Download or read book Constitutive Response and Deformation Mechanisms in Unidirectional Metal Matrix Composites Under Compression written by GM. Newaz and published by . This book was released on 1996 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was undertaken to evaluate the constitutive response and in-elastic deformation characteristics in titanium-based metal matrix composites (MMC) with two types of ceramic fibers, namely, SCS-6 and Sigma. The titanium matrix was Beta 21S, currently named TIMETAL-21S. Monotonic tests were conducted at room temperature (RT) and between 483 and 815°C. The inelastic deformation in the [0]8 lamina under compression was controlled primarily by matrix plasticity, although some evidence of fiber-matrix debonding was observed. The inelastic deformation mechanisms under compression in [90]8 lamina were primarily due to radial fiber cracking from the core for the SCS-6 fiber and fiber-matrix debonding. However, for the Sigma fiber, radial cracking was absent. The effect of temperature on degradation of mechanical properties such as modulus and yield strength for the composites with two different fibers were compared.
Download or read book Composite Materials written by Ravi B. Deo and published by ASTM International. This book was released on 1996 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Titanium Matrix Composites written by Shankar Mall and published by CRC Press. This book was released on 2020-01-29 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review and summary of advancements related to mechanical behavior and related mechanics issues of titanium matrix composites (TMCs), a class of high-temperature materials useful in the propulsion and airframe components in advanced aerospace systems. After an introduction to TMCs, different authors review and summarise the advancements related to mechanical behavior and related mechanics issues of TMCs.
Download or read book Constitutive Response and Failure Mechanisms of Off axis Metal Matrix Composites written by Ke Zhang and published by . This book was released on 1999 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Compression Response of Composite Structures written by Scott E. Groves and published by ASTM International. This book was released on 1994 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Longitudinal Fatigue Response of a Metal Matrix Composite Under Strain Controlled Mode at Elevated Temperature written by S. Mall and published by . This book was released on 1994 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fatigue characteristics of a unidirectional titanium-based metal matrix composite (MMC) (SCS-6/Ti-15-3) were investigated at elevated temperature (427°C). A hybrid strain controlled loading mode was employed for this purpose. This hybrid control mode did not allow the specimen to experience compressive stress in order to prevent any possible buckling effects. To fully understand the fatigue behavior of the MMC under this control mode, fatigue tests, microscopic evaluation, and micromechanical analysis were performed. Based on this combination of activities, the damage and deformation mechanisms were systematically identified. It was found that the fatigue behavior was initially dominated by creep deformation of the matrix. This was accompanied by plastic deformation in those specimens that were subjected to a maximum strain level of 0.55% or higher. Depending on the maximum strain level, the specimen failure was a result of either fiber fracture or matrix cracking. Using the combined approach involving experiments, microscopy, and analysis, the interrelationships among applied strain levels, fatigue life, damage mechanisms, and macroscopic response were established to characterize the longitudinal fatigue characteristics of the tested MMC.
Download or read book Inelasticity and Micromechanics of Metal Matrix Composites written by George Voyiadjis and published by Elsevier. This book was released on 2017-05-04 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains fifteen papers based on the presentations made at the symposium on "Inelasticity and Micromechanics of Metal Matrix Composites" held at the University of Washington, USA, in mid-1994. The papers represent the most recent work conducted on inelasticity and micromechanics of metal matrix composites. The book is divided into two parts: Part I deals with the study of inelastic deformation in metal matrix composites, while Part II tackles the micromechanical aspects of metal matrix composites. The articles discuss different aspects of these two topics ranging from purely theoretical treatments to extensive experimental investigations. Many of the papers are by prominent researchers working in this area.
Download or read book Transverse Deformation of Unidirectional Fiber reinforced Metal Matrix Composites written by Bing Kang Yen and published by . This book was released on 1991 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inelastic Deformation of Metal Matrix Composites Part 1 Plasticity and Damage Mechanisms written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-08 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: The deformation mechanisms of a Ti 15-3/SCS6 (SiC fiber) metal matrix composite (MMC) were investigated using a combination of mechanical measurements and microstructural analysis. The objectives were to evaluate the contributions of plasticity and damage to the overall inelastic response, and to confirm the mechanisms by rigorous microstructural evaluations. The results of room temperature experiments performed on 0 degree and 90 degree systems primarily are reported in this report. Results of experiments performed on other laminate systems and at high temperatures will be provided in a forthcoming report. Inelastic deformation of the 0 degree MMC (fibers parallel to load direction) was dominated by the plasticity of the matrix. In contrast, inelastic deformations of the 90 degree composite (fibers perpendicular to loading direction) occurred by both damage and plasticity. The predictions of a continuum elastic plastic model were compared with experimental data. The model was adequate for predicting the 0 degree response; however, it was inadequate for predicting the 90 degree response largely because it neglected damage. The importance of validating constitutive models using a combination of mechanical measurements and microstructural analysis is pointed out. The deformation mechanisms, and the likely sequence of events associated with the inelastic deformation of MMCs, are indicated in this paper. Majumdar, B. S. and Newaz, G. M. Unspecified Center...
