A thermal vibration experiment device for composite laminated plates based on the twodimensional laser scanning measuring device was developed. By using PLC controller, touch screen, guide rail, stepper motor, vibration exciter, power amplifier, laser vibrometer, heating and temperature control device, vibration controller and data acquisition and analysis device, the hardware system that met the requirement of hightemperature vibration measurement of laminated plates was established. Based on PLC ladder diagram language, the control software of twodimensional laser scanning measuring device was programmed, and the corresponding operation interface and measurement and control advantages of the manual and automatic control modules were introduced in detail. Taking the HF10 carbon fiber/resin plate specimen as an example, the device was studied. The results show that this device can be used to significantly improve the measuring efficiency of laminated plate structure modal shapes in a thermal environment, and it is beneficial to study the influence of different temperature on the structure vibration characteristics. It is found that the thermal environment has a complex effect on the natural frequency and damping properties of laminated plate structures, with the increasing of temperature, the modal damping ratio increases, but the increasing trend slows down.
TIAN Ying, XU Zhonghao, HAN Jintong, HU Xiaoyue, YANG Junjie, LI Hui. Development and Application of Thermal Vibration Measuring Device for Composite Laminated Plates Based on Twodimensional Laser Scanning[J]. Machine Tool & Hydraulics,2021,49(5):120-124