What question did this study set out to answer?

To evaluate whether in-process photodetector optoelectronic signals can differentiate among quality states during the laser welding of steel and polymethyl methacrylate joints.

September 18, 2026MetalsOpen Access

Frequency-Band Exploratory Feature Analysis for Weld-Quality Correlation of Laser-Welded Steel–PMMA Joints Using Photodetector-Based In-Process Signal Acquisition

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Authors

YHYijie Huang BMBo Ma 罗罗耕星

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Overview

Exploratory laboratory study demonstrates distinct frequency-domain optical signal features across weld states in steel–PMMA joints, highlighting the feasibility of in-process quality monitoring.

Key Points

To evaluate whether in-process photodetector optoelectronic signals can differentiate among quality states during the laser welding of steel and polymethyl methacrylate joints.
Acquired in-process optoelectronic signals during laser welding of steel–PMMA joints under fixed laboratory parameters.
Obtained signal datasets corresponding to four defined welding states: weak welding, sound welding, discoloration, and carbonization.
Performed offline time-domain and frequency-domain post-processing, evaluating the spectrum and spectral energy within the 750–800 Hz band.
Observable discrepancies in frequency-domain characteristics were identified across all four laboratory-defined welding states.
Spectral energy within the 750–800 Hz visible light band exhibited qualitative variations corresponding to changes in weld condition from sound joints to defects.

Cite This Study

Huang et al. (2026) studied this question.

synapsesocial.com/papers/6aad0b72de0393d728b89c0c https://doi.org/10.3390/met16091033

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September 18, 2026MetalsOpen Access

Frequency-Band Exploratory Feature Analysis for Weld-Quality Correlation of Laser-Welded Steel–PMMA Joints Using Photodetector-Based In-Process Signal Acquisition

View Full Paper

Ask AI

Bookmark

Authors

YHYijie Huang BMBo Ma 罗罗耕星

Discussion

Member takes

Overview

Exploratory laboratory study demonstrates distinct frequency-domain optical signal features across weld states in steel–PMMA joints, highlighting the feasibility of in-process quality monitoring.

Key Points

To evaluate whether in-process photodetector optoelectronic signals can differentiate among quality states during the laser welding of steel and polymethyl methacrylate joints.
Acquired in-process optoelectronic signals during laser welding of steel–PMMA joints under fixed laboratory parameters.
Obtained signal datasets corresponding to four defined welding states: weak welding, sound welding, discoloration, and carbonization.
Performed offline time-domain and frequency-domain post-processing, evaluating the spectrum and spectral energy within the 750–800 Hz band.
Observable discrepancies in frequency-domain characteristics were identified across all four laboratory-defined welding states.
Spectral energy within the 750–800 Hz visible light band exhibited qualitative variations corresponding to changes in weld condition from sound joints to defects.

Cite This Study

Huang et al. (2026) studied this question.

synapsesocial.com/papers/6aad0b72de0393d728b89c0c https://doi.org/10.3390/met16091033

View Full Paper

Ask AI

Bookmark