Misan Journal of Engineering Sciences最新文献

{"title":"Ferrocement-Timber Composite Beams Loading capacity","authors":"None Karrar K. Abdul Hussein, Abdulkhaliq Jaafer, None Murtaza A. Raheemah","doi":"10.61263/mjes.v2i1.29","DOIUrl":"https://doi.org/10.61263/mjes.v2i1.29","url":null,"abstract":"This paper presents an experimental study of simply supported ferrocement timber composite members. An adherently bound link is investigated. As a shear connector layer, an appropriate length for this type of composite beam was chosen to study the effect of shear strength on the impact of one point load (1.2 m). Sikadur 31 thixotropic epoxy resin adhesive is used. The research's primary goal is to collect data and provide information on the structural behavior of proposed ferrocement timber composite (FTC) beams. The thickness and width of timber beams, the presence and absence of a bonding layer on the shear connector, and the influence of sagging and hogging bending moments were also investigated. FTC beams are a relatively new civil engineering solution, and their behavior should be investigated to develop relevant methods for calculating their resistance. Two push-out tests were used to tentatively resolve the connector's slip and pinnacle load limits. The stiffness and strength of the connection utilized to bind a ferrocement slab to a timber beam were investigated by the authors. These criteria are critical for composite beam planning because the solidity and quality of a composite beam framework's connections determine its performance. A three-point loading test was performed on the composite beam specimens. Measurements also demonstrate that the connection is near-perfect because the slide is minimal during the test (except at failure). Converting from sagging to It has been witnessed that converting from sagging to hogging bending reduces the ultimate load by up to 24%. The suggested beams' loading It has been witnessed that Converting from sagging to hogging bending reduces the ultimate load by up to 24%.shown to be excellent when compared to their weight in tests. Epoxy resin (Sikadur 31) can be used to provide adequate bonding between the components. The highest gain in the loading capacity was 48% when the timber thickness was increased from 90 to 190 mm.","PeriodicalId":253933,"journal":{"name":"Misan Journal of Engineering Sciences","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135302515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental Study on The Effect of Size, Type, and Replacement Ratio of Recycled Aggregate on The Mechanical Properties of Reactive Powder Concrete","authors":"Sarah Mohammed, Abdulamir Atalla Karim, None Ansam Z. Thamer","doi":"10.61263/mjes.v2i1.43","DOIUrl":"https://doi.org/10.61263/mjes.v2i1.43","url":null,"abstract":"This paper presents an experimental investigation of the mechanical characteristics of Reactive Powder Concrete (RPC) and Recycled Aggregate Reactive Powder Concrete (RPC-RA), utilizing two types of recycled aggregate (RA), recycled concrete aggregate (RCA), and recycled concrete brick aggregate (RCBA) as alternative aggregates. A series of sixteen RPC and RPC-RA mixes were prepared and tested. A reference RPC mix without RA was tested to determine the maximum compressive strength of 128.17 MPa, the tensile strength of 15.56 MPa, and the flexural strength of 25.90 MPa. Then, the study examines twelve different mixes of RPC-RA, each with RCA with maximum particle sizes of 0.6, 1.18, 2.36, and 4.75 mm and replacement ratios of 20%, 40%, and 60%, to study the effects of varying replacement ratios of the RCA and various maximum particle sizes. Additionally, three mixes of RPC-RA are investigated using RCBA with a maximum particle size of 0.6 mm and replacement ratios of 20%, 40%, and 60%. The use of RA resulted in various percentages of reduction in compressive, splitting, and flexural strength, as shown in the results of the study.","PeriodicalId":253933,"journal":{"name":"Misan Journal of Engineering Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135302517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design of Water Pumping Mechanism using Wind Energy (Analysis Study)","authors":"Nabeel Najim, F. Hussany, Sara Flayh","doi":"10.61263/mjes.v1i2.35","DOIUrl":"https://doi.org/10.61263/mjes.v1i2.35","url":null,"abstract":"In the past, the main sources of energy were coal, oil, natural gas, nuclear energy and wood. All of these sources are limited in quantities and depleted. Moreover, they are considered the main cause of environmental pollution. Due to their limitations and their negative effects on health and environment, attention was turned to alternative energy sources and their uses in various applications. One