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International Journal of Innovation in Mechanical Engineering and Advanced Materials最新文献

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CFD SIMULATION OF PRESSURIZATION SYSTEM IN FIRE STAIRS WTC 6 BUILDING wtc6建筑消防楼梯加压系统的CFD模拟
International Journal of Innovation in Mechanical Engineering and Advanced Materials Pub Date : 2021-09-06 DOI: 10.22441/IJIMEAM.V3I2.11776
Salah Arif, R. Sundari, Rini Anggraini
{"title":"CFD SIMULATION OF PRESSURIZATION SYSTEM IN FIRE STAIRS WTC 6 BUILDING","authors":"Salah Arif, R. Sundari, Rini Anggraini","doi":"10.22441/IJIMEAM.V3I2.11776","DOIUrl":"https://doi.org/10.22441/IJIMEAM.V3I2.11776","url":null,"abstract":"Pressurization system in fire stairs is required for high-rise building for safety evacuation in fire attack. This paper has highlighted on the problem of WTC 6 high-rise building with 18 floors related to safety evacuation in fire attack. In real situation, the minimum air pressure (12.5 Pa) at closed condition and minimum air velocity (1 m/s) at open door chamber in fire stairs as stated in the SNI 03-6571-2001 requirements are not fulfilled by the WTC 6 high-rise building. Therefore, a CFD (Computational Fluid Dynamics) simulation has been used to overcome the problems. The CFD results show that volumetric air flow rate of 7.24 m3/s injected to fire stairs in multiple injection system yielded pressure difference of 39.5–44.7 Pa and air velocity of 1.1–1.2 m/s. The CFD simulation implemented in real situation yields air pressure difference of 38.2 Pa in closed condition and air velocity in open door chamber of 1.16 m/s assumed to solve the problem.","PeriodicalId":31435,"journal":{"name":"International Journal of Innovation in Mechanical Engineering and Advanced Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44903881","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
STUDY ON PARAMETERS IN COUNTER CURRENT DOUBLE PIPE HEAT EXCHANGER APPLYING CIRCULAR TURBULATOR 应用圆形紊流器的逆流双管换热器参数研究
International Journal of Innovation in Mechanical Engineering and Advanced Materials Pub Date : 2021-09-06 DOI: 10.22441/IJIMEAM.V3I2.11876
S. Sudiono, R. Sundari, Rini Anggraini
{"title":"STUDY ON PARAMETERS IN COUNTER CURRENT DOUBLE PIPE HEAT EXCHANGER APPLYING CIRCULAR TURBULATOR","authors":"S. Sudiono, R. Sundari, Rini Anggraini","doi":"10.22441/IJIMEAM.V3I2.11876","DOIUrl":"https://doi.org/10.22441/IJIMEAM.V3I2.11876","url":null,"abstract":"Many industries dealing with manufacturing and HVAC (heating, ventilation, and air cooling) are rely heavily on thermodynamics principles with respect to heat and mass transfer. The objective of this study is to do optimization to yield optimum heat transfer rate and minimized pressure drop with regard to number of circular turbulator (CT) and water debit on Nusselt number (Nu) in counter current double pipe heat exchanger. This work has applied the classical rule of thermal science dealing with Nusselt number in relation to convection and conduction of heat transfer rate due to temperature effect. The result shows the highest Nu found to be 835.3 at 5 CT and water debit of 9 L/min. The addition of CT number gives effect on fluid current due to vortex generation. This study also investigates the effect of CT number on friction coefficient that the friction coefficient of a heat exchanger in the absence of CT is lower than that in the presence of CT. For any CT number, the friction coefficient is reduced with increasing water debit. The study has also found that the thermal performance ratio has achieved higher values for heat exchanger in the absence of CT.","PeriodicalId":31435,"journal":{"name":"International Journal of Innovation in Mechanical Engineering and Advanced Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43739877","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
Provide a multi-purpose fuzzy model for stock portfolio optimization 为股票投资组合优化提供了一个多用途模糊模型
International Journal of Innovation in Mechanical Engineering and Advanced Materials Pub Date : 2021-07-06 DOI: 10.52547/ijie.1.2.24
Hadi Khajezadeh Dezfouli, Mehdi Khajezadeh Dezfoli
