Development of Austenite Fe Alloy for Melted Zinc Coating Facilities Using the DV-Xα Methods
Min-Sook Baek, Kyeong-Cheol Baek, Yoon-Ja Kim, Dong-Joo Yoon
Sch J Eng Tech | 1-7
DOI : 10.36347/sjet.2021.v09i01.001
In this study, the material used in the hot dip galvanizing equipment was poorly corrosion-resistant, so it was performed to solve the cost and time problems caused by equipment replacement. The theoretical calculation was performed using the DV-Xα method (Discrete Variational Local-density approximation method). The alloy (STS316L) of the equipment currently used has a austenite phase. Therefore, the theoretical calculation was performed by applying Fm-3m, which is a cubic structure. The new alloy was chosen by designing theoretical values close to existing materials. Considering elements that contribute to corrosion, most have high prices. Therefore, the design was completed by adjusting the content using only the components of the reference material in the theoretical design. The final design alloys were chosen as SWA6. Designed SWA6 were dissolved and prepared using an induction furnace. After the heat treatment process was completed, the corrosion rate of the alloys was confirmed by using the potentiodynamic polarization test. The surface of the prepared alloys were processed horizontally and then polished to # 1200 using sand paper to perform potentiodynamic polarization test. 316L: 0.9599 mpy (mils / year), SWA6: 0.828 mpy, alloys designed than 316L had a lower corrosion rate. Therefore, the designed alloy was expected to have better erosion resistance.
Original Research Article
Dec. 24, 2020
Quality and Safety Conformance of High Rise Hospital Building Construction Practices
Er. Ram Bharati, Er. Lalit Koju
Sch J Eng Tech | 204-214
DOI : 10.36347/sjet.2020.v08i12.002
Good performance of any construction project refers to continuous improvement of the project activities to achieve the project objectives. This research has been designed to study the construction performances of Hospital for Advanced Medicine and Surgery (HAMS) building construction project based on quality control and safety. The quality of construction was studied by comparing the quality control test results with the standard values. The construction safety provision of HAMS project was studied through a questionnaire survey. The responses from a questionnaire survey and review of records from concerned representative were examined to identify the factor affecting the performance of building construction. The factor affecting the performance was identified and presented in various ways for the interpretation. Materials were found to be of good quality when compared with the standards, even though only 41.9% of cube moulds were of required strength as per the compressive strength results. It was due to lack of curing and poor workmanship. All the 45 labors were selected for the questionnaires for construction safety provision of the construction site. All the labors have faced minor accidents which required only first aid. Helmets, gloves, boots, safety belts and safety glasses were provided as personal protective equipment which was proper and suitable. There were no documents for the safety at site. The hygiene condition of site was good but no labors were aware about safety precautions and safety procedures at site. Nondestructive and rebar locator test for the structure were not performed though 58.1% of cube moulds were failed in their compressive strength test, so nondestructive test must be performed with expert consultation and required steps must be forwarded before operation of hospital. Effective and efficient training courses for engineers in quality, safety, productivity, information systems and management of human resources must be conducted........
Original Research Article
Dec. 10, 2020
Assessment of Literature on Webometrics Published in the Scopus-Elsevier Database from 2003 - 2019
Tahira Yasmin, Saleh Ali Al-Qarni, Zameer Hussain Baladi
Sch J Eng Tech | 199-203
DOI : 10.36347/sjet.2020.v08i12.001
To evaluate, year-wise, document types, subject-wise classification, authorship pattern, language pattern, and collaboration of countries in research productivity of webometrics published in journals indexed in the Scopus database from 2003 – 2019. The study data retrieved from the Scopus-Elsevier database on file format with comma-separated value (CSV) and note paid techniques as plaintext for measuring the statistical positions to fulfill the study's aim. MS Office Excel Sheet 2010 used for tabulations. The mainstream of documents existing on article shape, followed by conference papers, review articles, editorial, and book chapters. Computer science with 55, 73% take leading space to follow by three other subjects. A majority 61; 81.3% articles written collaboratively, and the remaining 14; 18.6% research papers produced by a single or solo author. The journal Scientometrics got the attention of researchers and published eight articles out of 75 articles. Webometrics attract authors affiliated with 101 countries to mark their sketch in collaborative manners in seven languages, but the English language with 64, 85.3% on the top slot. This study of webometrics indicate a new field of exploration to determine the value of hindrances for more analysis, improvement, and outcomes in the provision of ideas, layout plans, and their execution, and achievement to rise higher in the time of delivering of services or products.