Diyala Journal of Engineering Sciences最新文献_第6页

A Comparative Study of Two Soil Models of Tower Settlement under Eccentric Loading Nearby Slope 偏心荷载作用下近坡塔沉降两种土体模型的比较研究

Diyala Journal of Engineering Sciences Pub Date : 2022-12-18 DOI: 10.24237/djes.2022.15408

Dina M. Abd, Hassan Obaid Abbas

{"title":"A Comparative Study of Two Soil Models of Tower Settlement under Eccentric Loading Nearby Slope","authors":"Dina M. Abd, Hassan Obaid Abbas","doi":"10.24237/djes.2022.15408","DOIUrl":"https://doi.org/10.24237/djes.2022.15408","url":null,"abstract":"Evaluation of settlement of structures constructed on flat ground is an important criteria, that importance increased when these structures available near slope which increase the settlement at certain distance over than its value on flat ground. This study evaluated maximum settlement of Communication Tower foundation using finite element method, this foundation presented near sand slope with constant height and angle, and subjected to eccentric load with constant ratio of eccentricity to foundation width (e/B) equal (0.15), the eccentricity of loading caused by moment, two constitutive models adopted in the study for (Loose, Medium and Dense) sand, the study examined effect of embedment depth, relative density of sand and constitutive model on the relation between maximum settlement and ratio of distance from crest of slope to foundation width (b/B). The results showed which of the two models is more appropriate to represent the problem of study, and showed that at the distance equal and more than half of width of foundation (b/B≥0.5), the effect of the slope on the values of the maximum settlement of foundation begin to disappear, loose sand has the greatest values of maximum settlement, medium and dense sand have a convergence results from each to other. In addition, the results showed the effect of embedment depth in reducing the maximum settlement rate by an approximate range of (32.6 – 42.6) %. ","PeriodicalId":294128,"journal":{"name":"Diyala Journal of Engineering Sciences","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126659980","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}

引用次数: 0

Laser Cladding Treatment to Enhance the Corrosin Resistance and Surface Hardness by Electrophoretic Coatings to A283 Steel 激光熔覆提高A283钢电泳涂层的耐蚀性和表面硬度

Diyala Journal of Engineering Sciences Pub Date : 2022-12-18 DOI: 10.24237/djes.2022.15405

Shahbaa Ahmed Albayati, Ali Bahari, H. A. Hussien, Haneen M Alsafi, ALI ALjelif, Mahdi Mousavi, Sanaz Soufian

{"title":"Laser Cladding Treatment to Enhance the Corrosin Resistance and Surface Hardness by Electrophoretic Coatings to A283 Steel","authors":"Shahbaa Ahmed Albayati, Ali Bahari, H. A. Hussien, Haneen M Alsafi, ALI ALjelif, Mahdi Mousavi, Sanaz Soufian","doi":"10.24237/djes.2022.15405","DOIUrl":"https://doi.org/10.24237/djes.2022.15405","url":null,"abstract":"Laser cladding (LC) is a laser-based surface modification technology that has been widely adopted for the development of thin layers that operate under harsh conditions. Corrosion contributes to approximately 50% of oil and refinery equipment failures. These major risks require sophisticated methods to improve oil equipment performance. LC promotes the generation of superior properties on the substrate surface, which improves service life. To reduce corrosion failure and enhance life cycles, we conducted electrophoretic deposition (EPD) of Ti and Ni powders and directly coated them on A283 steel alloy, which was alloyed by ND-YAG LC and the remelted surface of A283 steel alloy. The microstructure, element distribution and phase analysis of the cladding sample were studied by optical microscopy, field-emission scanning electron microscopy, X-ray energy-dispersive spectrometry, atomic force microscopy and X-ray diffraction methods. The results indicated that the coatings with fine metallurgical bonding to the substrate comprised major stable FeTi and FeNi and illustrated two different regions of solidification microstructures. The LC process and powder feeding by EPD were applied, which improved the mechanical properties, corrosion behaviour, phase transformation and structural optimisation of the surface microstructure of the laser mixed zone. Melting of the coated sample showed that the coating produced by laser treatment had a smooth top surface. In addition, we have a proven case of surface treatment with a laser that delivered the required performance. Moreover, this treatment is a more environmentally friendly alternative to traditional surface preparation treatments.","PeriodicalId":294128,"journal":{"name":"Diyala Journal of Engineering Sciences","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127896995","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}

