Bonded Joints and Repairs to Composite Airframe Structures [[electronic resource]]

• Record Nr.: UNINA9910797617203321
• Autore: Wang Chun Hui
• Pubbl/distr/stampa: Saint Louis, : Elsevier Science, 2015; London : , : Academic Press is an imprint of Elsevier, , [2016]; ©2016
• ISBN: 0-12-417172-9; 0-12-417153-2
• Descrizione fisica: 1 online resource (0 p.)
• Altri autori (Persone): DuongCong N
• Disciplina: 620.118
• Soggetti: Fibrous composites; Airframes - Design and construction
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Preface ; Part 1. Analysis and design. Chapter 1. Introduction and overview ; 1.1. Aim of book ; 1.2. Criticality of structure and damage ; 1.3. Types of composite repairs and certification criteria ; 1.4. Overview of repair design and analysis process ; 1.5. Effect of load attraction in patch design ; 1.6. Effect of taper and scarf ratios on joint design ; 1.6.1. Safe-life approach ; 1.6.2. Damage tolerance approach ; 1.6.3. Stepped repairs ; 1.7. Summary ; References ; Chapter 2. Failure criteria ; 2.1. Introduction ; 2.2. Adhesive failure criteria ; 2.2.1. Failure criteria for brittle adhesives ; 2.2.2. Failure criteria for ductile adhesives ; 2.3. Composite failure criteria ; 2.3.1. Intralamina failure criteria ; 2.3.2. Interlaminar failure criteria ; 2.4. Summary ; References ; Chapter 3. Doubler joint analysis ; 3.1. Introduction ; 3.2. Untapered doublers and joints ; 3.2.1. Two-sided doublers and double strap joints ; 3.2.2. Elastic solution for adhesive peel and shear ; 3.3.3. Elastic-plastic solution for adhesive peel and shear ; 3.3.4. Effect of adherent shear deformation ; 3.3.5. Numerical examples ; 3.4. Summary ; References ; Chapter 4. Design of scarf and doubler-scarf joints ; 4.1. Introduction ; 4.2. Scarf joint of homogeneous adherends ; 4.2.1. Constant-angle scarf ; 4.2.2. Optimum angle of scarf between dissimilar materials 4.3. ; Composite scarf joints ; 4.3.1. Identical adherends with constant-angle scarf ; 4.3.2. Elasto-plastic stress analysis of scarf joints ; 4.4. Experiments and validation ; 4.4.1. Room temperature dry condition ; 4.4.2. Hot wet condition ; Doubler-scarf joints ; Conclusions ; References ; Chapter 5. Disbond and damage tolerance analysis of doubler repairs ; 5.1. Introduction ; 5.2. Analytical methods for delamination analysis ; 5.2.1. VCCT by FE method ; 5.2.2. Crack tip element approach ; 5.2.3. Cohesive zone model ; 5.3. Analytical methods for disbond analysis ; 5.4. Fatigue damage accumulation model for predicting interlaminar failure and disbond ; 5.5. Summary ; References ; Chapter 6. Damage tolerance and fatigue durability of scarf joints ; 6.1. Introduction ; 6.2. Impact damage of scarf joints and repairs ; 6.3. Effects of disbond on joint strength ; 6.4. Design methods ; 6.4.1. Average stress ; 6.4.2. Linear elastic fracture mechanics ; 6.4.3. Virtual crack closure technique (VCCT) ; 6.4.4. Cohesive zone model (CZM) ; 6.5. Verifications ; 6.5.1. Finite element model (FEM) ; 6.5.2. Strength prediction of scarf joints ; 6.6. Fatigue disbond growth life ; 6.6.1. Method ; 6.6.2. Experimental validation ; 6.6.3. Comparison between analysis and experiments ; 6.7. Discussion ; 6.8. Summary ; References ; Chapter 7. Design and analysis of doubler repairs ; 7.1. Introduction ; 7.2. Repair analysis for elliptical damages ; 7.2.1. Elastic solution for an elliptical hole in an anisotropic plate ; 7.2.2. Elastic solution for an elliptical inhomogeneity in a 2D anisotropic plate ; 7.2.3. Two-stage analysis procedure for determining load attraction and stress concentration ; 7.2.4. Strength assessment for an after repair damaged skin laminate ; 7.2.5. Bond line analysis by bonded joint or bonded doubler methods ; 7.3. Repair analysis for crack-line damages ; 7.3.1. Wang and Rose's crack bridging model ; 7.3.2. Two-stage analysis procedure for crack patching ; 7.4. Patch design for an elliptical damage ; 7.4.1. Design criteria and guidelines ; 7.4.2. Patch design algorithm 7.5. Summary ; References ; Chapter 8. Design and optimization of scarf repairs ; 8.1. Introduction ; 8.2. Residual strength of scarfed laminates ; 8.2.1. Tension and compression loading ; 8.2.2. Predictive modeling ; 8.3. Shape optimization of scarf repairs ; 8.3.1. Assessment of existing shaping methods 8.3.2. Optimum solution ; 8.3.3. Case studies ; 8.4. Structural doublers ; References -- Part 2. Manufacturing and inspection. Chapter 9. Repair manufacturing processes ; 9.1. Introduction ; 9.2. Scarfing operation ; 9.3. Repair patch manufacturing ; 9.3.1. Soft patch ; 9.3.2. Molded patch ; 9.4. Surface treatment ; 9.5. Adhesive bonding ; 9.6. Repair of thick laminates ; References ; Chapter 10. Non-destructive evaluation of bond ; 10.1. Introduction ; 10.2. Detection of disbonds ; 10.3. Detection of weak adhesion bonds ; 10.4. Local bond proof testing ; 10.5. Satellite coupon proof test ; References ; Index.
• Sommario/riassunto: Covering analysis of both internal and external joints and repairs, as well as damage tolerance, non-destructive inspection and self-healing repairs, this book provides essential information on the joints and repairs themselves but, critically, on how they differ from bonds and repairs to metallic aircraft.

