Results 11 to 20 of about 20,352 (256)

Flexural Properties of Functionally Graded Polymer Alumina Nanoparticles [PDF]

open access: yesEngineering and Technology Journal, 2021
In this paper, a functionally graded polymer nanocomposite (FGPNC) was arranged via mixing the Alumina (Al2O3) nanoparticles (50 – 100 nm) with an epoxy matrix through five layers of 1.2 mm thickness for each layer using hand lay–up technique.
Mahdi Shareef   +2 more
doaj   +1 more source

Influence of Fiber Volume and Fiber Length on Thermal and Flexural Properties of a Hybrid Natural Polymer Composite Prepared with Banana Stem, Pineapple Leaf, and S-Glass

open access: yesAdvances in Materials Science and Engineering, 2021
There is more demand for natural fiber-reinforced composites in the energy sector, and their impact on the environment is almost zero. Natural fiber has plenty of advantages, such as easy recycling and degrading property, low density, and low price ...
K. B. Prakash   +7 more
doaj   +1 more source

Nondestructive evaluation of dynamic properties in beach wood using free vibration method on free- free bar [PDF]

open access: yesتحقیقات علوم چوب و کاغذ ایران, 2014
In this study effect of different NDT methods on dynamic properties in beech wood (flexural vibration and longitudinal vibration method) were evaluated .29 clear samples with nominal dimension of 2×4×36 cm selected and bending vibration in free-free ...
mostafa kohantorabi   +2 more
doaj   +1 more source

Hemp From Disordered Lines for New Staple Fibre Yarns and High-Performance Composite Applications

open access: yesFrontiers in Materials, 2022
The use of natural fibre-reinforced plastics for higher-stressed applications is currently often limited by the high price of high-quality semi-finished products.
Nina Graupner   +9 more
doaj   +1 more source

Displacement rate effect on the flexural properties of glass fiber reinforced polyurethane [PDF]

open access: yesMaterials Research, 2016
The object of this study was to evaluate the flexural strength of glass fiber reinforced polyurethane composites under variable displacement rates. Flexural tests have been conducted at a range of displacement rates included 0.2, 2, 20, 100, 200, 1000 mm/
João Marciano Laredo dos Reis
doaj   +2 more sources

Flexural Performance of Emulsified-Asphalt-Modified ECC for Expansion Joint Use

open access: yesAdvances in Civil Engineering, 2021
The concrete transition zone plays an important role in bridge expansion joint structure, which provides a good connection between the expansion joint installation and bridge decks.
Quan Mao, Zhigang Zhang, Hui Ma
doaj   +1 more source

Comprehensive analysis of mechanical properties of microcellular polypropylene: Experiment and simulation

open access: yesPolymer Testing, 2022
A series of microcellular polypropylene (PP) with different bubble size and expansion ratio were prepared by supercritical CO2 moulding compression foaming, and their compressive, flexural and tensile properties were measured. A comprehensive calculation
Yichong Chen   +7 more
doaj   +1 more source

Effect of surface-functionalization of Na+-montmorillonite nanoclay using 3-aminopropyltrimethoxy silane on the mechanical properties of E-glass chopped strand mat/epoxy composites [PDF]

open access: yesJournal of Particle Science and Technology, 2018
In the present work, Na+-montmorillonite nanoclay (Na-MMT) was functionalized using 3-aminopropyltrimethoxysilane (3-APTMS) as a coupling agent. The covalent functionalization of MMT was confirmed by Fourier-transform infrared spectroscopy (FT-IR).
Ali Feiz   +2 more
doaj   +1 more source

Comparison of mechanical properties and color stability of various vacuum-formed orthodontic retainers: An in vitro study

open access: yesSaudi Dental Journal, 2023
Background: Vacuum-formed retainer (VFR) is the most used retainer due to its higher aesthetic properties and lower cost, their mechanical properties of are important in determining the stability and long-term use of appliances made out of them.
Aljazi H. Aldweesh   +4 more
doaj   +1 more source

Experimental Analysis of Fiber Laminating Effects on Flexural Rigidity of Composite Endplates for Use in PEM Fuel Cells [PDF]

open access: yesHydrogen, Fuel Cell & Energy Storage, 2022
One of the most important components of a polymer electrolyte membrane fuel cell is the endplate, which must exert uniform contact pressure distribution on the membrane electrode assembly.
Mohammad Barzegari, Iman Sahebi Joibari
doaj   +1 more source

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