This paper studies the efficiency of applying an engineered cementitious composite (ECC) layer to tensile surface (RC) beams that were previously strengthened using externally bonded (EB) carbon fiber-reinforced polymer (CFRP) laminates. One control and ten RC produced tested utilizing a four-point loading regime. For beams, two kept only CFRP, additional ECC layers added rest beams. The CFRP w...

Lightning strike emulator was employed for evaluating the response of copper electroless coatings on epoxy-CFRP laminates under these high demanding electrical events. Samples were coated 15 and 30 min producing 0.6 1.2 µm thick layers, respectively, their performances compared with commercially protected naked laminates. Data show that a thin layer can improve performance CFRP 40 kA discharges...

Three-dimensional (3D) printing with continuous carbon-fiber-reinforced polymer (C-CFRP) composites is under increasing development, as it offers more versatility than traditional molding processes, such the out-of-autoclave-vacuum bag only (OOA-VBO) process. However, due to layer-by-layer deposition of materials, voids can form between layers and weaken some parts’ properties, interlaminar she...

Carbon fiber reinforced polymer (CFRP) laminates are featured by superior mechanical properties and excellent structural functions, which have been a promising alternative to conventional alloys steels in diverse industrial fields. Mechanical drilling is compulsory operation shape fibrous composites desired workpiece quality target dimensional accuracy. Progressive tool wear an extremely crucia...

Previous works have established the response and failure behaviour of hybrid (CFRP-GFRP) laminates when subjected to a wide range destabilising loads. However, date no focused on plates with cut-outs under shear loading quantified influence selective laminate shapes hybridisation their post-buckling response. Herein, plate collapse novel X-braced twill woven containing large circular cut-out (d...

This study undertakes a comprehensive investigation of the shear behavior reinforced concrete (RC) beams strengthened by near surface mounted (NSM) carbon fiber polymer (CFRP) laminates. Different strengthening configurations were employed varying length and inclination angle CFRP Results indicated that NSM-CFRP increased load-carrying capacity, ductility, stiffness, toughness from 8% to 41%, 9...

This paper discusses the long-term behavior of a series of highly-loaded, spun concrete pole specimens prestressed with carbon fiber-reinforced polymer (CFRP) tendons, which were subjected to outdoor four-point bending creep tests since 1996 in the frame of collaboration with the Swiss precast concrete producer, SACAC (Società Anonima Cementi Armati Centrifugati). The 2 m span cylindrical beams...

To develop a simplified and physically sound delamination-failure criterion, this paper reports joint experimental numerical study in which out-of-plane quasi-static indentations with different indentation forces were applied to the centre of fully clamped rectangular carbon fibre-reinforced polymer (CFRP) laminates. The results show that two basic micro-delamination growth modes, are separatel...

Debonding problems of externally bonded fiber reinforced polymer (FRP) sheets in flexurally FRP-strengthened reinforced concrete (RC) beams have been a concern and a research challenge since their application of this strengthening technique. Intermediate crack induced debonding is the most common failure mode which is that the debonding initiates at the critical flexural-shear or flexural crack...