Procedia Engineering最新文献_第2页

The Barriers to Research and Innovation in Disaster Resilience in Higher Education Institutions in Asia 亚洲高等教育机构抗灾能力研究与创新的障碍

Procedia Engineering Pub Date : 2018-02-22 DOI: 10.1016/J.PROENG.2018.01.158

C. Liyanage, Renuka Thakore, Dilanthi Amartunga, A. Mustapha, R. Haigh

引用次数: 4

Numerical and experimental approach for improving quasi-static and fatigue testing of a unidirectional CFRP composite laminate 改进单向CFRP复合材料层合板准静态和疲劳测试的数值和实验方法

Procedia Engineering Pub Date : 2018-01-01 Epub Date: 2018-03-06 DOI: 10.1016/j.proeng.2018.02.076

Fabrizio Pagano , Pascal Paulmier , Myriam Kaminski , Alain Thionnet

引用次数: 9

Use of Cone Calorimeter for Estimating Fire Behavior of PVC Membranes 用锥形量热计估算PVC膜的燃烧性能

Procedia Engineering Pub Date : 2018-01-01 Epub Date: 2018-02-07 DOI: 10.1016/j.proeng.2017.12.079

Yu Xia , Guo-qing Zhu , Yun-ji Gao , Feng Guo

引用次数: 2

Resilient Health Infrastructure: strengthening hospitals’ capacity to respond effectively during disasters and crises 韧性卫生基础设施:加强医院在灾害和危机期间有效应对的能力

Procedia Engineering Pub Date : 2018-01-01 Epub Date: 2018-02-22 DOI: 10.1016/j.proeng.2018.01.034

Ab. Samah Norazam

{"title":"Resilient Health Infrastructure: strengthening hospitals’ capacity to respond effectively during disasters and crises","authors":"Ab. Samah Norazam","doi":"10.1016/j.proeng.2018.01.034","DOIUrl":"10.1016/j.proeng.2018.01.034","url":null,"abstract":"<div><p>Resilient Health Infrastructure (RHI) is part of MERCY Malaysia’s Building Resilient Communities (BRC) initiative. It is a program focusing on advocating a planned preparation in strengthening hospitals’ in order to respond effectively during disasters as well as fast recovery from the impact of extreme events. Hospital management and its built environment representing building and infrastructure systems within a defined boundary should perform in a predictable manner during and after a hazard event and/or disaster. The failure of hospitals to absorb and accommodate pressures during disasters will cause performance degradation of services and health care of the hospital. This paper will discuss strategic approaches taken to increase the level of resiliency for health infrastructure, with focus on the criteria of robustness, redundancy and rapidity. The study of this paper will share the RHI/BRC initiatives in the investigation of health infrastructure’s (i) robustness through building codes and structure, architecture, planning and zoning; (ii) redundancy through planning and operations; and (iii) rapidity through communication, movement and risk assessment. The case studies conducted in partnership with the Kelantan State Health Department in Malaysia. This study will form a clear understanding of hospital resilience, and help in the understanding of drafting preliminary conceptual framework for a more resilient health infrastructure.</p></div>","PeriodicalId":20470,"journal":{"name":"Procedia Engineering","volume":"212 ","pages":"Pages 262-269"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proeng.2018.01.034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86834205","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Analysis for Fire Plume Temperature in Developing Area and Radiation Heat Flux Distribution in Small-scale Pool Fire 开发地区火羽温度及小规模池火辐射热流密度分布分析

Procedia Engineering Pub Date : 2018-01-01 Epub Date: 2018-02-07 DOI: 10.1016/j.proeng.2017.12.054

Gan-su Shen , Jun-cheng Jiang , Kui-bin Zhou , Shao-jie Zhang , Fan Wu , Meng-ya Zou

引用次数: 6

Effect of Platform Screen Doors on Mechanical Smoke Exhaust in Subway Station Fire 地铁车站火灾中站台屏蔽门对机械排烟的影响

Procedia Engineering Pub Date : 2018-01-01 Epub Date: 2018-02-07 DOI: 10.1016/j.proeng.2017.12.021

Da-yan Li, Guo-qing Zhu

引用次数: 15

An Experimental Investigation on the Effect of Wind Speed on Cotton Combustion 风速对棉花燃烧影响的实验研究

Procedia Engineering Pub Date : 2018-01-01 Epub Date: 2018-02-07 DOI: 10.1016/j.proeng.2017.12.076

Zhi-sheng Wang , Wan-fu Liu , Zhao-peng Ni , Lu Wang , Bo Gao

引用次数: 4

Fire Extinguishing Efficiency of Magnesium Hydroxide Powders under Different Particle Size 不同粒径氢氧化镁粉末的灭火效果

Procedia Engineering Pub Date : 2018-01-01 Epub Date: 2018-02-07 DOI: 10.1016/j.proeng.2017.12.035