引用次数: 0

A Parametric Study on Behavior of Elliptical Cantilever Deep Beams 椭圆悬臂深梁性能的参数化研究

Diyala Journal of Engineering Sciences Pub Date : 2022-12-18 DOI: 10.24237/djes.2022.15403

Baidaa N. Hasan, K. S. Abdul-Razzaq, Adham Abdulsattar Hameed

{"title":"A Parametric Study on Behavior of Elliptical Cantilever Deep Beams","authors":"Baidaa N. Hasan, K. S. Abdul-Razzaq, Adham Abdulsattar Hameed","doi":"10.24237/djes.2022.15403","DOIUrl":"https://doi.org/10.24237/djes.2022.15403","url":null,"abstract":"This parametric study used finite element method (ETABS 2019), on 20 elliptical reinforced concrete cantilever deep beam specimens that have rectangular sections. Five parameters were taken into consideration: beam height, beam width, concrete compressive strength, load position and load type. Results showed that when the beam height was increased by 12%–66.5%, the negative and torsional moments and load capacity increased by about 11.23%–76.33%, 11.2%–77% and 11.1%–78%, respectively, whereas deflection decreased by about 15%–39%. The negative and torsional moments and load capacity increased by 26.13%–166.53%, 27%–172.5% and 28%–180%, respectively, and a decrease in deflection of about 1.73%–2.3% took place when beam width increased by about 14.3%–81%. In addition, increasing the compressive strength of concrete by 7.5%–36% led to an increase in the negative moments, torsional moments, load capacity, and deflection by about 8.22%–19.2%, 8.7%–20.4%, 9.4%–22% and 4.7%–7.1%, respectively. When changing the load type from concentrated to uniformly distributed over a third of the span’s length, two-thirds of the span’s length and then over the full span’s length, the negative moments increased by 5.23%, 8.47% and 52.67%, whereas torsional moments decreased by 1.1%, 1.12% and 16%, respectively. Finally, placing the concentrated load at a distance of 0.75, 0.5 and 0.25 of the span lengths led the negative moments to increase by 56.9%, 102.3% and 110%, respectively, whereas torsional moments decreased by 8.64%, 25%, and 58.3%, respectively. The load capacity increased by 87.5%, 243.75% and 556.25%, respectively, accompanied by a decrease in the deflection of the free end by 3.24%, 17.65% and 49.8%, respectively.","PeriodicalId":294128,"journal":{"name":"Diyala Journal of Engineering Sciences","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132329416","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}

引用次数: 0

Studying Corrosion Resistance of Different Roofing Sheets in Ghana 加纳不同屋面板材的耐腐蚀性能研究

Diyala Journal of Engineering Sciences Pub Date : 2022-12-18 DOI: 10.24237/djes.2022.15404

Stephen Agyei, K. Owusu-Sekyere, Mark Adu Gyamfi

{"title":"Studying Corrosion Resistance of Different Roofing Sheets in Ghana","authors":"Stephen Agyei, K. Owusu-Sekyere, Mark Adu Gyamfi","doi":"10.24237/djes.2022.15404","DOIUrl":"https://doi.org/10.24237/djes.2022.15404","url":null,"abstract":"Background: The request for housing in Ghana is great and as a result the selection of durable roofing sheets have become very significant as roofing plays a vital role in building construction. The goal of the investigation was to see how corrosive compounds affected the most predominant roofing sheets on the Ghanaian market. One-star galvanized Japan [G1*Jap], Galvanized Coated [GC], Aluzinc three star galvanized [AlZn3*], One Star Galvanized Indi [G1*Ind], and Aluminium [Al] were the most common on the market and were therefore used. The corrosion experiments were carried out by putting the various samples in five jars containing various chemicals for varying amounts of time. A computer interfaced Optical Microscope (Leica DM 2500M) was employed to study the surface microstructures of the corroded surfaces, with the corrosion rates per day being determined.\u0000Results: Average corrosion rates for One-star Galvanized Japan [G1*Jap] roofing sheets were observed to be the most corrosive resistant whiles [AlZn3*] roofing sheets were the least resistant to corrosion. Generally, G1*Jap roofing sheet stood out as the best roofing sheet in terms of resistance to corrosion.\u0000Conclusion: These numbers lead to the conclusion that when compared to the other roofing sheets, G1*Jap roofing sheets were shown to be the most corrosion resistant. The most corroded roofing sheets were found to be Aluzinc three star galvanized [AlZn3*] roofing sheets.","PeriodicalId":294128,"journal":{"name":"Diyala Journal of Engineering Sciences","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131582304","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}

