Exper imenta I Stress Ana lysis and Fatigue Tests of Five 24-in. NPS

899 Pages·2008·41.43 MB·English

4456 0042334 7
3 ORNL / TM-9409
- - -
Exper imenta I Stress Ana lysis
and Fatigue Tests of Five
24-in. NPS ANSI
Standard B16.9 Tees
S. E. Moore
J. K. Hayes
R. A. Weed
4
Printed in the United States of America Available from
National Technical Information Service
U S Department of Commerce
5285 Port Royal Road, Springfield, Virginia 22161
NTlS price codes-Printed Copy A06 Microfiche A01
This report was prepared as an account of work sponsored by an agency of the
United StatesGovernment Neither theU nited StatesGovernment nor any agency
thereof, nor any of their employees, makes any warranty express or implied or
assumes any legal liability or responsibility for the accuracy completeness, or
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endorsement, recommendation, or favoring by the United States Government or
any agency thereof The views and opinions of authors expressed herein do not
necessarily state or reflect those of theunited StatesGovernment or any agency
thereof
ORNL/TM-9409
Engineering Technology Division
EXPERIMENTAL STRESS ANALYSIS AND FATIGUE OF
TESTS
FIVE 24-IN. NPS ANSI STANDARD B16.9 TEES
S. E. Moore J. K. Hayes
R. A. Weed
c
8
-
Date Published March 1985
Prepared by the
OAK RIDGE NATIONAL LABORATORY
Oak Ridge, Tennessee 37831
operated by
MARTIN MARIETTA ENERGY INC.
SYSTEMS,
for the
U.S. DEPARTMENT OF ENERGY
under Contract No. DE-AC05-840R21400
445b 7
3 0042314
.
iii
CONTENTS
Page
.
........................................................
FOREWORD V
.................................................
ACKNOWLEDGMENTS vi 1
........................................................
ABSTRACT 1
. ................................................
1 INTRODUCTION 1
. ............................................
2 TEST DESCRIPTION 11
.....................
2.1 Preparation of the Test Assemblies 11
..............................
2.1.1 Strain-gage layout 11
..........................
2.1.2 Test model fabrication 17
..........................................
2.2 Test Facility 21
......................
2.2.1 Mechanical-load test f.r.a.m..e.. ...................... 21
2.2.2 Pressurizing system ......................... 27
2.2.3 Data acquisition system 28
.......................
2.3 Elastic-Response Test Procedures 28
.........................
2.4 Cyclic Fatigue Test Procedures 31
...........................
2.4.1 In-plane moment tests ........................... 32
2.4.2 Cyclic pressure tests 36
. .................
3 DISCUSSION OF ELASTIC-RESPONSE TEST RESULTS 40
..........................
3.1 Reduction of Strain-Gage Data 40
..................
3.1.1 Evaluation of strain-gage data ................... 41
3.1.2 Final screening and reduction 43
........
3.2 Presentation and Discussion of Strain-Gage Data 45
.................
3.3 Representative Data for Pressure Loads 54
....................................
3.4 Flexlhility Factors 55
. .................................
4 DISCUSSION OF FATIGUE TESTS 76
.............................
4.1 Cyclic Moment Test of T-10 77
...........................
4.2 Cyclic Pressure Test of T-11 80
...........................
4.3 Cyclic Pressure Test of T-12 83
...........................
4.4 Cyclic Pressure Test of T-13 86
.............................
.. 4.5 Cyclic Moment Test of T-16 90
. .....................................
5 SUMMARY AND CONCLUSIONS 96
......................................................
REFERENCES 100
iv
APPENDIX I UNION CARBIDE JOB SPECIFICATION JS-115-231
(appears in microfiche form on inside back
cover)
APPENDIX AS-BUILT DIMENSIONS FOR T-10, T-11, T-12, AND
I1
T-13 (appears in microfiche form inside back
on
cover)
APPENDIX I11 LOCATION OF STRAIN GAGES AND LVDT INSTRUMENTATION
(appears in microfiche form on inside back
cover)
APPENDIX IV TEST MODEL FABRICATION AND ASSEMBLY DRAWINGS
(appears in microfiche form on inside back
cover)
APPENDIX V TABULATION OF STRAINS AND STRESSES AFTER
DIAGNOSTIC TESTS OF NOSEY (appears in microfiche
on inside back cover)
form
APPENDIX V I STRESS-INTENSITY ADJUSTMENTS AND TABULATIONS
(appears in microfiche form on inside back
cover )
APPENDIX VI1 STRESS-INTENSITY PLOTS (appears in microfiche
form on inside back cover)
APPENDIX VI11 SUPPLEMENTARY FATIGUE TEST DATA (appears in
microfiche form on inside back cover)
0
V
FOREWORD
The work reported here was performed under the direction of the Oak
Ridge National Laboratory (ORNL) in support of the ORNL Piping Program
for the U.S. Atomic Energy Commission prior to formation of the U.S. De-
partment of Energy. The experimental work was done in the Nuclear Com-
ponents Testing Laboratory, Combustion Engineering, Inc., in Chattanooga,
Tennessee, and the data were analyzed and tabulated at ORNL. The mate-
rial presented in this report was collected and summarized at Mechanics
Research Institute (MRI) under subcontract to ORNL. Publication of the
report was funded by the David W. Taylor Naval Ship Research and Develop-
ment Center (DTNSRDC), Annapolis, Maryland, under contract No.
61533-80-
GO-0016. M. Kaldor, Code 2724, DTNSRDC, is the project engineer.
L.
S. E. Moore, Engineering Technology Division, is the program mana-
ORNL,
ger.

vi1
ACKNOWLEDGMENTS
The study described in this report, spans the course of several
years and is a result of the combined efforts of many people. Without
their uniformly high professionalism, the study could not have reached
its logical conclusion and perhaps could not have been conducted at all.
We offer our sincere gratitude to L. E. Alsager and L. Mershon, both
J.
retired from the U.S. Atomic Energy Commission, who foresaw the need and
were instrumental establishing and nurturing the effort as a funded
in
program; to D. F. Landers, S. W. Taggart, E. C. Rodabaugh, and B. F.
Langer (deceased), who drafted the original test proposal and estab-
lished the cooperative Pressure Vessel Research Committee effort; W. L.
Greenstreet, who initiated and directed the participation of ORNL;
J. E. Smith and S. E. Bolt, who formulated the test specifications and
directed the experiments; B. Roberts, E. Wilson, and D. R. Henley, who
J.
supervised the testing and laboratory work; W. G. Dodge, R. C. Gwaltney,
and J. W. Bryson, who developed the analytical methods and analyzed the
data; F. G. Williams (Taylor Forge, Inc.), D. K. Greenwald (Ladish,
S.
Inc.), and H. H. George (Tube Turns Division of Chemetron Corporation),
who selected the test specimens; N. Robinson (deceased), who inspected
J.
the models; and others, who performed the many tasks required for a suc-
cessful test program.
We also gratefully acknowledge the assistance of the Engineering
Technology Division Word Processing Center and Publications Office for
final preparation of this report.
.