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Wyszukujesz frazę "storage factor" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Dynamic mechanical characterization of epoxy composite reinforced with areca nut husk fiber
Autorzy:
Muralidhar, N.
Kaliveeran, Vadivuchezhian
Arumugam, V.
Srinivasula Reddy, I.
Powiązania:
https://bibliotekanauki.pl/articles/139576.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
areca nut husk fiber
dynamic mechanical analysis
storage modulus
loss modulus
elastic modulus
damping factor
Opis:
Natural fiber polymer composites are gaining focus as low cost and light weight composite material due to the availability and ecofriendly nature of the natural fiber. Fiber composites are widely used in civil engineering, marine and aerospace industries where dynamic loads and environmental loads persist. Dynamic analysis of these composites under different loading and environmental conditions is essential before their usage. The present study focuses on the dynamic behavior of areca nut husk reinforced epoxy composites under different loading frequencies (5 Hz, 10 Hz and 15 Hz) and different temperatures (ranging from 28◦C to 120◦C). The effect of loading and temperature on storage modulus, loss modulus and glass transition temperature was analyzed. Increase in storage modulus is observed with increase in loading frequency. The storage modulus decreases with increase in temperature. The glass transition temperature of the composite is determined to be 105◦C. The elastic modulus calculated from the DMA data is compared with three point bending test
Źródło:
Archive of Mechanical Engineering; 2020, LXVII, 1; 57-72
0004-0738
Pojawia się w:
Archive of Mechanical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of physical and dynamic mechanical properties of coconut husk ash (CHA) reinforced polyester composites
Autorzy:
Ipilakyaa, Tertsegha
Tuleun, Livinus
Sule, Terngu
Powiązania:
https://bibliotekanauki.pl/articles/1819156.pdf
Data publikacji:
2020
Wydawca:
Politechnika Koszalińska. Wydawnictwo Uczelniane
Tematy:
dynamic mechanical analysis
sieve analysis
storage modulus
loss modulus
mechanical loss factor
dynamiczna analiza mechaniczna
analiza sitowa
moduł zachowawczy
moduł stratności
współczynnik stratności mechanicznej
Opis:
The evaluation of physical and dynamic mechanical analysis (DMA) properties was carried out on a developed Coconut Husk Ash Reinforced Polymer Composite. Sieve analysis of pretreated coconut husk ash was done to obtain 75 μm, 150 μm and 300 μm particles sizes. These particles were used at varying compositions of 5%, 10%, 15%, 20% and 25% as reinforcements for polyester composites. The catalyst and accelerator used were Methyl Ethyl Ketone Peroxide and Cobalt Naphthenate respectively. The densities of the evaluated composites made with 150 μm particles were found to be less dense with values ranging from 0.9792 g/cm3 to 1.2561 g/cm3 than those made with 75 μm and 300 μm. The results also show that the percentage water absorbed by samples increased, ranging from 0 to over 2000 E’/MPa for all percentage reinforcements of coconut husk ash, with an increase in the duration of immersion of the samples in distilled water. However, 25% reinforcement had better results for all particle sizes. There were obvious variations of storage modulus, loss modulus and mechanical loss factor with percentage weight of reinforcement, temperature and frequency. The composite with 15%reinforcement displayed better results. The composite shows promising results as a material for interior components in aerospace and automobile industries.
Źródło:
Journal of Mechanical and Energy Engineering; 2020, 4, 4; 315--324
2544-0780
2544-1671
Pojawia się w:
Journal of Mechanical and Energy Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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