Determination of plain stress using strain gage rosettes

In the last decades, strain gage technology has developed into a standard procedure for experimental stress analysis.

In the last decades, strain gage technology has developed into a standard procedure for experimental stress analysis. It is generally the case that three fully independent stress components are fi xed on the surface of structural elements, so that three independent quantities, in this case strains, have to be measured in three different directions.

This is done with SG rosettes, specifi cally designed by the manufacturer with directions of measurement relative to one another. Other manufacturers, as well as the traditional SG rosette supplier, Hottinger Baldwin Messtechnik GmbH (HBM), are becoming established in Germany.