Fabrication and characterization of composite materials based on porous ceramic preform infiltrated by elastomer

Abstract

Abstract. The paper presents the experimental results of fabrication and characterization of ceramic-elastomer composites. They were obtained using pressure infiltration of porous ceramics by elastomer As a result the composites in which two phases are interpenetrating three-dimensionally and topologically throughout the microstructure were obtained. In order to enhance mechanical properties of preforms a high isostatic pressure method was utilized. The obtained ceramic preforms with porosity gradient within the range of 20-40% as well as composites were characterized by X-ray tomography. The effect of volume fraction of pores on residual porosity of composites was examined. These results are in accordance with SEM images which show the microstructure of composites without any delaminations and voids. Such composites exhibit a high initial strength with the ability to sustain large deformations due to combining the ceramic stiffness and rubbery elasticity of elastomer. Static compression tests for the obtained composites were carried out and the energy dissipated during compression was calculated as the area under the stress-strain curve. The dynamic behavior of the composite was investigated using the split Hopkinson pressure bar technique. It was found that ceramic-elastomer composites effectively dissipate the energy. Moreover, a ballistic test was carried out using armor piercing bullets.

Ceramic sponge Abrasive Waterjet (AWJ) precision cutting through a temporary filling procedure

“…[3], or to create composite materials by permanent infiltration as reported by Chabera et Al. [4] and Rashed et Al. [5].…”

Additive manufacturing of advanced ceramic materials

“…This is the fundamental reason why as-printed multi-material functional devices where ceramics act as structural materials are not currently feasible and may well never be. However, multi-material components can be manufactured by first 3D printing and firing the structural ceramic, followed by metal, polymer or ceramic infiltration [337,338,339], and AM deposition of additional materials onto ceramic components using either extrusion-based processes (DIW) or inkjet printing (DIP).…”

Practical Use of Composite Materials Used in Military Aircraft

“…The possibility of observing the structure of materials, in the range of magnification from 12.5 to 500 times, as well as easy archiving of the measurements, made [22][23][24][25][26][27][28][29][30].…”

“…Figures [24][25][26] show the diagrams of the tensions in the directions x, y and of the stretched sample, obtained by the finite element method in the SolidWorks program. The moulders were stretched with a longitudinal force of 1200 N. It can be seen in the diagrams, that when the reinforced fibers were added in the prepreg in the direction , the minimum tension value was 335.745 (Pa), and the maximum value was 676.717 (Pa).…”