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Keywords: porosity
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Proceedings Papers

Proc. ASME. MSEC2021, Volume 1: Additive Manufacturing; Advanced Materials Manufacturing; Biomanufacturing; Life Cycle Engineering; Manufacturing Equipment and Automation, V001T01A009, June 21–25, 2021
Paper No: MSEC2021-63351
... and optimizing printing parameters during the powder spreading process is essential to improve the quality of the final part. In this study, a Discrete Element Method (DEM) simulation is employed to evaluate the powder packing density, flowability, and porosity during powder spreading process utilizing three...
Proceedings Papers

Proc. ASME. MSEC2020, Volume 1: Additive Manufacturing; Advanced Materials Manufacturing; Biomanufacturing; Life Cycle Engineering; Manufacturing Equipment and Automation, V001T01A042, September 3, 2020
Paper No: MSEC2020-8442
... Inconel 718 specimens is performed. Regions that lie near volumetric porosity defects were studied. Grain Orienta- tion Spread was utilized as a metric to quantify intra - granular deformation. It was seen that microstructure evolution of grains near defects is enhanced due to strain concentrations...
Proceedings Papers

Proc. ASME. MSEC2020, Volume 1: Additive Manufacturing; Advanced Materials Manufacturing; Biomanufacturing; Life Cycle Engineering; Manufacturing Equipment and Automation, V001T01A013, September 3, 2020
Paper No: MSEC2020-8532
... of tool geometries and processing conditions can lead to improved control of the reinforcement phase distribution and enable design of metal-matrix composites with tailored site-specific properties. Keywords: Composite materials, Friction stir, Additive manufacturing, Porosity, Solid-state manufacturing 1...
Proceedings Papers

Proc. ASME. MSEC2019, Volume 1: Additive Manufacturing; Manufacturing Equipment and Systems; Bio and Sustainable Manufacturing, V001T01A015, June 10–14, 2019
Paper No: MSEC2019-2987
... during laser scanning. additive manufacturing keyhole laser powder bed fusion porosity A NUMERICAL STUDY ON THE KEYHOLE FORMATION DURING LASER POWDER BED FUSION PROCESS Subin Shrestha and Y. Kevin Chou Additive Manufacturing Research Center University of Louisville Louisville, KY 40292...
Topics: Lasers
Proceedings Papers

Proc. ASME. MSEC2019, Volume 2: Processes; Materials, V002T03A046, June 10–14, 2019
Paper No: MSEC2019-2943
... Abstract In the present study, electron beam welding bead-on-plate of electrolytic pitched copper (ETP-Cu) plate was carried out to study the behavior of different defects formed in the weld by varying the beam oscillation amplitudes. The defects like spattering, spiking and porosity were...
Proceedings Papers

Proc. ASME. MSEC2019, Volume 2: Processes; Materials, V002T04A002, June 10–14, 2019
Paper No: MSEC2019-2752
... Abstract The hollow fiber membranes (HFMs) were widely used as tissue engineering scaffold. The efficacy of the HFMs were affected by the porosity of the HFMs. In this study, the HFMs were prepared with dry-jet wet spinning method. In order to improve the performance of the HFMs, different...
Proceedings Papers

Proc. ASME. MSEC2013, Volume 1: Processing, V001T01A026, June 10–14, 2013
Paper No: MSEC2013-1119
... The objective of the this work is to study the effect of weld repair and macro-porosities on fatigue properties and fatigue life of AISI 8630 cast steel subjected to bending cyclic loads. Test specimens were cut from a cast steel component that contains macro-porosities. To regain the structural...
Proceedings Papers

Proc. ASME. MSEC2009, ASME 2009 International Manufacturing Science and Engineering Conference, Volume 1, 365-371, October 4–7, 2009
Paper No: MSEC2009-84160
...’ aluminum can give up to 80% of dross. This raises question how dross gets formed. Recent research proposes that the formation of dross after remelting of the RSI is closely related to the solidification process in the ingot, specifically the formation of shrinkage porosity, hydrogen porosity, and hot...