Results 61 to 70 of about 1,763 (165)

Stereomicroscope-Based in Vitro Study Evaluating the Marginal and Internal Fit of PEEK and PEKK Crowns

Journal of Pharmacy and Bioallied Sciences
PurposeThe aim of the in vitro study was to compare the internal merge and marginal perfection of polyetheretherketone (PEEK) and polyetherketoneketone (PEKK) crowns under a stereomicroscope.
Chandramohan Giri, Soundar Joephin, Shankar Kamala, Missier Mary Sheloni, Hines Allen Jim   +4 more
doaj   +1 more source

Investigation of color and physicomechanical properties of peek and pekk after storage in a different medium

Scientific Reports
The aim of this study is to assess color stability, solubility, and water sorption on polyether ether ketone (PEEK) and polyether ketone ketone (PEKK) after immersion in different storage conditions. Material and Methods Ninety disc-shaped specimens (8 × 
Nihan Kaya, Rafat Sasany, Nuran Yanıkoglu, Busra Tosun   +3 more
doaj   +1 more source

Complex Test Scenarios for Functional Validation Prior to Type Approval

Future Transportation
The continuous tightening of European regulatory requirements, particularly under the General Safety Regulation (GSR), has considerably increased the scope and cost of proving ground testing required for the validation of Advanced Driver Assistance ...
Balint Toth, Leticia Pekk
doaj   +1 more source

Optimisation du comportement mécanique de composites structuraux PEKK/Fibres de carbone par ensimage oligomères de PEKK [PDF]

, 2017
L'objectif de cette recherche est la conception et l'analyse d'un ensimage pour composites structuraux PEKK/Fibres de carbone (FC) continues. Les oligomères de PEKK (oPEKK) ont été synthétisés en laboratoire pour définir les caractéristiques physico ...
Alexandre, Mike Abidine
core  

Mechanical performances of PEKK thermoplastic composites linked to their processing parameters

, 2017
Poly(ether-ketone-ketone) (PEKK) high performance thermoplastics are currently studied with a great interest by the aeronautic industry as matrix for carbon fiber reinforced structural parts.
Choupin, Tanguy
core   +2 more sources

Predavanje Pekke Kettunena

Hrvatska i komparativna javna uprava, 2013
U radu se opisuje predavanje prof. Kettunena na temu nanovijih reformi lokalne samouprave u Finskoj iz komparativne perspektive.
openaire   +2 more sources

Experimental verification of PEKK stiffened panel under compression

Journal of Physics: Conference Series
Abstract The paper presents the experimental strain and stress analysis of a thermoplastic composite stiffened panel subjected to compression load. The panel has five stringers with a non-symmetric design. Two panels are investigated.
Růžek, Roman, Karkulín, Adam, Mlch, Ivan, Mrňa, Tomáš, Sedek, Jakub   +4 more
openaire   +2 more sources

Fabrication of the polyetherketoneketone-reinforced nano-hydroxyapatite composites as inspired by the cortical bone

Supramolecular Materials
Cortical bone has superior mechanical performance. Hydroxyapatite (HA) as its main component are attractive bioactive materials, but possess weak strength. The critical factor is the difference in the structure.
Zhongyi Wang, Yadong Zhang, Junyi Zhao, Chenyang Xie, Qiang Wei, Haiyang Yu   +5 more
doaj   +1 more source

Custom and prefabricated PolyEtherKetoneKetone (PEKK) post‐core systems bond strength: Scanning electron microscopy evaluation

, 2020
The present study evaluated the bond strengths of prefabricated PolyEtherKetoneKetone (PEKK) posts, PEKK posts custom-configured according to root-canal size, and conventional fiber posts. A total of 30 maxillary incisors were randomly divided into three
Melahat Çelik Güven, Mumcu, Emre, Yildirim, Gulhan, Süleyman Çağatay Dayan, DAYAN, Süleyman Çağatay, Emre Mumcu, Gülhan Yıldırım, Guven, Melahat Celik   +7 more
core   +1 more source

Experimental and numerical analysis of woven S-glass fibre/PEKK laminates subjected to low velocity impact at different locations

Polymer Testing
High-performance composites based on Poly-ether-ketone-ketone (PEKK) have exhibited an exceptional impact resistance. However, update there is hardly any work focused on investigating the off-centre impact response of these composites.
Nassier A. Nassir, Pouria B. Ataabadi, R.S. Birch, W.J. Cantwell, J. Zhou, Z.W. Guan   +5 more
doaj   +1 more source