A modified impulsive force and pressure sensor intended for waveform reconstruction purposes

An Algorithm for the Input along a Davies’ Bar

“…Finally the procedure was repeated using the data drawn from Ueda and Umeda [13]. 2 In this case there is excellent agreement between the actual and reconstructed curves (Figure 4).…”

“…A mono-dimensional wavefront is assumed [1], with a plane surface [2], neglecting the presence of transverse waves [3]. The static gauge factor is transferred to dynamic situations [4].…”

“…The strain is usually measured with resistance strain gauges, the resistance variation being produced by the elastic compression wave which travels longitudinally along the bar. The theoretical model relies on several assumptions, currently considered valid.A mono-dimensional wavefront is assumed [1], with a plane surface [2], neglecting the presence of transverse waves [3]. The static gauge factor is transferred to dynamic situations [4].…”

Fiber Bragg grating impulsive pressure sensor

“…In measurements of impulsive pressure and force a sensor is commonly used, consisting of a cylindrical metal bar with strain gauges installed on it 1 . The measurand acts on one of the front faces of the bar, generates elastic stress (strain) waves, propagating inside the bar as longitudinal waves.…”