Number of Articles: 15
Hot Spot Analysis of Photovoltaic Module under Partial Shading Conditions by Using IR-Imaging Technology
Volume 39, Issue 9 , September 2021, Page 1338-1344
Abstract
The probable appearance of localized overheating (hot spot) represents one of the main matters for the reliability and safety of c-Si cells. It entails both a risk for the photovoltaic ... Read More ...The Influence of Ultrasonic Impact Peening on the Mechanical Properties of Similar Friction Stir Welded Joints of AA 7075-T73
Volume 39, Issue 9 , September 2021, Page 1345-1351
Abstract
The purpose of this study is to study the ultrasonic peening influence upon the mechanical properties of the welded joints of 3 mm AA 7075-T73. Friction stir welding (FSW) was carried ... Read More ...Optimum Parameter Selection for Milling Different Laminate Composites Made by Hand Layup with CNC Milling Machine
Volume 39, Issue 9 , September 2021, Page 1352-1361
Abstract
Recently, composite materials were widely used in different applications due to their lightweight, and good thermal and mechanical properties. In this study, an attempt to manufacture ... Read More ...Effect of Wavy Fins on Thermal Performance of Double Pass Solar Air Heater
Volume 39, Issue 9 , September 2021, Page 1362-1368
Abstract
In this paper, experimental study on double pass solar air heater with wavy fins absorber has been investigated. The fins attached to the upper and lower surfaces of the absorber. Two ... Read More ...Experimental Investigation of Dimensional Accuracy in Non-traditional Sheet Metal Spinning Process for Producing Rectangular Spun Part
Volume 39, Issue 9 , September 2021, Page 1369-1375
Abstract
The non-conventional spinning process was adopted for producing polygons, but one of the process limitations is the error between design and the final product especially with no-mandrel. ... Read More ...An Experimental Investigation of The Dynamic Effects in Upper Drum Boiler Under Steam Mass Flow Rate Variation
Volume 39, Issue 9 , September 2021, Page 1376-1383
Abstract
The dynamic effects in the “upper“ drum of the boiler (mechanical’s effects) are very complex problems and critical due to the pressure disturbance in the upper drum ... Read More ...Enhanced Mechanical and Fatigue Properties In AA5052 Via TiO_2 Nanoparticles Addition Sintering Temperature (ST)
Volume 39, Issue 9 , September 2021, Page 1384-1391
Abstract
The goal of the present work is to study the effect of different sintering temperatures (900, 1000 and 1100 ) on fatigue and mechanical characteristics of the metal matrix AA5052 reinforced ... Read More ...Electricity Generation from Hydro, Wind, Solar and the Environment
Volume 39, Issue 9 , September 2021, Page 1392-1398
Abstract
Human actions such as electricity generation are contributory causes of climate change. In a quest to reduce the emission of greenhouse gases associated with electricity generation ... Read More ...A Practical Study of The Thermal Performance of a Vacuum Tube For Solar Collector Using a Double -Sided Electronic Curtain With Nano-Fluid
Volume 39, Issue 9 , September 2021, Page 1399-1408
Abstract
In this research, a practical study and appraisal of the thermal performance for the solar collector with vacuum tube has conducted Two types of nanomaterials (aluminum and aluminum ... Read More ...The Influence of Convection Heat Transfers for Vertical Mini-Tubes Using Solvent Carbon Dioxide and Porous Media at Supercritical Pressure
Volume 39, Issue 9 , September 2021, Page 1409-1419
Abstract
Porous media and solvent CO2 at supercritical pressure were investigated experimentally to study the effect of convection heat transfer in vertical mini-tubes. Mini-tubes diameter (5 ... Read More ...Distinguish the Textures of Grasped Objects by Robotic Hand Using Artificial Neural-Network
Volume 39, Issue 9 , September 2021, Page 1420-1429
Abstract
The object identification properties with tactile sensing are valuable in interaction with the environment for both humans and robots, and it is the core of sensing used for exploration ... Read More ...Numerical Analysis of Linear Elevator Structure Using Finite Element Method
Volume 39, Issue 9 , September 2021, Page 1430-1436
Abstract
In this work, the structure of the linear elevator prototype had been investigated numerically using finite element method. The linear motor structure parameters analyzed using Maxwell ... Read More ...Experimental Study of Air Ejector Performance to Cool Agricultural Products
Volume 39, Issue 9 , September 2021, Page 1437-1444
Abstract
In this research, an ejector was designed and manufactured from brass metal as part of a cooling system to cool agricultural products, work of ejector is based on the Venturi principle. ... Read More ...Preparing Nanofluids (Al2O3) for Enhancement Performance of Photovoltaic
Volume 39, Issue 9 , September 2021, Page 1445-1453
Abstract
Photovoltaic (PV) panels produce electrical energy comparable to the cumulative amount of PV radiation generated on surface of sun. The solar modules influence on temperature of PV ... Read More ...Reducing Vibrations Generated in a Gas Turbine Model MS9001E Used in South Baghdad Power Plant Station by Improving the Design of Bearings with Damper
Volume 39, Issue 9 , September 2021, Page 1454-1462