{"title":"Provide a multi-purpose fuzzy model for stock portfolio optimization","authors":"Hadi Khajezadeh Dezfouli, Mehdi Khajezadeh Dezfoli","doi":"10.52547/ijie.1.2.24","DOIUrl":"https://doi.org/10.52547/ijie.1.2.24","url":null,"abstract":"Researchers in the field of portfolio optimization made efforts to decrease uncertainty in future returns. Any disturbance in the parameter values causes the solution to be non-optimal or impossible. This study designs a strong fuzzy-multipurpose model for stock portfolio optimization based on Tehran Stock Exchange market data. At the end of the paper, the created model is compared with the results of the multi-objective model. The results show that the fuzzy multi-objective optimization model has relative stability and model compared to the multi-purpose optimization model is strong.","PeriodicalId":31435,"journal":{"name":"International Journal of Innovation in Mechanical Engineering and Advanced Materials","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81772923","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
Providing a model for the issue of multi-period ambulance location 为多时段救护车定位问题提供了一个模型
International Journal of Innovation in Mechanical Engineering and Advanced Materials Pub Date : 2021-07-06 DOI: 10.52547/ijie.1.2.13
H. Kazemipoor, M. E. Sadeghi, Agnieszka Szmelter-Jarosz, Mohadese Aghabozorgi
{"title":"Providing a model for the issue of multi-period ambulance location","authors":"H. Kazemipoor, M. E. Sadeghi, Agnieszka Szmelter-Jarosz, Mohadese Aghabozorgi","doi":"10.52547/ijie.1.2.13","DOIUrl":"https://doi.org/10.52547/ijie.1.2.13","url":null,"abstract":"In this study, two mathematical models have been developed for assigning emergency vehicles, namely ambulances, to geographical areas. The first model, which is based on the assignment problem, the ambulance transfer (moving ambulances) between locations has not been considered. As ambulance transfer can improve system efficiency by decreasing the response time as well as operational cost, we consider this in the second model, which is based on the transportation problem. Both models assume that the demand of all geographical locations must be met. The major contributions of this study are: ambulance transfer between locations, day split into several time slots, and demand distribution of the geographical zone. To the best of our knowledge the first two have not been studied before. These extensions allow us to have a more realistic model of the real-world operation. Although, in previous studies, maximizing coverage has been the main objective of the goal, here, minimizing operating costs is a function of the main objective, because we have assumed that the demand of all geographical areas must be met.","PeriodicalId":31435,"journal":{"name":"International Journal of Innovation in Mechanical Engineering and Advanced Materials","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90599397","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
Presenting a new SJB model in order to formulate and select strategic goals in the strategic management process 为战略管理过程中战略目标的制定和选择，提出了一种新的SJB模型
International Journal of Innovation in Mechanical Engineering and Advanced Materials Pub Date : 2021-07-06 DOI: 10.52547/ijie.1.2.84
Hossein Jafari, Ali Mazloumzadeh
{"title":"Presenting a new SJB model in order to formulate and select strategic goals in the strategic management process","authors":"Hossein Jafari, Ali Mazloumzadeh","doi":"10.52547/ijie.1.2.84","DOIUrl":"https://doi.org/10.52547/ijie.1.2.84","url":null,"abstract":"Today, the development of appropriate strategies as one of the basic tools of companies to compete in the markets of the e-commerce era. The strategy formulation process is inelastic with common strategic management models such as balanced scorecard and SWOT model in the face of market changes and competitive behaviour of competitors. It becomes. In this article, after reviewing the general structure of strategy formulation using the balanced scorecard model, the mentioned shortcomings in the strategy formulation process are examined. In the field of purposeful design, competitive strategies are presented and finally, the use of Judo Strategy model, SWOT matrix and Balanced Scorecard model of SJB framework is presented as an agile and systematic model in the process of designing and formulating strategy. In order to evaluate the applicability of this model, the beta company has been selected and with the cooperation of the top managers of that company, the proposed model has been implemented in the process of designing and formulating its strategy.","PeriodicalId":31435,"journal":{"name":"International Journal of Innovation in Mechanical Engineering and Advanced Materials","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75612251","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