引用次数: 0

Biomechanical Analysis of The Effects of Distance Between Bone and Locking Compression Plate on Construct Stability 骨与锁定加压板间距离对假体稳定性影响的生物力学分析

Diyala Journal of Engineering Sciences Pub Date : 2022-12-18 DOI: 10.24237/djes.2022.15409

Muath F. Abd ul Karim, Zaid S. Hammoudi

引用次数: 0

Thermal Performance Enhancement of Triplex Tube Heat Storage Using Metal Foam 利用金属泡沫提高三管蓄热性能

Diyala Journal of Engineering Sciences Pub Date : 2022-12-18 DOI: 10.24237/djes.2022.15406

Jihad Majeed, J. Abdulateef, Michał Dudek

引用次数: 0

Interactive Modelling of lost Landmarks – Qishla of Mosul A Case Study 失落地标的互动建模——摩苏尔奇什拉的案例研究

Diyala Journal of Engineering Sciences Pub Date : 2022-12-18 DOI: 10.24237/djes.2022.15407

Raghad Abdulrahman, Emad Hani Al-Allaf

{"title":"Interactive Modelling of lost Landmarks – Qishla of Mosul A Case Study","authors":"Raghad Abdulrahman, Emad Hani Al-Allaf","doi":"10.24237/djes.2022.15407","DOIUrl":"https://doi.org/10.24237/djes.2022.15407","url":null,"abstract":"The recent technological development in many fields has made a significant contribution to the reconstruction of a historical buildings. The matter becomes complicated when the buildings are destroyed, and it is required to collect as many different sources of information as possible. The research problem lies in the absence of studies on reconstructing the lost historical landmarks in the old Mosul city in an interactive 4D modelling. This study aims to develop a strategy to reconstruct historical cultural landmarks in an interactive digital way, based on the collection and integration of multiple sources of information, in addition to an attempt to extrapolate the lost elements based on similar data and various available information, and all this using available software techniques to create interactive environments. To produce documents that can be used in the process of restoring the real origin as an advanced engineering document, used for future periodic maintenance and preservation purposes. The study seeks to reconstruct the military Qishla building in the completely destroyed in Mosul, as a case study, using multiple tools and techniques, in parallel with the techniques Modern digital, and various CAD programs for engineering and parametric drawing and Ar-media augmented reality app.","PeriodicalId":294128,"journal":{"name":"Diyala Journal of Engineering Sciences","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123523050","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}

引用次数: 0

Experimental Investigation of Soiling and Temperature Impact on PV Power Degradation: North East-Iraq as A Case Study 污染和温度对光伏发电退化影响的实验研究——以伊拉克东北部为例

Diyala Journal of Engineering Sciences Pub Date : 2022-12-18 DOI: 10.24237/djes.2022.15402

Gufran Adnan Jendar, Layth Abed Hasnawi, Qusay Hassana, Bartosz Ceran, Abdulmajeed Mohamad

引用次数: 1

Efficiency of Pre-Treated Immobilized Chara Algae (C. vulgaris) for Biosorption of Copper and Lead from Aqueous Solutions 预处理固定化Chara Algae (C. vulgaris)对水溶液中铜和铅的生物吸附效果

Diyala Journal of Engineering Sciences Pub Date : 2022-12-18 DOI: 10.24237/djes.2022.15412

