A Mechanism Based Modeling Approach to Failure in Fiber Reinforced Composites PDF Download
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Author: Chandra Sekher Yerramalli
Publisher:
ISBN:
Category :
Languages : en
Pages : 582
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Book Description
Author: Chandra Sekher Yerramalli
Publisher:
ISBN:
Category :
Languages : en
Pages : 582
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Book Description
Author: Kevin A. Calzada
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Fiber-reinforced polymer composites have recently emerged as novel materials capable of playing a unique role in industrial applications. The advantage of these materials over traditional metals or polymers comes from the material property enhancements that can be achieved by combining appropriate fiber and matrix materials into the microstructure. While these materials have recently become popularized, many complications arise in the manufacturing process of the two-phase microstructures, specifically in the machining of FRP composites. Due to the complex nature of FRP two-phase microstructures, the fiber failure mechanisms occurring in the machining process are not fully understood. Many experimental and modeling techniques have been implemented to more fully explain the nature of the fiber failure mechanisms in the machining process, but these have fallen short of a complete understanding of the machining complexities. This research seeks to gain a fundamental understanding of the fiber orientation-based fiber failure mechanisms occurring in the micro-machining of FRP composites by employing two unique modeling techniques. In this research, both experimental and finite element-based modeling approaches are undertaken. Fibers oriented in 0, 45, 90, and 135 degrees with respect to the direction of tool motion are investigated and unique failure theories are developed for each of these orientations. The model based on experimental observations is focused on explaining the micro-scale failure mechanisms occurring in the machining process. The finite element machining model developed in this work uses a unique modeling approach, which is capable of explaining the fiber failure mechanisms occurring throughout the chip formation process. After development of the two machining models, the machining responses are compared to a set of machining experiments for validation purposes. ii Fibers orientated in the 45 and 90 degree orientations were found to fail in compressive crushing-dominated failure while fibers oriented in the 135 degree orientation were found to fail in bending below the surface of the cut. In the 0 degree orientation, the fibers were proposed to fail in buckling or bending-dominated failure, depending on the depth of cut, and tool geometry of the process. The micro-scale fiber failure mechanisms were observed to differ significantly from their macro-scale counterparts. The machining responses of the two models were found to agree well with the experimental validation analyses indicating that these models are an accurate representation of the chip formation process.
Author: P. K. Mallick
Publisher: DEStech Publications, Inc
ISBN: 1932078614
Category : Technology & Engineering
Languages : en
Pages : 828
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Book Description
Author: Anastasios P. Vassilopoulos
Publisher: Springer Science & Business Media
ISBN: 1849961816
Category : Technology & Engineering
Languages : en
Pages : 246
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Book Description
Fatigue has long been recognized as a mechanism that can provoke catastrophic material failure in structural applications and researchers are now turning to the development of prediction tools in order to reduce the cost of determining design criteria for any new material. Fatigue of Fiber-reinforced Composites explains these highly scientific subjects in a simple yet thorough way. Fatigue behavior of fiber-reinforced composite materials and structural components is described through the presentation of numerous experimental results. Many examples help the reader to visualize the failure modes of laminated composite materials and structural adhesively bonded joints. Theoretical models, based on these experimental data, are demonstrated and their capacity for fatigue life modeling and prediction is thoroughly assessed. Fatigue of Fiber-reinforced Composites gives the reader the opportunity to learn about methods for modeling the fatigue behavior of fiber-reinforced composites, about statistical analysis of experimental data, and about theories for life prediction under loading patterns that produce multiaxial fatigue stress states. The authors combine these theories to establish a complete design process that is able to predict fatigue life of fiber-reinforced composites under multiaxial, variable amplitude stress states. A classic design methodology is presented for demonstration and theoretical predictions are compared to experimental data from typical material systems used in the wind turbine rotor blade industry. Fatigue of Fiber-reinforced Composites also presents novel computational methods for modeling fatigue behavior of composite materials, such as artificial neural networks and genetic programming, as a promising alternative to the conventional methods. It is an ideal source of information for researchers and graduate students in mechanical engineering, civil engineering and materials science.