Navigating Weather : A Pilot's Guide to Airborne and Datalink Weather Radar

• Record Nr.: UNINA9910809295503321
• Autore: Ison David
• Pubbl/distr/stampa: Ashland : , : Aviation Supplies & Academics, Inc., , 2021; ©2021
• ISBN: 1-64425-122-1
• Descrizione fisica: 1 online resource (181 pages)
• Disciplina: 629.132/4
• Soggetti: Radar in aeronautics; Airplanes
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Nota di contenuto: Intro -- About the Author -- Abbreviations and Acronyms -- Chapter 1. Radar History, Theory, Hardware, and Operation -- History of Radar: From Ancient Greece to the Glass Cockpit -- Radar Theory Basics -- Hardware -- Radar in Action: Operational Principles -- Conclusion -- Quiz -- Chapter 2. Storm Meteorology and Reflectivity -- Introduction -- Basic Storm Attributes -- Atmospheric Warning Signs -- Thunderstorm Disparities -- Examples -- Quiz -- Chapter 3: Airborne Weather Radar Operations -- Introduction -- Contouring/Storm Shapes -- Attenuation -- Sensitivity (Gain) -- Tilt -- Range -- Terrain Mapping with Radar -- Turbulence, Wind Shear Detection, and Other Advanced Features -- Operational Strategies -- Airborne Weather Radar Scenarios -- Chapter 4: Datalink Weather Radar Operations -- Introduction -- Brief History of Datalink Weather -- Sources of Datalink Radar Imagery -- System Operations: FIS-B and SXM -- NTSB Warning -- Strategies When Using Datalink Weather Radar -- Examples -- Quiz -- Appendix: Quiz Answer Keys -- Notes -- Index.
• Sommario/riassunto: Weather radar information is one of the most valuable tools available to pilots to ensure safe, efficient, and comfortable flight operations. Onboard weather radar allows pilots to tactically navigate near and around severe weather with confidence. And with the advent of datalink radar data systems, pilots of all types of aircraft and skill levels can easily access similar vital information. Yet pilots must understand how ; to use these technologies and their potential flaws to avoid inadvertently getting too close to or penetrating severe weather, which could obviously have detrimental outcomes.Author Dr. David Ison takes you through the fundamental knowledge and skills necessary to operate both airborne and datalink weather radar. With a focus on simplicity and real-world application, Dr. Ison introduces and explains the essential concepts of radar operation and interpretation. Beginning with radar and severe weather theory, he covers attributes of inclement weather phenomena, how they are detected, and how pilots can evaluate these conditions through available radar sources. Airborne weather radar essentials such as attenuation, tilt management, contouring, and gain are explained with real-world examples. The text outlines advanced features including auto-tilt, turbulence detection, wind shear warning systems, and terrain mapping and provides operational strategies for all phases of flight. The detailed sections on datalink radar information explain how the system works, how to use available data, and common pitfalls. Dr. Ison describes the advantages and disadvantages of both airborne and datalink radar systems to help pilots understand the best and most effective use of each.Each chapter provides case examples, concept questions to test your understanding, and scenarios to assess your judgment and evaluation skills. Regardless of your current skill level--and whether you are just considering adding datalink radar to your toolkit or have been flying with airborne radar for years--this book can serve as a fundamental reference on using radar data in flight.