The Characterization and Evaluation of Dimensional Stability for Highly Stable Composites

In this study, we explored the dimensional stability of high-performance carbon fiber reinforced plastics (CFRP) under regulated thermal conditions. This research systematically examined the interplay between temperature variations and structural response via experimental characterization and analytical calculation, establishing a methodology for assessing material properties in dynamic thermal environments. By associating the temperature stability threshold with nanoscale dimensional fluctuations within the low-frequency domain, this study enhances our comprehension of CFRP reliability in high-stability applications such as aerospace systems or optical instruments. The findings of this research suggest that the dimensional stability of the test specimens satisfies the fundamental standards for practical applications, and achieving dimensional stability exceeding 1nm/Hz<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1/2</sup>(0.005Hz~0.1Hz) through optimized thermal management is attainable. This offers actionable insights for material selection and design in domains necessitating extremely high dimensional precision, bridging the essential gap between the fundamentals of materials science and practical engineering requirements.