Author: Madhukar Chatiri
Publisher:
ISBN: 9783737611022
Category :
Languages : en
Pages : 0
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Book Description
Author: Eng Sci Dept/U
Publisher: CRC Press
ISBN: 1000160173
Category : Technology & Engineering
Languages : en
Pages : 140
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Book Description
This book summarises the development of experimental techniques for determining the impact mechanical properties of fibre reinforced epoxy laminates, and the experimental results obtained for the tensile, compressive and interlaminar shear properties of various epoxy laminates.
Author: Ramesh Talreja
Publisher: Elsevier
ISBN: 0443184887
Category : Technology & Engineering
Languages : en
Pages : 620
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Book Description
Modeling Damage, Fatigue and Failure of Composite Materials, Second Edition provides the latest research in the field of composite materials, an area that has attracted a wealth of research, with significant interest in the areas of damage, fatigue, and failure. The book is fully updated, and is a comprehensive source of physics-based models for the analysis of progressive and critical failure phenomena in composite materials. It focuses on materials modeling while also reviewing treatments for analyzing failure in composite structures. Sections review damage development in composite materials such as generic damage and damage accumulation in textile composites and under multiaxial loading. Part Two focuses on the modeling of failure mechanisms in composite materials, with attention given to fiber/matrix cracking and debonding, compression failure, and delamination fracture. Final sections examine the modeling of damage and materials response in composite materials, including micro-level and multi-scale approaches, the failure analysis of composite materials and joints, and the applications of predictive failure models. - Provides a comprehensive source of physics-based models for the analysis of progressive and critical failure phenomena in composite materials - Assesses failure and life prediction in composite materials - Discusses the applications of predictive failure models such as computational approaches to failure analysis - Covers further developments in computational analyses and experimental techniques, along with new applications in aerospace, automotive, and energy (wind turbine blades) fields - Covers delamination and thermoplastic-based composites
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 942
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Book Description
Author: Sanjay Mavinkere Rangappa
Publisher: Springer Nature
ISBN: 9811606420
Category : Technology & Engineering
Languages : en
Pages : 212
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Book Description
This book presents a unified approach to fracture behavior of natural and synthetic fiber-reinforced polymer composites on the basis of fiber orientation, the addition of fillers, characterization, properties and applications. In addition, the book contains an extensive survey of recent improvements in the research and development of fracture analysis of FRP composites that are used to make higher fracture toughness composites in various applications.The FRP composites are an emerging area in polymer science with many structural applications. The rise in materials failure by fracture has forced scientists and researchers to develop new higher strength materials for obtaining higher fracture toughness. Therefore, further knowledge and insight into the different modes of fracture behavior of FRP composites are critical to expanding the range of their application.
Author: Antonio J.M. Ferreira
Publisher: Società Editrice Esculapio
ISBN: 8874889631
Category : Technology & Engineering
Languages : en
Pages : 204
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Book Description
Composites materials have aroused a great interest over the last few decades. Several applications of fibrous composites, functionally graded materials, laminated composites, nano-structured reinforcements, morphing structures, can be found in many engineering fields, such as aerospace, mechanical, naval and civil engineering. The necessity of lightweight structures, smart and adaptive systems, high-level strength, have led both the academic research and the manufacturing development to a recurring employment of these materials. Many journal papers and technical notes have been published extensively over the last seventy years in international scientific journals of different engineering fields. For this reason, the establishment of this second edition of Mechanics of Composites International Conference has appeared appropriate to continue what has been begun during the first edition occurred in 2014 at Stony Brook University (USA). MECHCOMP wants to be an occasion for many researchers from each part of the globe to meet and discuss about the recent advancements regarding the use of composite structures. As a proof of this event, which has taken place in Porto (Portugal), selected plenary and key-note lectures have been collected in the present book.
