Seismic Retrofitting of Unreinforced Brick Masonry Panels with Glass Fibre Reinforced Polymers

2017 ◽  
Vol 8 (1) ◽  
pp. 28-37 ◽  
Author(s):  
Radhikesh Prasad Nanda ◽  
Hasim Ali Khan ◽  
Apurba Pal
Keyword(s):  
Flexural Strength ◽  
Glass Fibre ◽  
Bending Moment ◽  
Brick Masonry ◽  
Seismic Retrofitting ◽  
Loading Test ◽  
Reinforced Polymers ◽  
Geometric Configurations ◽  
Out Of Plane ◽  
Glass Fibre Reinforced

The out-of-plane performances of brick masonry panels with different retrofitting patterns using glass fibre reinforced polymers (GFRP) have been studied under three-point loading test. The panels were retrofitted on one side and both sides with different geometric configurations. The retrofitted specimens increased the failure load from 19.6 kN (UR) to 79.2 kN. It was observed that the flexural strength of the retrofitted patterns increased from 31.58% to 150% when compared to un-retrofitted specimens. Also, the bending moment of the retrofitted panels increased from 5.94 kNm to 8.96 kNm when retrofitted with one side, while it goes up to 14.88 kNm when retrofitted with both side as compared to un-retrofitted specimens. Further, it also observed that the panel with cross retrofitting showed more efficiency in terms of flexural strength, bending moment, stiffness and deformation capacity.

scholarly journals Effect of Fibre Orientation on the Tensile and Flexural Properties of Glass Fibre Reinforced Epoxy Angle-Ply Laminated Composites

2020 ◽  
Vol 9 (10) ◽  
pp. 101-105
Keyword(s):  
Flexural Strength ◽  
Glass Fibre ◽  
Applied Load ◽  
Fibre Orientation ◽  
Laminated Composites ◽  
Flexural Properties ◽  
Binding Strength ◽  
Out Of Plane ◽  
The Matrix ◽  
Glass Fibre Reinforced

The present work is aimed at studying glass fibre reinforced epoxy angle-ply laminated composites under in-plane and out-of-plane loads. Three symmetric laminates were fabricated at different combination of fibre ply orientations through a simple hand layup technique. The prepared laminates were characterized for tensile and flexural strength measurements according to the ASTM standards D3039 and D7264, respectively. Symmetric laminates consisting of fibre plies orienting in the direction of applied load have demonstrated greater resistance against tensile loads, whereas laminate system consisting of adjacent plies oriented in different angles promoted binding strength of the matrix which in turn resulted in enhanced flexural strength values.

scholarly journals Investigation into fibre orientation and weldline reduction of injection moulded short glass-fibre/polyamide 6-6 automotive components

2019 ◽  
Vol 33 (12) ◽  
pp. 1603-1628
Author(s):  
Sarah Mosey ◽  
Feras Korkees ◽  
Andrew Rees ◽  
Gethin Llewelyn
Keyword(s):  
Glass Fibre ◽  
Fibre Orientation ◽  
Weight Ratio ◽  
Polyamide 6 ◽  
Processing Parameters ◽  
Material Strength ◽  
Reinforced Polymers ◽  
Automotive Components ◽  
Glass Fibre Reinforced ◽  
Component Failures

Due to the increasing demands on automotive components, manufacturers are relying on injection moulding components from fibre-reinforced polymers in an attempt to increase strength to weight ratio. The use of reinforcing fibres in injection moulded components has led to component failures whereby the material strength is hampered through the formation of weldlines which are also a problem for unreinforced plastics. In this study, an industrial demonstrator component has the injection locations verified through a combination of fibre orientation tensor simulation and optical microscopy analysis of key locations on the component. Furthermore, the automotive component manufactured from 30% glass fibre–reinforced polyamide 6-6 is simulated and optimized through a Taguchi parametric study. A comparison is made between the component, as it is currently manufactured, and the optimum processing parameters determined by the study. It was found that the component can be manufactured with roughly 7.5% fewer weldlines and with a mould fill time 132 ms quicker than the current manufacturing process.

scholarly journals Porosity Determination of Carbon and Glass Fibre Reinforced Polymers Using Phase-Contrast Imaging

2018 ◽  
Vol 38 (1) ◽  
Author(s):  
Christian Gusenbauer ◽  
Michael Reiter ◽  
Bernhard Plank ◽  
Dietmar Salaberger ◽  
Sascha Senck ◽  
...  
Keyword(s):  
Glass Fibre ◽  
Phase Contrast ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
Reinforced Polymers ◽  
Glass Fibre Reinforced

Effect of indenter size on delamination initiation in glass fibre reinforced polymers (GFRP) under transverse loading

2004 ◽  
Vol 39 (14) ◽  
pp. 4637-4641
Author(s):  
S. Yuen ◽  
T. Kuboki ◽  
P.-Y. B. Jar ◽  
T. W. Forest ◽  
J. J. R. Cheng
Keyword(s):  
Glass Fibre ◽  
Transverse Loading ◽  
Reinforced Polymers ◽  
Glass Fibre Reinforced

Investigating the Unrecovered Displacement of Glass Fibre Reinforced Polymers Due to Manufacturing Conditions