Hai-qiang Liu , Ruo-wen Zong , Siuming Lo , Yuan Hu , You-ran Zhi

{"title":"Fire Extinguishing Efficiency of Magnesium Hydroxide Powders under Different Particle Size","authors":"Hai-qiang Liu , Ruo-wen Zong , Siuming Lo , Yuan Hu , You-ran Zhi","doi":"10.1016/j.proeng.2017.12.035","DOIUrl":"10.1016/j.proeng.2017.12.035","url":null,"abstract":"<div><p>After Montreal protocol, more and more new materials have been applied as the substitutes of Halon. Much attention has been paid to fire extinguishing efficiency of alkali metal salts and ammonium phosphate salts, but the effects of particle sizes have not been studied sufficiently. The fire-extinguishing efficiency of a new kind of agent based on magnesium hydroxide of different particle size was studied in this paper. Four different size powders have been used to study their fire-suppression efficiency through laboratory scale experiments in a confine space of 1*1*1m. The physical and chemical characteristics of the magnesium hydroxide powders were characterized by scanning electron microscopy (SEM) and thermal gravity analysis (TGA). The results have exhibited that these four kinds of powders are all high efficient for the fire suppression efficiency and there is a threshold value of 5μm for the fire suppression efficiency of magnesium hydroxide. The efficiency can be affected by the morphology of powders and particle size. The powders of larger specific surface area and smaller particle size are more efficient to suppress fire. Fire extinguishing and possible fire-suppression mechanisms have also been analyzed from three aspects: chemical inhibition, cooling effect and asphyxiation effect.</p></div>","PeriodicalId":20470,"journal":{"name":"Procedia Engineering","volume":"211 ","pages":"Pages 447-455"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proeng.2017.12.035","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79914579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Modeling and simulation of weld residual stresses and ultrasonic impact treatment of welded joints 焊缝残余应力建模与仿真及焊接接头超声冲击处理

Procedia Engineering Pub Date : 2018-01-01 Epub Date: 2018-03-06 DOI: 10.1016/j.proeng.2018.02.005

Jing Zheng , Ayhan Ince , Lanqing Tang

{"title":"Modeling and simulation of weld residual stresses and ultrasonic impact treatment of welded joints","authors":"Jing Zheng , Ayhan Ince , Lanqing Tang","doi":"10.1016/j.proeng.2018.02.005","DOIUrl":"10.1016/j.proeng.2018.02.005","url":null,"abstract":"<div><p>Most structures are fabricated using welded joints because of its low cost, structural strength and geometric flexibility. Welding is considered a highly complex metallurgical process that results in irregular geometries, material imperfections/flaws and tensile residual stresses. High tensile residual stresses and stress concentrations resulting from the weld process have a significant impact on fatigue life of structures, and thus a topic of great concern in product design. Ultrasonic impact treatment (UIT) is regarded as one of the most effective post welding treatment techniques to enhance the fatigue performance of welded structures. The UIT aims to introduce fatigue-beneficial compressive stresses by plastically deforming the weld toe and reduce stress concentrations by modifying local weld geometries. In this study, 3D modeling and simulation using finite element (FE) method has been performed to simulate welding process and numerical modeling of the UIT process to predict weld residual stress distribution of butt and T weld joints. The predicted numerical results under as-welded and UIT treatment conditions were compared to present weld residual stress improvements. Compared results shows that the UIT has potential applications on the fatigue design of welded structures, can lead to lighter structures and products, in which structures can be down-sized and optimized to reduce weights.</p></div>","PeriodicalId":20470,"journal":{"name":"Procedia Engineering","volume":"213 ","pages":"Pages 36-47"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proeng.2018.02.005","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77944324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 35

Predicting failure in additively manufactured parts using X-ray computed tomography and simulation 使用x射线计算机断层扫描和模拟预测增材制造零件的失效

Procedia Engineering Pub Date : 2018-01-01 Epub Date: 2018-03-06 DOI: 10.1016/j.proeng.2018.02.008

Johannes Fieres , Philipp Schumann , Christof Reinhart

{"title":"Predicting failure in additively manufactured parts using X-ray computed tomography and simulation","authors":"Johannes Fieres , Philipp Schumann , Christof Reinhart","doi":"10.1016/j.proeng.2018.02.008","DOIUrl":"10.1016/j.proeng.2018.02.008","url":null,"abstract":"<div><p>In casting, molding, or additive manufacturing processes, there are some typical issues that can change the geometry of a part and cause porosity or other defects. With the aid of X-ray computed tomography (CT), internal discontinuities and geometry deviations can be accurately detected and visualized. However, the question remains in how far a given defect affects mechanical failure. We aim at bridging this gap by structural mechanics simulations based on CT images. In this study, we describe a method to predict the tensile strength and the location of crack initiation from the simulated stress distributions on the basis of local stress concentrations. We validate the method for tensile rods and real-life aeronautic parts which were additively manufactured from an AlSi10Mg aluminum alloy. Thirty-six specimens were manufactured in total, where different porosity patterns were deliberately inserted. The specimens were CT-scanned in high resolution. Structural mechanics simulations were carried out on basis of the CT images. An immersed-boundary finite elements code is used. The generation of a conforming simulation mesh is not required, making the code suitable especially for complex geometries like porous objects. The same test specimens were subjected to destructive physical tensile tests. We show that there is a very good correlation between the predicted and measured tensile strengths, and that the location of the first crack occurrence can be forecasted accurately.</p></div>","PeriodicalId":20470,"journal":{"name":"Procedia Engineering","volume":"213 ","pages":"Pages 69-78"},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proeng.2018.02.008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77346089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 31