Double Lap Shear Testing Of Coating Modified Ice Adhesion To Specific Shuttle Component Surfaces PDF Download

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Double Lap Shear Testing of Coating-Modified Ice Adhesion to Specific Shuttle Component Surfaces

Double Lap Shear Testing of Coating-Modified Ice Adhesion to Specific Shuttle Component Surfaces
Author:
Publisher:
Total Pages: 62
Release: 2006
Genre:
ISBN:

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The goals of this experimental program were to optimize the effectiveness of an icephobic coating for use on several Space Shuttle surfaces, to evaluate the effects of adding an ultraviolet light absorber (UVA) on coating performance, and to assess the consistency and durability of the basic coating and its modifications. The double lap shear test was used to quantify ice adhesion performance at a constant temperature of 112 C (170 F). The experiments used ice that was grown as strong and consistently as possible before being subjected to the extreme temperature decrease. Standardized coating application with a foam brush provided consistent and reproducible surface coverage. The program included 20 tests subdivided in two phases. Phase 1 focused on determining an optimal coating of Rain-X and varying weight fractions of PTFE powders MP-55 and UF-8TA. Ice adhesion to the UF-8TA coatings was similar to that of the uncoated controls. Conversely, the MP-55 coatings produced large reductions in ice adhesion. Through three cycles of phase 1 testing the M4 coating, a mixture of 60% Rain-X with 40% MP- 55, was the best and most consistent by a wide margin. As a result, M4 was the basis of all phase 2 mixes. Phase 2 tests sought to verify the effectiveness and durability of the optimal coating for several surfaces on the shuttle and to quantify any changes in effectiveness resulting from the addition of UVA to the coating. The ice adhesion to coated coupons with Koropon, Kapton tape, Kapton film, and Fire-X (fire-retardant paint) surfaces was a small fraction of the adhesion to corresponding uncoated coupons. Rain-X solvent loss during prolonged coating preparation caused a greater increase in ice adhesion than that of adding the UVA. A rapid mixing procedure was developed to minimize this problem. The M4 coating showed outstanding performance and durability through five cycles of ice growth and adhesive failure.


Double Lap Shear Testing of Coating Modified Ice Adhesion to Liquid Oxygen Food Line Bracket, Space Shuttle External Tank

Double Lap Shear Testing of Coating Modified Ice Adhesion to Liquid Oxygen Food Line Bracket, Space Shuttle External Tank
Author:
Publisher:
Total Pages: 92
Release: 2006
Genre:
ISBN:

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The brackets that secure the liquid oxygen feed line to the external tank are known locations of frost and ice growth during the period following fuel loading. This experiment quantified the reduced adhesion when ice phobic coating were applied to test coupons simulating the bracket surface. Double lap shear testing of coated and uncoated coupons provided robust test specimens and consistent load response patterns with exceptional resolution. For these tests ice was grown as strong and consistently as possible, subject to temperature decreases comparable to those of the prototype bracket, and tested at a controlled temperature of -112 degrees C. The tests evolved in three phases, with uncoated controls included in each group of tested samples. The first phase of testing evaluated a wide range of coatings, and showed that Rain-X mixed with MP-55 powdered Teflon (RXM) was outstanding coating to reduce ice adhesion to Koropon coated aluminum.


Adhesive Bonding of Aircraft Composite Structures

Adhesive Bonding of Aircraft Composite Structures
Author: Welchy Leite Cavalcanti
Publisher: Springer
Total Pages: 350
Release: 2021-06-04
Genre: Technology & Engineering
ISBN: 9783319928098

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This book is open access under a CC BY 4.0 license. It presents the results of the ComBoNDT European project, which aimed at the development of more secure, time- and cost-saving extended non-destructive inspection tools for carbon fiber reinforced plastics, adhered surfaces and bonded joints. The book reports the optimal use of composite materials to allow weight savings, reduction in fuel consumptions, savings during production and higher cost efficiency for ground operations.


Handbook of Adhesives and Sealants

Handbook of Adhesives and Sealants
Author: Edward M. Petrie
Publisher: McGraw Hill Professional
Total Pages: 1075
Release: 2007-01-02
Genre: Technology & Engineering
ISBN: 0071709819

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The Handbook of Adhesives and Sealants, 2nd Edition is primarily written to assist all those who have a permanent or temporary interest in adhesives and sealants. For those new to the field, the Handbook will provide a fundamental knowledge base of materials and processes as well as reasons why they work and (more importantly) why they don’t work. To the more experienced reader, the breadth and thoroughness of the Handbook will provide a way to reduce time spent on trial and error development or on searching for the optimal recommended process. For the academic, the Handbook will connect the important theories regarding surface science, polymeric materials, and mechanics with practical products and applications of commercial significance. This edition includes major new sections on radiation curable adhesive, biological and naturally occurring adhesives, inorganic adhesives, role of bulk properties of the adhesive, non-destructive testing, and industrial application methods. A completely new chapter is devoted to adhesives used in various industries such as automobile, electrical / electronic, construction, packaging, aerospace, household do-it-yourself, and medical.


