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Grasping Force Controlling By Slip Detection For Specific Artificial Hand (Ottobock 8e37), Mofaq Twfeq, Ihsan Baqer, Asaad Abdulsahib Aug 2026

Grasping Force Controlling By Slip Detection For Specific Artificial Hand (Ottobock 8e37), Mofaq Twfeq, Ihsan Baqer, Asaad Abdulsahib

Engineering and Technology Journal

This paper presents a theoretical and experimental study to control grasping force of specific artificial hand (Otto Bock 8E37), which it uses by amputees. The hand has two rigid fingers actuated by a DC motor through a multi-gears system. The aim of this work is to give the amputees a feeling of slipping while the hand grasping an object. The mathematical model has been derived to simulate the hand mechanism and analyze the generated signal of contact force between fingertip and the grasped object through a slippage phenomenon. The experimental work consisted of modifying the artificial hand design to aid …

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Effect Of Friction Stir Processing (Fsp) To The Some Properties Of Pure Copper Welded By Friction Stir Welding, Mais Abdulkareem Aug 2026

Effect Of Friction Stir Processing (Fsp) To The Some Properties Of Pure Copper Welded By Friction Stir Welding, Mais Abdulkareem

Engineering and Technology Journal

Friction stir processing (FSP) is an innovative technique of varying the metallic features by intense, local plastic deforming. Accordingly, materials are stirred with no altering the phase via melting or otherwise to produce a microstructure with equiaxed and fine grains. This method enhances the microstructural features of metals. In This study the microstructure and the mechanical features including (tensile strength and microhardness), and radiographic inspection results are studied. All specimens of pure copper use in the (FSW) and (FSP) have variable rotating speed (900, 1200, and 1600 rpm) with constant feed speed (40 mm/min). The most remarkable results, the ultimate …

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Mechanical And Acoustic Properties Of Composite Material In A Secondary Roof To Reducing The Cooling Load, Nassr Hussein, Aseel Mohammed, Hatam Kadhom Aug 2026

Mechanical And Acoustic Properties Of Composite Material In A Secondary Roof To Reducing The Cooling Load, Nassr Hussein, Aseel Mohammed, Hatam Kadhom

Engineering and Technology Journal

The present investigation aims to perform experimental study to show the feasibility of application composite materials as secondary roofs, as well as their capability for reducing cooling load in building. Moreover, compare some of their mechanical properties and acoustic insulation with conventional secondary roofs. Three basic models, which are common, were chosen for the construction of buildings' roofs in Baghdad (concrete and concrete tiles as basic components of the first model, brick and clay tiles as basic components of the second model and brick and normal tiles as basic components of the third model). In addition, three composite materials were …

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Realization Of Direct Linear Relation Between Control Voltage And Resonance Frequency Of The Lc Voltage Controlled Oscillator, Azzad Saeed Aug 2026

Realization Of Direct Linear Relation Between Control Voltage And Resonance Frequency Of The Lc Voltage Controlled Oscillator, Azzad Saeed

Engineering and Technology Journal

The main problem of traditional LC ( L represents the inductance, and C represents the Capacitance) Voltage Controlled Oscillators VCOs, is the non-linearity relation between the tuning control voltage and output resonance frequency, which is caused by two following reasons: the first one is the inverse and non-linear relation between the tuning control voltage and produced capacitance of the used varactor diode in the VCO circuit, and the second is the inverse and non-linear relation between the capacitance value of the used varactor diode and the output resonance frequency. In this paper, a proposed circuit has been designed and implemented …

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A Mixture Between Rule 90 And Rule 150 Cellular Automata As A Test Pattern Generator, Sahar Alawey Aug 2026

A Mixture Between Rule 90 And Rule 150 Cellular Automata As A Test Pattern Generator, Sahar Alawey

Engineering and Technology Journal

Built-in Self-test (BIST) is one of integrated circuit (IC) testing techniques that can be used as a pseudo-random generator for the Circuit Under Test (CUT). This paper introduces the design and simulation of a 4-bit test pattern generator (TPG) using a one dimension Linear Hybrid Cellular Automata (LHCA) with a mixture of rule 90 and 150. LHCA is an enhancement from Linear Feedback Shift Register (LFSR) which can have more random test vectors and improving the cycle length. Design and simulation have been performed using Quartus II and Model Sim software.

