Journal of Fire Sciences最新文献_第7页

Mine conveyor belt fire classification 矿井输送带防火分类

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2021-11-30 DOI: 10.1177/07349041211056343

Manuel J. Barros-Daza, K. Luxbacher, B. Lattimer, J. Hodges

引用次数: 4

Jetfire lab: Jetfire at reduced scale 喷气火实验室:缩小规模的喷气火

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2021-11-01 DOI: 10.1177/07349041211037192

J. Sarazin, Elsa Franchini, V. Dréan, Roman Chiva, S. Bourbigot

引用次数: 1

Evaluation of propane explosion with applied water mist 应用细水雾评价丙烷爆炸

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2021-11-01 DOI: 10.1177/07349041211043201

Ping-Jung Li, Chao-Shi Chen, Cheng-Yu Weng, Hsin-Hsiu Ho

引用次数: 0

Development of a pyrolysis model for oriented strand board: Part II—Thermal transport parameterization and bench-scale validation 定向刨花板热解模型的发展:第二部分-热传递参数化和实验规模验证

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2021-11-01 DOI: 10.1177/07349041211036651

Junhui Gong, Hongen Zhou, Hong Zhu, Conor G. McCoy, S. Stoliarov

{"title":"Development of a pyrolysis model for oriented strand board: Part II—Thermal transport parameterization and bench-scale validation","authors":"Junhui Gong, Hongen Zhou, Hong Zhu, Conor G. McCoy, S. Stoliarov","doi":"10.1177/07349041211036651","DOIUrl":"https://doi.org/10.1177/07349041211036651","url":null,"abstract":"Oriented strand board is a widely used construction material responsible for a substantial portion of the fire load of many buildings. To accurately model oriented strand board fire response, kinetics and thermodynamics of its thermal decomposition and combustion were carefully characterized using milligram-scale testing in part I of this study. In the current work, Controlled Atmosphere Pyrolysis Apparatus II tests were performed on representative gram-sized oriented strand board samples at a range of radiant heat fluxes. An automated inverse analysis of the sample temperature data obtained in these tests was employed to determine the thermal conductivities of the undecomposed oriented strand board and condensed-phase products of its decomposition. A complete pyrolysis model was formulated for this material and used to predict the mass loss rates measured in the Controlled Atmosphere Pyrolysis Apparatus II experiments. These mass loss rate profiles were predicted well with the exception of the second mass loss rate peak observed at 65 kW m−2 of radiant heat flux, which was underpredicted. To further validate the model, cone calorimeter tests were performed on oriented strand board at 25 and 50 kW m−2 of radiant heat flux. The results of these tests, including both mass loss rate and heat release rate profiles, were predicted reasonably well by the model.","PeriodicalId":15772,"journal":{"name":"Journal of Fire Sciences","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2021-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48864535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Simulation of the burning and dripping cables in fire using the particle finite element method 用颗粒有限元法模拟火灾中电缆的燃烧和滴水

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2021-10-08 DOI: 10.1177/07349041211039752

J. Marti, B. Schartel, E. Oñate

{"title":"Simulation of the burning and dripping cables in fire using the particle finite element method","authors":"J. Marti, B. Schartel, E. Oñate","doi":"10.1177/07349041211039752","DOIUrl":"https://doi.org/10.1177/07349041211039752","url":null,"abstract":"The behavior of the cable jacket in fire characterized by the tendency to melt and drip constitutes a major source of fire hazard. The reason is that the melted material may convey the flame from one point to another, expanding fire and contributing to the fire load. In this article, the capability of a new computational strategy based on the particle finite element method for simulating a bench-scale cables burning test is analyzed. The use bench-scale test has been previously used to simulate the full-scale test described in EN 50399. As the air effect is neglected, a simple combustion model is included. The samples selected are two cables consisting of a copper core and differently flame retarded thermoplastic polyurethane sheets. The key modeling parameters were determined from different literature sources as well as experimentally. During the experiment, the specimen was burned under the test set-up condition recording the process and measuring the temperature evolution by means of three thermocouples. Next, the test was reproduced numerically and compared with a real fire test. The numerical results show that the particle finite element method can accurately predict the evolution of the temperature and the melting of the jacket.","PeriodicalId":15772,"journal":{"name":"Journal of Fire Sciences","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2021-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48939769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Performance optimization of thin fire blankets by varying their radiative properties 通过改变薄防火毯的辐射特性优化其性能

