Pub Date : 2023-10-01DOI: 10.21608/erjsh.2023.214411.1179
Mina Hanna, Sameh Habib, Khalid Abd Elghany, Tamer Mahmoud
: Engineering product designs are becoming more complicated in shape and need sustainability for longer lifetimes; there is a need for new technology like 3D printing for fabricating complex parts. Fused deposition modelling (FDM) is among the widely used additive manufacturing technology to fabricate quality products with effective expenses. This investigation considered significant methodological parameters: layer layouts/ patterns (triangular and rectilinear), wall thickness (1.2,3.6,6) and infilled density (70, 85 and 100%) analyzed to check out right into their results on compression and impact mechanical behaviors of 3D-printed Poly Lactic Acid pulse (PLA+), utilizing FDM 3D printing machine. The Central Composite Face-centered (CCF)technique was conducted to design an optimal number of experiments. The compression and impact tests were applied according to ASTM guidelines. The results showed that the Rectilinear samples were mechanically weaker than the Triangle samples, as the samples with 1.2 mm outer wall and 70% or 85% infill collapsed abruptly. The outer wall thickness was the most effective parameter for all samples, as the triangle sample with 6 mm walls and 85% infill had the
:工程产品设计的形状越来越复杂，而且需要可持续发展以延长使用寿命；因此需要新技术（如三维打印技术）来制造复杂部件。熔融沉积建模（FDM）是广泛使用的增材制造技术之一，能以有效的成本制造出高质量的产品。本研究考虑了重要的方法参数：层布局/模式（三角形和直线形）、壁厚（1.2、3.6、6）和填充密度（70、85 和 100%），利用 FDM 3D 打印机分析了它们对 3D 打印聚乳酸脉冲（PLA+）的压缩和冲击机械行为的影响。采用中心复合面中心（CCF）技术设计了最佳实验次数。根据 ASTM 准则进行了压缩和冲击试验。结果表明，直线型样品的机械强度低于三角形样品，因为外壁厚度为 1.2 毫米、填充率为 70% 或 85% 的样品会突然坍塌。外壁厚度是所有样品中最有效的参数，因为外壁厚度为 6 毫米、填充率为 85% 的三角形样品的力学性能最好。
{"title":"Study the crushing behavior of 3D printed Poly Lactic Acid samples","authors":"Mina Hanna, Sameh Habib, Khalid Abd Elghany, Tamer Mahmoud","doi":"10.21608/erjsh.2023.214411.1179","DOIUrl":"https://doi.org/10.21608/erjsh.2023.214411.1179","url":null,"abstract":": Engineering product designs are becoming more complicated in shape and need sustainability for longer lifetimes; there is a need for new technology like 3D printing for fabricating complex parts. Fused deposition modelling (FDM) is among the widely used additive manufacturing technology to fabricate quality products with effective expenses. This investigation considered significant methodological parameters: layer layouts/ patterns (triangular and rectilinear), wall thickness (1.2,3.6,6) and infilled density (70, 85 and 100%) analyzed to check out right into their results on compression and impact mechanical behaviors of 3D-printed Poly Lactic Acid pulse (PLA+), utilizing FDM 3D printing machine. The Central Composite Face-centered (CCF)technique was conducted to design an optimal number of experiments. The compression and impact tests were applied according to ASTM guidelines. The results showed that the Rectilinear samples were mechanically weaker than the Triangle samples, as the samples with 1.2 mm outer wall and 70% or 85% infill collapsed abruptly. The outer wall thickness was the most effective parameter for all samples, as the triangle sample with 6 mm walls and 85% infill had the","PeriodicalId":159365,"journal":{"name":"Engineering Research Journal (Shoubra)","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139325615","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}
Pub Date : 2023-10-01DOI: 10.21608/erjsh.2023.218062.1184
randa soliman, Tarek El Heinawy, Ahmed Abdelrasoul
{"title":"Monitoring the development of traditional architecture vocabulary responsible for natural ventilation to achieve thermal comfort in contemporary architecture","authors":"randa soliman, Tarek El Heinawy, Ahmed Abdelrasoul","doi":"10.21608/erjsh.2023.218062.1184","DOIUrl":"https://doi.org/10.21608/erjsh.2023.218062.1184","url":null,"abstract":"","PeriodicalId":159365,"journal":{"name":"Engineering Research Journal (Shoubra)","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139327284","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}
Pub Date : 2023-10-01DOI: 10.21608/erjsh.2023.217424.1183
A. Gomaa
: Manufacturing companies seek to improve competitiveness through continuous improvement in process productivity and product quality using Lean Six Sigma (LSS) methodology, which is a methodology that integrates Lean Manufacturing and Six Sigma strategies, which means that the principles, philosophies and tools of both methodologies are also united in one approach. This systematic review aims to explore the most popular topics within LSS in manufacturing over the past ten years (2014 to 2023), and to identify and analyze any gaps. Results found that LSS helps in improving quality, increasing sigma level, reducing non-added value, increasing productivity, reducing production costs, and improving customer satisfaction. Furthermore, the results can be used for a systematic literature review by researchers and manufacturing leaders before embarking on a journey of continuous improvement. Finally, this study proposed a LSS framework for the manufacturing domain, which includes 40 steps. Various tools like process mapping, KPIs, OEE, sigma level, seven quality control tools, process time analysis, value stream mapping, kaizen, 5S, brainstorming, and standard work have been used at different phases of DMAIC.