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Investigation Of Addition Different Fibers On The Performance Of Cement Mortar, Ahmed Al-Ghaban, Hussein Jaber, Aya Shaher Aug 2026

Investigation Of Addition Different Fibers On The Performance Of Cement Mortar, Ahmed Al-Ghaban, Hussein Jaber, Aya Shaher

Engineering and Technology Journal

This work presents an investigation of possibility incorporate of synthetic fibers (glass, nylon and carbon) at two states (short: 1cm, long: 5cm) effects on the mechanical properties of mortars (cement: sand composition (1:3)). Fibers materials used at different weight percentages ranged of (0, 0.4, 0.8, and 1.2) wt%. Density, water absorption, porosity, thermal conductivity, compressive strength and flexural strength experimentally investigated for mortar specimens after curing for (28 days). The results showed that the incorporation of these fiber materials improvement mechanical and physical tests for all reinforced samples with short and long fibers, and that the highest value of the …

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Synthesis And Characterization Nano Structure Of Mno2 Via Chemical Method, Khitam Shaker, Alyaa Abdalsalm Aug 2026

Synthesis And Characterization Nano Structure Of Mno2 Via Chemical Method, Khitam Shaker, Alyaa Abdalsalm

Engineering and Technology Journal

In the current research, Magnesium oxide II (MnO2) nanostructures were prepared by chemical route from hydro manganese chloride salt using Potassium hydroxide as reducing agent. X-Ray diffraction (XRD), SEM and Fourier transformation infrared (FTIR) used to characterize both particle size and structure of MnO2 nanoparticles. XRD results confirmed impurity of synthesized powder with α-MnO2 as predominant phase. The average particle size of manganese dioxide was in the range 25- 30 nm. Photographs of scanning electron microscope (SEM) showed two hierarchical structures, cluster agglomeration and chain appearance.

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A Proposed Method For The Sound Recognition Process, Azad Kareem, Marwa Jassim, Mustafa Ali Aug 2026

A Proposed Method For The Sound Recognition Process, Azad Kareem, Marwa Jassim, Mustafa Ali

Engineering and Technology Journal

One of the most important issues in the signal-processing world is the issue of sounds differentiations. It has many applications in identifying the sources of the sounds, and many researches nowadays serves in this field and all of them looking for the best way to have a high accuracy implementation of the discrimination process. Sounds can be recognized under suitable recording conditions by converting the sound signal from time to frequency domain (because Sound signal of a source differs from other sources by the frequency contents. This property serves to differentiate between sounds, and differences become visually apparent when the …

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Performance Study Of Solar Air Heater With Thermally Conducted Multi V Shaped Baffles And Ribs, Jalal Jalil, Ghaydaa Salih, Yosif Madh Aug 2026

Performance Study Of Solar Air Heater With Thermally Conducted Multi V Shaped Baffles And Ribs, Jalal Jalil, Ghaydaa Salih, Yosif Madh

Engineering and Technology Journal

In this study, solar air heater with thermally conducted multi V shaped baffles and with same baffles and ribs are investigated experimentally and numerically to improve the performance of conventional air heaters. Numerically, steady state 3D forced convection turbulent model is used to solve Navier Stokes and energy equations of airflow inside rectangular duct of solar air heater. The code was validated by comparing the numerical result with experimental results and the agreement seems acceptable. The numerical studies were extended to study the cases of flat plate and straight baffles solar air heater. From experimental and numerical studies, it was …

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Ecg Analysis Using Dwt And Wavelet Coefficient To Reduce The Feature And Svm-Icp For Classification And Matching, Janan Mahdi Aug 2026

Ecg Analysis Using Dwt And Wavelet Coefficient To Reduce The Feature And Svm-Icp For Classification And Matching, Janan Mahdi

Engineering and Technology Journal

The Electrocardiogram (ECG) considered as one of the important issue in the medical field (hospitals and clinics), which is used to represent the health of a heart. Increasing patients of heart has supposed to design an automatic computerization technique to classify various abnormalities of the heart activities; to reduce the analysis time and detection mistakes. This research focusing on achieve high performance of classifying abnormal ECG by applying different methods. The first method is Discrete Wavelet Transform (DWT) with 4-level to transform the ECG signal and extract the feature extraction and Wavelet Energy (WE) during feature extraction as feature vector. …

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Design And Implementation Of Wlan Based Zigbee For Personal Identification, Mohmmod Mosleh, Zahraa Saber Aug 2026

Design And Implementation Of Wlan Based Zigbee For Personal Identification, Mohmmod Mosleh, Zahraa Saber

