accessing damage of plain and fiber reinforced

(PDF) ACCESSING DAMAGE OF PLAIN AND FIBER REINFORCED CONCRETE ...

ACCESSING DAMAGE OF PLAIN AND FIBER REINFORCED CONCRETE UNDER LOADING USING VARIATIONS OF ULTRASONIC PULSE VELOCITY

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Assessment of Plain and Glass Fiber-Reinforced Concrete Under ...

The loading continued until cracks on the surface of the specimens were observed. Investigations were performed for both plain concrete and fiber-reinforced concrete to establish a correlation between ultrasound response characteristics, and the damage caused by impact loading due to the energy of blows transferred to the specimens.

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Numerical Simulations of GFRP-Reinforced Columns Having ...

The present investigation aims to propose a numerical model for assessing the complex damaging response of glass fiber-reinforced polymer- (GFRP-) reinforced concrete columns having hybrid fibers and confined with GFRP spirals (GFHF columns) under concentric and eccentric compression. Fiber-reinforced concrete (FRC) consists of polyvinyl alcohol fibers (PVA) and polypropylene fibers (PF). A ...

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Material Damage Evolution for Plain and Steel-Fiber ...

May 16, 2018 · This paper summarizes the results of a research aimed at assessing the damage of plain and steel-fiber-reinforced concrete when using ultrasonic compression and shear wave velocities. The ultrasonic waves and the axial compression loading were oriented to the same direction in order to track the damage progress during several loading steps.

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Experimental Investigation on Damage Behavior of ...

Nov 20, 2018 · This paper presents an experimental investigation on the stress–strain behavior and the damage mechanism of polypropylene fiber reinforced concrete (PFRC) under monotonic and cyclic compression. Fifty-four specimens for different fiber volume fractions and aspect ratios were tested. Acoustic emission (AE) technique was used to monitor the damage progression. The damage mechanism of ...

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Experimental and numerical fracture analysis of the plain and ...

Aug 01, 2020 · Hu et al. proposed a peridynamic based computational method for a homogenized description of fiber-reinforced behavior to simulate dynamic brittle fracture and damage in fiber-reinforced composites. In [65] , a new BB-PD model is developed to study in-plane dynamic fracture in orthotropic composite materials, a continuous micromodulus is ...

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Impact damage assessment of carbon fiber reinforced composite ...

Jul 03, 2019 · Impact damage assessment of carbon fiber reinforced composite with different stacking sequence Rahul S Sikarwar and R Velmurugan Journal of Composite Materials 2019 54 : 2 , 193-203

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(PDF) Assessing Damage in Corroded Reinforced Concrete Using ...

By testing plain, notched-plain, reinforced, and corroded-reinforced specimens, different damage mechanisms were isolated and characterized. AE events were analyzed using conventional AE parameters.

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Fracture behaviour of plain and fiber-reinforced concrete ...

Apr 01, 2010 · Pre-cracked plain and fiber-reinforced concrete specimens have been tested under three-point bending up to the final failure. By varying the crack position along the beam, in order to obtain a fracture process under pure Mode I or under mixed Mode I + II, crack paths and the load–central deflection curves have been determined.

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Failure and impact resistance analysis of plain and fiber ...

Concrete confined with fiber-reinforced polymer (FRP) has shown excellent improvement as compared to referenced plain concrete in terms of strength and energy absorption capacity under static loads (Matthys et al., 2005; Pham et al., 2015; Xiao and Wu, 2003). However, these parameters under dynamic loads have not been well examined.

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Assessing Damage in Corroded Reinforced Concrete Using ...

By testing plain, notched-plain, reinforced, and corroded-reinforced specimens, different damage mechanisms were isolated and characterized. AE events were analyzed using conventional AE parameters. In addition, waveform analysis was conducted using both fast Fourier transform and wavelet transform methods.

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Full Curve Damage Process of Polypropylene Fiber Reinforced ...

The fiber addition leads to a bridge action effect, and consequently to a more ductile behavior and higher toughness of the fiber reinforced mortar compared to a plain mortar.

