Development of a commercial transducer for measuring pressure and friction on a model die surface

Production of components close to the final shape increases the demand for correct dimensions of tools. In processes where the internal pressure is low, the dimensions of the component reflect the dimensions of the die-cavity in the tool, but in processes where the internal pressure is high, die deflection in the tool causes incorrect shape of the final component. The dimensions of the die-cavity have to be corrected taking into account die deflection due to the high internal pressure. The modelling material technique is suitable for measuring internal pressure, but so far only a transducer to measure normal pressure has been available.