STUDY OF ASYMMETRIC GLASS REINFORCED PLASTIC BEAMS IN OFF-AXIS FOUR-POINT BENDING

2014 ◽  
Author(s):  
E. Theotokoglou ◽  
E. Sideridis
Keyword(s):  
Four Point Bending ◽  
Reinforced Plastic

Numerical Analysis on Mechanical Properties of Beams Reinforced by CFRP Laminates

2015 ◽  
Vol 744-746 ◽  
pp. 196-200
Author(s):  
Ning Zhuang ◽  
Hao Dong Sun ◽  
Song Ge
Keyword(s):  
Large Scale ◽  
Growth Failure ◽  
High Strength ◽  
Test Results ◽  
Cfrp Laminates ◽  
Fiber Reinforced Plastic ◽  
Four Point Bending ◽  
Reinforced Plastic ◽  
Low Weight ◽  
Cfrp Sheet

Carbon Fiber Reinforced Plastic (CFRP) has been widely used in large-scale concrete infrastructure’s reinforcement and renovation because of its low weight and high strength, which promotes CFRP application in the field of civil engineering. This paper two aged beams reinforced by CFRP sheet was loaded to failure in four-point bending by laboratory experiment. Then the numerical model was built to simulate the destruction process and compared with test results. Based on the studying of this paper, the changing law of beam’s stress, ultimate bearing capacity growth, failure mode and cracking propagation was investigated during the loading process. The research has guiding significance for the design and construction of concrete structures reinforced by CFRP laminates.

Modeling of Deformation and Fracture of Concrete Structures with FRP Reinforcement

2015 ◽  
Vol 752-753 ◽  
pp. 685-688
Author(s):  
Andrey Benin ◽  
S.G. Semenov ◽  
Artem S. Semenov
Keyword(s):  
Image Correlation ◽  
Bending Test ◽  
Four Point Bending ◽  
Reinforced Plastic ◽  
Deformation And Fracture ◽  
Different Types ◽  
Loading Case ◽  
Frp Reinforcement ◽  
Four Point Bending Test ◽  
Frp Bars

Carrying capacity and fracture modes of concrete beams reinforced by different types of fiber reinforced plastic (FRP) bars are analyzed experimentally and numerically. The four-point-bending test is used as a typical loading case for this purpose. Synchronous registration of loading level, displacements and strains is performed by using InstronTM servohydraulic machine, LVDT sensors, strain gauges and digital image correlation Vic3DTM system. The experimental data and results of finite element simulations are compared and discussed.

The experimental static mechanical performance of ironed repaired GFRP–honeycomb sandwich beams

2012 ◽  
Vol 14 (6) ◽  
pp. 694-714 ◽  
Author(s):  
Benjamin William Mounir Kirollos ◽  
Richard Trede ◽  
Peter Lampen
Keyword(s):  
Glass Fibre ◽  
Mechanical Performance ◽  
Repair Process ◽  
Flexural Stiffness ◽  
Sandwich Beams ◽  
Four Point Bending ◽  
Reinforced Plastic ◽  
Glass Fibre Reinforced Plastic ◽  
Static Mechanical ◽  
Glass Fibre Reinforced

Damaged glass fibre reinforced plastic–honeycomb core sandwich beams are repaired using uncured glass fibre reinforced plastic fabrics and a handheld iron. The effect of iron temperature, application time and pressure on the effectiveness of repair is investigated by measuring the failure load and flexural stiffness of the repaired beams using third span four-point bending tests. Repairs are tested in compression and tension. A repair process is suggested which consistently recovers 95% of the compressive strength and 77% of the tensile strength of the damaged beam. The repair is shown to have little effect on beam flexural stiffness.

scholarly journals BENDING BEHAVIOUR OF GLULAM BEAMS REINFORCED WITH CARBON FRP PLATES

