Download or read book Thermomechanical and Bithermal Fatigue Behavior of Cast B1900 Hf and Wrought Haynes 188 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-13 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: High temperature thermomechanical and bithermal fatigue behavior was investigated for two superalloys: cast nickel-base B1900+Hf and wrought cobalt-base Haynes 188. Experimental results were generated to support development of an advanced thermal fatigue life prediction method. Strain controlled thermomechanical and load-controlled, strain-limited, bithermal fatigue tests were used to determine the fatigue crack initiation and cyclic stress-strain response characteristics of superalloys. Bithermal temperatures of 483 and 871 C were used for B1900+Hf, and 316 and 760 C for Haynes 188. Thermomechanical fatigue tests were conducted by using maximum and minimum temperatures corresponding to those for the bithermal experiments. Lives cover the range from about 10 to 3000 cycles to failure. Isothermal fatigue results obtained previously are also discussed. Halford, Gary R. and Verrilli, Michael J. and Kalluri, Sreeramesh and Ritzert, Frank J. and Duckert, Rob E. and Holland, Frederic A. Glenn Research Center RTOP 553-13-00...
Download or read book Thermomechanical and Bithermal Fatigue Behavior of Cast B1900 Hf and Wrought Haynes 188 written by RE. Duckert and published by . This book was released on 1992 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high-temperature, low-cycle, thermal and mechanical fatigue behavior has been investigated for two high-strength, oxidation-resistant, superalloys used in aerospace propulsion systems. Experimental results were generated to support development of an advanced thermal fatigue life prediction method. Strain-controlled thermomechanical and loadcontrolled, strain-limited, bithermal fatigue tests were used to determine the fatigue crack initiation and cyclic stress-strain response characteristics of two superalloys, cast nickel-base B1900 + Hf and wrought cobalt-base Haynes 188.
Download or read book Thermomechanical and Bithermal Fatigue Behavior of Cast B1900 Hf and Wrought Haynes 188 written by Gary R. Halford and published by . This book was released on 1991 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermomechanical and Bithermal Fatigue Behavior of Cast B1900 Hf and Wrought Haynes 188 written by and published by . This book was released on 1991 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermomechanical Fatigue Behavior of Materials written by Huseyin Sehitoglu and published by ASTM International. This book was released on 1993 with total page 259 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Fatigue Lifetime Predictive Techniques written by Michael R. Mitchell and published by ASTM International. This book was released on 1992 with total page 495 pages. Available in PDF, EPUB and Kindle. Book excerpt: Twenty-seven papers from fatigue researchers and practitioners review in detail recent progress in the development of methods to predict fatigue performance of materials and structures and to assess the extent to which these new methods are finding their way into practice. The papers, from the ASTM
Download or read book An Analysis of Isothermal Bithermal and Thermomechanical Fatigue Data of Haynes 188 and B1900 Hf by Energy Considerations written by V. M. Radhakrishnan and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The low cycle fatigue behavior of Haynes 188 and B 1900+Hf under isothermal, bithermal, and thermornechanical malyzed on the basis of the total hysteresis energy expended per cycle. It has been observed fatigue the total hysteresis energy correlates wel! with the fatigue life. In the case of for a given total hysteresis energy per cycle, the fatigue life is equal to or greater than the maximum bithermal temperature. This observation could be used to establish a lower bound In one case of bithermal creep-fatigue and in thermornechanical fatigue, the life is shorter e isothermal life at the maximum temperature. The energy supplied, per se, may not always with the fatigue life in the cases where time-dependent creep and environmental effects are mal creep-fatigue and thermornechanical fatigue, the role of creep and environment and their pplied have to be properly accounted for before the energy term could be used for life prediction.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Analysis of Isothermal Bithermal and Thermomechanical Fatigue Data of Haynes 188 and B1900 hf by Energy Considerations written by National Aeronautics and Space Administration NASA and published by . This book was released on 2018-10-23 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: The low-cycle fatigue behavior of Haynes 188 and B1900+Hf under isothermal, bithermal, and thermomechanical loading conditions has been analyzed on the basis of the total hysteresis energy expended per cycle. It has been observed that in the case of isothermal fatigue the total hysteresis energy correlates well with the fatigue life. In the case of bithermal 'high rate' fatigue, for a given total hysteresis energy per cycle, the fatigue life is equal to or greater than the isothermal fatigue life at the maximum bithermal temperature. This observation could be used to establish a lower bound on life for design purposes. In one case of bithermal creep-fatigue and in thermomechanical fatigue, the life is shorter than that corresponding to the isothermal life at the maximum temperature. The energy supplied, per se, may not always give a systematic correlation with the fatigue life in the cases where time-dependent creep and environmental effects are encountered. Thus, in bithermal creep-fatigue and thermomechanical fatigue, the role of creep and environment and their dependence on the energy supplied have to be properly accounted for before the energy term can be used for life prediction. Radhakrishnan, V. M. and Kalluri, Sreeramesh and Halford, Gary R. Glenn Research Center NAS3-25266; RTOP 505-63-5B...
Download or read book An Analysis of Isothermal Bithermal and Thermomechanical Fatigue Data of Haynes 188 and B1900 Hf by Energy Considerations written by V. M. Radhakrishnan and published by . This book was released on 1993 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Earth to orbit Propulsion Technology 1994 written by Robert J. Richmond and published by . This book was released on 1994 with total page 690 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1990 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Application of a Thermal Fatigue Life Prediction Model to High Temperature Aerospace Alloys B1900 Hf and Haynes 188 written by V. Arya and published by . This book was released on 1992 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents the results of the application of a newly proposed thermomechanical fatigue life prediction method to a series of laboratory TMF results on two high-temperature aerospace engine alloys: cast B1900 + Hf and Haynes 188. The method, referred to as TMF/TS-SRP, is based upon three relatively recent developments: the Total Strain version of the method of Strainrange Partitioning (TS-SRP), the bithermal testing technique for measuring TMF behavior, and advanced viscoplastic constitutive models. The high-temperature data reported in a companion paper are used to evaluate the constants in the model and to provide the TMF verification data to check its accuracy. Predicted lives are in agreement with the experimental lives to within a factor of approximately 2.
Download or read book Annual Report written by Lewis Research Center and published by . This book was released on with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Annual Report 1989 written by Lewis Research Center and published by . This book was released on 1989 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proposed Framework for Thermomechanical Life Modeling of Metal Matrix Composites written by Gary R. Halford and published by . This book was released on 1993 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1992 with total page 1210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