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2021-10-07 DOI: 10.1177/07349041211050328

K. Brent, J. T’ien

{"title":"Performance optimization of thin fire blankets by varying their radiative properties","authors":"K. Brent, J. T’ien","doi":"10.1177/07349041211050328","DOIUrl":"https://doi.org/10.1177/07349041211050328","url":null,"abstract":"In using thin fire blankets to protect structures in wildfires, heat rejections by radiation (reflection and emission) are essential for good performance. By varying the radiative properties of the front and back surfaces of the blankets, this article offers an optimization study of several scenarios of incident heat flux including pure convection, pure radiation, and combinations of the two. Two types of blanket heat-blocking efficiencies are studied in the optimization scheme. An overall efficiency is defined as the amount of incident heat blocked to the total amount of incident heat in specified wildfire scenarios. An instantaneous heat-blocking efficiency is defined as the instantaneous heat flux blocked to the instantaneous incident total heat flux which provides good understanding of the physics of heat-blocking mechanisms of fire blanket under quasi-steady conditions. In addition to maximizing these heat-blocking efficiencies, there are other optimization objectives, including the minimization of the blanket backside temperature. A genetic algorithm is used for the multi-objective optimization schemes. For the transient heat incidence, the optimization for the entire time sequence is performed with the possibility of a change of blanket radiative properties during the fire sequence, accounting for changes to the fire-facing surface caused by the incident heat.","PeriodicalId":15772,"journal":{"name":"Journal of Fire Sciences","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2021-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45664907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bench-scale experimental study on the fire behavior of electric cable arrays by considering different layouts 考虑不同布局的电缆阵列火灾特性的台架试验研究

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2021-09-20 DOI: 10.1177/07349041211043238

Zhouquan Cai, Xiao Chen, Jiaqing Zhang, Shouxiang Lu

{"title":"Bench-scale experimental study on the fire behavior of electric cable arrays by considering different layouts","authors":"Zhouquan Cai, Xiao Chen, Jiaqing Zhang, Shouxiang Lu","doi":"10.1177/07349041211043238","DOIUrl":"https://doi.org/10.1177/07349041211043238","url":null,"abstract":"The effect of different cable layouts on the fire behavior of electric cable arrays was experimentally studied. The influence of external heat flux on cable fire characteristics was investigated. Several parameters for electrical cables such as the post-burning morphology, ignition time, heat release rate, peak heat release rate and total heat release were obtained. The results show that cable layouts could affect cable charring degrees according to the post-burning morphology. A linear relationship was found in the transformed form of time to ignition and radiant heat flux, and the critical radiant heat flux value for the single cable array appeared smaller than that for the other two layouts. The peak heat release rate for Cables A–D with the single array presents the increasing trend with an increase in radiant heat flux, while the two parallel and intersectional cable arrays present the different trends. Moreover, the total heat release values of Cables A–D in the different cable layouts were analyzed. This work provides the basic data and preliminary investigation to fire engineering of cable arrays with the different layouts.","PeriodicalId":15772,"journal":{"name":"Journal of Fire Sciences","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2021-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42841444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Review of large-scale fire tests on cross-laminated timber 交叉层压木材大尺度防火试验综述

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2021-09-01 DOI: 10.1177/07349041211034460

G. Ronquillo, D. Hopkin, M. Spearpoint

引用次数: 11

Comparison of fire extinguishing performance of four halon substitutes and Halon 1301 四种哈龙替代品与哈龙1301的灭火性能比较

