High Temperatures-high Pressures最新文献_第9页

Elastic constants and thermodynamic properties of AgY and CuY compounds under pressure and temperature effects 压力和温度作用下AgY和CuY化合物的弹性常数和热力学性质

IF 1.1 4区工程技术

High Temperatures-high Pressures Pub Date : 2021-01-01 DOI: 10.32908/hthp.v50.945

Lili Liu, Cai Chen, Gang Xu, Youchang Jiang, Y. Wen, Xianshi Zeng

引用次数: 0

Composition and dimension dependence of melting temperature in bimetallic nanoalloys 双金属纳米合金的成分及熔化温度对尺寸的依赖性

IF 1.1 4区工程技术

High Temperatures-high Pressures Pub Date : 2021-01-01 DOI: 10.32908/hthp.v50.981

M. Goyal

引用次数: 1

Thermal characteristics of epoxy as a bonding material in a low temperature vessel 环氧树脂作为粘结材料在低温容器中的热特性

IF 1.1 4区工程技术

High Temperatures-high Pressures Pub Date : 2021-01-01 DOI: 10.32908/hthp.v50.1069

Myung Su Kim, S. Jeong, Gi Seong Lee, Yeon Suk Choi

{"title":"Thermal characteristics of epoxy as a bonding material in a low temperature vessel","authors":"Myung Su Kim, S. Jeong, Gi Seong Lee, Yeon Suk Choi","doi":"10.32908/hthp.v50.1069","DOIUrl":"https://doi.org/10.32908/hthp.v50.1069","url":null,"abstract":"One of the main sources of heat leakage in a low temperature vessel is the thermal conduction of the vessel wall between room temperature and the low temperature. The material of the vessel is generally stainless-steel, and it is fabricated by welding. To reduce the amount of the thermal conduction, materials having low thermal conductivity are chosen. Glass fiber reinforced plastic (GFRP) is one of the adequate candidate materials because it has low thermal conductivity and high mechanical strength. We use GFRP pipe instead of stainless-steel pipe, as a neck in a liquid nitrogen vessel (or Dewar). Epoxy, as a bonding material, is inserted between the GFRP neck and the main body of the vessel. Therefore, the thermal characteristics, especially the thermal expansion, are very important because the vessel is cooled and warmed periodically. The experimental results of thermal expansion between room temperature and the low temperature are presented in the paper. Leakage in a vacuum environment is incurred because of different linear thermal expansion coefficients of various materials. The leakage is investigated using a vacuum-level checking method during the thermal cycle. In addition, the amount of boil-off in a low temperature vessel is discussed in terms of the thermal characteristics of the neck’s material.","PeriodicalId":12983,"journal":{"name":"High Temperatures-high Pressures","volume":"38 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69442078","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

Research on the temperature measurement of C919 aircraft landing gear during heat treatment C919飞机起落架热处理过程温度测量研究

IF 1.1 4区工程技术

High Temperatures-high Pressures Pub Date : 2021-01-01 DOI: 10.32908/hthp.v50.1007

W. Li, Junwei Jia, Zheng Li, Hongfei Cui, Xiaobo Lu, Jian Min, Zhan Liu, Shaofei Li, Jincheng Jia

{"title":"Research on the temperature measurement of C919 aircraft landing gear during heat treatment","authors":"W. Li, Junwei Jia, Zheng Li, Hongfei Cui, Xiaobo Lu, Jian Min, Zhan Liu, Shaofei Li, Jincheng Jia","doi":"10.32908/hthp.v50.1007","DOIUrl":"https://doi.org/10.32908/hthp.v50.1007","url":null,"abstract":"The heat treatment process of C919 aircraft landing gear has to go through a series of strict environments such as vacuum, high temperature, oil quenching, and it has been a difficult problem to accurately measure the temperature of landing gear during heat treatment. A black box hi-temp measurement system is designed on basis of heat transfer theory in this paper. The thermal insulation structures are simulated by finite element analysis software ANSYS, and the simulation results indicate that the system can work continuously for 7 hours at 900 °C. The number and distribution of temperature measurement points are determined according to the standard of AMS 2750E. The temperature variations of measurement points in the process of vacuum furnace heating and oil quenching are real-time recorded by binding the hi-temp measurement system and the landing gear as a whole into the vacuum furnace and oil pool. The results show that the designed hi-temp measurement system has good stability and high accuracy, which is fully capable of withstanding vacuum, high temperature and oil quenching environments. It is the first time in China that this kind of temperature measuring problem has been solved, which is of great significance for the accurate verification of C919 aircraft landing gear during heat treatment process.","PeriodicalId":12983,"journal":{"name":"High Temperatures-high Pressures","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69442402","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

Influence of pressure on electro-mechanical properties of SrNbO3: A DFT study 压力对SrNbO3机电性能影响的DFT研究

