The axial compressive strength of unidirectional FRP made by pultrusion is generally quite lower than its axial tensile strength. This fact decreases the advantages of FRP as main load bearing member in engineering structure. A theoretical iterative calculation approach was suggested to predict the ultimate axial compressive stress of the combined structure and analyze the influences of geometr...

This paper propose a new concept of an eddy current (EC) multi-element sensor for the characterization of carbon fiber-reinforced polymers (CFRP) to evaluate the orientations of plies in CFRP and the order of their stacking. The main advantage of the new sensors is the flexible parametrization by electronical switching that reduces the effort for mechanical manipulation. The sensor response was...

The production of carbon fiber-reinforced plastic (CFRP) is currently changing from a highly manual and expensive to an automated process. However for automated production of CFRP parts new sensor systems for quality control are required. In this article we present a photometric stereo inspection system that is able to automatically evaluate critical quality criteria of carbon fiber fabrics. Ba...

Externally bonded carbon fiber reinforced polymer (CFRP) laminates are a feasible and economical alternative to traditional methods for strengthening and stiffening deficient reinforced concrete and prestressed concrete girders as shown in Fig. (1). Although extensive research has already been undertaken to investigate the behavior of CFRP strengthened bridge girders, the majority of work condu...

A concept of a nature-inspired pedestrian bridge which tries to merge architectural, structural and manufacturing aspects in an optimized way is presented. The 18.0-m-span bridge is designed as an overhead spatial frame of a complex double-curved shape, which is composed of twelve modules consisting of lightweight carbon fiberreinforced polymer (CFRP) sandwich construction. The modules are fabr...

In order to explore the influence of length and width CFRP as well anchor spacing on reinforcement effectiveness plates concrete beams (RC beams) under secondary load, 7 anchored damaged FRP reinforced are used test beams, 1 unanchored beam is a control beam, structural indicators such ultimate load bending strength analyzed in result. The conclusion that composite plate can effectively prevent...