Download or read book Fatigue and Residual Strength Characteristics of Fiber Metal Laminates Subjected to Incidental Damage written by R. Fredell and published by . This book was released on 1992 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue and Fracture of Fibre Metal Laminates written by René Alderliesten and published by Springer. This book was released on 2017-04-19 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contributes to the field of hybrid technology, describing the current state of knowledge concerning the hybrid material concept of laminated metallic and composite sheets for primary aeronautical structural applications. It is the only book to date on fatigue and fracture of fibre metal laminates (FMLs). The first section of the book provides a general background of the FML technology, highlighting the major FML types developed and studied over the past decades in conjunction with an overview of industrial developments based on filed patents. In turn, the second section discusses the mechanical response to quasi-static loading, together with the fracture phenomena during quasi-static and cyclic loading. To consider the durability aspects related to strength justification and certification of primary aircraft structures, the third section discusses thermal aspects related to FMLs and their mechanical response to various environmental and acoustic conditions.
Download or read book Fatigue Damage strength Relationships in Composite Laminates Volume 1 written by Kenneth L. Reifsnider and published by . This book was released on 1983 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is Vol. I of a 2-part final report on the activities which were conducted under Contract No. F33615-81-3225. The general objective of this program was to investigate the precise nature of the damage events caused by cyclic (fatigue) loading of composite laminates that are directly related to fracture of those laminates, to develop a conceptual understanding of how those damage events reduce the residual strength of the laminates, and to determine how the collective damage condition following long-term cyclic loading precipitates the final fracture event. The program was conducted in four phases: (1) the development of fatigue damage during long-term cyclic loading was investigated in such a way that the damage events which occur quite late in the fatigue life of the material, just prior to fracture, were identified and characterized; (2) the special contribution and nature of fiber fracture was investigated; (3) the nature of the collective damage condition which precipitates the fracture event under long-term fatigue loading was investigated; (4) a philosophy of fracture in composite laminates following severe damage development due to cyclic loading was developed. A wide variety of destructive and nondestructive experimental evaluation schemes were used in the program, and several analytical efforts were conducted to support the experimental activities.
Download or read book Fatigue 93 written by J. P. Bailon and published by . This book was released on 1993 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Annual Index written by and published by . This book was released on 1994 with total page 1108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue of Notched Fiber Composite Laminates Part 2 Analytical and Experimental Evaluation written by and published by . This book was released on 1976 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1994 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aeronautical Enginnering A Cumulative Index to a Continuing Bibliography supplement 312 written by and published by . This book was released on 1994 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advanced Materials written by Vince Bailey and published by . This book was released on 1993 with total page 1120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Residual Strength of Composite Laminates Subjected to Tensile Compressive Fatigue Loading written by A. Rotem and published by . This book was released on 1990 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: The residual strengths of graphite epoxy (T300/934) laminates, in tension and in compression, were measured after exposure to tension-compression fatigue loading (R = -1). No direct correlation was found between remaining residual strengths and percentage of average fatigue life. However, a correlation scheme, based on a cumulative damage model and a stiffness change of the material, was developed for the individual specimen under test. This scheme predicts that strength will begin to degrade at about 60 to 80% of the fatigue life of the specimen, depending on the laminate structure. By monitoring stiffness change during fatigue, it was possible to predict the fatigue life of each individual specimen, and to terminate fatigue loading at some preset value of stiffness degradation before failure. It was found that only the strength of the final failure mode was degraded (that is, tension or compression), while the strength in the opposite direction did not change until almost the final failure. It was concluded that monitoring stiffness of a laminated structure will permit more effective use of the laminate and avoid premature failure.
Download or read book Fatigue of Notched Fiber Composite Laminates written by SV. Kulkarni and published by . This book was released on 1977 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper describes the analytical/experimental correlation study performed to develop an understanding of the behavior of notched boron/epoxy laminates subjected to tension/tension fatigue loading. The static failure analysis of notched laminates used herein treats the following modes of failure: axial cracking in the load direction, and transverse cracking across the specimen. The "mechanistic wearout" fatigue analysis uses this static failure model and embodies the concept that material properties in the notch region are continually changing with cyclic loading and that, if these properties are known at a given time, they could be used in the static failure analysis to compute residual strength and preferred mode of crack propagation. In order to verify the fatigue model, an experimental program of limited scope was undertaken to obtain boron/epoxy lamina static and fatigue data (longitudinal and transverse tension and in-plane shear), unnotched [02/±45]s laminate static data, and notched [02/±45]s laminate static and fatigue data. Laminate fatigue behavior was determined from lamina fatigue data, and analysis predictions were compared with the notched-laminate fatigue data. The specific phenomena of interest are the initiation of fatigue damage and its growth as a function of load cycles, fatigue life and mode of failure, and the residual strength after a predetermined number of cycles and the corresponding mode of failure. Certain predicted phenomena such as the increase in residual strength after fatigue loading and both axial and transverse damage growth were observed experimentally. However, correlation of theory and experiment was hampered by the following factors: delamination of the 0-deg surface layers in the region of the longitudinal projection of the notch diameter, lack of statistically significant data base for lamina fatigue properties in general, and absence of lamina axial compression fatigue data in particular. The principal deficiency appears to be the lack of a capability to predict growth of delaminations. Therefore, the interplay of stacking sequence and various failure modes needs to be investigated analytically and experimentally in detail.
