Data processing: measuring – calibrating – or testing – Measurement system – Statistical measurement
Reexamination Certificate
2011-01-25
2011-01-25
Wachsman, Hal D (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
Statistical measurement
C702S034000, C702S035000, C702S042000, C073S577000
Reexamination Certificate
active
07877229
ABSTRACT:
A method and computer system for executing a program for calculating Load Enhancement Factor that includes the steps of obtaining coupon test data and storing the coupon test data on an information storage device. Analyzing the coupon test data for fit with a Weibull distribution and other analysis criteria and performing either a Modified Joint Weibull analysis or a Weibull Regression analysis or both a Modified Joint Weibull analysis and a Weibull Regression analysis with an accommodation in the analysis for scatter within the coupon testing data.
REFERENCES:
patent: 6671647 (2003-12-01), Ishii et al.
patent: 6763312 (2004-07-01), Judd
patent: 6996493 (2006-02-01), Sikora et al.
patent: 2007/0239368 (2007-10-01), Marrano et al.
Fritz Scholz, “Unified Confidence Bounds for Censored Weibull Data With Covariates,” Mathematics & Computing Technology, Apr. 1, 2002, pp. 1-32, The Boeing Company, Seattle, WA.
Ric Abbott & Ann L. Kolarik, “Strength Substantiation Of All The Composite Airframe (A Materials Data Base Approach),” 34thInternational SAMPE Symposium, May 8-11, 1989, pp. 283-289, Beech Aircraft Corporation, Wichita, Kansas.
J.A. Collins, “High-Cycle Fatigue” (Chapter 7) from “Failure of Materials in Mechanical Design,” 1993, pp. 178-254.
W. Nelson, “Applied Life Data Analysis,” 1982, pp. 36-45.
W.Q. Meeker & L.A. Escobar, “Failure-Time Regression Analysis” (Chapter 17) from “Statistical Methods for Reliability Data,” 1998, pp. 427-447.
G.P. Sendeckyj, “Fitting Models to Composite Materials Fatigue Data,” from “Test Methods and Design Allowables for Fibrous Composites,” 1981, pp. 245-260, ASTM STP 734, C.C. Chamis, Ed., American Society for Testing and Materials.
Ric Abbott, “Design and Certification of the All-Composite Airframe,” SAE Technical Paper Series, Document #892210, Aerospace Technology Conference and Exposition, Sep. 25-28, 1989, Anaheim, CA, whole document.
J.M. Ruiz Barragan, M.A. Morell Fuentes, M.H. Garcia and D.F. Villalba, “Load Enhancement Factor To Be Applied On Fatigue Test For Certification of Composites,” Proceedings of the Twenty-First International Committee on Aeronautical Fatigue Symposium, Jun. 27-29, 2001, Toulouse, France, pp. 313-329.
Wöhler, “Wöhler's Experiments On The Strength Of Metals,” Aug. 23. 1867, excerpt of article.
J. Laméris, “The Use Of Load Enhancement Factors In The Certification Of Composite Aircraft Structures,” Feb. 22, 1990, pp. 1-58, National Aerospace Laboratory, NLR, Amsterdam, The Netherlands.
J. Lawless, “Statistical Models and Methods for Lifetime Data,” 1982, pp. 298-313, Wiley & Son, New York, whole document.
B. Brandecker & R. Hilgert, “A320 Full Scale Structural Testing For Fatigue And Damage Tolerance Certification Of Metallic And Composite Structure,” 1988, pp. 1244-1256.
R. Abbott, “Load Enhancement Factor for Composite Test Spectra (Raytheon Method),” Damage Tolerance Workshop, Jul. 2006, whole document.
H.R. Ashton, “Damage Tolerance And Durability Testing for F/A-18 E/F Composite Materials Structures,” 1996, pp. 1-13, American Institute of Aeronautics and Astronautics, Inc.
B. Harris, N. Gathercole, J.A. Lee, H. Reiter, T. Adam, “Life prediction for constant-stress fatigue in carbon-fibre composites,” Phil. Trans. R. Soc. Lond. A, 1997, pp. 1259-1294, vol. 355, Great Britain.
United States Department of Defense, “Composite Materials Handbook—vol. 3, Polymer Matrix Composites, Materials Usage, Design, And Analysis,” MIL-HDBK-17-3F, Jun. 17, 2002.
Wayne Nelson, “Fitting of Fatigue Curves with Nonconstant Standard Deviation to Data with Runouts,” Journal of Testing and Evaluation, JTEVA, Mar. 1984, pp. 69-77, vol. 12, No. 2.
K.B. Sanger, “Certification Testing Methodology for Composite Structures,” Report No. NADC-86132-60, Jan. 1986, pp. 1-159.
Fritz Scholz, “Weibull and Gumbel Distribution Exact Confidence Bounds,” Research and Technology—Boeing Computer Services, May 13, 1994, pp. 1-49.
O. Gögköl, “A310-300 CFRP FIN—Damage Tolerance Demonstration,” article from High Tech-the Way into the Nineties, 1986, pp. 273-286, Elsevier Science Publishers B.V., Amsterdam, The Netherlands.
R. Wong, R. Abbott, “Durability & Damage Tolerance of Graphite/Epoxy Honeycomb Structures,” Proceedings of the 35thInternational SAMPE Symposium, Anaheim, CA, Apr. 2-5, 1990, pp. 366-380.
Department of Defense—United States of America: “Composite Materials Handbook vol. 3, Polymer Matrix Composite Materials Usage, Design, And Analysis”; Jun. 17, 2002 (http://www-glast.slac.stanford.edu/MechanicalSystems/Analysis/References/MIL/MIL-HDBK-17/HDBK17-3F.pdf); pp. 7-55-7-56.
Todd S. Gross, Steven Lampman, “Micromechanisms of Monotonic and Cyclic Crack Growth,” pp. 42-60, 1996.
R.S. Whitehead, H.P. Kan, R. Cordero, E.S. Saether, “Certification Testing Methodology for Composite Structure, vol. II—Methodology Development,” Oct. 1986, pp. 41-52.
Ratwani et al., Development Of Analytical Techniques For Predicting Compression Fatigue Life And Residual Strength Of Composites, Mar. 1982, 244 pages.
R.S. Whitehead, H.P. Kan. R. Cordero, E.S. Saether, “Certification Testing Methodology for Composite Structure, vol. I—Data Analysis,” Oct. 1986, 54 pages.
Giancaspro James W.
Taam Winson
The Boeing Company
Wachsman Hal D
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