A Case-Study for Structural Health and Propellant Monitoring Technologies

Abstract

This paper results in recommendations for selecting solid propellant monitoring (SPM) and structural health monitoring (SHM) methods and provides a case-specific assessment of these methods based on a 2.75 inch diameter guided missile demonstrator. Assessment criteria are determined based on the performance requirements and significant modes of damage. Specific metrics (trade-study variables) are then defined to objectify the technology-specific assessment process and outcome. In addition, the weight of each metric is determined as it varies with the design requirements of the chosen transition platform. The assessment then results in a down-selection within the technologies, concluding with one or a group of candidates, from which an SPM or SHM method is recommended. It is recommended that the SHM and SPM method features a developed graphical user interface (GUI), no requirements for an expert eye, fail-safety, portable and integrated packaging, little to no disruption to current manufacturing methods, and has been proven for composite cases and fielded. For this study, a case-embedded microsensor is recommended for the SPM approach and a PZT sensors approach is recommended for the SHM approach.