Download or read book Proceedings of the 1992 USAF Structural Integrity Program Conference Held in San Antonio Texas on December 1 3 1992 written by Thomas D. Cooper and published by . This book was released on 1993 with total page 894 pages. Available in PDF, EPUB and Kindle. Book excerpt: Partial contents include the following: (1) New developments in fatigue management of F-16 aircraft; (2) Quantifying accuracy of fatigue life prediction methodology; (3) Naval aircraft approach and landing data acquisition system; (4) A diagnostic reasoning technology demonstrator for gas turbine engines; (5) Cost effective risk management in design and flight qualification; (6) a preliminary study of fatigue durability in terms of crack growth; (7) A fatigue analysis of panels with multiple site damage; (8) Probabilistic rotor design system; (9) Assessment of helicopter component statistical reliability computations; (10) The effects of negative R ratio on fatigue crack growth; (11) Effect of microporosity on fatigue durability of thick 7050 aluminum plate; (12) Fatigue and residual strength characteristics of fiber metal laminates subjected to incidental damage; (13) The role of nondestructive inspection in an F-15E wing spar structural integrity program; (14) Ultrasonic imaging system for F-4 lower torque box skin; (15) Acoustic emission monitoring of the CF116 (CF5) full-scale durability and damage tolerance test; (16) Vibratory characterization of integrally bladed rotors utilizing surrogate blade models; (17) F-4 lower wing skin integral stiffener failure analysis; (18) New aircraft lower wing skin trade study; (19) C-141 composite material repairs to metallic airframe components; and (20) Repair of F-16 static discharge probes.
Download or read book Post impact Fatigue Behavior of Composite Laminates written by Alkis Paipetis and published by . This book was released on 2010 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fatigue of Composite Materials written by K.L. Reifsnider and published by Elsevier. This book was released on 2012-12-02 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides the first comprehensive review of its kind on the long-term behaviour of composite materials and structures subjected to time variable mechanical, thermal, and chemical influences, a subject of critical importance to the design, development, and certification of high performance engineering structures. Specific topics examined include damage, damage characterization, and damage mechanics; fatigue testing and evaluation; fatigue behaviour of short and long fibre reinforced polymer and metal matrix materials; viscoelastic and moisture effects; delamination; statistical considerations; the modeling of cumulative damage development; and life prediction. The volume provides an extensive presentation of data, discussions, and comparisons on the behaviour of the major types of material systems in current use, as well as extensive analysis and modeling (including the first presentation of work not found elsewhere). The book will be of special interest to engineers concerned with reliability, maintainability, safety, certification, and damage tolerance; to materials developers concerned with making materials for long-term service, especially under severe loads and environments, and to lecturers, students, and researchers involved in material system design, performance, solid mechanics, fatigue, durability, and composite materials. The scope of the work extends from entry level material to the frontiers of the subject.
Download or read book Impact Behaviour of Fibre Reinforced Composite Materials and Structures written by S. R. Reid and published by Elsevier. This book was released on 2000-10-12 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study covers impact response, damage tolerance and failure of fibre-reinforced composite materials and structures. Materials development, analysis and prediction of structural behaviour and cost-effective design all have a bearing on the impact response of composites and this book brings together for the first time the most comprehensive and up-to-date research work from leading international experts. State of the art analysis of impact response, damage tolerance and failure of FRC materials Distinguished contributors provide expert analysis of the most recent materials and structures Valuable tool for R&D engineers, materials scientists and designers
Download or read book Fibre Metal Laminates written by Ad Vlot and published by Springer Science & Business Media. This book was released on 2001-09-30 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt: Like New, No Highlights,No Markup,all pages are intact.
