Reliability Of Copvs Accounting For Margin Of Safety On Design Burst

Author : National Aeronautics and Space Adm Nasa
Publisher : Independently Published
Page : 34 pages
File Size : 41,8 Mb
Release : 2019-01-19
Category : Science
ISBN : 1794375007

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Reliability of Copvs Accounting for Margin of Safety on Design Burst by National Aeronautics and Space Adm Nasa Pdf

In this paper, the stress rupture reliability of Carbon/Epoxy Composite Overwrapped Pressure Vessels (COPVs) is examined utilizing the classic Phoenix model and accounting for the differences between the design and the actual burst pressure, and the liner contribution effects. Stress rupture life primarily depends upon the fiber stress ratio which is defined as the ratio of stress in fibers at the maximum expected operating pressure to actual delivered fiber strength. The actual delivered fiber strength is calculated using the actual burst pressures of vessels established through burst tests. However, during the design phase the actual burst pressure is generally not known and to estimate the reliability of the vessels calculations are usually performed based upon the design burst pressure only. Since the design burst is lower than the actual burst, this process yields a much higher value for the stress ratio and consequently a conservative estimate for the reliability. Other complications arise due to the fact that the actual burst pressure and the liner contributions have inherent variability and therefore must be treated as random variables in order to compute the stress rupture reliability. Furthermore, the model parameters, which have to be established based on stress rupture tests of subscale vessels or coupons, have significant variability as well due to limited available data and hence must be properly accounted for. In this work an assessment of reliability of COPVs including both parameter uncertainties and physical variability inherent in liner and overwrap material behavior is made and estimates are provided in terms of degree of uncertainty in the actual burst pressure and the liner load sharing. Murthy, Pappu L.N. Glenn Research Center NASA/TM-2012-217638, E-18283

Author : P. L. N. Murthy
Publisher : Unknown
Page : 11 pages
File Size : 47,7 Mb
Release : 2012
Category : Electronic
ISBN : OCLC:824456197

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Reliability of COPVs accounting for margin of safety on design burst by P. L. N. Murthy Pdf

Author : Anonim
Publisher : Unknown
Page : 684 pages
File Size : 40,5 Mb
Release : 1997
Category : Aeronautics
ISBN : STANFORD:36105021091397

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International Aerospace Abstracts by Anonim Pdf

Author : Werner Behrens,P. M. Hawranek,United Nations Industrial Development Organization
Publisher : Vienna : United Nations Industrial Development Organization
Page : 404 pages
File Size : 54,5 Mb
Release : 1991
Category : Business & Economics
ISBN : UOM:39015025210157

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Manual for the Preparation of Industrial Feasibility Studies by Werner Behrens,P. M. Hawranek,United Nations Industrial Development Organization Pdf

ID/372. Also available in hardback (ISBN 9211062705)

Author : Tren Griffin
Publisher : Columbia University Press
Page : 218 pages
File Size : 54,6 Mb
Release : 2015-09-15
Category : Business & Economics
ISBN : 9780231540414

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Charlie Munger by Tren Griffin Pdf

Charlie Munger, Berkshire Hathaway's visionary vice chairman and Warren Buffett's indispensable financial partner, has outperformed market indexes again and again, and he believes any investor can do the same. His notion of "elementary, worldly wisdom"—a set of interdisciplinary mental models involving economics, business, psychology, ethics, and management—allows him to keep his emotions out of his investments and avoid the common pitfalls of bad judgment. Munger's system has steered his investments for forty years and has guided generations of successful investors. This book presents the essential steps of Munger's investing strategy, condensed here for the first time from interviews, speeches, writings, and shareholder letters, and paired with commentary from fund managers, value investors, and business-case historians. Derived from Ben Graham's value-investing system, Munger's approach is straightforward enough that ordinary investors can apply it to their portfolios. This book is not simply about investing. It is about cultivating mental models for your whole life, but especially for your investments.

Author : United States. Department of State
Publisher : Unknown
Page : 106 pages
File Size : 44,5 Mb
Release : 1993
Category : Arms transfers
ISBN : UOM:39015028935230

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International Traffic in Arms Regulations (ITAR) (22 CFR 120-130). by United States. Department of State Pdf

Author : Joel Greenblatt
Publisher : Simon and Schuster
Page : 218 pages
File Size : 54,8 Mb
Release : 2010-11-02
Category : Business & Economics
ISBN : 9781451628067

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You Can Be a Stock Market Genius by Joel Greenblatt Pdf

A successful stock fund manager reveals the secrets behind a fifty percent return in this comprehensive, practical guide featuring all the tools you’ll need. Fund manager Joel Greenblatt has been beating the Dow (with returns of fifty percent a year) for more than a decade. And now, in this highly accessible guide, he’s going to show you how to do it, too. You’re about to discover investment opportunities that portfolio managers, business-school professors, and top investment experts regularly miss—uncharted areas where the individual investor has a huge advantage over the Wall Street wizards. Here is your personal treasure map to special situations in which big profits are possible, including: Spin-offs Restructurings Merger Securities Rights Offerings Recapitalizations Bankruptcies Risk Arbitrage This is a practical and easy-to-use investment reference, filled with case studies, important background information, and all the tools you’ll need. All it takes is a little extra time and effort—and you can be a stock market genius.