{"title":"A Systematic Review of Lean Six Sigma in Manufacturing Domain","authors":"A. Gomaa","doi":"10.21608/erjsh.2023.217424.1183","DOIUrl":"https://doi.org/10.21608/erjsh.2023.217424.1183","url":null,"abstract":": Manufacturing companies seek to improve competitiveness through continuous improvement in process productivity and product quality using Lean Six Sigma (LSS) methodology, which is a methodology that integrates Lean Manufacturing and Six Sigma strategies, which means that the principles, philosophies and tools of both methodologies are also united in one approach. This systematic review aims to explore the most popular topics within LSS in manufacturing over the past ten years (2014 to 2023), and to identify and analyze any gaps. Results found that LSS helps in improving quality, increasing sigma level, reducing non-added value, increasing productivity, reducing production costs, and improving customer satisfaction. Furthermore, the results can be used for a systematic literature review by researchers and manufacturing leaders before embarking on a journey of continuous improvement. Finally, this study proposed a LSS framework for the manufacturing domain, which includes 40 steps. Various tools like process mapping, KPIs, OEE, sigma level, seven quality control tools, process time analysis, value stream mapping, kaizen, 5S, brainstorming, and standard work have been used at different phases of DMAIC.","PeriodicalId":159365,"journal":{"name":"Engineering Research Journal (Shoubra)","volume":"323 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139326930","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}
Pub Date : 2023-10-01DOI: 10.21608/erjsh.2023.208045.1164
Anas Elsayed, mossad ali, Gehan Hamdy
: This paper presents an experimental program performed on a structural panel fabricated from glass fiber reinforced polymer (GFRP) and a wooden frame. The tested panel consists of a timber frame with the dimensions of 1200 x 600 x 25 mm covered by GFRP layers which were manufactured by a hand-layup process. Tensile and flexure tests were conducted for the GFRP specimens and for GFRP-covered wood sections to evaluate the material properties. The results showed brittle failure under average maximum load of 9.28 kN, average maximum elongation of 7.7 mm and the modulus of elasticity for the GFRP was about 2400 MPa. The obtained bending stress for GFRP-covered wood sections ranged between 90-115 MPa. Additionally, full-scale panels were tested under distributed loads until failure to study their flexural behavior. The experimental results demonstrated good mechanical and physical properties for the presented GFRP-wood panels, which renders the use of such composite GFRP-wood panel promising in prefabricated structures.
{"title":"Fabrication and Testing of a Wood-Framed FRP Structural Panel","authors":"Anas Elsayed, mossad ali, Gehan Hamdy","doi":"10.21608/erjsh.2023.208045.1164","DOIUrl":"https://doi.org/10.21608/erjsh.2023.208045.1164","url":null,"abstract":": This paper presents an experimental program performed on a structural panel fabricated from glass fiber reinforced polymer (GFRP) and a wooden frame. The tested panel consists of a timber frame with the dimensions of 1200 x 600 x 25 mm covered by GFRP layers which were manufactured by a hand-layup process. Tensile and flexure tests were conducted for the GFRP specimens and for GFRP-covered wood sections to evaluate the material properties. The results showed brittle failure under average maximum load of 9.28 kN, average maximum elongation of 7.7 mm and the modulus of elasticity for the GFRP was about 2400 MPa. The obtained bending stress for GFRP-covered wood sections ranged between 90-115 MPa. Additionally, full-scale panels were tested under distributed loads until failure to study their flexural behavior. The experimental results demonstrated good mechanical and physical properties for the presented GFRP-wood panels, which renders the use of such composite GFRP-wood panel promising in prefabricated structures.","PeriodicalId":159365,"journal":{"name":"Engineering Research Journal (Shoubra)","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139330113","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}
Pub Date : 2023-10-01DOI: 10.21608/erjsh.2023.227953.1198
Ramy El-Sayed
: The growing awareness of the environment's importance and the impact of climate change has led architects and designers to adopt sustainable building design approaches for enhancing their buildings quality. Bioclimatic design is one such approach that aims to create comfortable and energy-efficient buildings by utilizing natural resources and local climate data. This paper delves into the concept of bioclimatic design in detail highlighting different bioclimatic strategies for residential buildings that help in achieving bioclimatic design goals. The aim of this paper is to provide a systematic review that explores and categorizes the bioclimatic architecture approaches, analysis and assessment methods, and strategies in a clear and concise manner. The methodology employed in this study is a literature review of bioclimatic architectural designs in residential buildings to comprehend their design approaches, analysis and assessment methods, and strategies. This study focuses on bioclimatic design, thermal comfort, and energy efficiency. Future studies on bioclimatic building design should focus on analyzing current strategies in different climate zones, testing new technologies and materials, exploring more strategies suitable for the local climate, and evaluating the integration of bioclimatic design with other sustainable approaches to create efficient and cost-effective buildings.
