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Fatigue Life Behavior And Matrix Fatigue Crack Spacing In Unnotched Scs 6 Timetal 21s Metal Matrix Composites
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781722231675 Total Pages :30 pages Book Rating :4.2/5 (316 download)
Book Synopsis Fatigue-Life Behavior and Matrix Fatigue Crack Spacing in Unnotched Scs-6/Timetal 21s Metal Matrix Composites by : National Aeronautics and Space Administration (NASA)
Download or read book Fatigue-Life Behavior and Matrix Fatigue Crack Spacing in Unnotched Scs-6/Timetal 21s Metal Matrix Composites written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-03 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue tests of the SCS-6/Timetal 21S composite system were performed to characterize the fatigue behavior for unnotched conditions. The stress-life behavior of the unnotched (9/90)2s laminates was investigated for stress ratios of R = 0.1 and R = 0.3. The occurrence of matrix cracking was also examined in these specimens. This revealed multiple matrix crack initiation sites throughout the composite, as well as evenly spaced surface cracks along the length of the specimens. No difference in fatigue lives were observed for stress ratios of R = 0.1 and R = 0.3 when compared on a stress range basis. The unnotched SCS-6/Timetal 21S composites had shorter fatigue lives than the SCS-6/Ti-15-3 composites, however the neat Timetal 21S matrix material had a longer fatigue life than the neat Ti-15-3. Ward, G. T. and Herrmann, D. J. and Hillberry, B. M. Unspecified Center NAG1-1316; RTOP 763-23-45-85...
Book Synopsis Fatigue-life Behavior and Matrix Fatigue Crack Spacing in Unnotched SCS-6/Timetal 21S Metal Matrix Composites by :
Download or read book Fatigue-life Behavior and Matrix Fatigue Crack Spacing in Unnotched SCS-6/Timetal 21S Metal Matrix Composites written by and published by . This book was released on 1993 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fatigue-Life Behavior and Matrix Fatigue Crack Spacing in Unnotched SCS-6/Timetal®21S Metal Matrix Composites by : GT. Ward
Download or read book Fatigue-Life Behavior and Matrix Fatigue Crack Spacing in Unnotched SCS-6/Timetal®21S Metal Matrix Composites written by GT. Ward and published by . This book was released on 1995 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue tests of the SCS-6/Timetal®21S composite system were performed to characterize the fatigue behavior for unnotched specimens. The stress-life behavior of the unnotched [0/90]2S laminates was investigated for stress ratios of R = 0.1 and R = 0.3. No difference in fatigue lives was observed when comparing the two stress ratios on a stress-range basis. The unnotched SCS-6/Timetal 21S composites had shorter fatigue lives than those reported in the literature for the SCS-6/Ti-15-3 composites; however, the neat Timetal 21S matrix material had a longer fatigue life than those reported for the neat Ti-15-3. Multiple matrix crack initiation sites were observed throughout the composite, as well as evenly spaced transverse fatigue cracks along the length of the specimens. The spacing between fatigue cracks was investigated, as were the effects of surface cracking on composite stiffness.