Engineering and Technology Journal

In this research, a novel Wireless Local Area Network (WLAN) that can be used for personal identification has been proposed in order to control the entering of any building or facility for safety applications. The network consists of three parts; node carrying by authorized persons, Base Station (BS) to control the entering and gate controller. A Personal Computer (PC), which represented the BS, will display automatically some information like picture and state about the person that entered when he/she becomes in BS coverage area. The gate controller of protected building is received a command of PC after matching the data …

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Modeling Of Continues Laser Welding For Ti-6al-4v Alloys Using Comsol Multiphysics Software, Haneen Salman, Kadhim Hubeatir, Mohanned Al-Khafaji Aug 2026

Modeling Of Continues Laser Welding For Ti-6al-4v Alloys Using Comsol Multiphysics Software, Haneen Salman, Kadhim Hubeatir, Mohanned Al-Khafaji

Engineering and Technology Journal

A model for laser welding process using finite element method, the model was used for this work using the COMSOL Multiphysics software to predict the distribution of the temperature in the joint and to show the four welding zones (the melting zone, partial melting zone, zone affected by heat, and the material base). CO2 continues (CW) Laser used in the model welding thin sheets of titanium alloy Ti-6Al-4V. The results of this simulation work have been compared with the experimental works to show good agreement.

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Effect Of High Temperature On Mechanical Properties Of Rubberized Concrete Using Recycled Tire Rubber As Fine Aggregate Replacement, Wrya Abdullah, Mohamed Abdulkadir, Muhammad Muhammad Aug 2026

Effect Of High Temperature On Mechanical Properties Of Rubberized Concrete Using Recycled Tire Rubber As Fine Aggregate Replacement, Wrya Abdullah, Mohamed Abdulkadir, Muhammad Muhammad

Engineering and Technology Journal

Effects of various elevated heating temperatures on mechanical properties of normal concrete containing recycled tire rubber as a fine aggregate (RTRFA) has been investigated in this paper. Five different concrete mixes were prepared in the laboratory. In each mix Ordinary Portland Cement, natural coarse and fine aggregate, water and RTRFA are used with fine aggregate replacement ratios (0%, 6%, 12%, 18% and 24%) by weight. In the laboratory, 60 cylindrical specimens (100mm diameter × 200mm high) and 60 cubic specimens (150×150×150mm3) were prepared. The concrete specimens were exposed to four different heating temperatures: Control (Not heated), 200, 400, and 600°C, …

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Drag Reduction Study Of Xathan Gum With Polydiallyldimethylammonium Chloride (Pddac) Solutions In Turbulent Flow, Zainab Yousif Aug 2026

Drag Reduction Study Of Xathan Gum With Polydiallyldimethylammonium Chloride (Pddac) Solutions In Turbulent Flow, Zainab Yousif

Engineering and Technology Journal

The transportation of liquids through pipelines is attributed with high-energy consumption due to the turbulent nature of their transportation. Low concentrations of polymeric additives were proven effective flow enhancing agent when injected into these pipelines due to its viscoelastic property capable of suppressing the turbulent structures; however, the mechanical degradation of polymers is a disadvantage, which can be controlled efficiently by using complex in a surfactant- polymer interface. In this presented work, turbulent drag reduction (DR) efficacy of anionic Xathan gum and nonionic surfactant (PDDAC) regarding the surfactant -polymer interface was studied using a rotating disk apparatus (RDA) technique and …

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Design Of Speed-Controller For Brushless Dc-Motor Based On Grey Predictor-Pid Controller, Mohammed Ezzaldean Aug 2026

Design Of Speed-Controller For Brushless Dc-Motor Based On Grey Predictor-Pid Controller, Mohammed Ezzaldean

Engineering and Technology Journal

Brushless direct current (BLDC) motor is a permanent-magnet synchronous motor but the commutator and the brushes are replaced by electronic commutation system. This motor is characterized by many advantages compared with other motors and it being used in a wide range of applications. In BLDC motor, speed control plays an essential role; the speed-controller has to respond rapidly to command changes and to offer enough robustness against the variations of the mechanical load. In this paper, the design of Grey-PID controller is proposed as speed controller of BLDC motor where a new adaptation algorithm is suggested to update the parameters …

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Design Of Compact Multiband Microstrip Bpf Based On Fractal Open-Ring Configuration, Hayder Ahmed, Hussain Hammas, Mohammed Hussan Aug 2026