Provide a model for managing claims regarding the PMBOK standard 提供一个管理项目管理知识体系标准索赔的模型
International Journal of Innovation in Mechanical Engineering and Advanced Materials Pub Date : 2021-07-06 DOI: 10.52547/ijie.1.2.63
Farshad Shirazi
{"title":"Provide a model for managing claims regarding the PMBOK standard","authors":"Farshad Shirazi","doi":"10.52547/ijie.1.2.63","DOIUrl":"https://doi.org/10.52547/ijie.1.2.63","url":null,"abstract":"Iran is very rich in oil and gas, which is why the Iran government is investing billions of dollars every year in oil and gas facilities to improve the country. The oil and gas refinery construction industry are very complex and involves multidisciplinary contributors. In this environment, many changes and claims appear. Changes and claims are commonly considered negative events, and thus, should be kept away from the project. With considering this concept, this paper presents the results of a study of the types and causes of project claims in the Persian Gulf Star Gas Condensate Refinery project in Bandar Abbas. The data were analyzed and the consequences of this analysis along with advice on how to reduce/prevent claims in construction are then presented.","PeriodicalId":31435,"journal":{"name":"International Journal of Innovation in Mechanical Engineering and Advanced Materials","volume":"114 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78085950","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
Robust Box Approach for Blood Supply Chain Network Design under Uncertainty: Hybrid Moth-Flame Optimization and Genetic Algorithm 不确定条件下血液供应链网络设计的鲁棒盒法:蛾焰混合优化与遗传算法
International Journal of Innovation in Mechanical Engineering and Advanced Materials Pub Date : 2021-07-06 DOI: 10.52547/ijie.1.2.40
Javid Ghahremani-Nahr, H. Nozari, Mehrnaz Bathaee
{"title":"Robust Box Approach for Blood Supply Chain Network Design under Uncertainty: Hybrid Moth-Flame Optimization and Genetic Algorithm","authors":"Javid Ghahremani-Nahr, H. Nozari, Mehrnaz Bathaee","doi":"10.52547/ijie.1.2.40","DOIUrl":"https://doi.org/10.52547/ijie.1.2.40","url":null,"abstract":"In this paper, a blood supply chain network (BSCN) is designed to reduce the total cost of the supply chain network under demand and transportation costs. The network levels considered for modeling include blood donation clusters, permanent and temporary blood transfusion centers, major laboratory centers and blood supply points. Other goals included determining the optimal number and location of potential facilities, optimal allocation of the flow of goods between the selected facilities and determining the most suitable transport route to distribute the goods to customer areas in uncertainty conditions. This study addresses the issue of blood prishability from blood sampling to distribution to customer demand areas. Given that the model was NP-hard, the MFGO algorithm were used to solve the model with a priority-based solution. The results of the design of the experiments showed the high efficiency of the MFGO algorithm in comparison with the PSO algorithm in finding efficient solutions. Also, the mean of the objective function in robust approach is more than the one in the deterministic approach, while the standard deviation of the first objective function in the robust approach is less than the one in the deterministic approach at all levels of the uncertainty factor.","PeriodicalId":31435,"journal":{"name":"International Journal of Innovation in Mechanical Engineering and Advanced Materials","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83417367","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: 19
A fuzzy solution approach with genetic algorithm for a new fuzzy queue multi-objective locating model with the possibility of creating congestion for health centers 基于遗传算法的模糊求解方法，研究了一种新的可能产生拥塞的医疗中心模糊队列多目标定位模型
International Journal of Innovation in Mechanical Engineering and Advanced Materials Pub Date : 2021-07-06 DOI: 10.52547/ijie.1.2.1
Parisa Eslami, Amir Ali Mirbaha