Book Synopsis Life Prediction Methodology for Titanium Matrix Composites by : W. Steven Johnson
Download or read book Life Prediction Methodology for Titanium Matrix Composites written by W. Steven Johnson and published by ASTM International. This book was released on 1996 with total page 625 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the March 1994 symposium are organized into five sections that progress from basic understanding of mechanical damage mechanisms and environmental effects to life prediction methodology. Five papers discuss the interplay between interfacial strength, residual thermal stresses, an
Book Synopsis Isothermal Damage and Fatigue Behavior of SCS-6/Timetal 21S (0/90)s Composite at 650 C by :
Download or read book Isothermal Damage and Fatigue Behavior of SCS-6/Timetal 21S (0/90)s Composite at 650 C written by and published by . This book was released on 1994 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterization of Unnotched SCS-6/Ti-15-3 Metal Matrix Composites at 650 C by :
Download or read book Characterization of Unnotched SCS-6/Ti-15-3 Metal Matrix Composites at 650 C written by and published by . This book was released on 1990 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Thermomechanical fatigue behavior of materials by : Michael J. Verrilli
Download or read book Thermomechanical fatigue behavior of materials written by Michael J. Verrilli and published by ASTM International. This book was released on 1996 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Characterization of Unnotched SCS-6/Ti-15-3 Metal Matrix Composites at 650°C by : WS. Johnson
Download or read book Characterization of Unnotched SCS-6/Ti-15-3 Metal Matrix Composites at 650°C written by WS. Johnson and published by . This book was released on 1992 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: TI-15-3 reinforced with SCS-6 silicon carbide fibers, in five different lay-ups, was tested at 650°C to determine monotonic and fatigue strengths, basic mechanical properties, and damage initiation and progression. The elevated temperature results were compared to those obtained at room temperature. Analytical predictions were made of the monotonic stress-strain response as well as cyclic stress-strain hysteresis. The fiber reinforcement was found to increase significantly the static and fatigue strengths of the laminates over those of the matrix material at elevated temperature; the increase was insignificant at room temperature. Initial damage, in either the fibers or the matrix, was partitioned as a function of the life and applied strain range in the constituents. High strains and short lives resulted in multiple fiber failure with no signs of matrix fatigue cracking. Low strains and long lives resulted in extensive matrix cracking and no fiber breaks away from the fracture surface. At 650°C, the matrix was too weak to cause fiber-matrix interface failure before matrix yielding. Laminate fatigue lives were hypothesized to be a function of the 0° fiber stress. More scatter was found in the 0° fiber stress versus high temperature fatigue life data than in the room temperature data. An initial unloading modulus that was greater than the initial loading modulus was observed in the elevated temperature fatigue tests.
Download or read book Metals Abstracts written by and published by . This book was released on 1994 with total page 1440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1996 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fatigue Crack Growth Study of SCS6/Ti-15-3 Composite by :
Download or read book Fatigue Crack Growth Study of SCS6/Ti-15-3 Composite written by and published by . This book was released on 1989 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Prediction of Matrix Fatigue Crack Initiation in Notched SCS-6/Ti-15-3 Metal Matrix Composites by :
Download or read book Prediction of Matrix Fatigue Crack Initiation in Notched SCS-6/Ti-15-3 Metal Matrix Composites written by and published by . This book was released on 1991 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalogue, United States Public Documents by :
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1994 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Damage and Failure Behavior of SiC SCS-6/Timetal 21S Metal Matrix Composite by :
Download or read book Damage and Failure Behavior of SiC SCS-6/Timetal 21S Metal Matrix Composite written by and published by . This book was released on 1996 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: SRI International is performing a program of research to (1) determine the microstructural mechanisms underlying failure of metal matrix composites (MMCs), (2) measure the deformation and failure properties of MMCs under combined loading conditions, and (3) develop computational models for deformation and failure. In addition, we are helping the Wright Laboratory determine the microfailure sequence in a brittle matrix composite (BMC). This report describes the results obtained under Phase 1 of the research effort. The work will be completed in Phase 2 and reported in detail in a more comprehensive technical report. We quantified and analyzed the topography of fracture surfaces to reconstruct the fracture process and delineate the sequence of microfailure events occurring in SCS-6/Timetal 21S MMC under tensile load at room and elevated temperatures and under thermomechanical fatigue conditions. We performed a similar analysis on a SiC-fiber-reinforced borosilicate glass BMC tested at elevated temperature at the Wright Laboratory.
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fatigue Life of SCS-6/Timetal® 834 at Room Temperature and 600°C by : W. Zeng
Download or read book Fatigue Life of SCS-6/Timetal® 834 at Room Temperature and 600°C written by W. Zeng and published by . This book was released on 2003 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue of the titanium matrix composite (TMC) SCS6/Timetal 834 has been investigated at room temperature and 600°C. Whereas the room temperature behavior is mainly influenced by fatigue crack formation and growth, this is not the case for fatigue at 600°C. The runout specimens did not show any crack, whereas runout specimens tested at room temperature showed multiple transverse cracks with a characteristic distance. The main reason for the lack of cracks was found to be the result of stress relaxation of the matrix. This effect is strong due to the fact that the first 105 cycle are performed at a low frequency (0.25 Hz).
