Develop a Smart Flexible Beam Experiment Using Piezoceramic Sensors and Actuators

工程机械（56）概念验证项目正在开发一种多用途“智能”柔性梁实验，使用最先进的表面结合压电陶瓷传感器和致动器，用于课堂演示和实验室使用。传感器和致动器被连接到低成本的悬臂梁上，以利用其多功能能力，包括感知和对外部刺激作出反应的能力。该材料正在开发用于机械工程，土木工程和工程技术课程中的动力学，控制，机电一体化和智能结构相关课程的教学。实验包括（1）应变或振动测量，（2）二阶系统的动力学，（3）理解高阶动力学系统的伯德图表示，（4）模态频率和形状，（5）欠阻尼动力学系统的共振，（6）使用经典线性，现代和非线性控制方法的主动振动控制，以及（7）结构的有限元建模。该项目正在最先进的智能材料和结构实验室中开发，新兴技术的研究正在融入本科教育。为了评估不同学生群体的学生学习情况，该项目正在与Avlin社区学院、德克萨斯南方大学（一所少数民族服务机构）、南亚拉巴马大学和莱斯大学的合作者进行合作。评估策略包括形成性和总结性评估，以确定智能梁对招募少数民族的影响，在15个不同的班级中改善学生的学习，由10名不同的教师授课，以及该项目对激励学生攻读研究生的影响。 工业支持部门正在评估智能振动平台的技术方面，将其作为一种有效、低成本的商业教育产品，可以按计划制造和运行。该方案正在制作一张光盘和网络访问，供其他机构使用。

Engineering-Mechanical (56) The proof-of-concept project is developing a multi-purpose "smart" flexible beam experiment using state-of-the art surface-bound piezoceramic sensors and actuators for in-class demonstration and laboratory use. The sensors and actuators are being attached to a low-cost cantilever beam to utilize their multi-functional capabilities, which includes the ability to sense and to react to external stimuli. The material is being developed for instruction in dynamics, controls, mechatronics, and smart structures related courses in mechanical engineering, civil engineering, and engineering technology programs. Experiments include (1) strain or vibration measurements, (2) dynamics of a second order system, (3) understanding Bode diagram representation of a higher order dynamics system, (4) modal frequencies and shapes, (5) resonance of an under-damped dynamics system, (6) active vibration control using classical linear, modern, and non-linear control methods, and (7) finite element modeling of structures. The project is being developed in a state-of-the-art Smart Materials and Structural Laboratory where the research of emerging technologies are being integrated into undergraduate education. In order to assess student learning for different populations of students, the project is engaging collaborators at Avlin Community College, Texas Southern University, a minority serving institution, University of Southern Alabama and Rice University. Assessment strategies include both formative and summative evaluations to determine the impact that the smart beam has on recruiting minorities, improved student learning in 15 different classes that are taught by 10 different instructors, and the effect of the project on motivating students to pursue graduate studies. Industrial support is assessing the technical aspects of the smart vibration platform as an effective, low-cost commercially available educational product that can be manufactured and operated as planned. The program is developing a CD and web access for use at other institutions.