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Frequency Effects On A Stiffness Based Fatigue Failure Criterion In Flawed Composite Specimens
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Book Synopsis Frequency Effects on a Stiffness-Based Fatigue Failure Criterion in Flawed Composite Specimens by : WW. Stinchcomb
Download or read book Frequency Effects on a Stiffness-Based Fatigue Failure Criterion in Flawed Composite Specimens written by WW. Stinchcomb and published by . This book was released on 1977 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important result of our investigations of the fatigue response of composite materials has been the identification and characterization of the effect of frequency of cycled loads (or strain). Frequency has been found to significantly influence the fatigue response of boron/epoxy and boron/aluminum plate specimens with a center hole. A large data base for strain-controlled testing of boron/epoxy and boron/aluminum at different frequencies has been reported earlier. More recently, we have extended the data base to include load-controlled test results for boron/epoxy and boron/aluminum using stiffness change as the primary damage parameter, and allowable stiffness change as a failure criterion. In general, the data show that low-frequency fatigue loading produces more concentrated, local, hole-related damage with corresponding greater specimen stiffness reduction. In contrast, high-frequency loading produces more dispersed damage with more axial micro-structure-related damage and less stiffness reduction. Since these results are true for two widely different materials and different testing conditions, the authors believe that these effects are representative of the mechanics of the phenomenon, and do not represent isolated effects. It appears that frequency effects can be expected in many fiberous composites and that they are large enough to be of significant consequence in many engineering applications.
Book Synopsis Fatigue of Filamentary Composite Materials by : K. L Reifsnider
Download or read book Fatigue of Filamentary Composite Materials written by K. L Reifsnider and published by ASTM International. This book was released on 1977 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Residual Strength Degradation Rate Modeling for Advanced Composite Structures by : K. N. Lauraitis
Download or read book Advanced Residual Strength Degradation Rate Modeling for Advanced Composite Structures written by K. N. Lauraitis and published by . This book was released on 1981 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of the first task of the last two tasks of a three-task program focusing on the study of relationship between damage propagation and residual strength of graphite/epoxy laminates. Specimens of two laminate types, a 32-ply quasi-isotropic and 24-ply 67%-0, containing a centered poorly drilled hole were evaluated in this study. Baseline static tension and compression tests were conducted at high and low strain rates and at elevated temperature.
Book Synopsis Frequency Effects on Flawed-Composite Fatigue Reliability by : KL. Reifsnider
Download or read book Frequency Effects on Flawed-Composite Fatigue Reliability written by KL. Reifsnider and published by . This book was released on 1975 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Variations in the degradation and subsequent fatigue reliability of laminated composite plate specimens with a center hole due to changes in cycle frequency have been identified and investigated. Boron-epoxy and boron-aluminum specimens were examined, principally for stiffness and strength variations. Various combinations of stiffness and strength changes were observed as a function of cycle frequency and specimen material, including a mode wherein stiffness decreased significantly while residual strength increased. A kinetic damage model was developed and combined with a Weibull extreme value expression to attempt to represent the stochastic aspects of the fatigue process. The model shows some promise, especially from the standpoint of representing widely varying fatigue behavior, including the unusual situation of stiffness drop with strength increase. Frequency dependence is included in the model.
Book Synopsis Fatigue in Composites by : Bryan Harris
Download or read book Fatigue in Composites written by Bryan Harris and published by Elsevier. This book was released on 2003-10-31 with total page 765 pages. Available in PDF, EPUB and Kindle. Book excerpt: This major handbook is the first authoritative survey of current knowledge of fatigue behaviour of composites. It deals in detail with a wide range of problems met by designers in the automotive, marine and structural engineering industries. Compiled from the contributions of some of the best-known researchers in the field, it provides an invaluable, practical and encyclopaedic handbook covering recent developments. Comprehensively discusses the problems of fatigue in composites met by designers in the aerospace, marine and structural engineering industries Provides a general introduction on fatigue in composites before reviewing current research on micromechanical aspects Analyses various types of composites with respect to fatigue behaviour and testing and provides in-depth coverage of life-prediction models for constant variable stresses
Book Synopsis Mechanical Testing of Advanced Fibre Composites by : J M Hodgkinson
Download or read book Mechanical Testing of Advanced Fibre Composites written by J M Hodgkinson and published by Woodhead Publishing. This book was released on 2000-10-27 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is concerned with the often very complex problems composite materials can present in the testing of their structural performance.
