The long-term mechanical integrity of non-reinforced PEEK-OPTIMA polymer for demanding spinal applications: experimental and finite-element analysis [PDF]
, 2018 Polyetheretherketone (PEEK) is a novel polymer with potential advantages for its use in demanding orthopaedic applications (e.g. intervertebral cages). However, the influence of a physiological environment on the mechanical stability of PEEK has not been
Ferguson, Stephen +2 more
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Complex stamp forming of advanced thermoplastic composites [PDF]
, 2011 The inherent advantages of thermoplastics over the traditional thermoset composite systems are well recognized in the aeronautics community. The main advantages are the much faster processing and the higher toughness.
Akkerman, R. +3 more
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Microwave Photoelasticity: A Resonant Wavelength Approach Applied to PEEK Polymer [PDF]
Every nondestructive testing (NDT) technique has its unique set of advantages and limitations. Currently, the only existing noncontact NDT method capable of measuring sub-surface stresses, in optically opaque materials, at near-real-time speeds and over ...
Schemmel, Peter J., Waldstein, Seth W.
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Research Progress of 3D-Printed Polyetheretherketone in Implantable Medical Devices
Zhongguo yiliao qixie zazhiPolyetheretherketone (PEEK) has emerged as a thermoplastic material of choice in the realm of implantable medical devices, owing to its high biocompatibility and exceptional mechanical strength.
Shangda ZHANG
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Micromechanics of composite laminate compression failure [PDF]
The Dugdale analysis for metals loaded in tension was adapted to model the failure of notched composite laminates loaded in compression. Compression testing details, MTS alignment verification, and equipment needs were resolved.
Bradley, Walter L., Guynn, E. Gail
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Size, shape and flow of powders for use in Selective Laser Sintering (SLS) [PDF]
, 2014 6th International Conference on Advanced Research in Virtual and Rapid Prototyping, Leiria, Portugal, 1-5 October 2013This paper investigates the effects of particles size and morphology on flowability of a range of polymeric powders (SLS and non-SLS ...
Anderson, A. +4 more
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Experimental Evaluation of Wear Resistance of Polymer Materials Used in Piston Compressor Equipment
Механика машин, механизмов и материаловA new method is proposed for assessing the wear resistance of polymer materials according to the “finger — disk” friction scheme. It involves changing the geometry of the friction zone of polymer samples — the “finger” sphere is replaced by a truncated ...
Aleksey S. Brundukov +1 more
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Etiology and Surgical Management of Cervical Spinal Epidural Abscess (SEA):: A Systematic Review. [PDF]
, 2018 Study Design: Systematic analysis and review. Objective: Evaluation of the presentation, etiology, management strategies (including both surgical and nonsurgical options), and neurological functional outcomes in patients with cervical spinal epidural ...
, +7 more
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Towards a process simulation tool for the laseer assisted tape placement process [PDF]
, 2010 A combined optical and thermal model for the laser assisted tape placement process is presented. The optical model adopts a ray tracing procedure, based on the Fresnel equations, to predict the incident heat flux on the tape and substrate near the nip ...
Akkerman, R. +2 more
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Flame-retardant composite materials [PDF]
The properties of eight different graphite composite panels fabricated using four different resin matrices and two types of graphite reinforcement are described. The resin matrices included: VPSP/BMI, a blend of vinylpolystyryl pyridine and bismaleimide;
Kourtides, Demetrius A.
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