2015 ◽  
Vol 2 (2) ◽  
pp. 100-104 ◽  
Author(s):  
SHAH MOHAMMADI ◽  
L. SOLNICKOVA ◽  
B. CRAWFORD ◽  
M. KOMEILI ◽  
A. S. MILANI
Keyword(s):  
Glass Fibre ◽  
Reinforced Polymers ◽  
Glass Fibre Reinforced

scholarly journals EXPERIMENTAL ANALYSIS ON FLEXURAL BEHAVIOUR OF CONCRETE BEAMS WITH GFRP REINFORCEMENT / LENKIAMŲJŲ ELEMENTŲ, ARMUOTŲ STIKLO PLUOŠTO ARMATŪRA, ELGSENOS STATMENAJAME PJŪVYJE EKSPERIMENTINIS TYRIMAS

2013 ◽  
Vol 5 (2) ◽  
pp. 76-81 ◽  
Author(s):  
Edgaras Atutis ◽  
Juozas Valivonis ◽  
Mantas Atutis
Keyword(s):  
Flexural Strength ◽  
Prestressed Concrete ◽  
Concrete Beams ◽  
Concrete Structures ◽  
Experimental Investigations ◽  
Reinforced Polymers ◽  
Time Period ◽  
Glass Fibre Reinforced ◽  
Metallic Reinforcement ◽  
Gfrp Reinforcement

The current economic pressures on utilities to extend a service life of structural concrete mean that concrete structures may have to perform safety functions for a time period significantly greater than their initial design life. However, the structural design and construction requirements for concrete structures with non-metallic reinforcement are very unique and not complete. This paper aims to provide experimental investigations of concrete beams reinforced with GFRP (glass fibre reinforced polymers) based on flexural strength. Both reinforced and prestressed concrete beams have been tested. Together with the strength characteristics, the effect of pre-stress on deflection and cracking distribution has been mainly governed by the stress–strain laws of reinforced concrete. The work is resulted in design code equations for the prediction of the ultimate flexural strength. The influence of the effect of prestressing on the deflection and cracking was analysed. Santrauka Dėl dabartinės ekonominės situacijos vis labiau siekiama, kad konstrukcinis betonas būtų naudojamas kuo ilgiau. Ypač su sauga susijusioms gelžbetoninėms konstrukcijoms dažnai keliami reikalavimai, kad per eksploatacinį šių konstrukcijų laikotarpį pagrindinės betono savybės liktų nepakitusios, lyginant su projektinėmis vertėmis. Vis dėlto reikalavimai, keliami šių konstrukcijų eksploatavimui, yra unikalūs, tačiau nėra visiškai apibrėžti. Straipsnyje aprašomi sijų, armuotų stiklo pluošto armatūra, eksperimentiniai tyrimai, kuriuose buvo nagrinėjama šių sijų laikomoji galia statmenajame pjūvyje. Buvo bandomos sijos, armuotos išilgine iš anksto įtempta stiklo pluošto armatūra, ir sijos, armuotos neįtemptąja stiklo pluošto armatūra. Gautos statmenojo pjūvio laikomosios galios lyginamos su įvairiomis projektavimo normomis ir rekomendacijomis, analizuojama išankstinio įtempimo reikšmė sijų įlinkiui bei pleišėtumui.

Mechanisms of fatigue fracture in short glass fibre-reinforced polymers

1987 ◽  
Vol 22 (11) ◽  
pp. 4015-4030 ◽  
Author(s):  
R. W. Lang ◽  
J. A. Manson ◽  
R. W. Hertzberg
Keyword(s):  
Fatigue Fracture ◽  
Glass Fibre ◽  
Reinforced Polymers ◽  
Short Glass Fibre ◽  
Glass Fibre Reinforced ◽  
Short Glass

Effect of combined fatigue and hygrothermal loading on structural properties of E-glass/polymers

2016 ◽  
Vol 231 (18) ◽  
pp. 3382-3392 ◽  
Author(s):  
Abhineet Saini ◽  
Rahul Chhibber ◽  
A Chattopadhyay
Keyword(s):  
Glass Fibre ◽  
Volume Fraction ◽  
Cyclic Fatigue ◽  
Standard Test ◽  
Reinforced Polymers ◽  
Tropical Environments ◽  
Tropical Conditions ◽  
Different Temperatures ◽  
Glass Fibre Reinforced ◽  
Structural Tests

The paper discusses the potential ingress and combined effect of moisture and temperature on pre-fatigued glass fibre-reinforced polymers standard test specimens. An experimental investigation was conducted to analyse the behaviour of glass fibre-reinforced polymers’ in environmental conditions similar to that of tropical environments. The standard pre-fatigued glass fibre-reinforced polymers specimens were subjected to varying hygrothermal conditions: three different temperatures, i.e. natural bath, 45 ℃ and 55 ℃ to study the degradation in strength and related properties. Several macro-structural and micro-structural tests were conducted to determine the damage. The effect of these conditions on characteristics such as diffusivity, weight gain, resin volume fraction, conductivity and deterioration of ultimate tensile strength was determined. The maximum reduction in strength is found to be approximately 39% for the specimen exposed to 55 ℃ water bath for 60 days. This study shall be helpful in estimating the characteristics of glass fibre-reinforced polymers composites subjected to cyclic fatigue loads in the tropical conditions.

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