of those sources is wind energy which is clean and available throughout Earth's geography and today. Wind energy is used in many applications where it can be converted into electrical energy, stored and transmitted, and it can also be converted into a mechanical form that is used directly in machines like water pumps. The main objective of this study is to design a wind-powered water pumping turbine. One of the most important results of the study is the design of a pump to raise water from a well using wind energy to irrigate farms with an area of ​​(2.5) hectares. A two-piston pump was designed, the first to withdraw water from the well and the second to Push the water into the reserve tank. (Irrigation occurs during periods of unavailability of rain water). Use Programmes in study is matlab for analysis and solidworks for 3d pump.place of work is Iraq, Almousel.","PeriodicalId":253933,"journal":{"name":"Misan Journal of Engineering Sciences","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125642395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical Investigation of Aggregates Size and Volume Fraction on Gas Permeability of 3D Meso-Scale Concrete","authors":"Hayder Al-khazraji, Nathan Benkmoun, M. Choińska, A. Khelidj","doi":"10.61263/mjes.v1i2.24","DOIUrl":"https://doi.org/10.61263/mjes.v1i2.24","url":null,"abstract":"In this paper, the influence of aggregate size and volume fraction on the permeability properties of meso-scale concrete is investigated. Three volume fractions of aggregates are investigated, varying from 10, 20 and 30 %. Furthermore, three aggregate sizes are examined, 10, 14, and 16 mm. In this work, numerical results provide some indications: increasing volume fraction leads to increased fracture energy, tensile stress, and crack opening. The results show that increasing crack width and decreasing volume fraction lead to an increase in gas permeability.","PeriodicalId":253933,"journal":{"name":"Misan Journal of Engineering Sciences","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114650942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Estimation of Downstream Piping of a Dam (Case Study: Dewerige Dam- Iraq)","authors":"Zahraa Resul, Riaed S. Jassem","doi":"10.61263/mjes.v1i2.20","DOIUrl":"https://doi.org/10.61263/mjes.v1i2.20","url":null,"abstract":"The study deals with the geotechnical and hydrological problems in Dewerige dam. It's a new hydraulic structure constructed on Dewerige river in the southeast of Misan governorate, which represents a multipurpose. The dam is used for flooding control, water storage for irrigation, and recharges groundwater. The current study aimed to study seepage quantity under a small concrete dam (weir). SEEP/W software has been used to solve a simulation model at steady stat to evaluate piping downstream (Toe) in saturated soil. Uplift pressure, seepage velocity, hydraulic gradient, and piping safety factor were calculated in SEEP/W. The model results explain that the piping safety factor was (1.7), Therefore, the dam is relatively safe against piping problems in flooding conditions.","PeriodicalId":253933,"journal":{"name":"Misan Journal of Engineering Sciences","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121511715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CFD Study of Cuttings Transport in Vertical Rotation Drill Pipe for Multi Muds","authors":"Sara J Flayh, Ahmed Alshara, Hussein S Sultan","doi":"10.61263/mjes.v1i2.13","DOIUrl":"https://doi.org/10.61263/mjes.v1i2.13","url":null,"abstract":"The ability of drilling fluids to clean the borehole is considered an important factor in choosing drilling mud. Which is affected by many parameters such as mud type, cutting size, cutting concentration in the mud, drill pipe rotation speed, and mud inlet velocity. The present research investigated the influence of drilling fluid that flow into the rotary pipe and coming out of the annulus with the influence of the above mentioned parameters on the cutting transport ratio (CTR). A Computational Fluid Dynamics (CFD) software ANSYS FLUENT 18.2 has been utilized to simulate a model of 3-D two phase (solid-liquid) turbulent flow, steady-state, with stander k-ϵ in a vertical wellbore. The momentum and continuity equations, which are the governing equations, are numerically resolved using CFD with fluent soft package. The results are presented as follows: streamline , contours. The results show that with a decrease in each of the cutting diameter, cutting concentration in the mud, and cutting density, the CTR by mud will increase. Moreover, as the drill pipe rotation speed increases and the mud inlet speed increases, the cutting transport ratio will increase.","PeriodicalId":253933,"journal":{"name":"Misan