十大网投平台信誉排行榜阿尔图纳分校 faculty and students are engaged in state-of-the-art research related to various aspects of rail transportation engineering.
正在进行的研究领域包括民用基础设施(例如.g. 铁路枕木、压舱物、路基等.), 铁轨上的互动, 铁路车辆安全, 替代燃料技术, 机车排放和燃油效率, 铁路安全数据分析, 铁路网分析.
除了我们在阿尔图纳的本地资源, 我们在宾州州立大学的伙伴关系, 包括拉尔森运输研究所(LTI), provide access to additional testing facilities and research partnerships. 此外, partnerships with local rail industry companies have opened opportunities for testing at other non-University facilities. 下面概述了几个当前的研究项目.
使用“SmartRock”监测压载物及路基
“SmartRock”, 由十大网投平台信誉排行榜开发, 是无线的, 3d打印装置,形状逼真的镇流器颗粒. 该装置由一个三轴陀螺仪组成, 三轴加速度计, 还有一个三轴磁强计, 哪一个可以记录粒子的旋转, 翻译和定位, 分别. 传感器的采样频率可达500hz, 因此,可以解决250赫兹的最大振动频率. The SmartRock is capable of sending raw data to a base station via Bluetooth for visualization and analysis. This proprietary device was utilized to monitor ballast particle movement under cyclic loading in laboratory tests. 在测试中, the SmartRocks were buried 25 cm below the tie in a ballast box, and the movements of the SmartRocks were compared with and without inclusion of geogrid. The tests successfully qualified and quantified the effect of geogrid on the particle movements under cyclic loading. 另外, the test results without geogrid were compared with Discrete Element Modeling simulations. A good agreement was observed between the simulated and recorded particle motions. 研究 studies have shown that SmartRock is capable of recording real-time particle movement, 因此, can serve as a fundamental research and monitoring tool for railroads in order to investigates ballast performance at an individual particle level. Field-testing has begun at a local test site and full scale field testing will begin later in 2016. 这项研究是由联邦铁路管理局资助的.
更多信息可以在 梯形的十字路口.
列车轨道交互建模
本研究, 由联邦铁路管理局资助, focuses on the track and subgrade dynamic behavior under different speed conditions, 尤其是接近火车的临界速度时. 为此目的, a 铁轨上的互动 model was developed by Penn State researchers to predict the track deflection, ground surface wave propagation and compressive stress in the track substructure. The model was successfully validated by the field tests conducted on the Amtrak Northeast Corridor at Kingston, 罗德岛州, 美国. The modeling suggested that the track would encounter significant increases in track deflection and stress level at the critical speed condition.
In addition to the prediction of critical speed, the capabilities of the modeling include:
- 利用挠度谱识别吊扎问题.
- 计算L/V比,研究轨道横向稳定性.
- Assessment of passenger comfort by obtaining the acceleration of car body.
提高货车计量的安全性和效率
每年, 成千上万的多维度, 或“高宽负载”(HWL), 这些货物在北美是用铁路运输的吗. 这些负载中有许多是高价值的, 高风险的出货量, presenting considerable operational challenges for the railroad carriers due to special handling requirements. Measurement methodologies and philosophies can vary widely among mechanical inspectors. 结果是, railroads have recently sought out new technologies to standardize the measurement process, 从而提高安全性, 效率, 准确性和文件. 诺福克南方公司在这方面发挥了带头作用. (NS), BNSF Railway and Union Pacific Railroad have all worked closely with InfraMeasure, Inc. to develop a patent pending, portable, laser-based measurement system known as SafeLoad®. In 2014 researchers at 十大网投平台信誉排行榜阿尔图纳分校 worked closely with InfraMeasure to study the progress of this technology development, 铁路行业内的采用, 员工培训的有效性. Repeatability tests performed among newly trained employees throughout 2014-2015 have indicated high levels of precision, 精度, 减少劳动力. 除了这些直接的好处, the early stages of implementation have highlighted a long-term need for standardized measurement training within the industry. Penn State has collaborated with InfraMeasure in developing training modules to standardize the education and training of SafeLoad operators.