Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Zakaria El-Qoubaa"'
Autor:
Zakaria El-Qoubaa, Ramzi Othman
Publikováno v:
International Journal of Polymer Science, Vol 2015 (2015)
Polyetheretherketone (PEEK) is used in several engineering applications where it has to bear impact loads. Nevertheless, the tensile behavior has only been studied in the quasi-static range of loading rates. To address the lack of data in the impact
Externí odkaz:
https://doaj.org/article/aec4d147e50e4ace9f8cfc49c093a5c4
Publikováno v:
Journal of Natural Fibers, Vol 19, Iss 16, Pp 12982-12995 (2022)
For many engineering applications, especially in case of automobiles, natural fibers are a better replacement for artificially made fibers when it is reinforced as polymer composite materials. Here, banana fiber, a socio-economic natural fiber was us
Externí odkaz:
https://doaj.org/article/5dbb030a54b44d87977db79647a429dd
Publikováno v:
Journal of Polymer Engineering. 42:385-394
Due to environmental challenges, the demand for natural fibers (NFs) in biocomposites is expanding. Therefore, the study of the mechanical behavior of these natural fibers is increasingly requested. There is more than two thousands species of plant f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5d90b68f48cd14a9c5e7d47222fe095
https://doi.org/10.1515/polyeng-2021-0241
https://doi.org/10.1515/polyeng-2021-0241
Autor:
Zakaria El-Qoubaa, Ramzi Othman
Publikováno v:
Mechanics of Materials. 95:15-27
The yield stress of polyetheretherketone (PEEK) is investigated over a wide range of temperatures (from 143 to 473 K), covering the glass transition range, at three strain rates: 0.001, 0.1 and 5/s. This work completes a previous experimental work (E
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7511ffa160efa27132e3087d2a0ec5b8
https://doi.org/10.1016/j.mechmat.2015.12.008
https://doi.org/10.1016/j.mechmat.2015.12.008
Autor:
Ramzi Othman, Zakaria El-Qoubaa
Publikováno v:
Materials & Design (1980-2015). 66:336-345
Semi-crystalline polymers are increasingly used in structural applications where they can withstand dynamic loads. It is then, of highly importance, to measure and model their mechanical behavior over a wide range of strain rates. In this paper, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1847efe30f6d049f062798534b82d03d
https://doi.org/10.1016/j.matdes.2014.10.080
https://doi.org/10.1016/j.matdes.2014.10.080
Autor:
Ramzi Othman, Zakaria El-Qoubaa
Publikováno v:
The Journal of Strain Analysis for Engineering Design. 49:315-324
Although the understanding of volume change is of crucial importance to analyze and model the mechanical behavior of polymeric materials, it is highly understudied in the open literature. This article deals with the assessment of the volume change in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0fcc73481a395e77f9340b079545ecbf
https://doi.org/10.1177/0309324713515464
https://doi.org/10.1177/0309324713515464
Autor:
Zakaria El-Qoubaa, Ramzi Othman
Publikováno v:
International Journal of Applied Mechanics. :1750099
The polymer yield behavior is affected by temperature, strain rate and pressure. In this work, tensile yield stress of polyetheretherketone (PEEK) is characterized for temperature ranging between [Formula: see text] and [Formula: see text] ([Formula:
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acb1d70e35c7d2a797988225c78919c3
https://doi.org/10.1142/s1758825117500995
https://doi.org/10.1142/s1758825117500995