Title: Integration of Microvascular Networks for Multifunctionality in Extreme-Environment Composites

Authors: Joshua Tucker, Ajit Kelkar, Mookesh Dhanasar, Vishwas Jadhav

DOI:

Abstract: Microvascular channel networks embedded within composite materials provide a pathway toward multifunctional structural systems capable of active thermal management, damage detection, and self-healing. In this work, a practical sacrificial-filament processing approach is demonstrated for integrating continuous microvascular channels within carbon fiber reinforced epoxy laminates. Polylactic acid (PLA) filaments were embedded at the laminate mid-plane during layup and subsequently removed through a controlled thermal evacuation process combining vacuum extraction with a post-evacuation pressure purge to ensure channel continuity. Mechanical performance of the resulting microvascular laminates was evaluated and compared to neat laminates using tensile, compressive, flexural, and short beam shear testing. Results show that stiffness-dominated properties were largely retained, while strength-dominated properties exhibited greater reductions, particularly under compressive loading. Failure mode analysis indicated predictable damage initiation at channel locations under compressive and interlaminar stresses. The results demonstrate that continuous microvascular channels can be integrated using scalable composite processing methods with quantifiable and manageable mechanical trade-offs.

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Conference: SAMPE 2026

Publication Date: 2026/04/27

SKU: 102

Pages: 15

Price: $30.00