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Structural Performance of Corner Joint Reinforced with FRP under Diagonal Tension Loading | ||
| تحقیقات علوم چوب و کاغذ ایران | ||
| Article 11, Volume 31, SPRING 1 - Serial Number 54, March 2016, Pages 118-129 PDF (686.54 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.22092/ijwpr.2015.105609 | ||
| Authors | ||
| Hamideh Abdolzadeh* 1; Ghanbar Ebrahimi2; Mohammad Layeghi3 | ||
| 1PhD., Wood science & Technology Department, Natural Resources Faculty, University of Tehran, Karaj, Iran | ||
| 2Professor, Wood science & Technology Department, Natural Resources Faculty, University of Tehran, Karaj, Iran | ||
| 3Assistant Professor, Wood science & Technology Department, Natural Resources Faculty, University of Tehran, Karaj, Iran | ||
| Abstract | ||
| In this study, structural performance of corner joint reinforced by fiber reinforced polymers (FRP) at the area of maximum tension stress was investigated under diagonal tension loading. Therefore 1 to 3 layers of unidirectional woven Glass, Carbon and Kevlar fibers were used and hand lay-up was done by vinyl ester and epoxy resins. Results of load-displacement curve at yield point exhibited capability of the reinforcing layers in preventing joint opening to some extent under load. However, failure was observed at the joint due to picking fibers from wood surface or members fracture near the interface when loading increased. Since the reinforced zones of the joints by FRP show the maximum shear stress, consequently the separation of fibers from wood surfaces increased at these locations. The adhesion of FRP layers to joint surface was not appropriate due to difficult process of layering at right angle of joints followed by probable formation of air bubbles. The results of assessing FRPs reinforcing behaviour indicated that application of vinyl ester in comparison with epoxy as matrix exhibited better performance. In addition, glass and carbon fibers showed better performance than Kevlar fibers as reinforcing agents. | ||
| Keywords | ||
| Corner joint; Fiber reinforced polymer; vinyl ester resin and epoxy resin | ||
| References | ||
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