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Title: Experimental stress analysis and fatigue tests of five 12-in. NPS ANSI Standard B16. 9 tees

Abstract

The tees, designated as ORNL tees T-4, T-6, T-7, T-8, and T-15, were tested under subcontract at Southwest Research Institute, and the data were analyzed at ORNL. Experimental stress analyses were conducted for 13 individual loadings on each tee, including internal pressure and 3 mutually perpendicular force and moment loads on the branch and on the run. Each test model was instrumented with approx. 220, 1/16-in. three-gage, 45/sup 0/ strain rosettes on the body of the tee, and approx. 10, 1/16-in. two-gage, strain rosettes on the pipe extensions. Dial indicators, mounted on a special nonflexible holding frame, were used to measure deflections and rotations of the pipe extensions. Normalized maximum stress intensities for each loading condition on each tee are summarized in the text. Complete sets of strain-gage data, normalized stresses, and displacement measurements for each tee are given on microfiche in the appendixes. Following completion of the strain-gage tests, each tee was tested to failure in a fully reversed displacement-controlled low-cycle fatigue test with an alternating transverse load applied to the branch pipe. The load was directed out of plane for T-4, T-6, T-8, and T-15; and in plane for T-7. A constant internal pressure equal to the nominalmore » design pressure was maintained during the fatigue tests. Failure data from the fatigue tests are summarized in the text.« less

Authors:
; ;
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
5095132
Report Number(s):
ORNL/TM-8965
ON: DE84010280
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions are illegible in microfiche products. Includes 14 sheets of 24x reduction microfiche
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; PIPE FITTINGS; FATIGUE; STRESS ANALYSIS; PIPE JOINTS; STRAIN GAGES; JOINTS; MEASURING INSTRUMENTS; MECHANICAL PROPERTIES; 220200* - Nuclear Reactor Technology- Components & Accessories

Citation Formats

Moore, S. E., Grigory, S. C., and Weed, R. A. Experimental stress analysis and fatigue tests of five 12-in. NPS ANSI Standard B16. 9 tees. United States: N. p., 1984. Web. doi:10.2172/5095132.
Moore, S. E., Grigory, S. C., & Weed, R. A. Experimental stress analysis and fatigue tests of five 12-in. NPS ANSI Standard B16. 9 tees. United States. https://doi.org/10.2172/5095132
Moore, S. E., Grigory, S. C., and Weed, R. A. 1984. "Experimental stress analysis and fatigue tests of five 12-in. NPS ANSI Standard B16. 9 tees". United States. https://doi.org/10.2172/5095132. https://www.osti.gov/servlets/purl/5095132.
@article{osti_5095132,
title = {Experimental stress analysis and fatigue tests of five 12-in. NPS ANSI Standard B16. 9 tees},
author = {Moore, S. E. and Grigory, S. C. and Weed, R. A.},
abstractNote = {The tees, designated as ORNL tees T-4, T-6, T-7, T-8, and T-15, were tested under subcontract at Southwest Research Institute, and the data were analyzed at ORNL. Experimental stress analyses were conducted for 13 individual loadings on each tee, including internal pressure and 3 mutually perpendicular force and moment loads on the branch and on the run. Each test model was instrumented with approx. 220, 1/16-in. three-gage, 45/sup 0/ strain rosettes on the body of the tee, and approx. 10, 1/16-in. two-gage, strain rosettes on the pipe extensions. Dial indicators, mounted on a special nonflexible holding frame, were used to measure deflections and rotations of the pipe extensions. Normalized maximum stress intensities for each loading condition on each tee are summarized in the text. Complete sets of strain-gage data, normalized stresses, and displacement measurements for each tee are given on microfiche in the appendixes. Following completion of the strain-gage tests, each tee was tested to failure in a fully reversed displacement-controlled low-cycle fatigue test with an alternating transverse load applied to the branch pipe. The load was directed out of plane for T-4, T-6, T-8, and T-15; and in plane for T-7. A constant internal pressure equal to the nominal design pressure was maintained during the fatigue tests. Failure data from the fatigue tests are summarized in the text.},
doi = {10.2172/5095132},
url = {https://www.osti.gov/biblio/5095132}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Apr 01 00:00:00 EST 1984},
month = {Sun Apr 01 00:00:00 EST 1984}
}