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Strain capacity and flexural strength behavior of bendable concrete produced with different polymeric fibers 用不同聚合物纤维生产的可弯曲混凝土的应变能力和抗弯强度行为
Engineering and Technology Journal Pub Date : 2024-01-09 DOI: 10.30684/etj.2023.142430.1531
I. Al-Mulla, Tareq S. al-Attar, Abbas Al-Ameeri, Ammar Al-Rihimy
{"title":"Strain capacity and flexural strength behavior of bendable concrete produced with different polymeric fibers","authors":"I. Al-Mulla, Tareq S. al-Attar, Abbas Al-Ameeri, Ammar Al-Rihimy","doi":"10.30684/etj.2023.142430.1531","DOIUrl":"https://doi.org/10.30684/etj.2023.142430.1531","url":null,"abstract":"composite concrete of three grades of strengths, 30, 45, and 60 MPa, were produced. Results revealed that mixes of 60 MPa with 2% PVA fibers recorded the highes t strain capacity, which reached (17.6%) com pared to mixes of 60 MPa with 2% PP fibers. The maximum enhancement in the flexural strength was (4.3%),(6%), and (23%) for mixes of 30 MPa, 45 MPa and 60 MPa. This enhancement may open the horizon for using high-strength engineered cementitious composite concrete reinforced with PVA fibers in structural applications exposed to flexural strength, providing a lighter weight due to the exclusion of bar reinforcement. Also, its high strain capacity reduces the tendency for microcracks formation. The standard deviation error bars for the average flexural strengths of bendable concrete mixes with different fiber contents and types show no differences when comparing the same strength and fiber types. For example, mixes of 60 MPa with PVA fibers give less than 2 MPa standard deviation when compared for different fiber volume fractions.","PeriodicalId":507832,"journal":{"name":"Engineering and Technology Journal","volume":"29 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139444059","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
Design and manufacturing of custom 3D printed bone implants 设计和制造定制 3D 打印骨植入物
Engineering and Technology Journal Pub Date : 2024-01-09 DOI: 10.30684/etj.2023.143788.1609
Z. Neamah, L. Al-Kindi, Ghassan Al-Kindi
{"title":"Design and manufacturing of custom 3D printed bone implants","authors":"Z. Neamah, L. Al-Kindi, Ghassan Al-Kindi","doi":"10.30684/etj.2023.143788.1609","DOIUrl":"https://doi.org/10.30684/etj.2023.143788.1609","url":null,"abstract":"","PeriodicalId":507832,"journal":{"name":"Engineering and Technology Journal","volume":"53 14","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139442068","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
Antibacterial improvement with multilayer of bio-composite coatings produced by electrophoretic deposition 通过电泳沉积生产的多层生物复合涂层改善抗菌性能
Engineering and Technology Journal Pub Date : 2024-01-08 DOI: 10.30684/etj.2023.143475.1588
Noor AL-Ali, Makarim Abdulkareem, I. Anoon
{"title":"Antibacterial improvement with multilayer of bio-composite coatings produced by electrophoretic deposition","authors":"Noor AL-Ali, Makarim Abdulkareem, I. Anoon","doi":"10.30684/etj.2023.143475.1588","DOIUrl":"https://doi.org/10.30684/etj.2023.143475.1588","url":null,"abstract":"of","PeriodicalId":507832,"journal":{"name":"Engineering and Technology Journal","volume":"38 23","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139448316","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
Life cycle economic comparison between rigid and flexible pavement: a case study for the construction of wajen- garin barkamawa-dugurawa road in kano state nigeria 刚性路面与柔性路面的生命周期经济比较：尼日利亚卡诺州 Wajen- garin barkamawa-dugurawa 公路建设案例研究
Engineering and Technology Journal Pub Date : 2024-01-07 DOI: 10.30684/etj.2023.144541.1637
Rowland Adewumi, Wasiu Sulaiman, Adeniyi Shola
