EFFECTS OF OPERATING TEMPERATURES AND ACCELERATED ENVIRONMENTAL AGEING ON THE MECHANICAL PROPERTIES OF A GLASS-VINYLESTER COMPOSITE
PBN-AR
Instytucja
Instytut Transportu Samochodowego
Informacje podstawowe
Główny język publikacji
en
Czasopismo
MECHANICS OF COMPOSITE MATERIALS (20pkt w roku publikacji)
ISSN
0191-5665
EISSN
1573-8922
Wydawca
SPRINGER
DOI
URL
Rok publikacji
2017
Numer zeszytu
3
Strony od-do
335-350
Numer tomu
53
Identyfikator DOI
Liczba arkuszy
0.73
Słowa kluczowe
en
polymer-matrix composites
mechanical properties
semiempirical approach
effects of operating temperature
effects of environmental ageing
Streszczenia
Język
en
Treść
Experimental identification of the mechanical properties of a selected glass-vinylester structural composite is developed, performed, and analysed taking into account accelerated environmental ageing and three operating temperatures (–20, 20, and 55°C) corresponding to the operating temperature range for composite footbridges in the Central Europe. The main constituents of the composite fabricated using infusion technology are a bidirectional balanced stitched E-glass fabric and a flame retardant, vinylester resin. After homogenization, the composite reinforced with one fabric forms a single lamina and is modeled as a linear elastic-brittle orthotropic material. Full sets of material constants were identified for the initial and aged composites at the selected operating temperatures. The accelerated environmental ageing of the composite was performed on 4-layer symmetric laminate platelets protected with a 300-mm-thick gelcoat layer, using an ageing chamber and a relevant ageing programme. A comparative analysis was carried out in order to determine the effects of operating temperature and accelerated environmental ageing on the material constants of the GFRP composite. It is found that the composite tested can be modeled as a linear elastic-brittle orthotropic material to the level of ~20% of its strength in each strength test. The impact of the accelerated environmental ageing and operating temperature in the range from –20 to 55°C on the elastic/strength/ultimate strain constants of the selected E-glass/vinylester composite can be significant and different for individual constants.
Cechy publikacji
ORIGINAL_ARTICLE
Inne
System-identifier
827287
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