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Compression resilience and impact resistance of fiber ...

Plain and twill fabrics offer sufficient resistance again ball burst. The yarn deformation allows formation of dome shape after ball impact. Maximum impact resistance in ball burst is obtained for plain weave because of highest level of interyarn binding.

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Effect of fiber architecture on the residual strength of ...

Glass fiber-reinforced polymer (GFRP) composites are important structural materials with relatively low costs and excellent mechanical performances, which are used in new energy, aerospace, automotive industry, shipbuilding industries and so on. 1 –3 Among them, laminated GFRPs are of mainly concerns because they exhibit satisfactory mechanical properties with unidirectional composites and ...

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LOCAL IMPACT DAMAGE BEHAVIOR OF FIBER REINFORCED HIGH ...

projectile on fiber reinforced concrete (FRC) slabs. The primary objective of the study was to investigate the local damage behavior of fiber reinforced high strength concrete slabs. The control slabs were 600 mm square, 90 mm thick reinforced with 8 mm diameter steel rebars, whereas 2% crimped steel fibers were added in FRC slabs.

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Influence of Carbon Fibers on Strain and Damage Sensing of ...

The maximum shift in electrical resistivity in no-fiber specimens was 3x10-5, which rose to 200 times for 0.5% fiber dosage, providing a maximum increase in electrical resistance (FCR) of 0.006 compared with non-fiber. Similarly, the increased electrical resistance factor is 1.3 from 0.5% to 1% fiber dosage, and from 1% to 1.5% are 2 and from 1 ...

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Aircraft Structure - an overview | ScienceDirect Topics

For the sisal fiber composites, the model could not finish the finite element iteration that can be owed to the lowest value of E. Hemp and flax fiber-based composites drastically increase the weight of the wing box, whereas Ramie fiber-based composites show the reduction in weight of the wing box without compromising structural integrity [9].

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Improvement of impact resistance of plain-woven composite by ...

Carbon fiber reinforced polymer (CFRP) composites have excellent mechanical properties, specifically, high specific stiffness and strength. However, most CFRP composites exhibit poor impact resistance. To overcome this limitation, this study presents a new plain-woven CFRP composite embedded with superelastic shape memory alloy (SMA) wires. Composite specimens are fabricated using the vacuum ...

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Low-Cycle Fatigue of Plain and Fiber-Reinforced Concrete

Results of an experimental investigation of the behavior of plain concrete and steel and polypropylene fiber-reinforced concrete under cyclic compressive loading are presented. The parameters of the study were: fiber type, fiber volume, concrete strength, and the stress-to-strength ratio. The tests were conducted under load control.

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Influence of Fiber Distribution and Orientation in the ...

Polyolefin fiber-reinforced concrete (PFRC) has become an attractive alternative to steel for the reinforcement of concrete elements, mainly due to its chemical stability and the residual strengths that can be reached with lower weights. The use of polyolefin ...

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Use of attenuation to monitor load-induced damage in plain ...

In addition to sensitivity of those methods to damage level, sensitivity of attenuation to the heterogeneities of the plain and fiber reinforced mortar specimens were analyzed. MAC was found the most sensitive method to the levels of damage and it was also found sensitive to the heterogeneity of the specimens.Dept. of Civil and Environmental ...

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Molecules | Special Issue : Fibre Reinforced Composites ...

Carbon fiber mesh reinforced cement-based composites (CMCCs) have received extensive attention in the field of engineering repair and structural reinforcement due to their outstanding properties such as two-way force, rust prevention, high specific strength, and low base surface requirements.

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Probabilistic Flexural Fatigue in Plain and Fiber-Reinforced ...

Abstract. The objective of this work is two-fold. First, we attempt to fit the experimental data on the flexural fatigue of plain and fiber-reinforced concrete with a probabilistic model (Saucedo, Yu, Medeiros, Zhang and Ruiz, Int. J. Fatigue, 2013, 48, 308–318).

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Fatigue of Textile and Short Fiber Reinforced Composites ...