Journal of Engineering Sciences","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115442886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination of The Best Box-Jenkins’ Seasonal Model to Inflows of Reservoir of Bekhme Dam","authors":"Muammar Attaee, Sabah F. H. Alhamdi, Firas J. kadhim, Musab S. Al-Bayati","doi":"10.61263/mjes.v1i2.30","DOIUrl":"https://doi.org/10.61263/mjes.v1i2.30","url":null,"abstract":"Prediction of water inflow to a reservoir is of great interest in the policy of the reservoir operation throughout the year. When significant amounts of inflow series entering to the reservoir are nondeterministic events, the utilization of stochastic models to check the reliability of the recorded data and forecast the future events become preferable. One of the most powerful and widely used methodology for forecasting time series is the class of models called the Box-Jenkins models. In this study, time series analysis was applied to records of 69 monthly mean inflows to Bekhme reservoir, in the northern part of Iraq, for the water year period from 1933 to 2006. Nine multiplicative seasonal models were fitted to this series; these were the seasonal autoregressive integrated (SARI) (1, 1, 0) × (1, 1, 0)12, (2, 1, 0) × (1, 1, 0)12, and (1, 1, 0) × (2, 1, 0)12 models, the seasonal autoregressive integrated moving average (SARIMA) (1, 1, 1) × (1, 1, 1)12, (2, 1, 2) × (1, 1, 1)12, and (1, 1, 1) × (2, 1, 2)12 models, and the seasonal integrated moving average (SIMA) (0, 1, 1) × (0, 1, 1)12, (0, 1, 2) × (0, 1, 1)12, and (0, 1, 1) × (0, 1, 2)12 models. The unconditional sum of squares method was used to estimate the parameters of the models and to compute the sum of squared errors for each one. It was found that the best model which corresponded to the minimum sum of squared errors was the SIMA (0, 1, 1) × (0, 1, 1)12 model. The estimated moving average parameters of this model were 0.378 and 0.953 for both θ and Θ respectively. The adequacy of this model was checked by plotting the normalized cumulative periodogram which does not indicate nonrandomness of the residuals. Forecasts of monthly inflow for the period from October, 2002, to September, 2006 were graphically compared with observed inflow for the same period and since agreement was very precise, adequacy of the selected model was confirmed.","PeriodicalId":253933,"journal":{"name":"Misan Journal of Engineering Sciences","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115593221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Quantitative Assessment of Five Geosites Locations in Northeast Misan Southeast Iraq by Using Satellite Images and Field Survey","authors":"Maser M, Sahar Almulla, Riaed S. Jassem","doi":"10.61263/mjes.v1i2.32","DOIUrl":"https://doi.org/10.61263/mjes.v1i2.32","url":null,"abstract":"Sentinel satellite images are enhanced using Erdas-2014 and analyzed by GIS techniques to distinguish the main geological features in the study area.  Satellite image is processed to select and determine several geological and geomorphological features that are evident through a Sentinel image as a Geopoint. These Geopoints were checked in the field survey to be geosite. Field techniques include phtogeological and terrestrial photogrammetry. Quantities’ assessment of geological heritage in five geosite in Potential Geopark (Telal AL Band ). Scientific, educational, functional, and touristic categories values were calculated for each Geosite. The Results of the quantitative assessment depend on questionnaire data for three types of audiences: university students, Government circles, researchers, tourists then, and previous geoscientific studies.   The infrastructures like paved roads, bridges, and security, played a vital role in the scores in different studied sites. The infrastructures of geoutorism need to devselop through local government funding and community people investments. The area of east Missan required more professional promoting efforts to develop geoeducation and geotourism. The results of the study show the Telal AL Band geopark of geoeducation, geotourism, and economical importance","PeriodicalId":253933,"journal":{"name":"Misan Journal of Engineering Sciences","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128908949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study The Effect of Proppant Concentration of Screen-Out Phenomena While Hydraulic Fracture Job","authors":"Mohammed Abdul AlHumairi, Samera Hamad Allah2","doi":"10.61263/mjes.v1i2.16","DOIUrl":"https://doi.org/10.61263/mjes.v1i2.16","url":null,"abstract":"screen out is a blocking of the fracture path caused by bridging the path or accumulation of the proppant inside the fracture, clumping or lodging of the (solid