[go: up one dir, main page]

Reijonen et al., 2024 - Google Patents

Effect of laser focal point position on porosity and melt pool geometry in laser powder bed fusion additive manufacturing

Reijonen et al., 2024

View HTML
Document ID
6026094270980956232
Author
Reijonen J
Revuelta A
Metsä-Kortelainen S
Salminen A
Publication year
Publication venue
Additive Manufacturing

External Links

Snippet

In laser powder bed fusion (PBF-LB) additive manufacturing (AM), the laser beam is the fundamental tool used to selectively melt metal powder layer-upon-layer to form a 3- dimensional part. Studies on the effect of the laser scanning parameters (power, speed …
Continue reading at www.sciencedirect.com (HTML) (other versions)

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/03—Observing, e.g. monitoring, the workpiece
    • B23K26/032—Observing, e.g. monitoring, the workpiece using optical means

Similar Documents

Publication Publication Date Title
Reijonen et al. Effect of laser focal point position on porosity and melt pool geometry in laser powder bed fusion additive manufacturing
KR102340573B1 (en) Systems and Methods for Measuring Radiated Thermal Energy During Additive Manufacturing Operations
US20220324056A1 (en) Systems and methods for measuring radiated thermal energy during an additive manufacturing operation
Grasso et al. Process defects and in situ monitoring methods in metal powder bed fusion: a review
DePond et al. In situ measurements of layer roughness during laser powder bed fusion additive manufacturing using low coherence scanning interferometry
WO2020185169A1 (en) Monitoring system and method of identification of anomalies in a 3d printing process
Luo et al. Vision-based weld pool boundary extraction and width measurement during keyhole fiber laser welding
Dastgerdi et al. Influence of internal and surface defects on the fatigue performance of additively manufactured stainless steel 316L
JPH11221686A (en) Method and apparatus for monitoring quality of laser beam weld part by measuring plasma size
JP2022515164A (en) Monitoring of material processing using imaging signal densities determined from in-line coherent imaging (ICI)
Aminzadeh A machine vision system for in-situ quality inspection in metal powder-bed additive manufacturing
Simonds et al. Simultaneous high-speed x-ray transmission imaging and absolute dynamic absorptance measurements during high-power laser-metal processing
CN111899215A (en) Method for extracting optical element body defects
Moshiri et al. Performance evaluation of in-situ near-infrared melt pool monitoring during laser powder bed fusion
Librera et al. On the use of areal roughness parameters to assess surface quality in laser cutting of stainless steel with CO2 and fiber sources
Zou et al. Multi-sensor monitoring of powder melting states via melt pool optical emission signals during laser-based powder bed fusion
JP2023066391A (en) Method and apparatus for monitoring laser processing process by means of speckle photometry
Deisenroth et al. Effects of shield gas flow on meltpool variability and signature in scanned laser melting
Remani et al. In-situ monitoring of laser-based powder bed fusion using fringe projection
Özel A review on in-situ process sensing and monitoring systems for fusion-based additive manufacturing
Lonardo et al. Surface characterization and defect detection by analysis of images obtained with coherent light
Latte et al. Key performance indexes for the evaluation of geometrical characteristics and subsurface defects through laser line monitoring of laser metal deposition process
Parikh et al. Volumetric defect analysis in friction stir welding based on three dimensional reconstructed images
Black et al. Dark field optical observation of polymer powder bed fusion for process monitoring and control
Sen et al. In-situ surface roughness evaluation of laser powder bed fusion surfaces using optical tomography