Fire Science and Technology最新文献

Flame Retardant Waterborne Polyurethanes: Related Analytical Measurements 阻燃水性聚氨酯:相关分析测量

Fire Science and Technology Pub Date : 2023-01-01 DOI: 10.3210/fst.42.17

T. Akitsu, Akinori Honda, Yuya Higashi, Taiga Imae

引用次数: 0

Chemical Fires Associated with Two Major Earthquakes in Japan 日本两次大地震引发的化学火灾

Fire Science and Technology Pub Date : 2023-01-01 DOI: 10.3210/fst.42.1

Tsubasa Ishizaki, Dai Kamiyoshihara, Minami Saito, Masashi Shinkai, Kodai Nakamori, Tatsumi Nabekawa, Atsuki Furukawa, T. Akitsu

引用次数: 0

Modeling of Creep Behavior of High Strength Steel H-SA700 Columns at Elevated Temperature H-SA700高强度钢柱高温蠕变特性模拟

Fire Science and Technology Pub Date : 2022-01-01 DOI: 10.3210/fst.41.1

Quoc Tuan Phan, M. Kohno, Y. Murakami, Hoang Long Nguyen

{"title":"Modeling of Creep Behavior of High Strength Steel H-SA700 Columns at Elevated Temperature","authors":"Quoc Tuan Phan, M. Kohno, Y. Murakami, Hoang Long Nguyen","doi":"10.3210/fst.41.1","DOIUrl":"https://doi.org/10.3210/fst.41.1","url":null,"abstract":"Creeps is a significant component affecting steel's behavior at elevated temperatures. This paper describes an approach for using Abaqus finite element models to investigate the creep behavior of high strength steel H-SA700 with a yield strength of at least 700 MPa under high temperature conditions. The creep models developed in this research were used to characterize the creep behavior of steel column. They were based on a set of tensile tests conducted at temperatures ranging from 23 ° C to 600 ° C under constant temperature conditions. The mechanical properties of steel were adopted from the tensile test specified by JIS G 0567. The results of the tensile tests indicated that creep effects occur when the temperature of steel exceeds 400 ° C and the creep effect is regarded to be strongest at 500 ° C. Additionally, a user subroutine CREEP was designed to account for the creep effect of the high strength steel H-SA700. The factors affecting the time-dependent behavior of high strength steel, including the initial imperfection of columns, have been explored. The thermal expansion coefficients of this steel have been also identified. Taking creep behavior into account, it could be able to reasonably simulate the behavior of H-SA700 column during a fire test. Furthermore, this paper develops and explains a process for determining steel creep parameters without creep tests, which can be used to forecast the time-dependent behavior of other steel structures. on the general high temperature tensile test without doing creep test. The application of the developed method in considering thermal creep of steel at elevated temperatures conditions is further shown through the study of time dependent response of a column subjected to a fire. Finally, this paper develops and discusses the procedure for determining steel creep parameters and applying them to predict the creep behavior of other steel structures.","PeriodicalId":12289,"journal":{"name":"Fire Science and Technology","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88733259","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

The Early History of the Cone Calorimeter 锥形量热计的早期历史

Fire Science and Technology Pub Date : 2022-01-01 DOI: 10.3210/fst.41.21

Vyto Babrauskas

引用次数: 0

Heat Release Rate Estimate of Goods-Vehicle Fire Using the Singapore Fire Test Programme 利用新加坡火灾测试程序估算货物-车辆火灾的热释放率

Fire Science and Technology Pub Date : 2021-01-01 DOI: 10.3210/fst.40.39

M. K. Cheong, J. J. Lau, L. W Lim, M. Thong, K.W Leong

引用次数: 0

Risk of Fire and Health Hazards Due to Organic Solvents in Chemical Laboratories 化学实验室中有机溶剂的火灾风险和健康危害