{"title":"Review and Analysis of Bioclimatic Design Approach","authors":"Ramy El-Sayed","doi":"10.21608/erjsh.2023.227953.1198","DOIUrl":"https://doi.org/10.21608/erjsh.2023.227953.1198","url":null,"abstract":": The growing awareness of the environment's importance and the impact of climate change has led architects and designers to adopt sustainable building design approaches for enhancing their buildings quality. Bioclimatic design is one such approach that aims to create comfortable and energy-efficient buildings by utilizing natural resources and local climate data. This paper delves into the concept of bioclimatic design in detail highlighting different bioclimatic strategies for residential buildings that help in achieving bioclimatic design goals. The aim of this paper is to provide a systematic review that explores and categorizes the bioclimatic architecture approaches, analysis and assessment methods, and strategies in a clear and concise manner. The methodology employed in this study is a literature review of bioclimatic architectural designs in residential buildings to comprehend their design approaches, analysis and assessment methods, and strategies. This study focuses on bioclimatic design, thermal comfort, and energy efficiency. Future studies on bioclimatic building design should focus on analyzing current strategies in different climate zones, testing new technologies and materials, exploring more strategies suitable for the local climate, and evaluating the integration of bioclimatic design with other sustainable approaches to create efficient and cost-effective buildings.","PeriodicalId":159365,"journal":{"name":"Engineering Research Journal (Shoubra)","volume":"145 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139331535","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}
Pub Date : 2023-10-01DOI: 10.21608/erjsh.2023.212442.1173
A. Abdelmonem, Tamer mahmoud, Osama Abdellatif, A. Abdo
: Photovoltaic panels (PV) are considered one of the solutions to face climate change and pollution. A PV/Thermal system is used as a result to raise the output power of the PV modules by decreasing their temperatures. This work includes numerical and experimental outputs, a comparison between the electro-thermal behaviours of water and different percentages of AL 2 O 3 Nano-water (0.001 & 0.01) pass through a new back pipe structure (pancake) installed under the PV module is presented. Comsol Multiphysics and MATLAB simulators are utilized to apply the model. The experimental work runs for both Nanoparticle concentrations compared with water. The pumping power consumption is approximately 1% from the average output power of the system. The thermal results for 0.01 %wt of AL2O3 Nano-water show that the PV module temperature decreased about 14.04 % and 8.8 % compared with water and 0.001 %wt Alumina, respectively. In addition, the difference in water temperature is increased by about 21.6 % and 6.7 % for two different concentrations compared with water. That leads to enhancement in the module’s daily output power up to 14.6 % by using 0.01 wt% AL2O3 Nano fluid compared with cooling water.
