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70 results found

Process-structure-properties investigations for laser powder bed fused IN718 in the as-built condition

Data provided by  National Institute of Standards and Technology

This data repository provides a central location for a body of work using one build of nickel-based alloy 718 (IN718) material and resulted in three different studies. The IN718 parts were manufactured by laser powder bed fusion using a range of laser energy densities (manipulation of processing variables) and orientations with respect to the build direction. The influence of processing variables on resulting grain structures, pore structures, and mechanical properties were studied in the as-built (not heat treated) condition.

Tags: additive manufacturing,Laser Powder Bed Fusion,Inconel 718,High-cycle fatigue life,Fractography,surface roughness,microstructure,defects,porosity,Tensile properties,Characterization,Ductile fracture,x-ray computed tomography,

Modified: 2024-02-22

Views: 0

Additive Manufacturing Profile

Data provided by  National Institute of Standards and Technology

Contains associated data for the manuscript "Layered Security Guidance for Data Asset Management in Additive Manufacturing" by Fahad Milaat and Joshua Lubell. The associated data is the source of the OSCAL representations in Section 4 of the manuscript.

Tags: additive manufacturing,cybersecurity framework,Asset Management,Profile,

Modified: 2024-02-22

Views: 0

"pyproject2conda": A script to convert `pyproject.toml` dependencies to `environemnt.yaml` files.

Data provided by  National Institute of Standards and Technology

The main goal of `pyproject2conda` is to provide a means to keep all basicdependency information, for both `pip` based and `conda` based environments, in`pyproject.toml`. I often use a mix of pip and conda when developing packages,and in my everyday workflow. Some packages just aren't available on both. The application provides a simple comment based syntax to add information to dependencies when creating `environment.yaml`. This package is actively used by the author, but is still very much a work inprogress.

Tags: python,devoloper tool,python packaging,

Modified: 2024-02-22

Views: 0

Additive Manufacturing Benchmark 2022 Schema

Data provided by  National Institute of Standards and Technology

This resource is the implementation in XML Schema [1] of a data model that describes the Additive Manufacturing Benchmark 2022 series data. It provides a robust set of metadata for the build processes and their resulting specimens and for measurements made on these in the context of the AM Bench 2022 project.The schema was designed to support typical science questions which users of a database with metadata about the AM Bench results might wish to pose.

Tags: data model,additive manufacturing,build plate,material composition,laser absorptivity,radiography,mechanical testing,

Modified: 2024-02-22

Views: 0

Per- and polyfluoroalkyl substances (PFAS) Interferents List

Data provided by  National Institute of Standards and Technology

A table of known interferences for per- and polyfluoroalkyl substances using mass spectrometry.

Tags: per- and polyfluoroalkyl substances,PFAS,mass spectrometry,analytical chemistry,high-resolution mass spectrometry,HRMS,LC-MS/MS,

Modified: 2024-02-22

Views: 0

AM Bench 2018 Residual Elastic Strain Measurements of 3D Additive Manufacturing Builds of IN625 Artifacts Using Neutron Diffraction and Synchrotron X-ray Diffraction

Data provided by  National Institute of Standards and Technology

The development of large residual elastic strains and stresses during laser powder-bed fusion (LPBF) additive manufacturing is one of the most significant barriers to widespread adoption. Accurate modeling of these strains and stresses is broadly recognized as an effective tool for mitigating these challenges, but rigorous validation data are needed. This data publication includes measurement data from diffraction-based characterizations of residual elastic strains in as-built (not heat treated) artifacts manufactured as part the the 2018 Additive Manufacturing Benchmark Series (AM Bench).

Tags: additive manufacturing,AM Bench,LPBF,Residual Stress,residual strain,neutron diffraction,synchrotron X-ray diffraction,

Modified: 2024-02-22

Views: 0

Effects of as-built surface with varying number of contour passes on high-cycle fatigue behavior of additively manufactured nickel alloy 718

Data provided by  National Institute of Standards and Technology

Abstract (from the manuscript): High cycle fatigue life of laser-powder bed fusion (L-PBF) parts depends on several factors; as-built surfaces, when present, are a particular concern. This work measures as-built L-PBF surfaces with X-ray computed tomography, and uses rotating beam fatigue (RBF) testing to measure high cycle fatigue life. Surfaces with different, but consistent, characteristics are achieved by build in vertical specimens and changing only the number of contour passes.

Tags: additive manufacturing,Laser Powder Bed Fusion,Rotating beam fatigue,Nickel alloy 718,As-built,surface roughness,

Modified: 2024-02-22

Views: 0

Database Infrastructure for Mass Spectrometry - Per- and Polyfluoroalkyl Substances

Data provided by  National Institute of Standards and Technology

Data here contain and describe an open-source structured query language (SQLite) portable database containing high resolution mass spectrometry data (MS1 and MS2) for per- and polyfluorinated alykl substances (PFAS) and associated metadata regarding their measurement techniques, quality assurance metrics, and the samples from which they were produced. These data are stored in a format adhering to the Database Infrastructure for Mass Spectrometry (DIMSpec) project. That project produces and uses databases like this one, providing a complete toolkit for non-targeted analysis.

Tags: per- and polyfluoroalkyl substances,PFAS,database,mass spectrometry,SQLite,emerging contaminants,high resolution mass spectrometry,non-targeted analysis,NTA,HRMS,

Modified: 2024-02-22

Views: 0

Sim-PROCESD: Simulated-Production Resource for Operations and Conditions Evaluation to Support Decision-making

Data provided by  National Institute of Standards and Technology

Sim-PROCESD is a discrete event simulation package written in Python that is designed to model the behavior of discrete manufacturing systems. Specifically, it focuses on asynchronous production lines. It also provides functionality for modeling the degradation and maintenance of machines in these systems. Sim-PROCESD provides class definitions for manufacturing devices/components that can be configured by the user to model various real-world manufacturing systems.

Tags: discrete-event simulation,manufacturing,production,maintenance,python,

Modified: 2024-02-22

Views: 0

Microplastic and nanoplastic chemical characterization by thermal desorption and pyrolysis mass spectrometry with unsupervised machine learning

Data provided by  National Institute of Standards and Technology

This data publication contains the mass spectrometry chemical characterization of microplastic and nanoplastic chemical analysis. The data from this study includes mass spectra of pure, mixed, and weathered microplastics and nanoplastics at high and low fragmentation, extracted ion chronograms, Kendrick mass defect plots, code, and the derived and processed data. The data analysis code (MATLAB 2022a*) used for unsupervised learning of cluster and compositional relationships is also included.

Tags: Microplastic,Nanoplastics,environment,mass spectrometry,GC-MS,Chemical Characterization,machine learning,

Modified: 2024-02-22

Views: 0