Online quality control of selective laser melting
Developing a Quality Inspection Method for Selective Laser Melting of Metals with NI Hardware and Software Tom Craeghs, Catholic University of Leuven "By building our system with the NI FlexRIO FPGA adapter module incorporated in an NI PXI system with LabVIEW, we can more effectively monitor and control the quality of the SLM process. This paper discusses the principle and the relevance of an in situ monitoring system for selective laser melting (SLM). This system enables the operator to monitor the quality of the SLM job on-line and estimate the quality of the part accordingly. The monitoring system consists of two major developments in hardware and software. The first development, essential for a suitable monitoring Online Quality Control of Selective Laser Melting By Tom Craeghs, Stijn Clijsters, Evren Yasa and Jean-Pierre Kruth Get PDF (2 MB) In situ quality control of the selective laser melting process using a high-speed, real-time melt pool monitoring system In situ quality control of the selective laser melting process using a high-speed, real-time melt Selective Laser Melting is utilized to build parts directly from CAD data. In this study layerwise monitoring of the temperature distribution is used to gather information about the process stability and the resulting part quality. Additive manufacturing techniques such as selective laser melting offer unique capabilities in the manufacture of geometrically-complex metal components, but online quality assurance and process control still remain major challenges.
Direct metal laser sintering (DMLS) AM technology is ideal for serial production for industries like aerospace. Setting up a process means mapping the input
Selective laser sintering additive manufacturing, compromise the repeatability, pre- laser- online monitoring and the development of control and error- positioning 2.2 Defects related to surface quality (finishing) Shrinkage can take place in 16 Apr 2019 Coaxial imaging of melt pool dynamics provides several advantages over other monitoring methods in selective laser melting (SLM). F. Dorsch, H. Braun, S. Keßler, D. Pfitzner, and V. Rominger, “Online characterization of laser beam “In situ quality control of the selective laser melting process using a additive manufacturing is selective laser melting (SLM), a powder bed fusion method. High-quality control of the built objects is important since they get used , for Real-time online monitoring would allow one to identify defects at an early meet the desired quality standard. The development of a framework for online quality control of Selective Laser Melting is the subject of this paper. The framework consists of two complementary systems: a system for visual inspection of powder deposition and a system for online and real-time monitoring of the melt pool. A combination of these two The development of a framework for online quality control of Selective Laser Melting is the subject of this paper. The framework consists of two complementary systems: a system for visual inspection of powder deposition and a system for online and real-time monitoring of the melt pool.
Additive manufacturing techniques such as selective laser melting offer unique capabilities in the manufacture of geometrically-complex metal components, but online quality assurance and process control still remain major challenges.
The development of a framework for online quality control of Selective Laser Melting is the subject of this paper. The framework consists of two complementary systems: a system for visual inspection of powder deposition and a system for online and real-time monitoring of the melt pool.
Craeghs, J. Kruth, Online Monitoring and quality control of Selective Laser Melting using optical sensors, Optimess, Antwerp, 2009. Google Scholar.
ERROR DETECTION IN LASER BEAM MELTING SYSTEMS BY HIGH RESOLUTION IMAGING . Online Quality Control of Selective Laser melting. In Proceedings of the Solid Freeform Fabrication symposium (SFF) 2010. pp. 212 - 226 Austin (Texas - USA), August 2010 ERROR DETECTION IN LASER BEAM MELTING SYSTEMS BY HIGH RESOLUTION IMAGING The selective laser melting apparatus used in this study is a Renishaw AM 250 containing a continuous wave Ytterbium fibre laser (wavelength of 1070 nm) that can output a maximum power of 200 W in continuous mode. Process temperature measurement for selective laser melting (SLM) can provide critical information such as melt pool dimension for real-time part quality control. In this study, a MCS640 LumaSense thermal imager was utilized to collect process radiant temperature information during SLM fabrication using Inconel718 powder.
Developing a Quality Inspection Method for Selective Laser Melting of Metals with NI Hardware and Software Tom Craeghs, Catholic University of Leuven "By building our system with the NI FlexRIO FPGA adapter module incorporated in an NI PXI system with LabVIEW, we can more effectively monitor and control the quality of the SLM process.
Selective Laser Melting (SLM) is a layer-wise material additive production process for the direct fabrication of functional metallic parts. Despite the progress made in improving the SLM process and part quality, an important issue still needing more investigation is online quality monitoring and control of the process. This paper discusses the principle and the relevance of an in situ monitoring system for selective laser melting (SLM). This system enables the operator to monitor the quality of the SLM job on-line and estimate the quality of the part accordingly. The monitoring system consists of two major developments in hardware and software. Controlling and monitoring the selective laser melting (SLM) process in real time to more accurately detect errors and maintain quality control. The Solution: Building a rapid, real-time monitoring system to control the SLM process and achieve online laser control using PXI, NI FlexRIO, vision, and LabVIEW software. In order to monitor and control the Selective Laser Melting process, Mercelis et al. developed a coaxial optical system. Since the optical path of the laser and the optical path of the sensor system are combined by a semi-reflective mirror, the sensors keep track of the melt pool, regardless of the scanner movement. In-Process Control of Selective Laser Melting by Quantitative Optical Tomography Joachim BAMBERG, Günter ZENZINGER, Alexander LADEWIG MTU Aero Engines AG, München, Germany Contact e-mail: Joachim.Bamberg@mtu.de Abstract. Selective laser melting is a promising technology for additive manufacturing of complex shaped parts. Selective Laser Melting is utilized to build parts directly from CAD data. In this study layerwise monitoring of the temperature distribution is used to gather information about the process stability and the resulting part quality.
16 Apr 2019 Coaxial imaging of melt pool dynamics provides several advantages over other monitoring methods in selective laser melting (SLM). F. Dorsch, H. Braun, S. Keßler, D. Pfitzner, and V. Rominger, “Online characterization of laser beam “In situ quality control of the selective laser melting process using a additive manufacturing is selective laser melting (SLM), a powder bed fusion method. High-quality control of the built objects is important since they get used , for Real-time online monitoring would allow one to identify defects at an early meet the desired quality standard. The development of a framework for online quality control of Selective Laser Melting is the subject of this paper. The framework consists of two complementary systems: a system for visual inspection of powder deposition and a system for online and real-time monitoring of the melt pool. A combination of these two The development of a framework for online quality control of Selective Laser Melting is the subject of this paper. The framework consists of two complementary systems: a system for visual inspection of powder deposition and a system for online and real-time monitoring of the melt pool. Selective Laser Melting (SLM) is a layer-wise material additive production process for the direct fabrication of functional metallic parts. Despite the progress made in improving the SLM process and part quality, an important issue still needing more investigation is online quality monitoring and control of the process. This paper discusses the principle and the relevance of an in situ monitoring system for selective laser melting (SLM). This system enables the operator to monitor the quality of the SLM job on-line and estimate the quality of the part accordingly. The monitoring system consists of two major developments in hardware and software.