a frangible non-conductive material layer; a resilient non-conductive material layer disposed on top of the frangible non-conductive material layer; a breakable conductor sense loop within the frangible non-conductive material layer; and a conductive corrosion sense loop within the resilient non-conductive material layer and having a portion exposed through at least one weep hole in the resilient non-conductive material layer; wherein the frangible non-conductive material is disposed adjacent to a structure surface such that the breakable conductor sense loop is disrupted when a fracture occurs in the structure surface and the exposed portion of the conductive corrosion sense loop corrodes when moisture enters the at least one weep hole to induce a change in an electrical property of the conductive corrosion sense loop and wherein the non-conductive material layers are disposed between the structure surface and a second structure surface in a gasket configuration such that both surfaces of the non-conductive material layers are sealed from moisture.