Novel magnetostrictive curvature sensor employing flexible, figure-of-eight coils

A curvature sensor was designed and consists of the figure-of-eight coil along with the magnetostrictive material Metglas 2605SA1. The sensor was incorporated in an oscillator circuit, where curvature induced stress within the material changes the amplitude and the frequency of the output signal of the circuit. The output signal of the circuit was measured by an oscilloscope and the readings were recorded. The data comprises: linear change in sensor length produced by sensor curvature; angle between tangents to sensor end points resulting from sensor curvature; circuit frequency; oscillating-signal amplitude. Also given are mean absolute deviation and mean absolute percentage error.