Structurally integrated strain gauge
LI66
HBM
The increased use of fiber composites and the systematic optimization of components presuppose a precise knowledge of the load situation. In many applications, sensor integration is the only way to meet the demand for modern lightweight structures with regard to production control, load monitoring, damage analysis and control signal generation. HBM’s new LI66 strain gages are directly embedded in the structure during the fiber composite production process. This allows measurements at spots that are no longer accessible after production. The most obvious feature of the LI66 strain gage are the two vertically attached contact pins, for contacting the strain gage embedded in the material.
The measuring leads are only connected to the gold-plated pins after manufacture, outside the structure, which makes all the handling easier. The special design of the LI66 strain gage allows you to decide whether the pins should be contacted inside the structure or on its outside. Thus, for example, with sandwich structures, the measuring leads or customized electronics can be introduced into the foam core. The special strain gage layout is designed in such a way that the measuring grid is outside the fibers running round the pin. Furthermore, special strain relief of the solder terminals prevents the forces working on the pin from being transferred to the measuring grid.
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