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Search Publications by: Enrico Lucon (Fed)

Displaying 26 - 50 of 186

Assessment of Macroscopically Inhomogeneous Fracture Toughness Data Sets Using the Simplified and Multimodal Master Curve Methods

March 13, 2023

Author(s)

Enrico Lucon

A number of large, historical fracture toughness data sets have been analyzed according to the provisions of ASTM E1921-22a, in order to compare two Master Curve methods for assessing potential macroscopic material inhomogeneity: simplified method (based

Improved Resistance to Hydrogen-Induced Cracking by Tempering of Intercritically Rolled Accelerated Cooled X65 Steel

March 1, 2023

Author(s)

Mary Kathleen O'Brien, Enrico Lucon, Donald Williamson, Kip Findley

Hydrogen-induced cracking (HIC) occurs in pipeline steels used in oil and gas applications that are rich in hydrogen sulfide gas also known as sour-service environments. In this study, an experimental X65 steel was produced by intercritically finish

Ductility-driven ranking system for API-grade steels in high pressure gaseous hydrogen transmission pipelines

December 19, 2022

Author(s)

Douglas Stalheim, Andrew Slifka, Matthew Connolly, Enrico Lucon, Aaron Litschewski, Pello Uranga

There is strong economic and environmental interest in hydrogen as an energy source to contribute to combatting climate change. Hydrogen diffusion into the steel with assistance through various mechanisms of corrosion and pressure will degrade the

Charpy Interlaboratory Comparison Between NIST and Anand Testing Machine Services

December 12, 2022

Author(s)

Enrico Lucon, Raymond L. Santoyo

Results are reported of an Interlaboratory Comparison between NIST (National Institute of Standards and Technology, Boulder, Colorado, USA) and ATMS (Anand Technical Machine Services, Kabnur, India). The study consisted in testing in both locations

Fracture Toughness Tests at 77 K and 4 K on 316L Stainless Steel Welded Plates

July 29, 2022

Author(s)

Jake Benzing, Nicholas Derimow, Enrico Lucon, Dash Weeks

In the framework of a collaborative project between ASME, NASA, and NIST, quasi-static fracture toughness tests have been performed at liquid nitrogen temperature (77 K, or -196 °C) and liquid helium temperature (4 K, or -269 °C) on weld specimens

Analyzing the NIST Charpy Program Database: Influence of Impact Hammer Type (C vs. U) on Test Results

July 20, 2022

Author(s)

Enrico Lucon, Raymond L. Santoyo

The NIST Charpy Machine Verification Program supplies ASTM E23 certified Charpy reference specimens to customers all over the world since 1989, when the program was transferred from the US Army at Watertown Arsenal, Massachusetts. Starting in 1993

Spreadsheet-Based Software for the Analysis of Homogeneous and Inhomogeneous Data Sets in Accordance with ASTM E1921-21

June 14, 2022

Author(s)

Enrico Lucon

NIST has developed a user-friendly spreadsheet-based software package for the Master Curve analysis of fracture toughness tests performed in the ductile-to-brittle transition region and the determination of the reference temperature To, in accordance with

Influence of Side-Groove Depth and Heat Treatment on Super-High Energy Charpy Specimens of 9310 Steel

June 8, 2022

Author(s)

Enrico Lucon

NIST provides certified reference Charpy specimens to companies and laboratories around the world for the indirect verification of impact machines in accordance with ASTM E23. Specimens are available at three energy levels, low (15 J at 40 C), high (100

Interlaboratory Comparison Study on Crack Size Measurements Performed with Two Different Methods

May 5, 2022

Author(s)

Enrico Lucon

An interlaboratory study (ILS), involving 15 laboratories from North America, Europe, and Japan, was conducted to validate crack size measurements on various types of fracture toughness specimens by means of two commonly used methodologies: the 9-Point

Spreadsheet-Based Software for the Analysis of Unloading Compliance Fracture Toughness Tests in Accordance with ASTM E1820

March 25, 2022

Author(s)

Enrico Lucon

NIST has developed a user-friendly spreadsheet-based software for the analysis of elastic-plastic fracture toughness tests conducted according to ASTM E1820-20b on either Compact Tension or Single-Edge Bend specimens using the Unloading/Elastic Compliance

KEY COMPARISON - Instrumented Charpy tests on low- and high-energy specimens

February 18, 2022

Author(s)

Enrico Lucon, Renato Reis Machado

This report describes a CIPM Key Comparison through the SIM/MWG-7 organization, concerning instrumented impact testing of low-energy (20 J) and high-energy (100 J) Charpy V-notch specimens. In this Comparison, various instrumented and non-instrumented data

Charpy Key Comparison SIM.M.F-S3 - Instrumented Charpy Tests on Low- and High-Energy Specimens - Final Report

February 1, 2022

Author(s)

Enrico Lucon, Renato Reis Machado

Instrumented Charpy Tests at 77 K on 316L Stainless Steel Welded Plates

December 20, 2021

Author(s)

Enrico Lucon, Jake Benzing

In the framework of a collaborative project between ASME, NASA, and NIST, instrumented Charpy tests have been performed at liquid nitrogen temperature (77 K, or 196 °C) on specimens extracted from the center of four 316L welded stainless steel plates, each