Research on how to improve the accuracy of the SLM metallic parts

Păcurar, Răzvan; Bâlc, Nicolae; Prem, Florica

doi:10.1063/1.3589710

Cited by 18 publications

(13 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Creation of a mold after the production of two epithesis models (in lower and finer resolution) takes 7 days and reduces costs by up to 20% compared to the classic method of making epitheses, while maintaining similar quality. We are investigating the use of AM and other processes, such as selective laser sintering, in an attempt to further decrease the time required for mold production …”

Section: Discussionmentioning

confidence: 99%

Auricular epithesis

et al. 2016

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Auricular epithesis

et al. 2016

View full text Add to dashboard Cite

“…A different type of parameter study that has been published is the optimization of parameters to gain the best possible solution before the processing begins. The major works in this area have been from Pacurar et al [103], Casalino et al [104] and Aboutaleb et al [105]. Pacurar et al developed a system for automatically generating process parameters based on models of the process, while Casalino et al use a statistical optimization technique, and Aboutaleb et al uses a knowledge database approach, which catalogs the results from previous studies and selects the best parameters based on these results.…”

Section: Process Parameter Optimizationmentioning

confidence: 99%

Overhanging Features and the SLM/DMLS Residual Stresses Problem: Review and Future Research Need

2017

View full text Add to dashboard Cite

Abstract:A useful and increasingly common additive manufacturing (AM) process is the selective laser melting (SLM) or direct metal laser sintering (DMLS) process. SLM/DMLS can produce full-density metal parts from difficult materials, but it tends to suffer from severe residual stresses introduced during processing. This limits the usefulness and applicability of the process, particularly in the fabrication of parts with delicate overhanging and protruding features. The purpose of this study was to examine the current insight and progress made toward understanding and eliminating the problem in overhanging and protruding structures. To accomplish this, a survey of the literature was undertaken, focusing on process modeling (general, heat transfer, stress and distortion and material models), direct process control (input and environmental control, hardware-in-the-loop monitoring, parameter optimization and post-processing), experiment development (methods for evaluation, optical and mechanical process monitoring, imaging and design-of-experiments), support structure optimization and overhang feature design; approximately 143 published works were examined. The major findings of this study were that a small minority of the literature on SLM/DMLS deals explicitly with the overhanging stress problem, but some fundamental work has been done on the problem. Implications, needs and potential future research directions are discussed in-depth in light of the present review.

show abstract

“…A different type of parameter study that has been published is the optimization of parameters to gain the best possible solution before the processing begins. The major works in this area have been from Pacurar et al [102], Casalino et al [103], and Aboutaleb et al [104]. Pacurar et al developed a system for automatically generating process parameters based on models of the process, while Casalino et al use a statistical optimization technique, and Aboutaleb et al uses a knowledgedatabase approach which catalogs the results from previous studies and selects the best parameters based on these results.…”

Section: Process Parameter Optimizationmentioning

confidence: 99%

Overhanging Features and the SLM/DMLS Residual Stresses Problem: Review and Future Research Need

Patterson¹,

Messimer²,

Farrington³

2017

Preprint

View full text Add to dashboard Cite

A useful and increasingly common additive manufacturing (AM) process is the selective laser melting (SLM) or direct metal laser sintering (DMLS) process. SLM/DMLS can produce fulldensity metal parts from difficult materials, but it tends to suffer from severe residual stresses introduced during processing. This limits the usefulness and applicability of the process, particularly in the fabrication of parts with delicate overhanging and protruding features. The purpose of this study was to examine the current insight and progress made toward understanding and eliminating the problem in overhanging and protruding structures. To accomplish this, a survey of literature was undertaken, focusing on process modeling (general, heat transfer, stress and distortion, and material models), direct process control (input and environmental control, hardware-in-the-loop monitoring, parameter optimization, and post-processing), experiment development (methods for evaluation, optical and mechanical process monitoring, imaging, and design-of-experiments), support structure optimization, and overhang feature design; approximately 140 published works were examined. The major findings of this study were that a small minority of the literature on SLM/DMLS deals explicitly with the overhanging stress problem, but some fundamental work has been done on the problem. Implications, needs, and potential future research directions are discussed in-depth in light of the present review.

show abstract

Research on how to improve the accuracy of the SLM metallic parts

Cited by 18 publications

References 0 publications

Auricular epithesis

Auricular epithesis

Overhanging Features and the SLM/DMLS Residual Stresses Problem: Review and Future Research Need

Overhanging Features and the SLM/DMLS Residual Stresses Problem: Review and Future Research Need

Contact Info

Product

Resources

About