Columbia Crew Survival Investigation Report

Columbia Crew Survival Investigation Report
Author: Nasa
Publisher: PDQ Press
Total Pages: 400
Release: 2009
Genre: History
ISBN: 9780979828898

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NASA commissioned the Columbia Accident Investigation Board (CAIB) to conduct a thorough review of both the technical and the organizational causes of the loss of the Space Shuttle Columbia and her crew on February 1, 2003. The accident investigation that followed determined that a large piece of insulating foam from Columbia's external tank (ET) had come off during ascent and struck the leading edge of the left wing, causing critical damage. The damage was undetected during the mission. The Columbia accident was not survivable. After the Columbia Accident Investigation Board (CAIB) investigation regarding the cause of the accident was completed, further consideration produced the question of whether there were lessons to be learned about how to improve crew survival in the future. This investigation was performed with the belief that a comprehensive, respectful investigation could provide knowledge that can protect future crews in the worldwide community of human space flight. Additionally, in the course of the investigation, several areas of research were identified that could improve our understanding of both nominal space flight and future spacecraft accidents. This report is the first comprehensive, publicly available accident investigation report addressing crew survival for a human spacecraft mishap, and it provides key information for future crew survival investigations. The results of this investigation are intended to add meaning to the sacrifice of the crew's lives by making space flight safer for all future generations.


Adhesion of Dust and Powder

Adhesion of Dust and Powder
Author: Anatolii D. Zimon
Publisher: Springer Science & Business Media
Total Pages: 445
Release: 2012-12-06
Genre: Technology & Engineering
ISBN: 1461585767

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ties on adhesion (Chapter V); and the detachment of particles by an air stream (Chapter X). The other chapters have undergone substantial revision: New material has been introduced, and topics such as autohesion, wetting, film ad hesion, and surface washing have been eliminated. The expansion of research on adhesive interaction has led to many joint endeavors with students and followers; the author gives special thanks to G. A. Serebryakov, K. A. Lazarev, E. I. Andrianov, E. I. Dergunov, and E. A. Ronginskii. Many years of creative cooperation bind the author to the staff of the Omsk Branch of the Frunze Polytechnic Institute, headed by Zh. T. Tekenov, Candidate of Physico mathematical Sciences. The author thanks Professor G.1. Fuks, Doctor of Chemical Sciences, for his help in the preparation of the first and second editions of this monograph; his constructive criticism and gracious assistance have raised the level of quality of the material set forth here. In the preparation of this book, as in all the previous books, inestimable help has been given by my wife, Antonina Alekseevna Zimon, without whose participation it would have been unthinkable to carry out such a volume of work.


Liquid Rocket Valve Components

Liquid Rocket Valve Components
Author: H. J. Ellis
Publisher:
Total Pages: 156
Release: 1973
Genre: Liquid propellant rockets
ISBN:

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Handbook of Adhesives

Handbook of Adhesives
Author: Irving Skeist
Publisher: Springer Science & Business Media
Total Pages: 785
Release: 2012-12-06
Genre: Technology & Engineering
ISBN: 146130671X

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Adhesives are indispensable. They are required pling agents, and other key ingredients. Special in myriad products-aircraft and abrasives, cars attention is given to such flourishing categories and cartons, shoes and safety glass, tape and as acrylics, anaerobics, cyanoacrylates, poly urethanes, epoxy resins, polyvinyl acetate, high tires. This Third Edition of Handbook of Ad hesives, like the 1962 and 1977 editions, seeks temperature adhesives, hot melts, silicones, and to provide the knowledge needed for optimum silanes. selection, preparation, and utilization of adhe The last 14 chapters, on adherends and bond sives and sealants. The information is detailed ing technology, involve the auto industry, air and explicit, with several hundred illustrative craft, electronics, the bonding of wood, formulations. textiles, rubber and plastics, construction, ab Expert information has been supplied in 47 rasives, pressure-sensitives, nonwovens, and chapters written by 70 industry specialists, pro sealants. Mechanical handling of two-compo fessors, and consultants. Five chapters on fun nent systems is examined. The concluding damentals provide the theoretical and economic chapter highlights the exciting progress that is underpinnings-why adhesives work, how they being made in the use of robotics to apply ad are selected, how the surface is prepared, how hesives, techniques already far advanced in au they are applied, how they are set, how the tomotive assembly. cured joint is tested.


Adhesives Technology Handbook

Adhesives Technology Handbook
Author: Sina Ebnesajjad
Publisher: William Andrew
Total Pages: 437
Release: 2014-11-26
Genre: Technology & Engineering
ISBN: 0323356028

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Covering a wide range of industrial applications across sectors including medical applications, automotive/aerospace, packaging, electronics, and consumer goods, this book provides a complete guide to the selection of adhesives, methods of use, industrial applications, and the fundamentals of adhesion. Dr Ebnesajjad examines the selection of adhesives and adhesion methods and challenges for all major groups of substrate including plastics (thermosets and thermoplastics), elastomers, metals, ceramics and composite materials. His practical guidance covers joint design and durability, application methods, test methods and troubleshooting techniques. The science and technology of adhesion, and the principles of adhesive bonding are explained in a way that enhances the reader's understanding of the fundamentals that underpin the successful use and design of adhesives. The third edition has been updated throughout to include recent developments in the industry, with new sections covering technological advances such as nanotechnology, micro adhesion systems, and the replacement of toxic chromate technology. Provides practitioners of adhesion technology with a complete guide to bonding materials successfully Covers the whole range of commonly used substrates including plastics, metals, elastomers and ceramics, explaining basic principles and describing common materials and application techniques Introduces the range of commercially available adhesives and the selection process alongside the science and technology of adhesion