As the choice of additive manufacturing (AM) technologies is becoming wider with reliable processes and a range materials, selection right technology to fabricate certain product increasingly difficult from technical cost perspective. In this study polyether-ether-ketone cranial implants were manufactured by two AM techniques: powder bed fusion (PBF) fused filament fabrication (FFF) their dimen...

Functionally Graded Materials represent the next generation of engineering design for metal and plastic components. In this research, a specifically modified optimised 3D printer was used to manufacture functionally graded polyether ether ketone This paper details manufacturing methodologies in development capable producing materials through manipulation microstructure. The interaction individu...

The structure of a commercial sulfonated poly(ether ether ketone) (sPEEK) membrane was analyzed by Small-Angle X-Ray Scattering (SAXS) for different water uptakes obtained after immersion in liquid water at various temperatures. For low membrane swelling, the SAXS profile displays only a wide-angle peak in the 0.2-0.3 Å(-1) region. As the membrane swells, two supplementary correlation peaks ari...

Proton exchange membranes (PEMs) play an important role in the fuel cell systems. A good PEM must meet a series of requirements such as high proton conductivity, excellent mechanical strength and stability, chemical and electrochemical stability, low fuel crossover, etc. Nafion is currently the most commercially utilized electrolyte membranes for polymer electrolyte fuel cells, with high chemic...

Total limb amputation is quite common in small animals, although most of the indicated pathologies do not need such a restrictive procedure. Exo-endoprosthesis suggested alternative for enhancement biomechanical situation these patients. 3D printing internal part exo-endoprostheses polyether ether ketone (PEEK) evaluated. Two different shapes this part—one radius’ and other cylindrical medullar...

High strain loading response of high-performance aerospace grade polyether-ether-ketone (PEEK) and toughened epoxy carbon fibre-reinforced composites has been investigated in pre-impregnated laminates having identical fibre volume fraction, i.e. nearly 65%. Tensile cyclic tests have carried out on the with [±45°]8S stacking sequence, order to characterise inelastic (plasticity) parameters for t...

The degradation mechanism of hydrocarbon ion exchange membranes under vanadium flow battery (VFB) medium was investigated and clarified for the first time. This work will be highly beneficial for improving the chemical stability of hydrocarbon ion exchange membranes, which is one of the most challenging issues for VFB application.