Download or read book The High Temperature Viscoplastic Fatigue Behavior of IN 100 Using the Bodner Partom Flow Law written by Roy E. Wilson (1LT, USAF.) and published by . This book was released on 1983 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The High Temperature Viscoplastic Fatigue Behavior of IN 100 Using the Bodner Partom Flow Law written by R. E. Wilson and published by . This book was released on 1983 with total page 113 pages. Available in PDF, EPUB and Kindle. Book excerpt: Few studies have been made on the stress/strain field or plastic zone size ahead of a crack tip in a high temperature environment under varying load frequencies and stress levels. Fewer studies have incorporated compressive loads or analyzed the effect of a negative R-ratio on the fatigue characteristics of the superalloy IN-100. This study involves extending existing analysis of the stress field and plastic zone ahead of a crack tip in a compact tension specimen, through a larger number of load cycles and examining the nearly unexplored area of compressive loading of a crack in a superalloy. A USAF Materials Laboratory finite element computer program named VISCO was used for this study. The Bodner-Partom viscoplastic constitutive equations for describing the material behavior were utilized. Load spectra included various frequencies with R-ratios of 0.1 and -1.0 (zero mean load). (Author).
Download or read book The High Temperature Viscoplastic Fatigue Behavior of a Compact Tension Specimen Using the Bodner Partom Flow Law written by James E. Keck and published by . This book was released on 1982 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Few studies have been made concerning the effects of low cycle fatigue on the stress/strain field or the plastic zone size ahead of a crack tip in a high temperature environment. Experiments using a superalloy IN-100 at 732 C have shown crack growth during fatigue is slower than the growth rate during long periods of sustained load. These investigations also show that crack growth rates during hold periods after fatigue cycling are dependent on the cycle frequency. This study focuses on fatigue as it effects the changing stress field and plastic zone ahead of a crack tip. Finite element modeling was accomplished using an in-house computer program named VISCO, which was modified to incorporate load cycling. A compact tension specimen geometry was modeled using the Bodner-Partom viscoplastic constitutive equations to describe the material behavior. Results show that material behavior near a crack tip closely correlates to uniaxial material response data under stress controlled loading. During cyclic loading, the greatest plastic deformation near the crack tip occurs in the first load cycle. Computations show that IN-100 displays significant amounts of time dependent inelastic behavior.
Download or read book The High Temperature Viscoplastic Fatigue Behavior of a Compact Tension Specimen Using the Bodner Partom Flow Law written by James E. Keck (MAJ, USAF.) and published by . This book was released on 1982 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fracture Mechanics written by John H. Underwood and published by ASTM International. This book was released on 1986 with total page 837 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1 957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 29 (thesis year 1984) a total of 12,637 theses titles from 23 Canadian and 202 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 29 reports theses submitted in 1984, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Download or read book Air University Abstracts of Research Reports written by and published by . This book was released on 1984 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nonlinear Constitutive Relations for High Temperature Application 1984 written by and published by . This book was released on 1985 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fracture Mechanics written by and published by . This book was released on 1986 with total page 856 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 A Collection of Technical Papers written by and published by . This book was released on 1984 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Download or read book Government Reports Annual Index written by and published by . This book was released on 1984 with total page 1138 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Download or read book Technical Abstract Bulletin written by and published by . This book was released on 1982 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index Keyword A L written by and published by . This book was released on 1984 with total page 1092 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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