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RISMelt Pool Temperature Control for Laser Metal Deposition Processes—Part I: Online Temperature Control
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Melt pool temperature is of great importance to deposition quality in laser metal deposition processes. To control the melt pool temperature, an empirical process model describing the relationship ...
Melt Pool Temperature Control for Laser Metal Deposition Processes—Part II: Layer-to-Layer Temperature Control
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Heat input regulation is crucial for deposition quality in laser metal deposition (LMD) processes. To control the heat input, melt pool temperature is regulated using temperature controllers. ...
Layer-to-Layer Height Control for Laser Metal Deposition Process
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A laser metal deposition height control methodology is presented in this paper. The height controller utilizes a particle swarm optimization (PSO) algorithm to estimate model parameters between ...
Precision Motion Control Methodology for Complex Contours
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A general precision motion control methodology for complex contours is proposed in this paper. Each motion servomechanism dynamic model is divided into a linear portion and a portion containing ...
Dynamic Modeling of Powder Delivery Systems in Gravity-Fed Powder Feeders
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an approach for modeling powder delivery system dynamics in low flow rate applications. Discrete particle modeling (DPM) is utilized to analyze the motion of individual powder ...
Nonlinear Feed Effect in Machining Chatter Analysis
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Regenerative chatter is a major limitation to the productivity and quality of machining operations due to the excessive rate of tool wear and scrap parts which are produced. Machining chatter ...
Machining Process Monitoring and Control: The State-of-the-Art
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Research in automating the process level of machining operations has been conducted, in both academia and industry, over the past few decades. This work is motivated by a strong belief that ...
Empirical Dynamic Modeling of Friction Stir Welding Processes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Current friction stir welding (FSW) process modeling research is mainly concerned with the detailed analysis of local effects such as material flow, heat generation, etc. These detailed ...
Robust Machining Force Control With Process Compensation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Force control is an effective means of improving the quality and productivity of machining operations. Metal cutting force models are difficult to accurately generate and, thus, there is large ...
Nonlinear Modeling of Mechanical Gas Face Seal Systems Using Proper Orthogonal Decomposition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An approach based on proper orthogonal decomposition and Galerkin projection is presented for developing low-order nonlinear models of the gas film pressure within mechanical gas face seals. A ...