Patent ID: 8210055

Claim:
A film-backed strain gage rosette arrangement for stress measurement on a workpiece, whereby said film-backed strain gage rosette arrangement is to be mounted on a strainable element of the workpiece, said film-backed strain gage rosette arrangement comprising: a common carrier film arrangement, comprising a carrier film, wherein said common carrier film arrangement is adapted to be adhesively bonded onto the strainable element of the workpiece; a centering mark provided on said carrier film arrangement; a total of exactly eight strain gage measuring grids arranged on said common carrier film arrangement respectively at equal radial spacing distances from said centering mark on eight radial lines extending radially outwardly from said centering mark, wherein said radial lines are successively spaced radially from one another by 45° about said centering mark, and wherein said eight strain gage measuring grids form four opposite pairs of respectively two of said measuring grids that respectively lie 180° opposite one another about said centering mark; and a circuit arrangement by which said two measuring grids of each one of said opposite pairs respectively are circuit-connected or coupled with one another such that respective output values of said two measuring grids of each said opposite pair will be averaged with one another in a pairwise manner.