... the effect of DM, and compression on the polytetrafluoroethylene (PTFE) binder fiberization, porosity, mechanical properties, electrical conductivity and electrochemical behaviors of electrodes. The DM study suggests that PTFE fiberization heavily relies on the degree of DM. Insufficient DM results in poor...

... detection while having a limited dataset. The results demonstrated that pre-trained EfficientNetB7 and InceptionV3 algorithms showed promising results, successfully classifying the test data with an accuracy of more than 94%. laser melting laser additive manufacturing in situ monitoring porosity...

... Abstract Additive manufacturing technology can process parts with complex shapes and has great application potential in the biomedical and aerospace industries. However, additively manufactured parts have a poor surface finish, high porosity, and large tensile residual stresses and thus have...

... Abstract The current work presents an understanding of microstructure and mechanical properties as a function of build geometry and build orientation in Cu-Cr-Zr via the laser powder bed fusion (LPBF) technique. Porosity, microstructure, and mechanical properties have been compared...

...-uniform part density. TIG is normally used in welding of aluminum because it results in fewer defects, but the TiC/TiB2 nanoparticles eliminate solidification cracking normally associated with high strength aluminum alloys during welding. Porosity is another problem faced when welding aluminum, which can...

...) cellular structure was refined at both grain and sub-grain scales. Further characterization by a three-dimensional focused ion beam-scanning electron microscopy tomography demonstrated the increased volume fraction of γ phase and the reduced porosity with GO addition. Finally, the surface strength...

...Proceedings of the ASME 2022 17th International Manufacturing Science and Engineering Conference MSEC2022 June 27-July 1, 2022, West Lafayette, Indiana, USA MSEC2022-80096 EFFECT OF POROSITY ON TOOL WEAR DURING MICROMACHINING OF ADDITIVE MANUFACTURED TITANIUM ALLOY Vinay Varghese Department...

... during the powder spreading process is essential to improve the quality of the final part. In this study, a Discrete H roller height (cm) Element Method (DEM) simulation is employed to evaluate the powder packing density, flowability, and porosity during powder k spring constant spreading process...

... 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...

.... composite materials friction stir additive manufacturing porosity solid-state manufacturing ADDITIVE FRICTION STIR DEPOSITION FOR FABRICATION OF SILICON CARBIDE METAL MATRIX COMPOSITES David Garcia1 and R. Joey Griffiths1, Hang Z. Yu1,* 1 Department of Materials Science and Engineering, Virginia Tech...

... 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...

... 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...

... 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...

... 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...

... of apparently ‘healthy’ 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...