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August 1, 2025Open Access

Assessment of laser weld bead quality via acoustic emission and optical coherence tomography

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Authors

LHLi‐Yi HsuSPS ParcheganiHLH H Libutti-Núñez

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Overview

This assessment links laser welding quality to acoustic emission characteristics and keyhole depth in E36 steels, suggesting new quality assurance methods.

Key Points

  • A positive relationship exists between laser power changes and both acoustic emission characteristics and keyhole depth.
  • Using an optical microphone and optical coherence tomography, the study investigates weld quality in E36 grade structural steels.
  • The multi-sensor approach reveals distinct acoustic signatures that correlate with welding modes and penetration completeness.
  • Integration of this monitoring method into control loops may enhance quality assurance in various manufacturing applications.

Cite This Study

Hsu et al. (2025) studied this question.

synapsesocial.com/papers/68af431bad7bf08b1ead1aeehttps://doi.org/10.1088/1757-899x/1332/1/012037
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