{"title":"Life cycle economic comparison between rigid and flexible pavement: a case study for the construction of wajen- garin barkamawa-dugurawa road in kano state nigeria","authors":"Rowland Adewumi, Wasiu Sulaiman, Adeniyi Shola","doi":"10.30684/etj.2023.144541.1637","DOIUrl":"https://doi.org/10.30684/etj.2023.144541.1637","url":null,"abstract":"pavement design, such as using a concrete wearing course, a bitumen emulsion tack coat, a concrete binder course, and an MC 1 cutback bitumen prime coat. The expenditure associated with the construction of flexible pavement amounts to 1,760,293,155.18 N, while the anticipated cost for the construction of rigid pavement is projected at 2,725,765,337.00 N. In percentage terms, rigid pavement costs 64% more than flexible pavement. Flexible pavement costs are based on supply, construction, and finish unit rates. The projected flexible pavement cost includes labor, materials, and plant expenditures. Reinforcing and concrete costs are estimated in rigid pavement studies. The analysis examines plant, people, and permanent material expenses. The research gives detailed pavement structural design and construction cost estimates for the road project, enabling informed pavement structure decisions.","PeriodicalId":507832,"journal":{"name":"Engineering and Technology Journal","volume":"31 20","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139448530","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 Impact of Magnetic Abrasive Finishing (MAF) Process Parameters on the Microhardness of Stainless Steel SUS420 Bubble Cups 磁性磨料精加工（MAF）工艺参数对不锈钢 SUS420 气泡杯显微硬度的影响
Engineering and Technology Journal Pub Date : 2024-01-03 DOI: 10.30684/etj.2023.142890.1563
Athraa Ahmed, S. Shather
{"title":"The Impact of Magnetic Abrasive Finishing (MAF) Process Parameters on the Microhardness of Stainless Steel SUS420 Bubble Cups","authors":"Athraa Ahmed, S. Shather","doi":"10.30684/etj.2023.142890.1563","DOIUrl":"https://doi.org/10.30684/etj.2023.142890.1563","url":null,"abstract":"improve microhardness (MH) most are, in order, gap distance, voltage, time, p article size, and spindle speed. The percentage change in microhardness (%∆MH) increases with higher voltage and time values and decreases with higher particle size and spindle speed values. This study observes an exception to this trend for the gap distance value of 1.2 mm. The use of smaller particle sizes in the range of (20-63) µm showed the most significant enhancement in microhardness (MH) at 21.20%, whereas larger particle sizes (125-250 µm) exhibited lower enhancement in microhardness (MH) at 4.12%.","PeriodicalId":507832,"journal":{"name":"Engineering and Technology Journal","volume":"46 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139451837","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
Cold sintering process of hydroxyapatite derived from natural bone and co-precipitation method: a comparative study 源自天然骨骼的羟基磷灰石的冷烧结工艺与共沉淀法：比较研究
Engineering and Technology Journal Pub Date : 2024-01-01 DOI: 10.30684/etj.2023.143947.1617
Hawraa Abbas, Hanaa Smeig, Z. A. Abdul Ameer
{"title":"Cold sintering process of hydroxyapatite derived from natural bone and co-precipitation method: a comparative study","authors":"Hawraa Abbas, Hanaa Smeig, Z. A. Abdul Ameer","doi":"10.30684/etj.2023.143947.1617","DOIUrl":"https://doi.org/10.30684/etj.2023.143947.1617","url":null,"abstract":"This study uses a novel sintering technique at very low temperatures (below 300°C) named the Cold Sintering Process to produce highly dense Hydroxyapatite (HA) samples. Nano hydroxyapatite was prepared using two different methods: Synthesis by chemical precipitation method (HA 1 ) and natural source from Boven bone (HA 2 ). The samples are characterized using scanning electron microscope (SEM), X-ray energy dispersive spectrometry (EDS), X-ray diffractogram (XRD), transition electron microscope (TEM), Fourier transform infrared spectrometry (FTIR) and Nuclear magnetic resonance spectroscopy (NMR). Also, physical and mechanical properties measurements were detected, including density and hardness. The results indicated that cold sintering could result in Hydroxyapatite with high densification, high purity, and high stability without