High-Temperature Universal Testing Machine
高温万能试验机
基本信息
- 批准号:428091604
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Major Research Instrumentation
- 财政年份:2019
- 资助国家:德国
- 起止时间:2018-12-31 至 无数据
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
The proposed 50 kN High-Temperature-Universal Testing Machine is a unique device, which is specifically designed, in order to test, analyse and study the thermomechanical properties of fiber reinforced ceramic matrix composites. Tensile-, flexural- and pressure-tests can be conducted from room temperature up to 1500 °C in air and flushing inert gases. In order to fulfil these challenging tasks, the device is equipped with two different furnaces. The first furnace consists of a long, split-tube furnace (diameter 100 mm) with temperatures up to 1550 °C. The second one, a short split furnace (85 mm height), is capable to test samples up to 1400 °C. Within the long, tube furnace tensile-, flexural- and pressure-tests are possible up to 1500 °C in air and in flushing gases, e.g. nitrogen or argon.The rod system of the load train is designed for the testing of brittle ceramic materials, by a spherical bearing and consists of SiC, which enables these high testing temperatures. The load train, the sample clamps and the sample itself is located in the hot region of the long, tube furnaces, which means a hot environment. Therefore, the maximum applicable temperature decreases to about 2 kN at 1400 °C.As an alternative approach, within the short split furnace, tensile tests are possible up to 1400 °C with 50 kN, because the sample clamps and fixtures are placed outside of the short furnace at moderate temperatures < 250 °C. This special setup enables the application of a metallic load train and the maximum force (50 kN) for CMC tensile samples and their fixation outside of the furnace in a "cold" environment.Additionally, due to the lower furnace volume, it is possible to save time. High temperature tests, run about three times faster, which increases the number of high temperatures tests per day. Another advantage of the short split furnace is the use of conventional sample fixtures, which are used at room temperature up to moderate temperatures. Therefore, even for testing and fixation of high performance fibers resp. ceramic fibers the short furnace is suitable up to 1400 °C.In order to find a suitable load transfer from the sample grips towards the ceramic samples, a specific shoulder loaded gripping setup is designed, which can be supported by face loading grips. Due to this setup, torsional- and flexural-moments can be prevented during the tensile tests. Finally, the strain measurement system should be mentioned, which is unique, like the complete universal testing machine. In order to prevent contact of strain measurement gages with the samples a contactless system, which consists of a laser-speckle-extensometer was chosen. This extensometer enable strain-speed controlled tests and do not need any marks on the surface of the samples. For flexural and pressure tests, the laser extensometer is partially suitable and will be supported by a Linear Variable Differential Transformer. For room temperature tests, a video extensometer is applicable.
50kN高温万能试验机是为测试、分析和研究纤维增强陶瓷基复合材料的热机械性能而专门设计的独特设备。拉伸、弯曲和压力测试可在室温至1500°C的空气和冲洗惰性气体中进行。为了完成这些具有挑战性的任务,该设备配备了两个不同的炉子。第一个加热炉由一个温度高达1550°C的长裂管加热炉(直径100 mm)组成。第二个加热炉是一个短裂管加热炉(高度85 mm),能够测试高达1400°C的样品。在长管式炉中,可以在空气和冲洗气体(如氮气或氩)中进行高达1500°C的拉伸、弯曲和压力测试。加载系统的杆系统是为通过球面轴承测试脆性陶瓷材料而设计的,由碳化硅组成,这使得这些高测试温度成为可能。装载列车、样品夹和样品本身位于长管式炉的热区,这意味着环境很热。因此,在1400°C时,最高适用温度降至约2 kN。作为另一种方法,在短裂式加热炉内,50 kN的拉伸试验最高可达1400°C,因为样品夹具和夹具放置在中温&250°C的短炉外。这种特殊设置使CMC拉伸样品能够施加金属加载系列和最大力(50 KN),并在“冷”环境中将其固定在炉外。此外,由于炉子体积较小,可以节省时间。高温测试,运行速度大约快三倍,这增加了每天高温测试的次数。短裂式加热炉的另一个优点是使用了常规的样品夹具,可在室温至中温下使用。因此,即使是对高性能纤维的测试和固定也是如此。陶瓷纤维短炉适用温度高达1400°C。为了找到合适的载荷从样品夹具到陶瓷样品的传递,设计了一种特殊的肩载式夹持装置,该装置可由端面加载夹持器支撑。由于这种设置,可以在拉伸测试期间防止扭矩和弯矩。最后,要提到应变测量系统,它是独一无二的,就像完整的万能试验机一样。为防止应变片与试件接触,选用了由激光散斑延伸仪组成的非接触式系统。这种引伸仪可以进行应变速度控制测试,不需要在样品表面做任何标记。对于弯曲和压力测试,激光引伸仪部分适用,并将由线性可变差动变压器支撑。对于室温测试,可以使用视频引伸仪。
项目成果
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其他文献
吉治仁志 他: "トランスジェニックマウスによるTIMP-1の線維化促進機序"最新医学. 55. 1781-1787 (2000)
Hitoshi Yoshiji 等:“转基因小鼠中 TIMP-1 的促纤维化机制”现代医学 55. 1781-1787 (2000)。
- DOI:
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LiDAR Implementations for Autonomous Vehicle Applications
- DOI:
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2021 - 期刊:
- 影响因子:0
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吉治仁志 他: "イラスト医学&サイエンスシリーズ血管の分子医学"羊土社(渋谷正史編). 125 (2000)
Hitoshi Yoshiji 等人:“血管医学与科学系列分子医学图解”Yodosha(涉谷正志编辑)125(2000)。
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Effect of manidipine hydrochloride,a calcium antagonist,on isoproterenol-induced left ventricular hypertrophy: "Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,K.,Teragaki,M.,Iwao,H.and Yoshikawa,J." Jpn Circ J. 62(1). 47-52 (1998)
钙拮抗剂盐酸马尼地平对异丙肾上腺素引起的左心室肥厚的影响:“Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,
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