Temat: composite fibers - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Estimation of diagnostics of fibers failure in composite materials by the method of acoustic emission
Autorzy:: Skalsky, V.
Serhiyenko, O.
Rudavskyy, D.
Matviyiv, Y.
Powiązania:: https://bibliotekanauki.pl/articles/387211.pdf
Data publikacji:: 2009
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: emisja akustyczna
kompozyt
włókna
acoustic emission (AE) signal
composite materials
fibers
Opis:: The model of acoustic emission caused by formation of penny-shaped cracks in fiber composite materials taking into account stress relaxation in breaking fibers is proposed. It is found that the maximal values of components of displacement vector are directly proportional to the total area of defect, which is formed, and inverse proportional to the relaxation time.
Źródło:: Acta Mechanica et Automatica; 2009, 3, 4; 65-68
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Improvement of the Mechanical Behavior of Composite Materials with Different Binders Based on Local Plant Fibers Alfa and Diss
Autorzy:: Belkhir, Zohra
Merzoud, Mouloud
Powiązania:: https://bibliotekanauki.pl/articles/2051547.pdf
Data publikacji:: 2021
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: composite materials
mechanical properties
natural fibers
Alfa
Diss
cement
clay
materiały kompozytowe
właściwości mechaniczne
włókna naturalne
glina
Opis:: Concerned about the environmental and economic impact, composite materials are increasingly used in the construction sector. Indeed, the use of plant fibers as reinforcement in construction materials have been the subject of several researches in recent years; the main motivation is the weight gain combined with high mechanical characteristics. The objective of this research concerns the study of the physicomechanical properties of composite materials with cement and clay matrices reinforced with Alfa and Diss fibers with dimensions ranging from 2 to 8 cm. This involves evaluating the performance of these materials according to the formulation, for a volume ratio (Alfa or Diss / Matrix fibers equal to 4), using dry fibers and pre-wetted fibers. The study of the mechanical properties showed a drop of the performance for both compression and bending strength compared to the reference material without adding fibers (cement or clay paste). It should be noted that the best mechanical performance is obtained for the case of composites materials with cementitious matrix with pre-wetted fibers. On the other hand, in the case of composites with clayey matrices, pre-wetting does not improve the mechanical characteristics. It is also noted that the best dimensions of fibers which improve the mechanical characteristics in bending are generally 6 cm for composites with a clay matrix and between 2 and 4 cm for cementitious composites. In all cases, the fibers in composite materials with cement or clay matrix create a bridging effect, making it possible to limit the progression of cracks during loading. This phenomenon gives to the various composite materials a ductile behavior.
Źródło:: Civil and Environmental Engineering Reports; 2021, 31, 4; 130-147
2080-5187
2450-8594
Pojawia się w:: Civil and Environmental Engineering Reports
Dostawca treści:: Biblioteka Nauki

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