Viscoelastic Effect on the Fracture Toughness of GFRP: Experimental Approach

Abstract:

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The dynamic fracture tests were carried out for a glass fiber reinforced plastic specimen with a crack and dynamic fracture toughness was evaluated by examination of cracking at an initial slit root. Before the crack initiated at the slit root, a whitened damage zone was created surrounding the slit tip. The damage zone consists of micro cracking in the matrix, debonding between a fiber and the matrix, and fracture of the fiber. The comparison of the dynamic fracture toughness and the static fracture toughness value shows that the former is around 12 MPa√m and apparently higher than the later, which is 7 MPa√m. To understand those experimental results and mechanics of the damage zone, a dynamic debonding test was carried out and dynamic bonding strength was estimated as around 70 MPa.

Info:

Periodical:

Key Engineering Materials (Volumes 306-308)

Edited by:

Ichsan Setya Putra and Djoko Suharto

Pages:

745-750

DOI:

10.4028/www.scientific.net/KEM.306-308.745

Citation:

S. S. Lana et al., "Viscoelastic Effect on the Fracture Toughness of GFRP: Experimental Approach", Key Engineering Materials, Vols. 306-308, pp. 745-750, 2006

Online since:

March 2006

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Price:

$35.00

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