Fire Science and Technology Pub Date : 2021-01-01 DOI: 10.3210/fst.40.15

Soron Yamauchi, Shunsuke Aoki, M. Mizuno, T. Akitsu

{"title":"Risk of Fire and Health Hazards Due to Organic Solvents in Chemical Laboratories","authors":"Soron Yamauchi, Shunsuke Aoki, M. Mizuno, T. Akitsu","doi":"10.3210/fst.40.15","DOIUrl":"https://doi.org/10.3210/fst.40.15","url":null,"abstract":"This report comprehensively explores the risks of organic solvents as both fire and health hazards based on the results of “working environment measurements”, as specified in Japan’s safety and health laws. The results in 2018 and 2019 in our chemical laboratory determined that the lids of many waste solvent containers were open, which may potentially result in both fire and health hazards. When organic solvents volatilize to fill a laboratory, the vapor may be markedly harmful to human health. Although the conditions in our laboratory have improved by 2020, our laboratory mainly uses methanol and acetone, both of which are highly flammable and could ignite to cause a fire. It should be noted that vaporizing liquid organic solvents and other gases are not under the purview of the Fire Service Act on Hazardous Materials (in Japan), which is limited to condensed or liquid phases with ignition and explosive properties. In this context, herein, we summarized the health hazards and fire hazards of organic solvents (category 4), including methanol, acetone and N,N-dimethylformamide, by analyzing the results of working environment measurements in our laboratory over a period of several years. From the perspective of health and fire safety, it is imperative to focus on strategies to mitigate the risks of organic solvents in chemical laboratories. The correlation of both aspects is also discussed based on the results.","PeriodicalId":12289,"journal":{"name":"Fire Science and Technology","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89928463","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

Analysis of Texts of Fire Accidents in University Chemistry Experiments Using AI Text Mining 基于AI文本挖掘的大学化学实验火灾事故文本分析

Fire Science and Technology Pub Date : 2021-01-01 DOI: 10.3210/fst.40.1

Natsuki Date, Kohei Yokosuka, T. Akitsu

引用次数: 0

Environmental Chemistry Related to Forest Fires and Fire Extinguishers 与森林火灾和灭火器相关的环境化学

Fire Science and Technology Pub Date : 2021-01-01 DOI: 10.3210/fst.40.25

Soron Yamauchi, Ryuya Okubo, Han-Mog Ko, Kaneyoshi Okada, Shizuya Saito, Momoka Hosoi, Shinichi Miki, Yuya Murakami, M. Mizuno, T. Akitsu

引用次数: 0

Applicability of the Reflection Index of Respiration Based on Heart Rate Variability Analysis to Firefighting Activity 基于心率变异性分析的呼吸反射指数在消防活动中的适用性

Fire Science and Technology Pub Date : 2020-01-01 DOI: 10.3210/fst.39.1

Yushi Ito, Y. Oka, Y. Kuriyama

{"title":"Applicability of the Reflection Index of Respiration Based on Heart Rate Variability Analysis to Firefighting Activity","authors":"Yushi Ito, Y. Oka, Y. Kuriyama","doi":"10.3210/fst.39.1","DOIUrl":"https://doi.org/10.3210/fst.39.1","url":null,"abstract":"Firefighting is one of the most physically demanding and hazardous occupations in any country. When the firefighting activity continues for extended periods of time, firefighters are at risk for a decline in their physical and mental work ability. To ensure their safety, it is important for firefighters to be knowledgeable regarding their own physical condition. We have introduced an index of cardiorespiratory load that reflects respiratory metabolism state, the reflection index of respiration ( RIR ). This index is derived based on data, obtained under designed load activities, performed in a shuttle run test and bicycle ergometer test. Therefore, the applicability and effectiveness of this index to activities involving severe physical activities at a firefighting site, have not yet been evaluated. The RIR was applied in a simulated firefighting activity test, conducted according to a standardized protocol. This standardized firefighting test protocol consisted of 13 activities and required continuous physical activity for 26 min. The following results were obtained. First, RIR showed a good response to load intensity even when the activity loads varied irregularly in time. Second, the variation of the RIR demonstrated a good correlation, both, with the respiratory metabolic state and the blood lactate levels. Third, the RIR presented high sensitivity in response to firefighters’ changes in body movements and respiration, during the simulated firefighting activity test. The proposed index, providing objective information that supplements a firefighter’s subjective assessment of his or her own physical state, could be applied in the prevention of overexertion and is expected to improve the occupational safety of firefighters.","PeriodicalId":12289,"journal":{"name":"Fire Science and Technology","volume":"88 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76565834","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: 2

Fire at Notre Dame Cathedral and Lead Materials in the Environment 巴黎圣母院的火灾和环境中的铅材料

Fire Science and Technology Pub Date : 2020-01-01 DOI: 10.3210/fst.39.17

Natsuki Date, Atoki Sato, Kazuya Takeuchi, Toshihiro Mori, Kohei Yokosuka, Yuki Ito, K. Shima, Keigo Suzuki, H. Taguchi, Tomohiro Chiyozaki, Kento Yanagawa, Tom Giles, T. Akitsu

引用次数: 1