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A Study on Impact Force Detection Method Based on Piezoelectric Sensing.

Jianli Liu1,2, Chuang Hei1,3, Mingzhang Luo1

  • 1School of Electronics and Information, Yangtze University, Jingzhou 434023, China.

Sensors (Basel, Switzerland)
|July 27, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a novel method to detect impact force by analyzing stress waves. This approach accurately characterizes impact forces, enhancing mechanical part reliability and structural safety assessments.

Keywords:
impact detectionimpact forceimpact locationnumerical simulationpiezoelectric sensor

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Area of Science:

  • Mechanical Engineering
  • Materials Science
  • Vibration Analysis

Background:

  • Impact force detection is crucial for mechanical part reliability and longevity.
  • Transient impact events generate significant impulse forces, necessitating accurate characterization.
  • Understanding impact stress waves is key to indirect force measurement.

Purpose of the Study:

  • To propose and validate a method for indirectly characterizing impact force using stress wave analysis.
  • To establish a correlation between impact force and the resulting stress wave response.
  • To provide a reliable technique for impact force detection in engineering applications.

Main Methods:

  • Utilizing LS-DYNA software for explicit dynamic finite element analysis of a ball impacting a steel plate.
  • Establishing a correspondence between simulated impact force and measured impact response.
  • Building an experimental platform for validating the finite element model and detection method.

Main Results:

  • Finite element analysis successfully modeled the impact event and response.
  • A strong correlation was found between impact force and the detected stress wave signal.
  • Experimental results closely matched the finite element method predictions.

Conclusions:

  • The proposed method effectively characterizes impact force indirectly through stress wave detection.
  • Piezoelectric signals can reliably serve to characterize impact forces.
  • This technique offers valuable guidance for impact resistance design and safety assessments in engineering.