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2021-09-01 DOI: 10.1177/07349041211030188

Yawei Wang, G. Zou, C. Liu, Y. Gao

{"title":"Comparison of fire extinguishing performance of four halon substitutes and Halon 1301","authors":"Yawei Wang, G. Zou, C. Liu, Y. Gao","doi":"10.1177/07349041211030188","DOIUrl":"https://doi.org/10.1177/07349041211030188","url":null,"abstract":"The Halon 1301 fixed gas fire extinguishing system used in ship engine rooms has been banned from production all over the world, because halon destroys the ozone layer. Therefore, it is necessary to find an environmentally friendly, compatible and efficient alternative firefighting system. In this study, we performed fire extinguishing tests in an ISO9705 standard room for four alternative fire extinguishing agents, as well as Halon 1301. The fire extinguishing efficiency of each agent was determined based on its cooling effect, dilution effect of oxygen concentration, the extinguishing time of the oil pool fire and the re-ignition probability of the wood stack. The test results provide data support for the selection of alternatives of Halon 1301 from the aspect of fire extinguishing efficiency. Among these results, Novec 1230 had the best ability to put out the oil pool fire, and HFC-227ea suppressed the wood stack fire the best. The difference between the cooling ability of each fire extinguishing agent was small, and the inert gas (IG-541) displayed the best ability to dilute oxygen. Hot aerosol required the longest time to extinguish fire. Consequently, under the existing design standards, HFC-227ea had the better firefighting efficiency, more suitable to replace Halon 1301.","PeriodicalId":15772,"journal":{"name":"Journal of Fire Sciences","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/07349041211030188","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44371488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Polylactic acid flame-retarded by nano-compound of form II ammonium polyphosphate with montmorillonite 型聚磷酸铵与蒙脱土纳米复合阻燃聚乳酸

IF 1.9 4区工程技术

Journal of Fire Sciences Pub Date : 2021-08-13 DOI: 10.1177/07349041211025456

Yinglin Liu, Yina Liu, Rongjie Yang

{"title":"Polylactic acid flame-retarded by nano-compound of form II ammonium polyphosphate with montmorillonite","authors":"Yinglin Liu, Yina Liu, Rongjie Yang","doi":"10.1177/07349041211025456","DOIUrl":"https://doi.org/10.1177/07349041211025456","url":null,"abstract":"It is reported a convenient method to obtain flame-retardant polylactic acid composite by adding low amount of crystal form II ammonium polyphosphate (APP-II) or nano-compound of crystal form II ammonium polyphosphate with calcium-based montmorillonite. The structures and thermal properties of the crystal form II ammonium polyphosphate and crystal form II ammonium polyphosphate with calcium-based montmorillonite were characterized by X-ray diffraction, Fourier-transform infrared spectroscopy, and thermogravimetric analysis. Crystallography and morphologies of the polylactic acid and its composites with the crystal form II ammonium polyphosphate and crystal form II ammonium polyphosphate with calcium-based montmorillonite were measured through differential scanning calorimeter and scanning electron microscopy. In flame retardancy of the polylactic acid composites, the 5 wt% crystal form II ammonium polyphosphate could make the polylactic acid achieve the UL-94 vertical burning V-0 rating and limited oxygen index 27.3%. When using crystal form II ammonium polyphosphate with calcium-based montmorillonite in flame-retarding polylactic acid, only 3 wt% nano-compound can result in the same V-0 rating level and the limited oxygen index of 28.0%. Meanwhile, polylactic acid with crystal form II ammonium polyphosphate or crystal form II ammonium polyphosphate with calcium-based montmorillonite still keeps the good mechanical properties. The developed systems are environmentally friendly and highly effective flame retarding, which show a promising future in practical large-scale polylactic acid application.","PeriodicalId":15772,"journal":{"name":"Journal of Fire Sciences","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"2021-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44307938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4