Short answer

When designing for additive manufacturing of metallic lattices, consider the achievable dimensional tolerances of ±0.3 mm with SLM and how porosity influences mechanical strength.

Field: Final Production
Source: The International Journal of Advanced Manufacturing Technology (2019)
Method: Experimental investigation and mechanical testing.
Evidence: Strong effect

Selective laser melting (SLM) can fabricate Ti6Al4V cellular lattice structures with controlled porosity, exhibiting dimensional accuracy within ±0.3 mm of the CAD model. This final production research insight is drawn from a 2019 study published in The International Journal of Advanced Manufacturing Technology. Using Experimental investigation and mechanical testing., researchers explored how this design variable affects real-world outcomes. The key design takeaway: When designing for additive manufacturing of metallic lattices, consider the achievable dimensional tolerances of ±0.3 mm with SLM and how porosity influences mechanical strength.

Study

Final ProductionHigh ImpactStrong effect

Selective Laser Melting Achieves ±0.3mm Dimensional Accuracy in Ti6Al4V Cellular Lattices

Selective laser melting (SLM) can fabricate Ti6Al4V cellular lattice structures with controlled porosity, exhibiting dimensional accuracy within ±0.3 mm of the CAD model.

The International Journal of Advanced Manufacturing Technology · 2019

Key Findings

01Dimensional accuracy of the fabricated structures differed from the CAD model by ±0.3 mm.
02The mechanical properties of the structures were evaluated under static compression.

Application

Design takeaway

When designing for additive manufacturing of metallic lattices, consider the achievable dimensional tolerances of ±0.3 mm with SLM and how porosity influences mechanical strength.

How to apply

When designing components requiring high precision and complex internal structures, such as custom medical implants or lightweight aerospace brackets, leverage SLM and account for the ±0.3 mm dimensional variation.

Project actions

01When using 3D printing for metallic prototypes, ensure your design accounts for potential minor deviations from the CAD model.
02Investigate how different infill patterns and densities affect the strength and weight of your 3D printed parts.

Method & Evidence

AimTo investigate the dimensional accuracy, surface morphology, and mechanical compression properties of Ti6Al4V cellular lattices fabricated by selective laser melting with varying porosity.

MethodExperimental investigation and mechanical testing.

ProcedureTi6Al4V cellular lattices with Schwarz D TPMS geometry, 60% and 80% porosity, and different pore sizes were fabricated using selective laser melting. Dimensional accuracy was measured against the CAD model. Surface morphology and porosity of the struts were examined. Static compression tests were performed to determine mechanical properties.

ContextAdditive manufacturing of metallic components.

Variables

IV["Porosity (60%, 80%)","Pore size"]

DV["Dimensional accuracy","Surface morphology","Mechanical properties (compression)"]

CV["Material (Ti6Al4V)","Fabrication method (Selective Laser Melting)","Lattice geometry (Schwarz D TPMS)"]

Strengths & Limitations

Strengths

+Direct measurement of dimensional accuracy.
+Inclusion of mechanical testing to assess performance.

Limitations

The study did not explore the impact of post-processing on dimensional accuracy or mechanical properties.

Reliability & validity

The study's reliability is supported by experimental procedures and quantitative measurements. Validity is established by directly assessing dimensional accuracy and mechanical properties relevant to the research aim.

Think critically

How might the surface morphology and internal porosity of the struts, as examined in this study, influence the fatigue life and overall performance of the lattice structure under cyclic loading?

Design Principles

"Design for Additive Manufacturing (DfAM) requires understanding the process capabilities and limitations to achieve desired form, fit, and function."

This level of precision in additive manufacturing is crucial for producing complex, custom components where tight tolerances are required. It enables designers to create intricate geometries with predictable performance, particularly in demanding applications like aerospace and biomedical implants.

What This Means for Your Design

3D printing metal parts with intricate internal structures using a laser can be very accurate, with the final part being very close to the computer design (within 0.3mm).

How to use in your project

1.Reference this study when discussing the feasibility and accuracy of using selective laser melting for complex designs in your design project.

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Quick Cite

Paragraph starter

The manufacturability of Ti6Al4V cellular lattices via selective laser melting has been demonstrated, with findings indicating dimensional accuracy within ±0.3 mm of the original CAD model. This precision is critical for applications demanding tight tolerances, such as in aerospace and medical device design, where complex geometries can be reliably produced.

Source

The International Journal of Advanced Manufacturing Technology

The manufacturability and compression properties of the Schwarz Diamond type Ti6Al4V cellular lattice fabricated by selective laser melting

journal · 2019

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Questions About This Research

What does the research say about selective laser melting achieves ±0.3mm dimensional accuracy in ti6al4v cellular lattices?: When designing for additive manufacturing of metallic lattices, consider the achievable dimensional tolerances of ±0.3 mm with SLM and how porosity influences mechanical strength. Evidence: The International Journal of Advanced Manufacturing Technology (2019).
Why does "Selective Laser Melting Achieves ±0.3mm Dimensional Accuracy in Ti6Al4V Cellular Lattices" matter for design?: This level of precision in additive manufacturing is crucial for producing complex, custom components where tight tolerances are required. It enables designers to create intricate geometries with predictable performance, particularly in demanding applications like aerospace and biomedical implants.
How can designers apply this research?: When designing for additive manufacturing of metallic lattices, consider the achievable dimensional tolerances of ±0.3 mm with SLM and how porosity influences mechanical strength.
What were the main findings?: Dimensional accuracy of the fabricated structures differed from the CAD model by ±0.3 mm.. The mechanical properties of the structures were evaluated under static compression.
What research method was used?: Experimental investigation and mechanical testing..
How strong is the evidence?: Evidence strength is rated Strong effect, based on a 2019 journal from The International Journal of Advanced Manufacturing Technology.
What should I do differently in my next project?: When designing components requiring high precision and complex internal structures, such as custom medical implants or lightweight aerospace brackets, leverage SLM and account for the ±0.3 mm dimensional variation.
What are the limitations?: The study focused on a specific material (Ti6Al4V) and a single additive manufacturing process (SLM). The long-term durability and fatigue performance were not assessed.