Design Of Compact Multiband Microstrip Bpf Based On Fractal Open-Ring Configuration, Hayder Ahmed, Hussain Hammas, Mohammed Hussan

Engineering and Technology Journal

Multiband bandpass filters (BPFs) are one of the core elements in the multi-services wireless communication systems. For this purpose, this paper presents a design of a compact multiband microstrip BPF design based on fractal open loop configuration. The proposed filter structure is composed of an array of equal side length open-loop resonators; each with different fractal iteration level. More specifically, the modified Minkowski fractal geometry has been adopted to be applied to the conventional open-loop rectangular resonator. The resulting filter configuration has an array of different open-loop structures corresponding to various iteration levels. The simulation of the presented filter is …

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Experimental Design Electromechanical Machine To Produce Electricity By Vertical Dynamic Load, Hosham Anead, Muhannad Khalefa, Esraa Abd Ul–Rzaq Aug 2026

Experimental Design Electromechanical Machine To Produce Electricity By Vertical Dynamic Load, Hosham Anead, Muhannad Khalefa, Esraa Abd Ul–Rzaq

Engineering and Technology Journal

In This Paper is designed electromechanical machine and runningdown the industrial bump untapp..ed so kinetic energy of the vehicle as itpasses on the bump, this mechanism working principle of vertical movement ofthe descent of bump shift about 12 cm certified so the springs and gears group(rack and pinion gear), which kills it for circulation ( Large Sprocket), whichin turn will rotate (Small Sprocket) with a chain and then rotating the Dynamoand will in turn charges the battery. Practical experiments have been anachieved on the mechanism in the road, used vehicle is kind SAIBA success ofmechanism has been proved in bearing …

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A Comparative Analysis For Congestion Mechanism In Coap And Cocoa, Hamid Hasan, Ahmed Ahmed Aug 2026

A Comparative Analysis For Congestion Mechanism In Coap And Cocoa, Hamid Hasan, Ahmed Ahmed

Engineering and Technology Journal

Internet of things (IoT) is the paradigm for internetworking devices for data exchange and control. One of the important problems facing the IoT networks is the congestion; many researchers have discussed this problem. In this research, a comparison between two congestion control mechanisms used for internet of things the (CoAP and CoCoA) is presented. The cooja simulator was used for simulating different topologies and scenarios and the packets transmitted was captured using wireshak utility program. The captured packets were analyzed using MATLAB tools. The analysis showed that the CoCoA outperform CoAP in terms of goodput, number of dropped packets and …

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Effect Of Aging Time On Deformation Behavior Of Lead-Free And Lead Base Solders Alloys, Alaa Ali Aug 2026

Effect Of Aging Time On Deformation Behavior Of Lead-Free And Lead Base Solders Alloys, Alaa Ali

Engineering and Technology Journal

The effect of aging time on the deformation behavior of lead-free and lead- based sub-mm solder alloys were investigated. Experimental results showed that the aging time (less than 4 hours) did not have any effect on the anisotropy behavior of Tin solder balls during compression processes but that is clear in other intervals time specially when the aging time increased, and the microstructure images show different grain growth in high temperature longer time and the Tin anisotropic behavior in lead-free solder alloys

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Developing Of Reliability-Centered Maintenance Methodology In Second Power Plant Of South Baghdad, Amjad Abdulghafour, Ammar Abdulwahed Aug 2026

Developing Of Reliability-Centered Maintenance Methodology In Second Power Plant Of South Baghdad, Amjad Abdulghafour, Ammar Abdulwahed

Engineering and Technology Journal

Electric equipments of power station must be operated in the state of high reliability with its responsibility in the seamless power supply. Maintenance is one of the important and most costly phases in the lifecycle of any power generation systems, to improve maintenance management and system reliability and maintain the continuity of work of the system. Reliability-Centered Maintenance (RCM) is one of the most recent maintenance techniques. In this research, an enhanced RCM methodology based on quantitative relationships implemented at system component level and the overall system reliability was applied to identify the distribution components that are critical to system …

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Production Of Lightweight Clay Bricks Using Polymer Wastes, Basil Mohammed, Sadiq Al-Ebrahimy Aug 2026

Production Of Lightweight Clay Bricks Using Polymer Wastes, Basil Mohammed, Sadiq Al-Ebrahimy

