Model-based feedforward control of laser powder bed fusion additive manufacturing
Control of laser power to improve part quality is critical for fabrication of complex
components via Laser Powder Bed Fusion (LPBF) additive manufacturing (AM) processes. If …
components via Laser Powder Bed Fusion (LPBF) additive manufacturing (AM) processes. If …
A meltpool prediction based scan strategy for powder bed fusion additive manufacturing
In this study a feedforward control method for laser powder bed fusion additive
manufacturing is demonstrated. It minimizes the meltpool variation by updating the laser …
manufacturing is demonstrated. It minimizes the meltpool variation by updating the laser …
Iterative simulation-based techniques for control of laser powder bed fusion additive manufacturing
One of the challenges for process control of laser powder bed fusion additive manufacturing
lies in thermal control. Excessively low laser power may lead to incomplete melting, while …
lies in thermal control. Excessively low laser power may lead to incomplete melting, while …
Real-time process monitoring and closed-loop control on laser power via a customized laser powder bed fusion platform
Additive manufacturing (AM) is one of the most effective ways to fabricate parts with complex
geometries using various materials. However, AM also suffers from printing quality issues …
geometries using various materials. However, AM also suffers from printing quality issues …
Gaussian-process based modeling and optimal control of melt-pool geometry in laser powder bed fusion
Studies have shown that melt-pool characteristics such as melt-pool size and shape are
highly correlated with the formation of porosity and defects in parts built with the laser …
highly correlated with the formation of porosity and defects in parts built with the laser …
Thermal control of laser powder bed fusion using deep reinforcement learning
F Ogoke, AB Farimani - Additive Manufacturing, 2021 - Elsevier
Powder-based additive manufacturing techniques provide tools to construct intricate
structures that are difficult to manufacture using conventional methods. In Laser Powder Bed …
structures that are difficult to manufacture using conventional methods. In Laser Powder Bed …
Implementation of advanced laser control strategies for powder bed fusion systems
Laser path, scan speed, and laser power are critical machine parameters for determining the
quality of the output of laser-based powder bed fusion (LPBF) processes. A jerk-limited …
quality of the output of laser-based powder bed fusion (LPBF) processes. A jerk-limited …
A residual heat compensation based scan strategy for powder bed fusion additive manufacturing
Typical scan strategies for laser powder bed fusion (LPBF) additive manufacturing systems
apply a constant laser power and scan speed. Localized preheating from adjacent scan …
apply a constant laser power and scan speed. Localized preheating from adjacent scan …
Feedforward control of thermal history in laser powder bed fusion: Toward physics-based optimization of processing parameters
We developed and applied a model-driven feedforward control approach to mitigate thermal-
induced flaw formation in laser powder bed fusion (LPBF) additive manufacturing process …
induced flaw formation in laser powder bed fusion (LPBF) additive manufacturing process …
Layer-to-layer closed-loop feedback control application for inter-layer temperature stabilization in laser powder bed fusion
In laser powder bed fusion (LPBF), part quality and process conditions are highly dependent
on the interlayer temperature (ILT) of the exposure surface of printed parts. State-of-the-art …
on the interlayer temperature (ILT) of the exposure surface of printed parts. State-of-the-art …