Application of resistive ladder sensor for detection and quantification of fatigue cracks in aircraft structure
Artur Kurnyta · Pomiary, Automatyka, Robotyka · 2013
The paper presents preliminary laboratory verification of resistive ladder sensor application. The sensor, which is akin to foil strain gage, can be used for detection and length quantification of fatigue cracks. Special measurement circuit for data acquisition was developed and test specimens were prepared. Afterwards, laboratory tests on fatigue-testing machine were elaborated to explore utility and reliability of proposed method for crack detection. After analysis of acquired data, some observation and conclusion were drawn, especially about electronic circuit. Modifications in measurement system were described and simulated in Micro-Cap – an electronic circuit analysis program. The paper is concluded with summary from laboratory tests and