International Journal of Engineering最新文献_第7页

Numerical Evaluation of Two-dimensional Multi-layer Cover System to Regulate Acid Mine Drainage of Tailing Dams 二维多层覆盖系统调节尾矿库酸性矿井排水的数值评价

IF 1.3

International Journal of Engineering Pub Date : 2023-01-01 DOI: 10.5829/ije.2023.36.10a.10

M. Jafarzadeh Marandi, V. Ghiasi, K. Badv

引用次数: 1

A New Approach for Seismic Damage Detection Based on Results of Pushover Analysis and Modal Based Damage Index 基于推覆分析结果和基于模态损伤指数的地震损伤检测新方法

IF 1.3

International Journal of Engineering Pub Date : 2023-01-01 DOI: 10.5829/ije.2023.36.10a.14

M. Mazloom, N. Fallah

{"title":"A New Approach for Seismic Damage Detection Based on Results of Pushover Analysis and Modal Based Damage Index","authors":"M. Mazloom, N. Fallah","doi":"10.5829/ije.2023.36.10a.14","DOIUrl":"https://doi.org/10.5829/ije.2023.36.10a.14","url":null,"abstract":"The diagnosis of the location of structural damage and its extent after an earthquake using numerical methods is one of the ongoing research topics. After the occurrence of damage in a structure and a reduction in its stiffness, the dynamic characteristics of the structure change, and therefore, assessing the changes in its dynamic characteristics can be used as an indicator for detecting damage. In this article, an advanced technique called Direct Stiffness Calculation (DSC) and a new damage index based on flexural stiffness variations (SVI) are utilized for damage detection in structures. Initially, the proposed technique is examined on a steel beam with known specifications. Then, a reinforced concrete moment frame is modeled, and after extracting its dynamic characteristics, it is subjected to a pushover analysis to create a damage scenario without direct intervention. Based on the analysis results, the plastic hinge formation location at both ends of the beam is selected as the probable location of damage in the floor. By using the modal information of the damaged structure and calculating the SVI in the beams of the floors, it is determined that this index can accurately and significantly distinguish the location of damage only by knowing the first mode of the structure and with sufficient magnification compared to other points. Furthermore, the results demonstrate that with this method, it is possible to accurately determine the location of damage even without knowing the dynamic characteristics of the intact structure and solely with the information of the damaged structure.","PeriodicalId":14109,"journal":{"name":"International Journal of Engineering","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70899742","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

Mode Shape Change Based System Identification: An Improvement using Distribute Computing and Roving Technique 基于模态振型变化的系统识别:采用分布式计算和粗纱技术的改进

IF 1.3

International Journal of Engineering Pub Date : 2023-01-01 DOI: 10.5829/ije.2023.36.09c.10

B. Patel, U. Dewangan

{"title":"Mode Shape Change Based System Identification: An Improvement using Distribute Computing and Roving Technique","authors":"B. Patel, U. Dewangan","doi":"10.5829/ije.2023.36.09c.10","DOIUrl":"https://doi.org/10.5829/ije.2023.36.09c.10","url":null,"abstract":"Structure health monitoring is still a challenging issue despite continuous research efforts since a long time. Modeshape changes are a remarkable symptom of the damaged element location in structural system identification. In this paper, various mode shape based prediction techniques are applied to a common structural model. A cantilever beam model is formulated using the distributed mass and stiffness matrix based finite element modelling. Multiple damages are introduced in the above cantilever beam even with two, three and four member damage combinations. The results does not provide a concrete solution on the damage element location prediction. Further, in the computational part, the distributed computing technique using element-to-element matrix multiplications is applied. The Roving technique is also applied, which acts as a counter for self-automation. The proposed approach provides a better damage element location prediction even for the multiple damaged member combinations. The roving technique means an element scanning technique, which works with a computer clock speed. The novelty of the approach is that the method is simple and it could be applied to other structures. While scanning as automation no element is left out. Another beauty of the method is that no prior damage elements are assumed as many statistical based approaches assumed in prior. This approach could be a better way to the automation process, for the system identification and machine learning tools. doi","PeriodicalId":14109,"journal":{"name":"International Journal of Engineering","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70899813","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

Chemical Reaction-Diffusion Model Around a Vessel for Studying Temperature and Concentration of Three Chemical Species by Finite Element Method 用有限元法研究三种化学物质温度和浓度的容器周围化学反应-扩散模型

IF 1.3

International Journal of Engineering Pub Date : 2023-01-01 DOI: 10.5829/ije.2023.36.01a.19

P. Pasha, F. Taghinia, F. Nadalinia Chari, B. Jalili, P. Jalili, D. Domiri Ganji

引用次数: 2

Analytical Modeling of Heat Transfer Coefficient Analysis in Dimensionless Number of an Electric Parking Brake Using CFD 基于CFD的电动驻车制动器无量纲数传热系数分析模型

IF 1.3

International Journal of Engineering Pub Date : 2023-01-01 DOI: 10.5829/ije.2023.36.02b.08

V. Agrawal, H. Khairnar

引用次数: 0

Development of a New Backward Directional Coupler Based on Perforated Substrates 基于多孔基板的新型反向耦合器的研制

IF 1.3

International Journal of Engineering Pub Date : 2023-01-01 DOI: 10.5829/ije.2023.36.02b.11

H. Karimian-Sarakhs, M. H. Neshati

引用次数: 0

Earth-to-air Heat Exchanger for Cooling Applications in a Hot and Dry Climate: Numerical and Experimental Study 热和干燥气候中用于冷却的地对空热交换器:数值和实验研究

IF 1.3

International Journal of Engineering Pub Date : 2023-01-01 DOI: 10.5829/ije.2023.36.01a.10

A. Albarghooth, A. Ramiar, R. Ramyar

引用次数: 0

Ultra Low Power Temperature Compensated Complementary Metal Oxide Semiconductor Ring Oscillator in Subthreshold 亚阈值超低功耗温度补偿互补金属氧化物半导体环形振荡器

IF 1.3

International Journal of Engineering Pub Date : 2023-01-01 DOI: 10.5829/ije.2023.36.01a.13

E. Sadeghi, E. Ebrahimi

引用次数: 0

Discrimination of Plastic Waste using Laser-induced Breakdown Spectroscopy-principal Component Analysis: Highlighting Molecular LIBS 利用激光诱导击穿光谱-主成分分析鉴别塑料垃圾:突出分子LIBS

IF 1.3

International Journal of Engineering Pub Date : 2023-01-01 DOI: 10.5829/ije.2023.36.01a.12

S. N. Abdulmadjid, B. S. Hartadi, R. Mitaphonna, M. Iqhrammullah

引用次数: 0

A Light Solution for Device Diversity Problem in a Wireless Local Area Network Fingerprint Indoor Positioning System 无线局域网指纹室内定位系统中设备分集问题的一种轻量级解决方案

IF 1.3

International Journal of Engineering Pub Date : 2023-01-01 DOI: 10.5829/ije.2023.36.04a.05

F. Firdaus, I. Fadhillah, N. A. Ahmad, A. A. Mohd Alic

引用次数: 0