Mechanical properties

News and Updates

A large hydraulic press machine with vertical columns stands on a platform behind tanks labeled "Nitrogen."

Spotlight: Putting Steel to the Test Under Cryogenic Temperatures

May 24, 2023

How NIST researchers measure the fatigue of high-performance steels used for transporting and storing cryogenic liquids.

Jake Benzing wears safety glasses as he bends over to adjust piece of scientific equipment in the lab.

Spotlight: Searching for 3D-Printed Titanium’s Breaking Point With Jake Benzing

May 24, 2023

We have researchers who break stuff so that others can live their lives without stuff breaking down prematurely.

NIST’s NanoFab Reopens its Doors to Universities, Industry, and Research Institutions

April 3, 2023

In the Lilliputian world of nanofabrication, where billions of microscopic circuit elements are sculpted or imprinted on a fingernail-sized silicon chip

Projects and Programs

3D Strain Mapping: Transmission Bragg Edge Strain Tensor Tomography (TBESTT)

Ongoing

Imagine an MRI or CT technique that can peer inside structural materials (e.g., steels) and visualize the strain experienced by structures as they support loads

Ab initio theoretical modeling for predicting structure and properties in advanced materials

Ongoing

We develop first-principles-based methods for prediction of atomic arrangements and properties in advanced materials and develop tools for the prediction and

Materials and Systems for Protection Against Penetrating and Blunt Force Phenomena

Ongoing

Penetrating and blunt force phenomena can cause serious trauma. The STG performs research to advance materials science and metrology for materials and equipment

Qualification for AM Feedstocks, Machines and Processes

Completed

Machines and processes used to produce critical components for defense, aerospace, and medical applications must first be formally qualified. While

Publications

A Study of Ductile Crack Corrections for Elastic-Plastic Fracture Toughness Tests

October 14, 2023

Author(s)

Enrico Lucon

This paper critically examines existing ductile crack growth (DCG) corrections for J integral values calculated with the multi-specimen and elastic compliance

Unintended consequences: Assessing thermo-mechanical changes in vinyl nitrile foam due to micro-computed X-ray tomographic imaging

October 5, 2023

Author(s)

Alexander Landauer, Zois Tsinas, Orion Kafka, Newell Moser, Jack Leigh Glover, Aaron M. Forster

Micro-computed X-ray tomography (μCT) is a volumetric imaging tool used to quantify the internal structure of materials. μCT imaging with mechanical testing (in

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

August 5, 2023

Author(s)

Orion Kafka, Jake Benzing, Nicholas Derimow, Philipp Schumacher, Lucas Koepke, Chad Beamer, Donald Godfrey, Nik Hrabe

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

Effect of austenite fraction and stability on strength-hardening-ductility in additively manufactured 17-4 PH stainless steel containing nitrogen

June 30, 2023

Author(s)

Saadi Habib, Steven P. Mates, Fan Zhang, Mark R. Stoudt, James Zuback, Olaf Borkiewicz

Additively-manufactured (AM) 17-4 precipitation-hardening (PH) martensitic stainless steel (SS) built from nitrogen-atomized powder often retains a large volume

Tools and Instruments

Hysitron PI-85 Picoindentor

This in-situ indentation system can be integrated into electron microscopes as well as being run in other unusual setups. With a load capacity of 150 mN, this

Rubber Process Analyzer

The TA Instruments RPA elite rubber process analyzer (RPA) is a strain-controlled rotational shear rheometer for the characterization of polymers, composites

4 m Drop Tower with Instrumented Impactor

The Security Technologies Group has a 4-m-tall drop tower that can be configured for a wide variety of impact and impact-related testing. This drop tower is

Mechanical properties

News and Updates

Spotlight: Putting Steel to the Test Under Cryogenic Temperatures

Spotlight: Searching for 3D-Printed Titanium’s Breaking Point With Jake Benzing

NIST’s NanoFab Reopens its Doors to Universities, Industry, and Research Institutions

Projects and Programs

3D Strain Mapping: Transmission Bragg Edge Strain Tensor Tomography (TBESTT)

Ab initio theoretical modeling for predicting structure and properties in advanced materials

Materials and Systems for Protection Against Penetrating and Blunt Force Phenomena

Qualification for AM Feedstocks, Machines and Processes

Publications

A Study of Ductile Crack Corrections for Elastic-Plastic Fracture Toughness Tests

Unintended consequences: Assessing thermo-mechanical changes in vinyl nitrile foam due to micro-computed X-ray tomographic imaging

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

Effect of austenite fraction and stability on strength-hardening-ductility in additively manufactured 17-4 PH stainless steel containing nitrogen

Tools and Instruments

Hysitron PI-85 Picoindentor

Rubber Process Analyzer

4 m Drop Tower with Instrumented Impactor

Awards

William Luecke Recognized with ASTM Award of Merit

Mark Stoudt Named ASM Fellow

MML Project Leader Enrico Lucon Receives ASTM International Award of Merit

MML Group Leader Frank DelRio Named ASME Fellow