Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Publications

Search Publications by

Timothy "Dash" Weeks (Fed)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 1 - 20 of 20

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

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

July 19, 2022
Author(s)
Dash Weeks, Nicholas Derimow, Jake Benzing
Based on the collaborative framework established between ASME, NASA, and NIST, quasi-static tensile tests were performed in liquid nitrogen (77 K) and liquid helium (4 K) on tensile specimens extracted from the centers of four welded 316L stainless steel

CURVED-WIDE PLATE TESTING OF X100 GIRTH WELDS

September 29, 2014
Author(s)
Timothy S. Weeks, Joseph D. McColskey, Mark D. Richards, Yong-Yi Wang, Marie A. Quintana
The curved-wide plate (CWP) tests are frequently used for assessing the quality of pipeline girth welds. Despite a large number of CWP tests having been conducted at great expense over many decades, an industry consensus standard remains unavailable

The effect of Acetobacter sp. and a sulfate-reducing bacterial consortium from ethanol fuel environments on fatigue crack propagation in pipeline and storage tank steels

February 1, 2014
Author(s)
Jeffrey W. Sowards, Charles H. Williamson, Timothy S. Weeks, Joseph D. McColskey, John R. Spear
This study evaluated the effects of microbiologically influenced corrosion (MIC) on fatigue crack growth of candidate materials useful in expanding bioethanol usage including: a storage tank steel (ASTM A36) and two pipeline steels (API 5L X52 and X70)

Fatigue Flaw NDE Reference Standard Development - Phase I Feasibility Study

November 1, 2012
Author(s)
Mark D. Richards, Joseph D. McColskey, Dash Weeks
A feasibility study was performed to evaluate a novel method of accurately fatigue cracking steel plates to generate fatigue proposed fatigue crack reference standards. Fatigue cracks were introduced into low carbon steel reference plates in which the

EFFECT OF ETHANOL FUEL AND MICROBIOLOGICALLY INFLUENCED CORROSION ON THE FATIGUE CRACK GROWTH BEHAVIOR OF PIPELINE STEELS

January 25, 2012
Author(s)
Jeffrey W. Sowards, Timothy S. Weeks, Joseph D. McColskey, James R. Fekete, Jain Luke, Charles H. Williamson
Ethanol fuel production and consumption is expected to increase significantly in the near future. Existing pipeline infrastructure could be repurposed to transport ethanol and other biofuels from production sources, such as those located in the Midwest, to

Fatigue Pre-Cracking Curved Wide Plates in Bending

September 27, 2010
Author(s)
Mark D. Richards, Timothy S. Weeks, Joseph D. McColskey, Bo Wang, Yong-Yi Wang
In support of using high strength steels for strain-based design of pipeline, curved wide plate (CWP) tests in tension are being performed on API 5L X100 pipes of 36-inch (916-mm) diameter and 0.75-inch (19-mm) wall thickness. The CWP tests are being used