The influence of firing procedures on strain sensitivity of thick-film resistors

Firing variables and strain sensitivity of Bi2Ru2O7 thick resistive films

“…In order to provide accurate and semi-real-time information about performances and conditions of various civil engineering structures (buildings, bridges, roads, etc.) thick resistive films are being used as strain sensors because of their good strain sensitivity, stability, reliability and low manufacturing costs [1][2][3]. Since thick-film strain sensors for structural health monitoring are usually deployed on primary locations, such as columns, walls and ceilings of a building, research efforts have been directed to determining factors that can affect the gauge factor as the key parameter when strain sensors are in question.…”

“…Having in mind that the key process in formation of these complex structures is the firing process, several authors investigated influence of firing procedure on strain sensitivity of thick resistive films [3,8]. In [3] thick-film resistors with various RuO 2 concentrations were fired through different firing procedures and relationship between sheet resistivity and gage factor was investigated using model where conductive chains that form the resistor were made of n resistors in series. In [8] authors determined conductive phase and investigated microstructure of the resistor using two types of X-ray analysis and both scanning and transmission electron microscopy.…”