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Title: Apparatus for pre-stress-straining rod-type specimens in tension for in-situ passive fracture testing

Abstract

A stress-strain testing apparatus imposes a stress-strain on a specimen while disposed in a controlled environment. Each end of the specimen is fastened to an end cap and a strain gage is attached to the specimen. An adjusting mechanism and a compression element are disposed between the end caps forming a frame for applying forces to the end caps and thereby stress-straining the specimen. The adjusting mechanism may be extended or retracted to increase or decrease the imposed stress-strain on the specimen, and the stress-strain is measured by the strain gage on the specimen while the apparatus is exposed to an environment such as high pressure hydrogen. Strain gages may be placed on the frame to measure stress-strains in the frame that may be caused by the environment.

Inventors:
 [1];  [1];  [2]
  1. Oak Ridge, TN
  2. Knoxville, TN
Issue Date:
Research Org.:
UT-Battelle LLC/ORNL, Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1064638
Patent Number(s):
8230748
Application Number:
12/498,877
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Wang, John Jy-an, Liu, Ken C, and Feng, Zhili. Apparatus for pre-stress-straining rod-type specimens in tension for in-situ passive fracture testing. United States: N. p., 2013. Web.
Wang, John Jy-an, Liu, Ken C, & Feng, Zhili. Apparatus for pre-stress-straining rod-type specimens in tension for in-situ passive fracture testing. United States.
Wang, John Jy-an, Liu, Ken C, and Feng, Zhili. Wed . "Apparatus for pre-stress-straining rod-type specimens in tension for in-situ passive fracture testing". United States. https://www.osti.gov/servlets/purl/1064638.
@article{osti_1064638,
title = {Apparatus for pre-stress-straining rod-type specimens in tension for in-situ passive fracture testing},
author = {Wang, John Jy-an and Liu, Ken C and Feng, Zhili},
abstractNote = {A stress-strain testing apparatus imposes a stress-strain on a specimen while disposed in a controlled environment. Each end of the specimen is fastened to an end cap and a strain gage is attached to the specimen. An adjusting mechanism and a compression element are disposed between the end caps forming a frame for applying forces to the end caps and thereby stress-straining the specimen. The adjusting mechanism may be extended or retracted to increase or decrease the imposed stress-strain on the specimen, and the stress-strain is measured by the strain gage on the specimen while the apparatus is exposed to an environment such as high pressure hydrogen. Strain gages may be placed on the frame to measure stress-strains in the frame that may be caused by the environment.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {7}
}

Works referenced in this record:

Stressing device
patent, February 1995


Test specimen holder
patent, August 1999


High-cycle fatigue test machine
patent, February 2000


Material testing device
patent, November 1980


Apparatuses and methods for measuring ultrasonic velocities in materials
patent, November 1993


Asymmetrical column assembly for high-cycle fatigue test machines
patent, November 2004


Material testing system providing simultaneous force loads
patent, June 1995


Creep testing fixture and method
patent, November 2003


Self-contained constant stress/constant strain test fixture
patent, August 1998