Impact Response of a Randomly Oriented Fiber Foam Core Sandwich Panel

Buenrostro, Ezequiel; Whisler, Daniel

doi:10.12783/asc2017/15274

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“…Lot of work related with sandwich beam have been done on the failure modes and deformation prediction under impact loads and many of these works have been summarised in detailed. [13][14][15][16][17][18][19][20] Buenrostro and Whisler 13 studied impact response of a low-cost randomly oriented fibre foam core sandwich panel. Their study explored different manufacturing techniques for the threedimensional fibre-reinforced foam core to provide a proof of concept for a low-cost and easily repeatable method comprised of readily available materials.…”

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confidence: 99%

The response of pin-clamped carbon fibre-reinforced plastics composite sandwich beams with polyvinylchloride foam core under bending impact

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2020

Journal of Reinforced Plastics and Composites

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The dynamic response of pin-clamped composite sandwich beam in terms of face-sheet effect with polyvinylchloride foam core subjected to bending impact loading was investigated in this paper. Composite sandwich beams with three different unidirectional skin layups of [0]4, [45]4 and [90]4 and two types of face-sheet thickness of 1 ([0]4) and 2 ([0]8) mm were fabricated. An explicit code, VUMAT, is written and implemented in ABAQUS/Explicit. The micro-computerised tomography scanning was used to detect adhesive layer failure. The ply angle orientation of face sheets plays an important role in the failure mechanism of the sandwich beam under bending loads. Although it is known that the fibre angle in the direction perpendicular to the bending direction is more stiff and strength, damage tolerances under bending impact loads of beams with other fibre angles were determined. In addition, as the number of layers increased, failure mechanism and load-carrying capacity of composite face sheets changed completely for increasing bending stiffness. This research provides fundamental information about the change of the failure mechanisms as the fibre angle and thickness of the face sheet were changed and in terms of interpretation with the help of finite elements using different failure criteria.

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