particles) proppant across the hydraulic fracture width that causes to restrict formation fluid to flow into the hydraulically fractured formation. To avoid the screen out happening needing to save fracturing fluids, hydraulic horsepower. Conditions that leading to screen out during the hydraulic fracturing job in a well, such as, the ratio between the fracture widths to particle diameter that called (β), proppant concentration,  and wall roughness. The effects of these factors are investigated experimentally in the present work by building an apparatus that meet the shape of the real hydraulic fracture. The plugging time were measured and monitored through glass windows on both sides of the apparatus to follow the behavior of the proppant inside the fracture during the flow of the fracturing fluid or when the proppant plugs the fracture. To study the effect of the fracture wall roughness on the screen out phenomena, apparatus was build to get two different fracture shapes, to meet the real fracture wall in reality. Through the relation between the different proppant concentration and the plugging time, one can indicate on the graph the plugging region and non plugging region for different values of β, proppant concentration and fracture shape, in order to avoid the screen out. During designing the hydraulic fracture, the values of β were very important factor that can lead to screen out, through the results found that when β=1, the screen out happened very fast even at low proppant concentration, but for β=2, 3 and 4 the screen out depends on the proppant concentration and fracture shape. For β=5 it was found that, there is no screen out occurring for wide range of proppant concentration. The effect of hydraulic fracture wall roughness is important because it effect the speed of the suspension when passing through the fracture.","PeriodicalId":253933,"journal":{"name":"Misan Journal of Engineering Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130374370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanical and Biological Behaviour of 3D Printed PCL-Based Scaffolds Fabricated by Fused Deposition Modelling for Bone Tissue Engineering: A Review of Recent Advances","authors":"Mohammed Razzaq Mohammed","doi":"10.61263/mjes.v1i1.18","DOIUrl":"https://doi.org/10.61263/mjes.v1i1.18","url":null,"abstract":"The imperative need for alternative approaches to organ transplantation, replacing or regenerating damaged tissues is the key driving force for the remarkable development in tissue engineering. It can be precious in saving people who suffer from the critical shortage of organ donation. Such a strategy can repair injured body parts and tissues by using biomaterials, cells, and bioactive agents. Even though numerous scaffold manufacturing techniques have been available for bone regeneration, the three-dimensional (3D) printing approach can provide scaffolding with delicate features that may not be obtainable in other manufacturing strategies. For instance, when a 3D printer is used, it is possible to easily adjust scaffold pore architecture and size, porosity, and material alignment, forming customizable and defect-fillable scaffolds, which helps control the mechanical behavior of cellular response. The most prominent material used in scaffolding and printing is polycaprolactone (PCL), owing to its considerable potential and capabilities. It has favorable properties for the fabrication of bone tissue engineering scaffolds, such as biocompatibility, viscoelasticity, and affordability. Nonetheless, some inherent drawbacks of this polymer that limit its use in this field are detected, including inadequate mechanical performance, cell adhesion, osteoinductive deficiency, hydrophobicity, and low degradation rate. The incorporation of other materials within this polymer to form composites, on the other hand, can contribute to alleviating the negative influence of the PCL's undesirable characteristics. Improving the mechanical and biological behaviors of PCL-based scaffolds allows these structures to be utilized for tissue engineering since such composites can promote cell adhesion and differentiation, mimic anatomical characteristics of native bone, and can have superior mechanical performance. In this review, the latest advancements in printing intricate geometries 3D PCL-based composites using bioactive ceramics and/or biopolymers by fused deposition modeling (FDM) for bone tissue engineering will be explored, particularly from a morphological, mechanical, and biological perspective.","PeriodicalId":253933,"journal":{"name":"Misan Journal of Engineering Sciences","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128821013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}