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Measuring structural dynamics with smartphones

机译：用智能手机测量结构动态

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Dynamic analysis of structures plays an important role in designing civil engineering structures. Increasing population density and limited land availability have led to build taller, lighter and hence slender structures which attract high wind forces. Thus, there is an ever-growing demand for testing and monitoring dynamic responses of structures to understand performance under dynamic loading and estimate dynamic properties of structures. Since current techniques for dynamic testing are very costly, many avoid measuring dynamic responses until a problem arises. This paper presents a cost-effective method of dynamic measurements using readily available smartphones which are equipped with inbuilt accelerometers. A mobile application has been developed to acquire acceleration data from a smartphone and analyzed to estimate the dominant frequencies of a structure. Laboratory experiments has shown the potential of using smartphone as a reliable dynamic sensor.
机译：结构动态分析在设计土木工程结构方面发挥着重要作用。增加人口密度和有限的土地可用性导致构建更高，更轻，因此纤细的结构，吸引高风力。因此，对测试和监测结构的动态响应有不断增长的需求，以了解动态加载和结构的估计动态性能下的性能。由于动态测试的当前技术非常昂贵，因此在出现问题之前，许多避免测量动态响应。本文介绍了一种经济高效的动态测量方法，可用的可用智能手机配备内置加速度计。已经开发了一种移动应用程序来从智能手机获取加速数据，并分析以估计结构的主要频率。实验室实验显示了使用智能手机作为可靠动态传感器的潜力。

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