Download or read book Transverse Fatigue Response of a Metal Matrix Composite Under Strain Controlled Mode at Elevated Temperature written by BP. Sanders and published by . This book was released on 1995 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present paper is a continuation of Part I to investigate the transverse fatigue behavior of a unidirectional titanium-based metal matrix composite (MMC) (SCS-6/Ti-15-3) at elevated temperature. In Part I of this paper, fatigue tests were conducted under the strain-controlled mode, and a systematic microscopic evaluation was undertaken to identify the damage and deformation mechanisms. In this paper (Part II), the fatigue response is modeled using a micromechanical approach where the fiber-matrix interfacial damage is incorporated along with the inelastic behavior of the matrix. The analysis provided additional insight into the transverse fatigue response of the MMC. Combining the results obtained from this micromechanical analysis, and that obtained from the macroscopic response (that is, stress and modulus) and microscopic evaluation in Part I, the transverse fatigue response of the MMC was thoroughly characterized.
Download or read book Proposals for Printing by Subscription the Miscellaneous Works of David Humphreys Ministers Plenipotentiary of the United States of America at the Court of Madrid written by David Humphreys and published by . This book was released on 1804 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Inelastic Deformation of Metal Matrix Composites written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-08 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: The inelastic deformation mechanisms for the SiC (SCS-6)/Ti-15-3 system were studied at 538 C (1000 F) using a combination of mechanical measurements and detailed microstructural examinations. The objectives were to evaluate the contributions of plasticity and damage to the overall MMC response, and to compare the room temperature and elevated temperature deformation behaviors. Four different laminates were studied: (0)8, (90)8, (] or -45)2s, and (0/90)2s, with the primary emphasis on the unidirectional (0)8, and (90)8 systems. The elevated temperature responses were similar to those at room temperature, involving a two-stage elastic-plastic type of response for the (0)8 system, and a characteristic three-stage deformation response for the (90)8 and (+ or -45)2s systems. The primary effects of elevated temperatures included: (1) reduction in the 'yield' and failure strengths; (2) plasticity through diffused slip rather than concentrated planar slip (which occurred at room temperature); and (3) time-dependent deformation. The inelastic deformation mechanism for the (0)8 MMC was dominated by plasticity at both temperatures. For the (90)8 and (+ or -45)2s MMCs, a combination of damage and plasticity contributed to the deformation at both temperatures. Majumdar, B. S. and Newaz, G. M. Unspecified Center..
Download or read book In Phase Thermomechanical Fatigue of Metal Matrix Composites written by BS. Majumdar and published by . This book was released on 1996 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation was undertaken to characterize the deformation response of unidirectional SCS-6/Ti 15-3 metal matrix composite (MMC) lamina subjected to in-phase thermomechanical fatigue (TMF) loading. Evaluations were done in an inert atmosphere to avoid oxidation effects. It was found that the dominant effect on deformation was due to strain ratchetting. Distributed fiber cracking was found to be the primary damage mode in in-phase TMF. The early part of strain ratchetting was identified to be due to the viscoplastic response of the composite as fewer fiber cracks were found to develop at this stage in the MMC specimens. Early fiber cracks were found to occur near molybdenum (Mo) ribbon sites. The fiber-cracking process was determined to be progressive in nature. On qualitative grounds, the concept of fiber ineffective length and the zone of stress intensification at the neighboring fiber at temperature, as in the case of in-phase TMF, was consistent with the observation of progressive fiber cracking in the MMCs.
Download or read book Inelastic Deformation of Metal Matrix Composites Plasticity and Damage Mechanisms Part 2 written by and published by . This book was released on 1992 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book In phase Thermomechanical Fatigue Mechanisms in an Unidirectional SCS 6 Ti 15 3 MMC written by Golam M. Newaz and published by . This book was released on 1995 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book American Society for Composites Eighth Proceedings written by American Society for Composites. Technical Conference and published by CRC Press. This book was released on 1993-10-15 with total page 1168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Compression Failure Mechanisms in Unidirectional Composites written by and published by . This book was released on 1984 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
