Wszystkie pola: GFRP composite - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Influence of drill bit material on the bearing strength of holes in GFRP composite
Autorzy:: Galińska, Anna
Powiązania:: https://bibliotekanauki.pl/articles/27309886.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: fibre reinforced composites
drilling
bolted joining
bearing strength
delamination
kompozyty wzmocnione włóknami
wiercenie
łączenie śrubowe
wytrzymałość nośna
rozwarstwienie
Opis:: The article aims at assessing the influence of the drill bit material on the bearing strength of holes made in glass fabric reinforced epoxy composite. Six twists made of widely used drill materials such as high speed steels and carbides in different configurations were selected to drill holes in the composite. In the first stage of the work, optimum drilling parameters were selected and then used for drilling holes in specimens tested in single lap shear experiments. For each tested specimen two different delamination factors, one based on the delamination area and another - on its diameter, were calculated in order to assess the quality of the holes and then compared to the results of the bearing strength experiments. The results of the bearing tests showed that the highest strength was achieved for the high speed steel drill with titanium coating while the lowest for the cemented carbide drill. This finding is in opposition to the majority of results reported in literature.
Źródło:: Archive of Mechanical Engineering; 2023, LXX, 2; 287--310
0004-0738
Pojawia się w:: Archive of Mechanical Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Mathematical modelling and simulation of delamination crack growth in Glass Fiber Reinforced Plastic (GFRP) composite laminates
Autorzy:: Ijaz, Hassan
Powiązania:: https://bibliotekanauki.pl/articles/280419.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: finite element analysis
GFRP
damage mechanics
non-local
fatigue
delamination
Opis:: Delamination crack growth is a major source of failure in composite laminates under static and fatigue loading conditions. In the present study, damage mechanics based failure models for both static and fatigue loadings are evaluated via UMAT subroutine to study the delamination crack growth phenomenon in Glass Fiber Reinforced Plastic (GFRP) composite laminates. A static local damage model proposed by Allix and Ladev`eze is modified to an non-local damage model in order to simulate the crack growth behavior due to static loading. Next, the same classical damage model is modified to simulate fatigue delamination crack growth. The finite element analysis results obtained by the proposed models are successfully compared with the available experimental data on the delamination crack growth for GFRP composite laminates.
Źródło:: Journal of Theoretical and Applied Mechanics; 2019, 57, 1; 17-26
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Machining of Composite Materials by Ultrasonic Assistance
Autorzy:: Marcel, Kuruc
Powiązania:: https://bibliotekanauki.pl/articles/102041.pdf
Data publikacji:: 2020
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: ultrasonic assisted milling
CFRP
GFRP
delamination
frezowanie wspomagane ultradźwiękami
delaminacja
Opis:: A lot of studies are focused on decreasing the weight of the manufactured components and increasing their mechanical properties or achieving additional unique properties. One of the results of their effort is a composite material. This kind of material consists of two phases – matrix and reinforcing phase. This unique combination of phases causes the superior properties of the composite material. However, since the material properties of the matrix differ from the material properties of the reinforcing material, certain difficulties during machining are caused. These difficulties include: delamination of the machined composite and reduced tool life. Those facts motivate other studies to investigate the machinability of the composite materials. A few possibilities on how to improve the machining process during the machining of composite materials were described. For example, Seco Tools Company started with developing a new shape of the cutting tools; DMG Mori Company successfully implemented the assistance of the ultrasound into the milling process and therefore achieved the enhanced machinability od the materials; the scientists from the Stan-ford University developed a diamond-like carbon (DLC) coating, which is available to satisfactory cut the reinforcing fibres as well as the soft matrix. This article compared the ultrasonic-assisted face milling of the carbon fibre reinforced plastic (CFRP) and glass fibre reinforced plastic (GFRP) by a unique shaped milling cutter. Delamination of those composite materials during the milling process was observed via 3D digitization devices. The results of the research could be applied to determine how a fibre material can affect the ultrasonic assistance during the milling process. Lower delamination during machining of GFRP was achieved; however, lower surface roughness was obtained during the machining of CFRP.
Źródło:: Advances in Science and Technology. Research Journal; 2020, 14, 2; 140-144
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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