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Integrated MUSIC array for high-precision damage diagnosis in complex composite structures.

Fei Zheng1, Shenfang Yuan1, Qiuhui Xu1

  • 1Research Center of Structural Health Monitoring and Prognosis, State Key Laboratory of Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, 29 Yudao Street, Nanjing 210016, China.

Ultrasonics
|August 2, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces an integrated Multiple Signal Classification (MUSIC) array for precise damage imaging in complex composite structures. The new method enhances accuracy and reliability for aircraft structural health monitoring.

Keywords:
Complex composite structuresConsistency controlDamage localizationFocus compensation algorithmIntegrated MUSIC array

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Area of Science:

  • Materials Science
  • Aerospace Engineering
  • Structural Health Monitoring

Background:

  • Guided Wave (GW)-based Multiple Signal Classification (MUSIC) damage imaging offers high resolution for composite structures.
  • Challenges include sensor performance variability, wiring weight, signal attenuation in complex geometries, and phase errors due to manual placement and anisotropy.
  • These issues reduce imaging accuracy and long-term sensor reliability in aircraft applications.

Purpose of the Study:

  • To propose a high-precision integrated MUSIC array for diagnosing complex composite damage.
  • To address challenges in damage imaging for materials with intricate structures.
  • To improve accuracy, reduce weight, and enhance adaptability for complex structural configurations.

Main Methods:

  • Utilized impedance curve screening and surface-mount co-curing technology to manage sensor performance variation, enhance layout uniformity, and improve long-term stability.
  • Developed a focus compensation algorithm within the integrated MUSIC design to boost precision, minimize weight, and adapt to complex structures.
  • Experimentally validated the method on a complex composite wing box segment.

Main Results:

  • The integrated MUSIC array effectively manages sensor performance variations and improves layout uniformity.
  • The focus compensation algorithm enhances imaging precision and adaptability for complex structures.
  • Experimental validation demonstrated a maximum error of 2 cm in locating impact damage on a wing box segment.

Conclusions:

  • The proposed high-precision integrated MUSIC array effectively overcomes limitations of conventional methods for composite damage diagnosis.
  • The approach offers a reliable and accurate solution for structural health monitoring in complex composite aircraft structures.
  • This technology shows significant promise for enhancing aircraft safety and maintenance through precise damage localization.