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Exploring Model-Based Engineering Concepts for Additive Manufacturing

Lipman, Robert R.; McFarlane, Jeremy S. (University of Texas at Austin, 2015)

Robust geometry and tolerance representations are needed in additive manufacturing for precise part specification and interoperability with downstream activities such as manufacturing, inspection, and long-term archiving. ...

Systematical Determination of Tolerances for Additive Manufacturing by Measuring Linear Dimensions

Lieneke, T.; Adam, G.A.O.; Leuders, S.; Knoop, F.; Josupeit, S.; Delfs, P.; Funke, N.; Zimmer, D. (University of Texas at Austin, 2015)

Additive manufacturing offers many technical and economical benefits. In order to profit from these benefits, it is necessary to consider the manufacturing limits and restrictions. This applies in particular to the ...

Optical, Layerwise Monitoring of Powder Bed Fusion

Foster, B.K.; Reutzel, E.W.; Nassar, A.R.; Hall, B.T.; Brown, S.W.; Dickman, C.J. (University of Texas at Austin, 2015)

In powder bed fusion additive manufacturing, pre-placed layers of powder are successively fused to form three-dimensional components. During part build-up, flaws in the material or part geometry can occur and lead to an ...

Beyond Laser-by-Laser Additive Manufacturing - Voxel-Wise Directed Energy Deposition

Nassar, A.R.; Reutzel, E.W. (University of Texas at Austin, 2015)

Conventional additive manufacturing is a layer-by-layer process, reliant on the sequential deposition of 2-1/2 D layers oriented along a build axis. During directed energy deposition a feedstock is directed into a continuous ...

Extrusion-Based Additive Manufacturing of the Moisture-Cured Silicone Elastomer

Jin, Y.; Plott, J.; Shih, A.J. (University of Texas at Austin, 2015)

The extrusion-based additive manufacturing (AM) of moisture-cured silicone elastomer for complex freeform shape is studied. Due to its low elastic modulus and poor shape retaining ability during the layer-by-layer process, ...

A Novel Projection Based Electro-Stereolithography (PES) Process for Composite Printing

Pan, Yayue; Patil, Abhishek; Zhou, Chi (University of Texas at Austin, 2015)

Most current additive manufacturing processes can only process one material in one build. Few of them are able to fabricate multiple materials and composites, with limited choices of materials. In this research, we propose ...

Study of Infill Print Parameters on Mechanical Strength and Production Cost-Time of 3D Printed ABS Parts

Baich, Liseli; Manogharan, Guha (University of Texas at Austin, 2015)

The ever-growing adoption of Additive Manufacturing (AM) can be attributed to lowering prices of entry-level extrusion-based 3D Printers. It has enabled using AM for mainstream DIY, STEM education, prototypes and often, ...

Effect of Bimodal Powder Mixture on Powder Packing Density and Sintered Density in Binder Jetting of Metals

Bai, Yun; Wagner, Grady; Williams, Christopher B. (University of Texas at Austin, 2015)

The Binder Jetting Additive Manufacturing process provides an economical and scalable means of fabricating complex metal parts from a wide variety of materials. However, the performance metrics of the resulting sintered ...

Processing ODS Modified IN-625 Using Selective Laser Melting

Spierings, A.B.; Bauer, T.; Dawson, K.; Colella, A.; Wegener, K. (University of Texas at Austin, 2015)

Increasing the operating temperatures of power plant turbine generators is a universal method to increase the efficiency of steam and gas turbines. However, operating a plant at higher temperatures poses extreme challenges ...

Microstructure and Mechanical Characterisation of SLM Processed Haynes® 230®

Bauer, T.; Dawson, K.; Spierings, A.B.; Wegener, K. (University of Texas at Austin, 2015)

Selective Laser Melting (SLM) enables the production of complex near-net-shaped parts especially out of difficult to machine Nickel based alloys like Haynes® 230®. However, exact knowledge of the SLM processing windows ...