Engineering and Technology Journal

In this study, different percentages (2, 4, 6, 8, and 10% by weight of the soil) of chopped polymeric (plastic bottles with maximum particle size 2.36 mm and 1.18 mm in addition to rubber tires of 0.6 mm max particle size) wastes are incorporated with soil to produce lightweight clay bricks, to find the optimum percentage satisfying the requirements of bricks grade C using for non-structural walls (partitions).The effects of different types and percentages of the polymeric wastes on firing shrinkage, density, water absorption, compressive strength and thermal conductivity of the fired bricks were studied. Results indicate that it is …

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Analysis Of Production System Effectiveness Elements, Mohanad Sahib, Lamyaa Dawood Aug 2026

Analysis Of Production System Effectiveness Elements, Mohanad Sahib, Lamyaa Dawood

Engineering and Technology Journal

The global competition turbulent manufacturing environment, declining profit margin, customer demand for the high-quality product had a major impact on the manufacturer. The purpose of this research is to investigate the effective elements of the continuous production system at Baghdad Company for Soft Drinks as a case study consecutive for two years. Production system has been investigated by employing Overall Equipment Effectiveness (OEE) and Overall Resources Effectiveness (ORE). As a result, OEE shows low average values of (11%) at 2014 to (9%) in 2015, while ORE values show an average of (8%) in 2014 and (7%) in 2015 respectively.

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Optimization Of Dry Sliding Wear Process Parameters For Al-Mg-Si Hybrid Composites Using Taguchi Method, Israa Alkadir, Hanan Azeez Aug 2026

Optimization Of Dry Sliding Wear Process Parameters For Al-Mg-Si Hybrid Composites Using Taguchi Method, Israa Alkadir, Hanan Azeez

Engineering and Technology Journal

The aim of the presents study was to investigates the influence of different sliding velocity 1.4, 2.8, 4.2 m/sec, applied load 5, 10, N and time 10, 20, 30 min on wear rate of Al-Mg-Si alloy reinforced with varying weight fraction of TiO₂/SiC 1.5:0 ,3:0 , 4.5:0 , 0:1.5 , 0:3 , 0:4.5 , 1.5:1.5 , 3:3 , 4.5:4.5 wt.% with the same particle size (>75μm) by using pin-on-disk techniques. In this research Al-Mg-Si alloy TiO₂/SiC hybrid composites was prepared by vortex technique. The primary objective is to use taguchi method for predicting the better parameter that give the …

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Characterization Of Aa 6061–Alloy Composites Reinforced By Al2o3 Nano Particles Obtained By Stir Casting, Hussain Al Alkawi, Abdul Owaid, Batool H. Aug 2026

Characterization Of Aa 6061–Alloy Composites Reinforced By Al2o3 Nano Particles Obtained By Stir Casting, Hussain Al Alkawi, Abdul Owaid, Batool H.

Engineering and Technology Journal

The aim of this work is generated a Nano materials having good mechanical properties for 6061AA-alloy.Fivewt% of Nano particles (Al2O3) (20-30nm grain size) were adoptees (1, 1.5, 2, 2.5 and 3wt% AL2O3).The Nano composites were manufactured by stir casting technique. The mechanical properties of Nano composites were obtained at room temperature and was found that the matrix hardness is improved by 35.36%, matrix ultimate by107%, yield by36.84% and ductility by 12% at 1.5wt% AL2O3.Also it was obtained that all the mechanical properties of the Nano composites are higher than that of metal matrix. The above improvements are due to less …

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Employee Performance Assessment Using Modified Decision Tree, Hassan Jeiad, Zinah Ameen, Alza Mahmood Aug 2026

Employee Performance Assessment Using Modified Decision Tree, Hassan Jeiad, Zinah Ameen, Alza Mahmood

Engineering and Technology Journal

Decision tree algorithms are famous method in inductive learning and successfully applied for model classification and prediction. Performance evaluation in organization is one of the most important issues that are reliable due to the transition from industrial to knowledge age. This paper proposes the use of modified ID3 (Interactive Dichotomiser 3) decision tree algorithm combining with Taneja entropy instead of the original ID3 algorithm that depends on Shannon entropy which is widely used in the information theory. In fact, the original ID3 was suffer from complexity in the form of complex tree with large number of hops and nodes. The …

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Internal Model Control Using A Self-Recurrent Wavelet Neural Network Trained By An Artificial Immune Technique For Nonlinear Systems, Omar Lutfy, Rand Majeed Aug 2026