IF 1.1 4区工程技术

High Temperatures-high Pressures Pub Date : 2020-01-01 DOI: 10.32908/hthp.v48.763

Saad Tariq, A. Batool, M. Faridi, M. Jamil, A. Mubarak, Nosheen Akbar

引用次数: 2

Measurement of thermophysical properties of solid materials by hot wire method combined with enantiomorphous heat-source theory 结合对映纯热源理论的热丝法测量固体材料的热物性

IF 1.1 4区工程技术

High Temperatures-high Pressures Pub Date : 2020-01-01 DOI: 10.32908/hthp.v49.901

Qinghua Chen, Weihao Gao, G. Su, Weijuan Guan, S. Xu, Melangi Momo Valex, Y. Ma

{"title":"Measurement of thermophysical properties of solid materials by hot wire method combined with enantiomorphous heat-source theory","authors":"Qinghua Chen, Weihao Gao, G. Su, Weijuan Guan, S. Xu, Melangi Momo Valex, Y. Ma","doi":"10.32908/hthp.v49.901","DOIUrl":"https://doi.org/10.32908/hthp.v49.901","url":null,"abstract":"At present, the thermophysical properties testing methods of solid materials are mostly based on infinite physical model. In order to ensure that the heat flux transmits within the sample and is not affected by the heat loss at the sample boundary, its boundary is usually set as an adiabatic boundary. Nevertheless, it will lead to the accumulation of heat. In order to achieve the hot wire method conveniently, solid material for which a thinner thickness can be measured and the effective test time of the experiment is flexible. By so doing, we improved the traditional parallel hot wire method. The temperature measuring points were arranged along the thickness direction of the sample instead of parallel to the hot wire, and the enantiomorphous heat-source theory was introduced to modify the effect of heat accumulation on the temperature rise of the sample. The thermophysical property of diatomite refractory brick, asbestos board and marble were measured. The results show that the revised calculated values are in good agreement with the existing test values, with a maximum error of 5%, effectively expanding the application range of the hot wire method.","PeriodicalId":12983,"journal":{"name":"High Temperatures-high Pressures","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69441660","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

Methods of temperature determination and measurement verification in applications related to hot die forging processes 热模锻工艺中温度测定和测量验证方法

IF 1.1 4区工程技术

High Temperatures-high Pressures Pub Date : 2020-01-01 DOI: 10.32908/hthp.v49.793

M. Hawryluk, P. Widomski, M. Kaszuba, S. Polak

{"title":"Methods of temperature determination and measurement verification in applications related to hot die forging processes","authors":"M. Hawryluk, P. Widomski, M. Kaszuba, S. Polak","doi":"10.32908/hthp.v49.793","DOIUrl":"https://doi.org/10.32908/hthp.v49.793","url":null,"abstract":"The article concerns the analysis of selected and the most frequently used methods for temperature measurements in the aspect of their correct use in engineering applications related to industrial die forging processes. The research used the three most popular measuring devices, such as: monochromatic pyrometers with the simultaneous measurement of K-type thermocouple and thermal imaging camera. The research concerned mainly temperature measurements for forging tools divided into several stages in which individual tests were carried out, making detailed analyzes and indicating the most important measurement problems. Each subsequent research stage was in some way a consequence of the previous one. On this basis, the potential advantages and disadvantages of individual measurement methods were indicated and how one method can be verified by another one. It was indicated how and to what the best method or device should be used, so that the obtained result was correct and the person/engineer conducting such measurements was aware of the consequences of the conducted research and the problem of temperature measurements.","PeriodicalId":12983,"journal":{"name":"High Temperatures-high Pressures","volume":"49 1","pages":"223-239"},"PeriodicalIF":1.1,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69441668","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: 3

Interpretation of pulse-heating experiments for rhenium by quantum molecular dynamics 用量子分子动力学解释铼的脉冲加热实验

IF 1.1 4区工程技术

High Temperatures-high Pressures Pub Date : 2020-01-01 DOI: 10.32908/hthp.v49.837

D. Minakov, M. Paramonov, P. Levashov

引用次数: 4

Numerical study on thermoelectric-hydraulic performance of thermoelectric recuperator with wavy thermoelectric fins 波浪型热电翅片热电回热器热电-水力性能数值研究

IF 1.1 4区工程技术

High Temperatures-high Pressures Pub Date : 2020-01-01 DOI: 10.32908/hthp.v49.961

Na Li, Xingfei Yu, Jinhai Xu, Qiuwan Wang, T. Ma

引用次数: 1

Analysis of shape, size and structure dependent thermodynamic properties of nanowires 纳米线形状、尺寸和结构对热力学性质的影响分析

IF 1.1 4区工程技术

High Temperatures-high Pressures Pub Date : 2020-01-01 DOI: 10.32908/hthp.v48.733

M. Goyal, B. Gupta

引用次数: 30