This book covers several aspects of the fatigue behavior of textile and short fiber reinforced composites. The first part is dedicated to 2D and 3D reinforced textile composites and includes a systematic description of the damage evolution for quasi-static and tensile-tensile fatigue loadings.

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Comparison of Performance of Standard Concrete And Fibre ...

properties before failure, but governs the post failure behavior. Thus, plain concrete, which is a quasi-brittle material, is turned to the pseudo ductile steel fiber reinforced concrete. After matrix crack initiation, the stresses are absorbed by bridging fibers, and the bending moments are redistributed.

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Review on the Performance of Glass Fiber Reinforced Concrete

properties of fiber reinforced concrete. The glass fiber reinforced concrete showed almost 20 to 25 % increase in compressive strength, flexural and split tensile strength as compared with 28 days compressive strength of plain concrete. While to improve the durability from the aspect of acid attacks on concrete the use of AR glass fibers had

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Experimental Investigation of Fiber Reinforced Concrete Beams

Shear strength of fiber reinforced concrete beams was studied in this research project. Three types of fibers were examined: hooked-end steel fiber, crimped-steel fiber, and crimped-monofilament polypropylene fibers.

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Experimental Study on Compression Behavior of Fiber ...

Fiber-reinforced resin-based composite stiffened panels are put in the hygrothermal box at 70°C and 85% RH until moisture absorption reaches balance. Then, the compression experiments on the common stiffened panels and the stiffened panels after moisture absorption are conducted to get buckling and failure loads. Test results are compared to analyze the effect of damage on the carrying ...

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Damage processes of polypropylene fiber reinforced mortar in ...

Jan 31, 2018 · The evolution process of failure mode and damage degree of polypropylene fiber reinforced mortar and concrete were analyzed by measuring the AE energy, RA value, AF value and b value. It was found that the cement matrix cracked on the initial stage, the cracks further developed on the medium stage and the fibers were pulled out on the last stage.

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Dynamic properties and application of steel fiber reinforced ...

In this dissertation, the application of steel fiber reinforced self-consolidating concrete (SFRSCC) to precast unbonded post-tensioned segmental bridge columns in moderate-to-high seismic regions is evaluated numerically and experimentally. Drop weight impact tests are first conducted on plain concrete and steel fiber reinforced concrete (SFRC).

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Fatigue Behavior and Damage Evolution of 2D and 3D Textile ...

Mar 17, 2017 · This chapter gives an overview of the tension‐tension (R = 0.1) fatigue behavior of a wide range of textile composites: from two‐dimensional (2D) to three‐dimensional (3D) glass textile reinforced epoxy, 3D braided carbon composite, non‐crimp fabric stitched and unstitched carbon laminates.

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Effect of Yarn Distortion on the Mechanical Properties of ...

A meso-structure model of fiber-bar composites reinforced by three-dimensional weaving (FBCR3DW) is proposed. Optical microscopy images of the preform structure revealed that the fibers along the circumference of the yarn cross-weave were twisted randomly due to alternating yarn winding on either side of the fiber bars during the manufacturing process.

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Damage Behavior of Steel Fiber Reinforced and Polymer ...

Damage behaviors of plain concrete (PC), steel fiber reinforced concrete (SFRC), steel fiber reinforced and polymer modified concrete (SFRPMC) are studied in this paper by use of a Split Hopkinson Pressure Bar (SHPB). Three kinds of concrete materials appear obvious strain rate strengthening effects.

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The Impact Damage Evolution of Steel Fiber Reinforced and ...

Impact tests were carried out by use of a 74-mm-diameter split Hopkinson pressure bar to investigate the impact damage behaviors of plain concrete (PC), steel fiber reinforced concrete (SFRC) and steel fiber reinforced and polymer modified concrete (SFRPMC).

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Fatigue damage evaluation of plain woven carbon fiber ...

3 April 2013 Fatigue damage evaluation of plain woven carbon fiber reinforced plastic (CFRP) modified with MFC (micro-fibrillated cellulose) by thermo-elastic damage analysis (TDA) Ryohei Aoyama , Kazuya Okubo , Toru Fujii

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