Piezoelectric materials have been increasingly applied to a wide range of engineering and scientific applications in the past three decades. One application of interest involves wind tunnel testing to quantify and evaluate the aeroelastic behavior of aircraft wings. In this paper, the focus is on the suitability of piezoelectric sensors, namely PVDF (Polyinylidene Fluoride), to quantify the aeroelastic response of wing models by acquiring modal parameters, i.e. the natural frequencies and damping factors of the vibration modes. Concurrently, a complementary goal is to use PZT (Lead Zirconate Titanate) materials as actuators to better excite the vibration modes that are not adequately energized by the aerodynamic flow. During the setup phase of the experimental apparatus, several studies were performed to help define the test parameters. The aeroelastic tests were conducted in a wind tunnel using a single PZT as actuator and a single PVDF as sensor. The modal parameters obtained using a single PVDF sensor response were then compared with those estimated using laser doppler vibrometry. These parameters were then used to estimate the pre-flutter speed, using both sensing techniques, for three case studies with different mass ballast configurations. A very good agreement was observed between the two sensing techniques, when comparing the results in terms of the frequencies and damping factors of the mode shapes leading to flutter. The results show the suitability of using a single PVDF sensor to estimate the modal parameters, in very turbulent and noisy conditions that are characteristic in wind tunnel testing. PZT is found to reduce the exogenous noise caused by the aerodynamic flow when considering a high number of averages.

在过去的三十年中，压电材料越来越多地应用于广泛的工程和科学应用中。一个有趣的应用涉及风洞测试，以量化和评估飞机机翼的气动弹性行为。在本文中，重点是压电传感器，即 PVDF（聚偏二氟乙烯）的适用性，通过获取模态参数，即振动模式的固有频率和阻尼因子，量化机翼模型的气动弹性响应。同时，一个互补的目标是使用 PZT（锆钛酸铅）材料作为执行器，以更好地激发空气动力学流动未充分激发的振动模式。在实验装置的设置阶段，进行了多项研究以帮助定义测试参数。气动弹性测试是在风洞中进行的，使用单个 PZT 作为执行器，单个 PVDF 作为传感器。然后将使用单个 PVDF 传感器响应获得的模态参数与使用激光多普勒测振法​​估计的参数进行比较。然后使用这两种传感技术，将这些参数用于估计预颤振速度，用于具有不同质量镇流器配置的三个案例研究。在比较导致颤振的模态振型的频率和阻尼因子方面的结果时，在两种传感技术之间观察到了非常好的一致性。结果表明，在风洞测试中非常动荡和嘈杂的条件下，使用单个 PVDF 传感器来估计模态参数是合适的。