Book Synopsis ASTM Special Technical Publication by :
Download or read book ASTM Special Technical Publication written by and published by . This book was released on 1977 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Developments in Durability Analysis of Composite Systems by : H. Dardon
Download or read book Recent Developments in Durability Analysis of Composite Systems written by H. Dardon and published by CRC Press. This book was released on 2000-01-01 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: The papers from these proceedings address experimental and analytical methods for the characterization and analysis of modern composite and adhesive systems. They have been produced to provide understanding that can be used to design safe, reliable engineering components.
Book Synopsis SSC. by : United States. Ship Structure Committee
Download or read book SSC. written by United States. Ship Structure Committee and published by . This book was released on 1990 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Composite Materials and Structures by : George C. Sih
Download or read book Advanced Composite Materials and Structures written by George C. Sih and published by VSP. This book was released on 1987-12 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt: Through interviews with people in the jobs we learn what their job involves. What types of food outlets, what qualities are needed in different jobs. Jobs looked at include: cook, chef, waitress, waiter, counter attendant, short order cook, hostess, etc.
Book Synopsis Composite Materials for Implant Applications in the Human Body by : Russel D. Jamison
Download or read book Composite Materials for Implant Applications in the Human Body written by Russel D. Jamison and published by ASTM International. This book was released on 1993 with total page 161 pages. Available in PDF, EPUB and Kindle. Book excerpt: Papers presented at the ASTM symposium on [title] held in San Diego, November 1991. Most of the papers are concerned with orthopedic applications, and many of the test methods relate to the long-term viability of the composite materials and devices. No index. Annotation copyright Book News, Inc. Por
Book Synopsis Mechanics of Nondestructive Testing by : Stinchcomb
Download or read book Mechanics of Nondestructive Testing written by Stinchcomb 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: The synergism of the mechanics of nondestructive testing and the mechanics of materials response has great potential value in an era of rapid development of new materials and new applications for con ventional materials. The two areas are closely related and an advance in one area often leads to an advance in the other. As our understanding of basic principles increases, nondestructive testing is outgrowing the image of "black box techniques" and is rapidly becoming a legitimate technical area of science and engineering. At the present time, however, an understanding of the mechanics of nondestructive testing is lagging behind other advances in the field. The key to further development in the mechanics of nondestructive testing lies in the mechanics of the phenomena or response being investigated - a better understanding of materials response suggests better nondestructive test methods to investigate the response which, in turn, advances our understanding of materials response, and so on. With this approach in mind, the Materials Response Group of the Engineering Science and Mechanics Department at Virginia Polytechnic Institute and State University hosted a Conference on the Mechanics of Nondestructive Testing on September 10 through 12, 1980. Sponsors of the conference were the Army Research Office, the National Science Foundation, and the Engineering Science and Mechanics Department.
Book Synopsis Advances in Composite Materials by : A. R. Bunsell
Download or read book Advances in Composite Materials written by A. R. Bunsell and published by . This book was released on 1980 with total page 946 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis ASTM Standards and Literature References for Composite Materials by :
Download or read book ASTM Standards and Literature References for Composite Materials written by and published by ASTM International. This book was released on 1990 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fatigue/impact Studies in Laminated Composites by : V. Sarma Avva
Download or read book Fatigue/impact Studies in Laminated Composites written by V. Sarma Avva and published by . This book was released on 1983 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The residual strength of the impact-damaged laminates can be predicted using an analytical model. Both the power law and the wearout models appear to be useful in predicting the fatigue life of the composite laminates. However, because of the slope parameter, the wearout model appears to have a slight edge over the power law model, particularly at low fatigue life and higher applied stress. The strength degradation due to cyclic loading in notched laminates was found to be extremely small up to a million cycles. The residual strength of the fatigue-damaged laminates was found to increase (in proportion to the applied maximum stress with R = 0.1) after a million fatigue cycles. Impact loading followed by cyclic loading was found to be more damaging (in reducing the life of the laminate) than the reversed sequence of loading. The magnitude of the minimum projectile velocity causing catastrophic failure in the laminates tested was found as a function of the applied stress and the number of fatigue cycles.
Download or read book Fatigue of Composite Materials written by and published by ASTM International. This book was released on 1973 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fiber-reinforced Composites by : P. K. Mallick
Download or read book Fiber-reinforced Composites written by P. K. Mallick and published by . This book was released on 1988 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:
