Abstract
This paper presents experimental results of both quasi-static compression and low-velocity impact behavior for tri-axial bio-composite structural panels using a spherical load head. Panels were made having different core and face configurations. The results showed that panels made having either carbon fiber fabric composite faces or a foam-filled core had significantly improved impact and compressive performance over panels without either. Different localized impact responses were observed based on the location of the compression or impact relative to the tri-axial structural core; the core with a smaller structural element had better impact performance. Furthermore, during the early contact phase for both quasi-static compression and low-velocity impact tests, the panels with the same configuration had similar load-displacement responses. The experimental results show basic compression data could be used for the future design and optimization of tri-axial bio-composite structural panels for potential impact applications.
Highlights
Structural composite panels are generally assembled using two stiff faces bonded to a lightweight structural core
This composite face material was tested along the machine direction (MD) and cross-machine direction (CD)
0.48 a Carbon fiber fabric bonded with laminated paper composite; b MD: machine direction;c CD: cross direction
Summary
Structural composite panels are generally assembled using two stiff faces bonded to a lightweight structural core. Performed low-velocity impact tests on sandwich structures with carbon fabric/epoxy. They analyzed impact dynamic behavior laminates faces andand polyurethane foam core material [9].[9]. A phenolic laminated paper made from wood fibers was used for the tri-axial interlocked core and faces of a sandwich panel. The results showed that these structural panels have thethe potential to provide good mechanical performance for various engineering applications. This paper investigates the impact behavior of wood-fiber-based tri-axial core composite sandwich panels with different core/face configurations using quasi-static compression tests and lowpanels with different core/face configurations using quasi-static compression tests and low-velocity velocity impact tests. The energy absorptions and contact loads of panels were analyzed through different differentdesign materials, design configurations, and test parameters.
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