Hybrid structure of metallic and elastomeric mechanical meta materials with high specific strength, superior thermal management and damping performances for space application in extreme environment.
Abstract
With the increasing demand for space and hypersonic vehicle application, there is an urgent need for advanced materials and structures that possess, exceptional mechanical properties and thermal management capabilities in extreme environment, and same time, lightweight and low cost. In this research proposal, we aim to develop a novel hybrid lattice structure with high strength-to-density ratio, superior thermal management properties, and excellent energy absorption capabilities in extreme environment. First, to achieve this, additive manufacturing will be employed, which allows for lightweight and rapid production of structures with complex functionality. The lattice structures will be designed and fabricated separately using two types of additive manufacturing techniques- digital light processing (DLP) and laser powder bed fusion (L-PBF) for an elastomeric material and metal alloy, respectively. Printing parameters will be optimized for each manufacturing process to produce defect-free and less heat-deformed parts. The hybrid lattice structure will include a load-bearing and energy-absorbing layer made of a metal and elastomeric lattice structure, respectively. Finally, the performance of the hybrid lattice structure will be evaluated under compression, bending, vibration, and thermal conductivity tests in various environments. The hybrid structures are expected to provide high specific strength and damping performance in extreme environment for the space and hypersonic vehicle application. Additionally, the coupled design approach of L-PBF material and structure can be widely used to overcome a challenge- trade-off between lightweight and high performances particularly for space application.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Feb 16, 2024
- Source ID
- FA23862314053
Entities
People
- Jonghwan Suhr
Organizations
- Air Force Office of Scientific Research
- Sungkyunkwan University
- United States Air Force