Experimental and statistical analysis of flexural behavior of glass fiber reinforced polyester (GFRP) molded grating panels

Turan F., Isguzar T.

JOURNAL OF THE TEXTILE INSTITUTE, cilt.114, sa.8, ss.1238-1245, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 114 Sayı: 8
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1080/00405000.2022.2131310
  • Dergi Adı: JOURNAL OF THE TEXTILE INSTITUTE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Applied Science & Technology Source, Compendex, INSPEC
  • Sayfa Sayıları: ss.1238-1245
  • Anahtar Kelimeler: Molded grating, three-point bending, flexural stiffness, Weibull distribution, POLYMER COMPOSITES, FRP, CONCRETE, DECKS
  • Yıldız Teknik Üniversitesi Adresli: Evet

Özet

In this study, the full section of flexural and shear modulus of molded gratings made of glass fiber reinforced polyester (GFRP) have been statistically and experimentally analyzed. Three different gratings with slab height (h) of 25 mm, 30 mm and 38 mm were taken. The flexural (E) and shear modulus (G) of molded gratings were determined from the three-point bending tests by taking different grating span (L) - slab height (h) ratios ranging from 4 to 20 by four increments. Shear modulus was calculated from the test data by considering Timoshenko's shear deformation beam theory (TBT). The flexural and shear modulus of the molded gratings were determined with a reliability of 99% by Weibull distribution. The results showed that E and G obtained from the Weibull analysis take their maximum values at h38 and h30, respectively. However, maximum mean values of E and G obtained experimentally are at h25 and at h38, respectively.