Flexible Three-Dimensional Stress Sensor for Embedded Monitoring of Solid Rocket Propellant.

ABSTRACT: Solid rocket motors (SRMs) play a pivotal role in space exploration owing to their reliability and high thrust-to-weight ratios. SRM propellant health monitoring is in critical demand owing to the complex operational scenarios throughout the entire life cycle of SRMs. To achieve in situ detection of three-dimensional stress, this study introduces a novel flexible three-dimensional stress sensor (FSS). First, a liquid metal pressure-sensing element with a variable cross-section was designed and numerically modeled. The performance of the FSS under different loading conditions was analyzed using finite element modeling. The sensing element prototype was fabricated using mold casting and liquid metal injection methods. The fabricated sensing-element prototype with an area ratio of 1:5 exhibit

SUBMITTER: Shi Y 

PROVIDER: S-EPMC12843877 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature