Impact Mechanical Response of a 2-2 Cement-Based Piezoelectric Sensor Considering the Electrode Layer Effect

Area of Science:

• Materials Science
• Mechanical Engineering
• Electrical Engineering

Background:

• Cement-based piezoelectric composites are vital smart materials for structural health monitoring and vibration control.
• Transient dynamic loads, like impact, can severely damage these composites, necessitating robust sensor designs.
• The influence of electrode layers on sensor response to impact is often overlooked but critical.

Purpose of the Study:

• To develop and validate a theoretical model for a 2-2 cement-based piezoelectric composite sensor subjected to impact loads.
• To investigate the vibration behaviors and dynamic characteristics of the sensor under transient loads.
• To analyze the impact of electrode material and geometric parameters on sensor performance.

Main Methods:

• Utilized the mode summation method and the virtual work principle for vibration analysis.
• Simulated impact loads using transient haversine wave loads in numerical simulations.
• Validated the theoretical model against numerical solutions for peak loads exceeding 500 kPa.

Main Results:

• The theoretical model demonstrated close agreement with numerical solutions, confirming its validity for impact load analysis.
• The study identified the significant influence of electrode material and geometric parameters on the sensor's dynamic characteristics.
• The electrode layer effect was successfully incorporated into the theoretical framework.

Conclusions:

• The developed theoretical framework accurately predicts the response of cement-based piezoelectric composite sensors to impact loads.
• Understanding the electrode layer effect is crucial for optimizing the design and performance of these sensors.
• This research provides valuable insights for designing resilient piezoelectric sensors for structural health monitoring applications.