{"title":"A fuzzy solution approach with genetic algorithm for a new fuzzy queue multi-objective locating model with the possibility of creating congestion for health centers","authors":"Parisa Eslami, Amir Ali Mirbaha","doi":"10.52547/ijie.1.2.1","DOIUrl":"https://doi.org/10.52547/ijie.1.2.1","url":null,"abstract":"Health authorities have always faced the challenge of organizing health-related processes. One of the most important processes is locating health centers, clinics, hospitals, etc. Is. With increasing demand, efforts have been made to increase the efficiency of existing systems and the use of new efficient systems (their type of facilities and location) by health managers. Therefore, the use of new and efficient scientific methods in the direction of health planning has always been of interest to managers and researchers in this field. Considering the huge costs of establishing health centers and their importance, this important issue has been taken into consideration. Accordingly, in this paper, we have presented a multi-objective locating model with maximum coverage. In this model, the distance of centers from demand points, demand rates, and service rates are expressed as triangular fuzzy numbers and also queue theory has been used to improve the quality of the system.","PeriodicalId":31435,"journal":{"name":"International Journal of Innovation in Mechanical Engineering and Advanced Materials","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79248737","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
Security Analysis and Improvement of Wei-Chi Ku and Yi-Han Chen’s RFID protocol 顾伟智、陈奕涵RFID协议的安全性分析与改进
International Journal of Innovation in Mechanical Engineering and Advanced Materials Pub Date : 2021-07-06 DOI: 10.52547/ijie.1.2.73
M. Mehrabani, Soosan Sadegha
{"title":"Security Analysis and Improvement of Wei-Chi Ku and Yi-Han Chen’s RFID protocol","authors":"M. Mehrabani, Soosan Sadegha","doi":"10.52547/ijie.1.2.73","DOIUrl":"https://doi.org/10.52547/ijie.1.2.73","url":null,"abstract":"RFID are small wireless devices that can be used for identification of objects and humans. With development of RFID technology and increasing the use of this technology in everyday life, the Security issues in these systems have been growing in terms of importance day by day. In 2012 Wei-Chi Ku and Yi-Han Chen Proposed a new efficient mutual authentication protocol for passive RFID that provides confidentiality, un-traceability and efficiency. This paper demonstrates that Wei-Chi Ku and Yi-Han Chen’s protocol has a serious security problem and proposes a new protocol to prevent this security problem by some changes. Furthermore, the capability of our method for improving, confidentiality, untraceability, and data integrity is discussed.","PeriodicalId":31435,"journal":{"name":"International Journal of Innovation in Mechanical Engineering and Advanced Materials","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88599326","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
EFFECT OF WELDING HEAT INPUT ON THE CORROSION RATE OF CARBON STEEL MMA WELDING 焊接热输入对碳钢mma焊接腐蚀速率的影响
International Journal of Innovation in Mechanical Engineering and Advanced Materials Pub Date : 2021-06-04 DOI: 10.22441/IJIMEAM.V3I1.11667
M. Sitorus
{"title":"EFFECT OF WELDING HEAT INPUT ON THE CORROSION RATE OF CARBON STEEL MMA WELDING","authors":"M. Sitorus","doi":"10.22441/IJIMEAM.V3I1.11667","DOIUrl":"https://doi.org/10.22441/IJIMEAM.V3I1.11667","url":null,"abstract":"AbstractSteel is one of materials which often used on steel construction, bridge construction, and high rise building construction. Construction using welding joint is expected able to withstand construction loads for a long time. After a while  weldment will be exposed to corrosion that will be construction failure in turn. One of the most important parameter in welding is heat input, however it hasn’t obtain correlation between heat input and corrosion rate on MMA (Manual Metal Arch) weldment  on mild steel. This paper aims to obtain correlation between heat input and corrosion rate of low carbon steel  with MMA welding. The result was show that  corrosion rate tend to decrease with adding of duration, where higher corrosion rate at heat input 0,8108 kJ/mm was 68,68 gm/m2 hr at duration  5 hour.","PeriodicalId":31435,"journal":{"name":"International Journal of Innovation in Mechanical Engineering and Advanced Materials","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44542871","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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