TY - JOUR
T1 - Temperature-sensitive mechanical properties of GFRP composites in longitudinal and transverse directions
T2 - A comparative study
AU - Manalo, Allan
AU - Maranan, Ginghis
AU - Sharma, Sukrant
AU - Karunasena, Warna
AU - Bai, Yu
PY - 2017/8/1
Y1 - 2017/8/1
N2 - A comparative study was conducted to evaluate the temperature-sensitive mechanical properties of glass fibre reinforced polymer (GFRP) composites in the longitudinal and transverse directions. GFRP coupons with different shear span-to-depth ratios were tested under three-point static bending test at temperatures ranging from room temperature up to 200 °C. Timoshenko Beam Theory-based procedure was then adopted to calculate the flexural and shear moduli of the GFRP laminates under moderate and elevated in-service temperatures. The results showed that the mechanical properties of the transversely cut specimens is affected more by the increase in temperature than the longitudinally cut specimens. Similarly, the interlaminar shear and flexural strengths of GFRP composites were found influenced more by elevated temperature compared to the stiffness properties. Moreover, the shear modulus undergone more severe degradation compared to the flexural modulus. Simplified empirical models were proposed to estimate the mechanical properties of the GFRP pultruded laminates in both the longitudinal and transverse directions at varying temperatures.
AB - A comparative study was conducted to evaluate the temperature-sensitive mechanical properties of glass fibre reinforced polymer (GFRP) composites in the longitudinal and transverse directions. GFRP coupons with different shear span-to-depth ratios were tested under three-point static bending test at temperatures ranging from room temperature up to 200 °C. Timoshenko Beam Theory-based procedure was then adopted to calculate the flexural and shear moduli of the GFRP laminates under moderate and elevated in-service temperatures. The results showed that the mechanical properties of the transversely cut specimens is affected more by the increase in temperature than the longitudinally cut specimens. Similarly, the interlaminar shear and flexural strengths of GFRP composites were found influenced more by elevated temperature compared to the stiffness properties. Moreover, the shear modulus undergone more severe degradation compared to the flexural modulus. Simplified empirical models were proposed to estimate the mechanical properties of the GFRP pultruded laminates in both the longitudinal and transverse directions at varying temperatures.
KW - Comparative study
KW - Elevated temperature
KW - Flexure
KW - Interlaminar shear
KW - Longitudinal direction
KW - Transverse direction
UR - http://www.scopus.com/inward/record.url?scp=85018640755&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2017.04.040
DO - 10.1016/j.compstruct.2017.04.040
M3 - Article
AN - SCOPUS:85018640755
SN - 0263-8223
VL - 173
SP - 255
EP - 267
JO - Composite Structures
JF - Composite Structures
ER -