Strong scatters and 1-D Born inversion

The 1-D born Inversion technique is well established as a method which gives defect radii from pulse-echo ultrasonic measurements. Recent developments have provided a robust sizing technique for weak scatterers that gives the diameter of a flaw from measurements in the Born Radius/Zero-of-Time Shift Domain (BR/ZOTSD) without the explicit need to select a correct zero-of-time for the inversion. The paper reports some aspects of the extension of this work to consider the sizing of strong scatterers such as spherical voids and inclusions