.png){kind=icon}
.png){kind=icon}
Return
Laser-Induced Ultrasound-Assisted LIBS for Matrix-Insensitive Element Quantification in Metal Additive Manufacturing
.png){kind=icon}
PRE
AI
Q
L
S
X
W
J
刘
H
DOI：10.1016/j.addma.2026.105226.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Metal additive manufacturing (MAM) requires tight control of alloying-element composition to avoid defects and ensure predictable microstructure and part performance. However, microscale segregation and evolving melt-pool conditions introduce strong matrix effects that degrade conventional laser-induced breakdown spectroscopy (LIBS) calibration, limiting its use for inline process control. Here, we develop a mechanistic spectro-ultrasonic framework that couples laser ultrasound (LU) with LIBS to achieve matrix-insensitive, cross-alloy elemental quantification for MAM. The LU field is characterized by three reproducible metrics—peak interferometric amplitude (A), signal energy (E = ∫A(t)²dt), and time–frequency envelope width (Δt from continuous wavelet transforms)—which are shown to map quantitatively onto key plasma attributes (temperature T, particle number density n0, and radiative path length l). These physics-grounded acoustic surrogates are embedded into a two-stage attention network (SU-MACNet) that performs mechanism-constrained spectral correction, suppressing matrix-induced nonlinearity across alloys and build conditions.
Keywords:
LIBS
laser-induced ultrasound
metal additive manufacturing
elemental quantification
matrix effects
Journal
IF:
11.1
Papers:
4.5K
Citations:
4.9W
Organization
Cited Papers