Patent ID: 7004622

Claim:
A system for measuring a condition of a turbine engine component, said condition being selected from the group consisting of strain and combination of temperature and strain of said component, said system comprising: a first electrically non-conducting film comprising a material selected from the group consisting of dielectric materials and electrically insulating materials, said first film being disposed on a substrate of said turbine engine component without a removal of a substrate material to compensate for a thickness of said first electrically non-conducting film; and at least a film of an electrically conducting material disposed on said first electrically non-conducting film wherein a change in a property of said at least a film of said electrically conducting material is measured, said change in said property relating to said condition of said turbine engine component, said property being electrical resistance of said film of said electrically conducting material when said condition is strain, and said property being electromotive force developed in said film of said electrically conducting material when said condition includes temperature; wherein said first electrically non-conducting film comprises a material that has a thermal expansion coefficient selected such that said electrically non-conducting film and said at least a film of said electrically conducting material remain adhered to films and substrates adjacent thereto through at least a cycle of extreme operating temperature, and wherein a thermal strain between said first electrically non-conducting film and said substrate is maintained at less than about 0.006.