Results 261 to 270 of about 16,820 (310)

Wear and rolling contact fatigue of PEEK and PEEK composites

Tribology International, 2013
Abstract Wear and rolling contact fatigue were investigated on unfilled PEEK and on three PEEK short fiber reinforced composites. For this aim, roller-shaped specimens were subjected to rolling contact tests at different contact pressure levels. Wear rate- pv product and contact pressure-life diagrams were obtained, depending on material hardness ...
Andrea Avanzini, Candida Petrogalli
exaly   +2 more sources

The crystallinity of PEEK composites

Polymer, 1993
Abstract Measurement of the degree of crystallinity of the polymer matrix in a composite is complicated by the presence of the reinforcing additive. This is particularly the case in poly(ether ether ketone) carbon fibre composite, APC-2, which may contain as much as 70% carbon fibre.
A.A. Mehmet-Alkan, J.N. Hay
openaire   +1 more source

Characterization and modeling of nonlinear viscoelastic response of PEEK resin and PEEK composites [PDF]

Composites Engineering, 1994
Abstract The viscoelastic properties of PEEK resin and unidirectional PEEK composite APC-2 were characterized by an accelerated testing procedure based on the time-temperature and time-stress superposition principles. The results obtained by creep and recovery tests are presented, and the constitutive modeling of the nonlinear viscoelastic response ...
Xiao, Xinran X.R., Hiel, Clement C.C., Cardon, Albert   +2 more
openaire   +1 more source

Optimization of the Ultrasonic Welding of PEEK-Carbon Composites

Journal of Reinforced Plastics and Composites, 1996
The ultrasonic welding of PEEK-carbon composites was studied in order to better understand the process and determine the optimum welding conditions. The parameters varied were the applied pressure and the welding time. The optimum applied pressure at the horn-sample interface was found to be 3.8 MPa.
B. Harras, K. C. Cole, T. Vu-Khanh
openaire   +1 more source

Effect of lubrication on tribological properties of PEEK and PEEK composites [PDF]

, 2022
Polymers and polymer-based composites are becoming the preferred materials in many tribological applications due to their advantages such as lightweight, reduced noise and self-lubricating properties. In terms of green technology, reducing weight by replacing metallic parts for polymeric ones is a very promising way to improve fuel efficiency in the ...
openaire  

Interface morphology of carbon fibre/PEEK composites

Journal of Materials Science, 1990
The morphology of high-performance thermoplastic composites (APC-2) based on continuous carbon fibres embedded in a poly-ether-ether-ketone matrix is studied by means of scanning electron microscopy. Samples with different degrees of crystallinity obtained using different thermal treatments are investigated.
SAIELLO S., KENNY, Jose Maria, NICOLAIS L.   +2 more
openaire   +2 more sources

Viscoelastic effects in poly(ether ether ketone) (PEEK) and PEEK-based composites

Composites Science and Technology, 1991
Abstract Viscoelastic effects occuring in amorphous and semicrystalline poly (ether ether ketone) (PEEK) and in a PEEK-based composite (APC2) have been analyzed by means of transient (creep) and dynamic mechanical tests, in the range of temperature covering the main viscoelastic regions.
D'AMORE, Alberto, A. POMPO, L. NICOLAIS
openaire   +2 more sources

Comparison of methods for thermal analysis: Application to PEEK and a composite PEEK+CF

Journal of Fire Sciences, 2015
This article applies and critically compares essentially all methods (based on Arrhenius temperature dependence and power law reduced mass) to deduce the degradation parameters of polyether ether ketone (PEEK) and its carbon fibre composites, PEEK+CF, from thermogravimetric analysis experiments in nitrogen.
Florian Hache, Michael Delichatsios, Talal Fateh, Jianping Zhang   +3 more
openaire   +1 more source

MACHINABILITY STUDY OF CARBON/PEEK COMPOSITES

Machining Science and Technology, 1999
Abstract Composites are generally fabricated to near nett-shape, however, there is often a need to conduct some additional machining operations such as trimming of the edges. High tool wear and the need for good surface finish are some of the major concerns in machining.
Rahman, M., Ramakrishna, S., Thoo, H.C.
openaire   +1 more source