{"title":"An implemented Structure for enhancing the Electrical Output Power of a Photovoltaic Module Based on Active Nano-fluid cooling Technique","authors":"A. Abdelmonem, Tamer mahmoud, Osama Abdellatif, A. Abdo","doi":"10.21608/erjsh.2023.212442.1173","DOIUrl":"https://doi.org/10.21608/erjsh.2023.212442.1173","url":null,"abstract":": Photovoltaic panels (PV) are considered one of the solutions to face climate change and pollution. A PV/Thermal system is used as a result to raise the output power of the PV modules by decreasing their temperatures. This work includes numerical and experimental outputs, a comparison between the electro-thermal behaviours of water and different percentages of AL 2 O 3 Nano-water (0.001 & 0.01) pass through a new back pipe structure (pancake) installed under the PV module is presented. Comsol Multiphysics and MATLAB simulators are utilized to apply the model. The experimental work runs for both Nanoparticle concentrations compared with water. The pumping power consumption is approximately 1% from the average output power of the system. The thermal results for 0.01 %wt of AL2O3 Nano-water show that the PV module temperature decreased about 14.04 % and 8.8 % compared with water and 0.001 %wt Alumina, respectively. In addition, the difference in water temperature is increased by about 21.6 % and 6.7 % for two different concentrations compared with water. That leads to enhancement in the module’s daily output power up to 14.6 % by using 0.01 wt% AL2O3 Nano fluid compared with cooling water.","PeriodicalId":159365,"journal":{"name":"Engineering Research Journal (Shoubra)","volume":"255 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139331460","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}
Pub Date : 2023-10-01DOI: 10.21608/erjsh.2023.215856.1182
Nadia Nofal, Hossam Ahmed, Gehan Hamdy, A. Shanour, Salma Saad
: Geopolymer concrete has developed as an environmentally sustainable construction material the gained importance due to its cement-free production process. This paper presents numerical modeling through nonlinear finite element analysis (NLFEA) of reinforced geopolymer concrete beams as well as an analytical study. The numerical modeling and nonlinear analysis are performed using commercial software ANSYS, made for previously tested geopolymer concrete (GC) beams with main reinforcement bars of steel and glass fiber reinforced polymers (GFRP), and contains two types of dispersed fibers: steel and polypropylene fibers. The numerical results are presented and compared with the published experimental findings. A reasonable correlation between numerical and experimental results is observed, thus validating the efficiency of the modeling methodology for analyzing and designing geopolymer concrete c elements .
:土工聚合物混凝土是一种环境可持续发展的建筑材料，由于其生产过程不使用水泥，因此越来越受到重视。本文介绍了通过非线性有限元分析（NLFEA）对钢筋土工聚合物混凝土梁进行的数值建模以及分析研究。数值建模和非线性分析是使用商业软件 ANSYS 进行的，针对的是之前测试过的土工聚合物混凝土（GC）梁，其主筋为钢筋和玻璃纤维增强聚合物（GFRP），包含两种类型的分散纤维：钢纤维和聚丙烯纤维。本文介绍了数值结果，并将其与已公布的实验结果进行了比较。观察到数值结果与实验结果之间存在合理的相关性，从而验证了该建模方法在分析和设计土工聚合物混凝土 c 单元方面的有效性。
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Pub Date : 2023-10-01DOI: 10.21608/erjsh.2023.211542.1169
Ahmed Emam, Maher Adam, A. Shanour
: The evaluation of torsion investigations is based on the increasing demand for the creative design of curved structural members; yet, they are limited concerning lightweight concrete beams. Lightweight concrete has many and diverse utilizations, including multistory building frames and floors, curtain walls and bridges. This paper investigated the effect of fiber on torsional behavior of lightweight concrete beam. Many variables were studied such as compressive strength of lightweight concrete, fiber type, fiber volume ratio, spacing between stirrups, diameter of stirrups and CFRP reinforcement. The numerical results showed that the increment in fiber content resulted in better mechanical properties and torsional resistance of lightweight concrete beams. The effect of carbon fiber and steel fiber is evident from the volume ratio 2%, which produced the highest ultimate torque enhancement to 77.64% and 76 % respectively. In addition, a rational approach is proposed to predict ultimate torque to develop the torsion design of lightweight concrete beams.
{"title":"NUMERICAL STUDY OF LIGHTWEIGHT CONCRETE BEAMS REINFORCED BY FIBERS AND SUBJECTED TO TORSION.","authors":"Ahmed Emam, Maher Adam, A. Shanour","doi":"10.21608/erjsh.2023.211542.1169","DOIUrl":"https://doi.org/10.21608/erjsh.2023.211542.1169","url":null,"abstract":": The evaluation of torsion investigations is based on the increasing demand for the creative design of curved structural members; yet, they are limited concerning lightweight concrete beams. Lightweight concrete has many and diverse utilizations, including multistory building frames and floors, curtain walls and bridges. This paper investigated the effect of fiber on torsional behavior of lightweight concrete beam. Many variables were studied such as compressive strength of lightweight concrete, fiber type, fiber volume ratio, spacing between stirrups, diameter of stirrups and CFRP reinforcement. The numerical results showed that the increment in fiber content resulted in better mechanical properties and torsional resistance of lightweight concrete beams. The effect of carbon fiber and steel fiber is evident from the volume ratio 2%, which produced the highest ultimate torque enhancement to 77.64% and 76 % respectively. In addition, a rational approach is proposed to predict ultimate torque to develop the torsion design of lightweight concrete beams.","PeriodicalId":159365,"journal":{"name":"Engineering Research Journal (Shoubra)","volume":"28 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139330572","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}
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