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Displaying 301 - 325 of 657

Three-dimensional particle size, shape, and internal porosity characterization: Application to five similar titanium alloy (Ti-6Al-4V) powders and comparison to two-dimensional measurements

May 26, 2021
Author(s)
Edward Garboczi, Rainer Hebert, Yu Sun, Mark Aindow
In an earlier paper, titanium alloy (Ti-6Al-4V) powders from six different vendors were characterized with a number of methods in an attempt to distinguish these powders that were all nominally meeting additive manufacturing standards. One of the methods

Fabrication of 3D Printed Hydroxyapatite Composite Scaffolds for Bone Regeneration

May 19, 2021
Author(s)
Yoontae Kim, Eun-Jin Lee, Albert Davydov, Stanislav Frakhtbeyen, Jonathan Seppala, Laurence Chow, Tagaki Shozo, Stella Alimperti
Additive biomanufacturing has been adapted in a wide variety of biomedical and tissue engineering applications, including orthopedics. The ability to print biocompatible, patient-specific geometries with controlled porosity, mechanical strength has made

Neutron Imaging of Laser Melted SS316 Test Objects with Spatially Resolved Small Angle Neutron Scattering

April 21, 2021
Author(s)
Daniel S. Hussey, Adam J. Brooks, Caroline G. Lowery, Gerald L. Knapp, Bridget E. Cadigan, Shengmin Guo, Leslie G. Butler
A novel neutron far field interferometer is explored for sub-micron porosity detection in laser sintered SS316 test objects. The results shown are images and volumes of the first quantitative neutron dark-field tomography at various autocorrelation lengths

Lessons learned in the design of reference fiducials for layer-wise analysis of test coupons made by laser powder bed fusion

April 16, 2021
Author(s)
Massimiliano Ferrucci, Tom Craeghs, Sven Cornelissen, Michele Pavan, Wim Dewulf, Alkan Donmez
The ability to align ex-situ inspection data of an additively manufactured (AM) part to its build geometry can be helpful, for example, to correlate observed in-situ monitoring events or features to measured discontinuities, such as pores and cracks, in ex

Estimations of the effective Young's modulus of specimens prepared by fused filament fabrication

April 5, 2021
Author(s)
Lichen Fang, Yishu Yan, Ojaswi Agarwal, Jonathan Seppala, Kalman D. Migler, Thao D. Nguyen, Kevin Hemker, Sung Hoon Kang
The elastic response of homogeneous isotropic materials is most commonly represented by their Young's modulus (E), but geometric variability associated with additive manufacturing results in materials that are neither homogeneous nor isotropic. Here we
Displaying 301 - 325 of 657