In-situ Infrared Thermographic Measurement of Powder Properties in Laser Powder Bed Fusion

dc.creatorLiu, Tao
dc.creatorKinzel, Edward C.
dc.creatorLeu, Ming C.
dc.date.accessioned2023-01-27T17:46:09Z
dc.date.available2023-01-27T17:46:09Z
dc.date.issued2022
dc.description.abstractThe laser powder-bed fusion (LPBF) process is strongly influenced by the characteristics of the powder layer, including its thickness and thermal transport properties. This paper presents an investigation of in-situ characterization of the powder layer using active infrared thermography. The printing laser beam is diffused and illuminates onto the powder bed’s top surface in various frequencies. A long-wavelength thermal camera monitors the surface temperature history. Insight is provided by a one-dimensional thermal model of the process, which shows the frequency dependence of the surface temperature amplitude and phase on the powder layer thickness and thermal properties. An experiment demonstrates the validity of this model and shows its potential for measuring local powder properties in-situ.en_US
dc.description.departmentMechanical Engineeringen_US
dc.identifier.urihttps://hdl.handle.net/2152/117345
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/44226
dc.relation.ispartof2022 International Solid Freeform Fabrication Symposiumen_US
dc.rights.restrictionOpenen_US
dc.subjectLaser powder bed fusion (L-PBF)en_US
dc.titleIn-situ Infrared Thermographic Measurement of Powder Properties in Laser Powder Bed Fusionen_US
dc.typeConference paperen_US

Access full-text files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
In-situ Infrared Thermographic Measurement of Powd.pdf
Size:
1.16 MB
Format:
Adobe Portable Document Format
Description:

License bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.64 KB
Format:
Item-specific license agreed upon to submission
Description: