b'core-facing to rear-facing sides of themeasurement system that utilizesFigure 2. Simulated channel box bowing channel box. The goal of this work isan optical micrometer attached to aafter two HFIR cycles showing (top) to accurately characterize the geometryprecision stage. In addition, a digitallateral displacement UX (in m), with visual deformations artificially scaled by and surface profile of the specimensmicroscope was attached to the samea factor of 10, and (bottom left, middle, before and after irradiation to evaluatestage and used to record the preciseand right, respectively) normal stresses local deformations and overall lateralpositions of fine engraving marks that(in Pa) with visual deformations bowing and compare with valueswere etched along all faces of eachartificially scaled by a factor of 50predicted using high-fidelity modelingsample. This allows for determination and simulation. Surface profilom- of local strain in addition to macro-etry was performed using a customscopic dimensional changes.2021|AFC ACCOMPLISHMENTS 69'