2015 ◽  
Vol 21 (7) ◽  
pp. 923-932 ◽  
Author(s):  
Ivan Glišović ◽  
Boško Stevanović ◽  
Miloš Petrović
Keyword(s):  
Mechanical Properties ◽  
Load Capacity ◽  
Experimental Program ◽  
Structural Elements ◽  
Ultimate Load Capacity ◽  
Four Point Bending ◽  
Reinforced Beams ◽  
Reinforced Plastic ◽  
Glued Laminated Timber ◽  
Carbon Fibre Reinforced Plastic

The idea of reinforcing glued laminated timber (glulam) beams came in response to the need to improve the mechanical properties, as well as to ensure higher reliability of this type of structural elements. This paper describes an experimental program which examines the reinforcement in flexure of glulam beams with carbon fibre reinforced plastic (CFRP) plates. Fifteen beams reinforced with CFRP at the tension side and five unreinforced control beams were instrumented and tested to failure in a four-point bending configuration. The mechanical properties of reinforced beams are compared to those of unreinforced beams with regard to the load-deflection behaviour, failure mode, ultimate load capacity, stiffness and strain distribution. The experimental results demonstrated the beneficial effect of the proposed reinforcing solution in terms of strength, stiffness and ductility.

Research on Load Carrying Capacity of R.C. Beams Strengthened by CFRP

2011 ◽  
Vol 71-78 ◽  
pp. 18-23
Author(s):  
Nian He Chen ◽  
Jiao Jiao Yuan ◽  
Cong Bin Huang ◽  
De Jian Shen
Keyword(s):  
Carbon Fiber ◽  
Experimental Research ◽  
Carrying Capacity ◽  
Reinforced Concrete Beams ◽  
Bending Test ◽  
Obvious Effect ◽  
Four Point Bending ◽  
Reinforced Plastic ◽  
Externally Bonded ◽  
Comparison Of The Results

A relatively deepgoing experimental research and analysis is carried out for the reinforced concrete beams strengthened with externally bonded Carbon fiber reinforced plastic (CFRP). First, a total of eight test beams are derived. The four-point bending test is then used to determine the load-displacement relationships of the beams. In the study, the performance of CFRP sheets is investigated. By comparison of the results of the experimental research on the R.C beam unstrengthened and the R.C beam strengthened by CFRP, it is shown that the influence of the carbon fiber sheets on the flexural carrying capacity of the strengthened beams is significant, CFRP has obvious effect to constrain the crack of the beams. The beam strengthened by CFRP at the different stages of the loading has ‘strain lag’. The plane assumption is valid for the beams strengthened by CFRP in different stages. The ductility of the beam strengthened by CFRP is obviously improved.

Study of asymmetric glass reinforced plastic beams in off-axis four-point bending

2014 ◽  
Vol 49 (5) ◽  
pp. 587-599 ◽  
Author(s):  
Efstathios E Theotokoglou ◽  
Emilio P Sideridis
Keyword(s):  
Four Point Bending ◽  
Reinforced Plastic

Fatigue performance of undamaged and repaired composite sandwich beams

2003 ◽  
Vol 217 (3) ◽  
pp. 229-248
Author(s):  
S Mahdi ◽  
A J Kinloch ◽  
F L Matthews ◽  
M A Crisfield
Keyword(s):  
Low Temperature ◽  
Carbon Fibre ◽  
Fatigue Performance ◽  
Sandwich Beams ◽  
Composite Sandwich ◽  
Four Point Bending ◽  
Reinforced Plastic ◽  
Tension And Compression ◽  
Carbon Fibre Reinforced Plastic ◽  
Low Temperature Cure

The behaviour of undamaged (i.e. as-manufactured) and repaired carbon fibre reinforced plastic (CFRP) sandwich beams loaded in cyclic four-point bending is described. Three repair configurations (one overlap and two scarf) were tested in tension and compression, and two repair systems (high- and low-temperature cure) were employed. The repaired beams always showed an inferior performance compared with the as-manufactured beams. The lifetime was dependent on the repair configuration, with the overlap repairs performing surprisingly well when loaded in compression. The degradation of stiffness with cycling was also investigated and was related to the microscopic evolution of damage.

Sign in / Sign up

Export Citation Format

Share Document