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Fused Filament Fabrication Of Ceramic Matrix Composite Preforms Via Thermo-Oxidative Stabilization Of Polyetheretherketone, Samuel Pankratz
Fused Filament Fabrication Of Ceramic Matrix Composite Preforms Via Thermo-Oxidative Stabilization Of Polyetheretherketone, Samuel Pankratz
Masters Theses
Carbon-fiber-reinforced ceramic matrix composites (CMCs) are frequently used in applications where high thermo-mechanical loads are induced along with weight limitations. The first step of producing the fibrous preform allows the near-net shape of the final part to be formed with fibers placed in the desired orientation, typically relying on traditional polymer matrix composite (PMC) manufacturing methods. Recent work has demonstrated a new method to produce discontinuous fiber preforms through various forms of additive manufacturing including fused filament fabrication (FFF). This work uses Polyetheretherketone with carbon fibers (CF PEEK) for additive manufacturing of the carbon-rich polymer precursor. Critically, thermoplastic precursor materials …
Interlaminar Shear Performance Of High Temperature Composites, Tyler A. Wallis
Interlaminar Shear Performance Of High Temperature Composites, Tyler A. Wallis
Theses and Dissertations
Interlaminar shear properties of a high temperature polymer matrix composite (HTPMC) and a ceramic matrix composite (CMC) were evaluated at elevated tempera- ture. Two variants of the HTPMC were studied. Both consisted of a high-temperature polyimide (AFR-PE-4) matrix reinforced with Astroquartz-III pre-impregnated glass fabric woven in an eight-harness-satin weave. The first HTPMC variant also contained stainless steel foil at the midplane, while the second HTPMC variant did not. The interlaminar shear strength (ILSS) of both variants of the HTPMC was evaluated at 204°C in laboratory air. The addition of the stainless steel foil resulted in significant loss of ILSS for …