Salah N. Farhan

{"title":"Efficiency of Pre-Treated Immobilized Chara Algae (C. vulgaris) for Biosorption of Copper and Lead from Aqueous Solutions","authors":"Salah N. Farhan","doi":"10.24237/djes.2022.15412","DOIUrl":"https://doi.org/10.24237/djes.2022.15412","url":null,"abstract":"The present study evaluates the potential of chemically modified, immobilized Chara algae (C. vulgaris) to remove copper and lead from aqueous solutions. Chara algae were prepared and studied for their ability to remove heavy metal ions prepared solutions. In a batch mode, several factors affecting the adsorption process such pH, temperature, contacting period and algal dose on adsorption efficiency were studied. Results showed that the metal adsorption process takes place quickly at pH values (5.0-6.0), temperature level (25-30) oC and the order of the accumulated metal ions is Cu>pb.The results showed that the handling with low concentration of nitric acid at 0.05 normality was effective in the process of desorbing metal ions. So as for regeneration of algae, 0.2 M sodium hydroxide is very effective. The regenerative algae were used for five cycles of biosorption, without losing its demineralization efficacy. FTIR absorption spectroscopic analyzes showed that all groups that present in the algae are responsible for the main biological absorption of metal ions.Adsorption process specifications are more effective when using modification processes, as the maximum adsorption of algae for both lead and copper was within a range of 6.5-10.3 mg per gram of algae when using the alkaline treatment. While the acid treatment reduced the amount of adsorbent by 4.2-5.8 mg per gram algae; The adsorption process is fast and occurs by 90% within the first 15 min. Heavy metal adsorption was observed at very low levels at pH values as low as 2.0. Algae are effective in removing lead, copper and other light metal ions from wastewater.","PeriodicalId":294128,"journal":{"name":"Diyala Journal of Engineering Sciences","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126695245","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}

引用次数: 0

The Effect of Steel Fiber Content on the Behavior of Reinforced Concrete Bubbled Slab: Experimental Investigation 钢纤维掺量对钢筋混凝土气泡板性能影响的试验研究

Diyala Journal of Engineering Sciences Pub Date : 2022-09-01 DOI: 10.24237/djes.2022.15309

Ahmed S. hakeem, Ahmed A. Mansor, Wissam D. Salman, Ahlam S. Mohammed

{"title":"The Effect of Steel Fiber Content on the Behavior of Reinforced Concrete Bubbled Slab: Experimental Investigation","authors":"Ahmed S. hakeem, Ahmed A. Mansor, Wissam D. Salman, Ahlam S. Mohammed","doi":"10.24237/djes.2022.15309","DOIUrl":"https://doi.org/10.24237/djes.2022.15309","url":null,"abstract":"Utilizing Bubbles in the slab is a revolutionary way to get rid of the concrete in the middle of a traditional slab; since this concrete serves no structural purpose and adds a lot of dead weight to the structure, using a bubble in the slab will weaken the slab and reduce its efficiency by (10%), this research presents an experimental study of steel fiber effects on bubble slabs and checks if steel fiber covers the messing efficiency and the effect on the type of failure. The program for the experiment is to test five slabs with (1760 mm × 420 mm × 125 mm) dimensions, divided into one solid slab without bubbles and steel fiber, one bubble slab without fiber, and three bubble slabs with three different fiber percentages, the experimental results shows that the three steel fiber bubble slabs (0.5%S.F.B.S, 1%S.F.B.S, 1.5%S.F.B.S) show an increase in yield load and ultimate load by (16%,20%,26.3%) for yield load and (14.5%,20.26%,25.2%) for the ultimate load respectively compared with the solid slab (S.S), and increases yield load and ultimate load by (31.8%,36.36%,40.9%) for yield load and (26.8%,33.2%, 39.8%) for ultimate load compared with bubble slab (B.S), for first crack load in solid slab (S.S) and bubble slab (B.S) first crack appeared at (13kN, 11kN) and for steel fiber bubble slabs (0.5%S.F.B.S, 1%S.F.B.S, 1.5%S.F.B.S) first crack appeared at (18 kN, 22 kN, 24 kN) respectively and change of type of failure from brittle sudden shear failure for the bubble slabs to ductile flexural failure.","PeriodicalId":294128,"journal":{"name":"Diyala Journal of Engineering Sciences","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130985458","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}

引用次数: 1