Results 41 to 50 of about 3,071 (184)

Avaliações térmica e reológica da matriz termoplástica PEKK utilizada em compósitos aeronáuticos Thermal and rheological evaluation of PEKK thermoplastic matrix for aeronautical application

Polímeros, 2008
A matriz termoplástica semicristalina PEKK (poli (éter-cetona-cetona)) tem recebido nos últimos anos uma atenção crescente pelas indústrias aeronáutica e espacial, no processamento de compósitos poliméricos avançados.
Rogério L. Mazur, Edson C. Botelho, Michelle L. Costa, Mirabel C. Rezende   +3 more
doaj   +1 more source

Poly ether keton keton polymer deposition on laser surface structured commercial pure titanium using magnetron sputtering

Brazilian Dental Science
Objective: This study aimed to evaluate the effect of coating titanium (Ti) dental implant with polyether ketone ketone (PEKK) polymer using magnetron sputtering on osseointegration, trying to overcome some of the problems associated with Ti alloys ...
Aseel Mohammed Al-Khafaji , Moamin I. Issa, Fatimah J. Ismael , Thekra Ismael Hamad , Hikmat J. Aljudy   +4 more
doaj   +1 more source

Clinical Performance of Immediately Restored, Surface Modified Two-Piece Zirconia Implants. A Prospective Case Series. [PDF]

Clin Oral Implants Res
ABSTRACT Purpose To evaluate the short‐term success and survival rates of immediately restored surface modified two‐piece zirconia implants (CL). Material and Methods A total of 23 patients had received CL implants (n = 26) for single‐tooth replacements in the anterior and posterior maxilla and mandible at healed extraction sites.
Trimpou G, Begić A, Obreja K, Montada A, Parvini P, Schwarz F.   +5 more
europepmc   +2 more sources

Laser transmission welding as an assembling process for high temperature electronic packaging. [PDF]

, 2016
Higher efficiency, power density, reliability and longer lifetime of power electronic devices would stem from progresses in material science. In this work, we propose to use a high performance thermoplastic polymer PAEK as packaging box to extend the ...
Chabert, France, Cussac, Philippe, Diez, Juan Carlos, Duchesne, Cyrille, Garnier, Christian, Madre, Maria A., Nassiet, Valérie, Sotelo, Andres, Villar, Miguel   +8 more
core   +2 more sources

Effects of concentrated sulfuric acid etching durations on the shear bond strength between polyether-ketone-ketone and dentin

口腔疾病防治, 2021
Objective To study the effects of different concentrated sulfuric acid etching durations on the shear bond strength between polyether-ketone-ketone (PEKK) and dentin, providing a scientific basis for the clinical bonding procedures of PEKK prosthesis ...
WANG Chenwei, SUN Fangfang, YANG Chuncheng, DING Ling, CHEN Xi, ZHANG Jiaqi, WU Guofeng   +6 more
doaj   +1 more source

Modelling the crush behaviour of thermoplastic composites [PDF]

, 2016
Thermoplastic composites are likely to emerge as the preferred solution for meeting the high-volume production demands of passenger road vehicles. Substantial effort is currently being directed towards the development of new modelling techniques to ...
Falzon, Brian G., Tan, Wei
core   +1 more source

Effect of Consolidation Time in Hot Press Compression Molding of Continuous Carbon Fiber‐Reinforced Polyetheretherketone Composite

Polymer Composites, EarlyView.
Influence of consolidation time on interlaminar shear strength and void content after hot press consolidation and vacuum bag only processes. ABSTRACT Processing long fiber reinforced thermoplastic composites such as polyaryletherketones with carbon fibers (CF/PEEK) has found interest in the aerospace industry due to short‐time manufacturing and ...
Adrian Korycki, Fabrice Carassus, Christian Garnier, France Chabert, Toufik Djilali   +4 more
wiley   +1 more source

Biomechanics of the implant‐supported full arch fixed complete denture manufactured by milling and injection techniques: An experimental and FEA study

Journal of Prosthodontics, EarlyView.
Abstract Purpose This study aims to characterize the mechanical properties of implant‐supported full arch fixed complete dentures manufactured by milling and injection techniques. Materials and Methods Twenty‐two samples with milling and injection manufacturing techniques were fabricated.
Mustafa Gürkan, Ovul Kumbuloglu, Makbule Heval Şahan, Mert Narin, Halis Kandaş, Yusuf Arman, Hasan Yildiz, Mahmut Pekedis   +7 more
wiley   +1 more source

Microstructural and micromechanical property characterisation of CF/PEKK composites using nanoindentation

Materials & Design, 2023
The present work seeks to characterise the micromechanical properties of carbon fibre/poly(etherketoneketone) (CF/PEKK) composites with different crystallinity levels and morphologies.
Helena Pérez-Martín, Paul Mackenzie, Alex Baidak, Conchúr M. Ó Brádaigh, Dipa Ray   +4 more
doaj   +1 more source

A Randomized Sublinear Time Parallel GCD Algorithm for the EREW PRAM [PDF]

, 2010
We present a randomized parallel algorithm that computes the greatest common divisor of two integers of n bits in length with probability 1-o(1) that takes O(n loglog n / log n) expected time using n^{6+\epsilon} processors on the EREW PRAM parallel ...
Bach, Beame, Bernstein, Borodin, Chor, Crandall, Davida, Greenlaw, Hildebrand, Jonathan P. Sorenson, Kannan, Karp, Meyer Eikenberry, Parsell, Purdom, Schönhage, Sedjelmaci, Sedjelmaci, Sedjelmaci, Sedjelmaci, Sorenson, Sorenson, Tenenbaum   +22 more
core   +3 more sources