Internal Model Control Using A Self-Recurrent Wavelet Neural Network Trained By An Artificial Immune Technique For Nonlinear Systems, Omar Lutfy, Rand Majeed

Engineering and Technology Journal

This paper presents a Self-Recurrent Wavelet Neural Network (SRWNN)-based Internal Model Control (IMC) for nonlinear systems. As the internal model, a Nonlinear Autoregressive Moving Average (NARMA-L2) is employed for obtaining a forward system model. Then, this model is directly used to formulate the control law. The proposed SRWNN-based IMC is an enhanced version of a previously published Wavelet Neural Network (WNN)-based IMC scheme. Particularly, the enhancement was attained by considering three modifications, which include the use of an initialization phase for the parameters of the wavelon layer, the utilization of self-feedback connections in the wavelon layer, and the exploitation of …

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Intelligent Modeling Of Metal Oxide Gas Sensor, Omar Lutfy, Alaa Abdul-Hamead Aug 2026

Intelligent Modeling Of Metal Oxide Gas Sensor, Omar Lutfy, Alaa Abdul-Hamead

Engineering and Technology Journal

Due to the complexity of the gas detection process, traditional modeling techniques cannot provide accurate modeling performance to reproduce the behavior of this difficult process. In this paper, an intelligent modeling technique is utilized to develop an accurate model to represent the complex and nonlinear gas detection process. In particular, in this study nickel Oxide NiO gas sensor, which was specifically fabricated by a simple chemical spray pyrolysis technique. In the process, the nickel chloride hexahydrate salt was used at a concentration of (0.05 M) and a temperature of 350 ºC. Because of this process, the thickness of NiO was …

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Multiple Performance Optimization Of Carburized Steel Using Taguchi Based Moora Approach, Abbas Hussein, Laith Abbas, Asraa Hameed Aug 2026

Multiple Performance Optimization Of Carburized Steel Using Taguchi Based Moora Approach, Abbas Hussein, Laith Abbas, Asraa Hameed

Engineering and Technology Journal

In this research, a multi-response optimization based on Taguchi method-based MOORA (Multi-response optimization based on ratio analysis) is proposed for carburization process of low carbon steel. Experiments were designed using (Taguchi’s) method with six input carburization factors (carburization temperature, carburization time, tempering temperature, tempering time, activator wt.%, and quench media). Depth case and wear rate were considered as the most response measures in this study. Results of the analysis shows that the carburization temperature is the most significant variables for the optimum outcome results. The desired response measures and mathematical model were achieved and used as optimum condition tool. The …

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Multiple Access Chua Chaotic Communication System Using Real Orthogonal Matrix Approach, Ali Radhi Aug 2026

Multiple Access Chua Chaotic Communication System Using Real Orthogonal Matrix Approach, Ali Radhi

Engineering and Technology Journal

An alternative to traditional Pseudo-Noise (PN)-Sequences, one-dimension (1D) orthogonal chaotic map sequences, and three dimensional (3D) continuous chaotic systems (x,y,z) are generated by orthonormal Gram-Schmidt process. A new Orthogonal Chua Chaotic Sequences OCCSs-based Direct-Sequence/Spread-Spectrum-Code Division Multiple Access (DS/SS-CDMA) system is proposed. The proposed system combines the 3D Chua chaotic system with Real Orthogonal Matrix Approach (ROMA). Comparing to previous sequences, the OCCSs inherit all beneficial features of Chua's Circuit and ROMA scheme, such as the best correlation properties, higher capacity, Low Probability Interception (LPI), reliable security and good orthogonality. The three analytical Bit Error Rates (BERs) expressions for each orthogonal …

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Effect Of Waiting Time Before Re-Vibration On Mechanical Properties Of Fiber Reinforced Concrete, Aseel Abdulridha Aug 2026

Effect Of Waiting Time Before Re-Vibration On Mechanical Properties Of Fiber Reinforced Concrete, Aseel Abdulridha

Engineering and Technology Journal

A knowledge of the concrete vibration after casting have led to improve the mechanical properties of concrete, reduce the deformations due to creep and shrinkage and reduce the concrete permeability. At the Structural and Material Laboratories- Building and Construction Engineering Department, University of Technology, series experimental tests on prisms, cubes and cylinders were carried out to investigate the effect of waiting time after initial vibration on the flexural-tensile strength, compressive strength and splitting tensile strength of fiber reinforced concrete. The variables considered in this study were; the amount of steel fiber and waiting time after initial vibration. The test results …

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