thermal decomposition compared with traditional sintering. The relative density and hardness for HA 1 are 99% and 502HV, respectively. The relative density and hardness for HA 2 are 69% and 350HV, respectively. It can be observed that the HA 1 sample has higher densification than HA 2 due to the presence of organic matter in natural Hydroxyapatite HA 2 . This organic material will be removed during the cold sintering process, leaving pores that lead to low densification of HA 2 samples. It can be concluded that the synthesis hydroxyapatite (HA 1 ) can be easily sintered by a cold sintering process compared with natural one(HA 2 ).","PeriodicalId":507832,"journal":{"name":"Engineering and Technology Journal","volume":"27 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139458119","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
VISCOSITY MONITORING AND ANALYSIS FOR ROTATING MACHINERIES 旋转机械的粘度监测和分析
Engineering and Technology Journal Pub Date : 2023-12-31 DOI: 10.47191/etj/v8i12.14
W. A. Akpan, I. Nyaudo
{"title":"VISCOSITY MONITORING AND ANALYSIS FOR ROTATING MACHINERIES","authors":"W. A. Akpan, I. Nyaudo","doi":"10.47191/etj/v8i12.14","DOIUrl":"https://doi.org/10.47191/etj/v8i12.14","url":null,"abstract":"Lubricants used in machines degrade with time. This may be caused by load, contamination and operating environment. Proper monitoring and analysis of the state of the lubricant is required to keep the machine in good condition and to minimize the cost of maintenance. This research is concerned with the application of lubrication standards to ensure proper operation of rotating equipment. The methods outlined include monitoring, analysis and comparison with lubricant performance standards. The method when rightly applied can signal wear, level of contamination and chemistry of the lubricant. Viscosity monitoring and analysis is useful to determine the state of the lubricant and hence the health of the machine, which is useful in taking maintenance decisions. With proper monitoring and analysis of the lubricant in rotating equipment, safety is ensured in addition to reduction of unforeseen failures and the cost of maintenance of the machines.","PeriodicalId":507832,"journal":{"name":"Engineering and Technology Journal","volume":"119 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139133303","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
DESIGN OF A HUMAN BODY TEMPERATURE MEASURING INSTRUMENT WITH A CONTACTLESS BASED SYSTEM INTERNET OF THINGS 设计基于非接触式物联网系统的人体体温测量仪
Engineering and Technology Journal Pub Date : 2023-12-31 DOI: 10.47191/etj/v8i12.12
Gatot Santoso, Beny Firman, S. Hani, Suwanto Raharjo, Emy Setyaningsih, Ragil Prasetyo
{"title":"DESIGN OF A HUMAN BODY TEMPERATURE MEASURING INSTRUMENT WITH A CONTACTLESS BASED SYSTEM INTERNET OF THINGS","authors":"Gatot Santoso, Beny Firman, S. Hani, Suwanto Raharjo, Emy Setyaningsih, Ragil Prasetyo","doi":"10.47191/etj/v8i12.12","DOIUrl":"https://doi.org/10.47191/etj/v8i12.12","url":null,"abstract":"Measuring body temperature is one way of physical assessment that is used to determine the state of human health or to test human responses. This factor is the most important to detect whether a person is experiencing symptoms of disease or not.A human body temperature measuring system with a contactless system will help health agencies in determining a visitor or patient in knowing whether they are healthy or sick. The results of this research show that the body temperature measuring device with a contactless system using the mlx90614 temperature sensor can work well in accordance with the design with a large accuracy of 98.44% with the ratio of conventional body temperature measuring devices.","PeriodicalId":507832,"journal":{"name":"Engineering and Technology Journal","volume":" 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139135937","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
SMART SAFE USING FACE DETECTION METHOD ESP32 CAM 使用人脸检测方法的智能保险箱 esp32 cam
