Composite Structures

Rani Elhajjar , Peter N. Grant , Cindy Ashforth 지음

Wiley 2018년 09월 25일 출간

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Presents the latest strategies in the development and use of composite materials for large structures and the effects of defects Practical Design and Validation of Composites Structures: Effects of Defects offers an important guide to the use of fiber-reinforced composites and how they affect the durability and safety of engineering structures such as aircraft, ships, bridges, wind turbines as well as sporting equipment. The text draws on the authors’ direct experience in industry and academia to cover the most recent strategies in the development of composite structures and uniquely integrates the assessment of the effects of defects introduced during production. This comprehensive resource builds on an essential introduction to the characteristics of composites and the most common types of defects encountered in production. The authors review the recent manufacturing methods and technologies used for inspecting composite structures and the design issues related to an analysis of their failure and strength incorporating the variability of processing. The text also contains information on the latest regulatory requirements and the relevant standards associated with the testing and design within a robust design philosophy and approach. This important resource: Offers a comprehensive review of the most current regulatory developments in the use of composites for the construction of complex composite structures Presents information on the basic characteristics of composites Includes testing strategies for determining the impacts of production defects Reviews the most current manufacturing methods and inspection technologies in the field Contains methods for statistical analysis and processing of experimental effects of defects test data Written for professional engineers in mechanical engineering, automotive engineering, aerospace engineering, civil engineering, and energy eng

목차

Preface xi 1 Characteristics of Composites 1 1.1 Introduction to Behavior 1 1.2 Introduction to Composite Analysis 3 1.3 Failure and Strength Methodologies 5 1.3.1 Lamina Failure Modes and their Influence upon Catastrophic Failure of Multidirectional Laminates 5 1.3.2 Design Values and Environmental Sensitivity 8 1.3.3 Design Values for Unnotched Multidirectional Laminates 11 1.3.4 Design Values for Notched Multidirectional Laminates 12 1.3.5 Material Variability 14 1.3.6 Strain-Based Failure Methodology 15 1.3.7 Composite Fatigue Behavior 15 References 16 2 DesignMethodology and Regulatory Requirements 19 2.1 Regulatory Requirements 19 2.2 Material and Process Specifications 22 2.3 Design Methodology 23 2.4 Design Values for Notched Multidirectional Laminates 24 2.5 Design Values for Bolted Joints 28 2.5.1 Determination of Fastener Loading 29 2.5.2 Failure Analysis at a Loaded and Unloaded Hole 29 2.6 Design Values for Bonded Joints and Bondlines 33 2.7 Design Values for Sandwich Structure 36 2.7.1 Facesheet Tension Design Values 36 2.7.2 Facesheet Compression Design Values 36 2.7.3 Sandwich Flexural Design Values 37 2.7.4 Out-of-Plane Loading 37 2.8 Statistical Allowables 37 2.9 Simulation of Temperature and Moisture Content 39 References 40 3 Material, Manufacturing, and Service Defects 43 3.1 Introduction 43 3.1.1 Differentiating Cosmetic from Structural Defects 46 3.2 Defects by Stage of Occurrence 46 3.2.1 Material Precure Defects 46 3.2.1.1 Fiber Damage and Defects 50 3.2.2 Manufacturing Defects 51 3.2.3 Service Defects 54 3.3 Defects by Location: Matrix-Dominated Defects 60 3.3.1 Matrix Degradation Due to Porosity and Voids 60 3.3.2 Matrix Degradation Due to A

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저자(글) Rani Elhajjar

RANI ELHAJJAR is Fulbright scholar and tenured associate professor at the College of Engineering and Applied Science at the University of Wisconsin in Milwaukee. His experiences include senior positions in quality, certification, and build reliability engineering at Intel, Boeing and SpaceX. PETER GRANT has over 35 years' experience in Aerospace specializing in analysis and design of composite structures, with a background also in metallic airframe primary structure. Primary positions held have been leads at both British Aerospace and the Boeing company. CINDY ASHFORTH has over 25 years' experience in aircraft certification as both a certification manager and composite specialist. She is the FAA's Senior Technical Specialist for Advanced Composite Materials, where she manages the FAA's Composite Plan and supports composite continued operational safety, certification, and education initiatives.

저자(글) Peter N. Grant

저자(글) Cindy Ashforth