National Center for Defense Manufacturing and Machining (United States)

Influence of Heat Treatment and Thermal Aging on the Fatigue Performance of LPBF Fabricated AlSi10Mg Alloy

Edel Arrieta, Luis A. Marquez, L.E. Murr, Diego A. Ariza et autres

This investigation explores fatigue performance of laser powder bed fusion (LPBF)-fabricated AlSi10Mg alloy subjected to various post-processing treatments: stress relief (SR), Hot Isostatic Pressing (HIP), and HIP + T6, all followed by prolonged thermal aging at 177 °C for up to 1000 …

us (code pays fourni par la source)

Assessing the Effects of Build Interruptions Through In Situ Monitoring and Mechanical Testing for Nickel Alloy 718 and AlSi10Mg

Cameron Gygi, Emmaline Hutchison, Nick Gavin, Darren Takaoka et autres

us, jp (code pays fourni par la source)

DNA methylation sequencing data from known-age Eucalyptus camaldulensis trees for epigenetic clock development

Alyssa M. Budd, Janice Kerr, C. Anderson, Andrea Prior et autres

This collection contains raw RRBS sequence data and associated metadata from known-age Eucalyptus camaldulensis (river red gum) individuals. The data were generated to characterise age-associated DNA methylation patterns and develop an epigenetic clock for estimating the age of this long-lived hardwood species.

au, us, gb, bg (code pays fourni par la source)

MPAS Viewer Cookbook

Jorge Humberto Bravo Mendez, Bella Condo, Zavaleta Melissa, Ming Ge et autres

This repository provides examples of how to use MPAS-Viewer, a Python package for efficient visualization of Model for Prediction Across Scales (MPAS) data based on the Spherical Centroidal Voronoi Tessellation (SCVT) mesh.

us (code pays fourni par la source)

MPAS Viewer Cookbook

Jorge Humberto Bravo Mendez, Bella Condo, Zavaleta Melissa, Ming Ge et autres

This repository provides examples of how to use MPAS-Viewer, a Python package for efficient visualization of Model for Prediction Across Scales (MPAS) data based on the Spherical Centroidal Voronoi Tessellation (SCVT) mesh.

us (code pays fourni par la source)

Lightweight design of double-decker ball bearing based on loofah bionic characteristics

Jing Hu, Puyi Wang, Xinming Zhang, Xin Zhang et autres

cn, us (code pays fourni par la source)

An Industrial View of Industry 4.0

Joe Veranese, Sidney Martin, Marilyn Barger

Engineering technicians (ET) maintain equipment and ensure smooth operations across various facilities.Their responsibilities go beyond setting up and installing new equipment.They often work alongside engineers and technologists in research and product development, contributing significantly to the company's success.This paper provides information from …

us, ru, mm (code pays fourni par la source)

Synergistic Effects of Notch and Volumetric Defects on Fatigue Performance of Additive Manufactured Parts

Arun Poudel, Jonathan Pegues, Matthew Lowney, Shuai Shao et autres

The usage of additively manufactured (AM) notched components for fatigue-critical applications presents non-trivial challenges, such as the ubiquitous presence of volumetric defects in AM parts. Volumetric defects accelerate fatigue crack nucleation, impact short crack growth, and are near-impossible to fully eliminate. This …

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Assessing the Printability of Rene 65 Powder for Repairing Degraded GTD 111 Gas Turbine Blades Using L-DED and L-PBF

Henry León‐Henao, Edward D. Herderick, Alejandro Toro, J. Giraldo et autres

Restoring components in the hot gas path of turbine engines after service-induced degradation is crucial for economic efficiency. This study investigates the printability of Rene 65 powder on a degraded first-stage turbine blade using two additive manufacturing techniques: Laser Powder Bed Fusion …

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Integrating ICME Practices into Design Systems and Structural Analysis

Michael D. Sangid, John F. Matlik, Akin Keskin, Ben Thacker et autres

us, gb, ca (code pays fourni par la source)

Agile Electro-Mechanical Product Accelerator - Final Research Performance Progress Report

B. Schmidt

NCDMM recognized the need to focus on the most efficient use of limited resources while ensuring compliance with regulations and minimizing the energy intensity and environmental impact of manufactured components. This was accomplished through the evaluation of current machining and processing practices, …

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Advancing the Additive Manufacturing Workforce: Summary and Recommendations From a NSF Workshop

Christopher B. Williams, Timothy W. Simpson, Michael Hripko

Accompanying the increasing advances and interest in Additive Manufacturing (AM) technologies is an increasing demand for a workforce that is knowledgeable about the technologies and how to employ them to solve engineering problems. As a step towards addressing this knowledge gap, a …

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