Engineering and Technology Journal Pub Date : 2023-12-31 DOI: 10.47191/etj/v8i12.13
Samuel Kristiyana, Amir Hamzah, Hanika Pasang, Vian Aprilian Adhitama
{"title":"SMART SAFE USING FACE DETECTION METHOD ESP32 CAM","authors":"Samuel Kristiyana, Amir Hamzah, Hanika Pasang, Vian Aprilian Adhitama","doi":"10.47191/etj/v8i12.13","DOIUrl":"https://doi.org/10.47191/etj/v8i12.13","url":null,"abstract":"Currently crime cases are undeniable, one of the cases of crime or crime that often occurs in our lives is theft, the role of technology has an important role in the security system, one of which is the security system in the Safe. The author got the idea to design a \"Smart Safe With Face Detection Method Use ESP32 CAM\" which uses ESP32 CAM which functions to recognize or detect the face of the safe owner, the safe is also equipped with a keypad as an alternative to open the safe and alarm when forcibly disturbed by others. This smart safe technology is expected to help users in safeguarding assets and valuables stored in a safe, so there is no more worry over theft.","PeriodicalId":507832,"journal":{"name":"Engineering and Technology Journal","volume":"39 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139132315","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
TOXICITY TEST OF WASTE OIL BEFORE AND AFTER TREATMENT USING PHYTOREMEDIATION ON BIOINDICATORS 利用植物修复法处理废油前后对生物指标的毒性测试
Engineering and Technology Journal Pub Date : 2023-12-31 DOI: 10.47191/etj/v8i12.15
Ivan Agusta Prabawa Dwi Putra, Yuli Pratiwi, Muchlis
{"title":"TOXICITY TEST OF WASTE OIL BEFORE AND AFTER TREATMENT USING PHYTOREMEDIATION ON BIOINDICATORS","authors":"Ivan Agusta Prabawa Dwi Putra, Yuli Pratiwi, Muchlis","doi":"10.47191/etj/v8i12.15","DOIUrl":"https://doi.org/10.47191/etj/v8i12.15","url":null,"abstract":"Silugonggo River is a river that crosses Juwana District, Pati Regency, Central Java, which empties into the Java Sea. Industrial activities and workshops around the Silugonggo River cause river water to become polluted with used oil.. Even though many people around the river use the Silugonggo River for daily activities, one example is as a place to find fish for side dishes and traded.. The purpose of this study was to determine the concentration of lead in river water contaminated with used oil waste and the LC50 value of 0-96 hours against bioindicators, namely tilapia (Oreochromis niloticus), before and after being processed using phytoremediation. This research phase includes: 1) toxicity tests before treatment consisting of: preliminary tests with waste concentrations of 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100%, and actual tests with waste concentrations of 15, 16, 17, 18, 19, 20, 21, 22, 23, and 24%; 2) The process of treating waste oil with phytoemidiation using water hyacinth and kale plants is tested for plant weight variations. Plant weight variations are 200 grams, 300 grams, 400 grams, and 500 grams, and the process of processing waste oil is carried out continuously; 3) Post-treatment toxicity test consisting of: preliminary test with waste concentrations of 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100%, and actual tests with waste concentrations of 42, 43, 44, 45, 46, 47, 48, 49, 50, and 51%. The results showed that the effective weight in reducing lead in water hyacinth plants and kale plants was 500 grams with lead weight being <0.0058 mg / L (under Quality Standards according to the Decree of the Government Regulation of the Republic of Indonesia Number 82 of 2001 concerning Water Quality Management and Water Pollution Control). The LC50 value of 96 hours of waste oil before processing is 19.66%. The LC50 value 96 hours after processing is 46.69%.","PeriodicalId":507832,"journal":{"name":"Engineering and Technology Journal","volume":"118 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139135355","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
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