Author : Julian S. Hatcher
Publisher : Stackpole Books
Page : 598 pages
File Size : 41,8 Mb
Release : 1962
Category : History
ISBN : 0811707954

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Hatcher's Notebook by Julian S. Hatcher Pdf

Handgun enthusiasts, gun-owning do-it-yourself, law enforcement officials, and gunsmiths here is the ultimate one-volume guide to acquiring and developing all the necessary skills for making pistol repairs at home, from helpful hints on work space and setting up a small shop, to the tools needed and how to use them properly, to welding, hardening, and gun finishing. All this valuable information, plus much more, is contained in this easy-to-use reference for handgun aficionados.

Author : Charles E. Bakis
Publisher : ASTM International
Page : 394 pages
File Size : 47,7 Mb
Release : 2003
Category : Composite materials
ISBN : 9780803134652

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Composite Materials by Charles E. Bakis Pdf

"The 14th ASTM Symposium on Composite Materials: Testing and Design, was held March 11-12, 2002 in Pittsburgh, PA. The Testing and Design symposia, sponsored by Committee D30 on Composite Materials, have been scheduled on a roughly bi-yearly basis since 1969 to provide a forum for researchers and practitioners to meet and exchange their latest methods and findings related to the testing and design of composite materials and structures."

Author : Hanspeter Mössenböck
Publisher : Springer Science & Business Media
Page : 288 pages
File Size : 45,5 Mb
Release : 2012-12-06
Category : Computers
ISBN : 9783642798986

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Object-Oriented Programming in Oberon-2 by Hanspeter Mössenböck Pdf

Without a doubt the idea of object-oriented programming has brought some motion into the field of programming methodology and enlarged the set of programming languages. Object-oriented programming is nothing new-it first arose in the sixties. The motivation came from the simulation of discrete event systems. The concept first manifested itself in the language Simula 67. It took nearly two decades for the method to gain impetus, and today object-oriented programming is an important concept and a powerful technique. Meanwhile, we can even speak of an over reaction, for the concept has become a buzzword. But buzzwords always appear where there is the hope of exploiting ill-informed clients because they see the new approach as the solution to all their problems. Thus object-oriented programming is often hailed as a panacea. And so the question is justified: What is really behind it? To let the cat out of the bag: There is more to object-oriented programming than merely putting data as objects in the fore ground, instead of algorithms to which the data are subject. It is more than purely an alternative view of programmed systems. To identify the essence of object-oriented programming, is the subject of this book. This is a textbook that shows in a didactically skillful way which concepts and constructs are new, where they can be employed reasonably, and what advantages they offer. For, not all programs are automatically improved by merely recasting them in an object-oriented style.

Author : Seth A. Klarman
Publisher : Harpercollins
Page : 249 pages
File Size : 54,6 Mb
Release : 1991
Category : Business & Economics
ISBN : 0887305105

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Margin of Safety by Seth A. Klarman Pdf

Tells how to avoid investment fads, explains the basic concepts of value-investment philosophy, and offers advice on portfolio management

Author : Troy Noonan
Publisher : ClydeBank Media LLC
Page : 481 pages
File Size : 52,6 Mb
Release : 2020-06-01
Category : Business & Economics
ISBN : 9781945051616

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Day Trading QuickStart Guide by Troy Noonan Pdf

The Ultimate Beginner's Guide to Day Trading The ONLY Day Trading Book Complete With a Library of FREE Digital Trading Tools + $1,000 Trading Commission Rebate to One of the Largest Trading Brokers Online! Trade for FREE with your $1,000 commission rebate as you learn how to become a successful day trader using the techniques and strategies inside Day Trading QuickStart Guide. Don't be fooled by fake 'gurus' and fly-by-night 'books' written by anonymous authors. Author Troy Noonan has already made hundreds of successful day traders using the exact information in this book. Are you ready to be the next success story? If you are SERIOUS about achieving financial freedom through day trading than look no further than Day Trading QuickStart Guide! Day Trading QuickStart Guide smashes the myth that successful day traders are math experts, careless risk junkies, or compulsive gamblers. Using the tactics and enclosed in these chapters, you'll learn the exact skills needed to find real success while keeping your risk to an absolute bare minimum. Author Troy Noonan is a professional full-time trader and day trading coach with over 25 years of experience. The original 'Backpack Trader', Noonan has helped thousands of students in over 100 countries become successful traders using the exact methods and strategies shared in this book. His story, and the success stories of his students, is living proof that anyone can take advantage of the freedom (financial and otherwise) that day trading offers. Low-cost trading platforms, the ability to trade from anywhere at any time, and the comprehensive education you'll receive Day Trading QuickStart Guide means that there has NEVER been a better time to learn how to day trade. Use the knowledge gained from reading this book to hobby day trade, supplement your current income, or day trade as a business; getting started takes less capital than you might think! Day Trading QuickStart Guide Is Perfect For: - Complete beginners - even if you've never bought a single stock before! - People who tried day trading in the past but didn't find success because of phony gurus and courses - Existing traders who want to hone their skills & increase their earning potential - Anyone who wants the freedom of making full-time income with part-time effort! Day Trading QuickStart Guide Explains: - The Inner Workings of the Derivatives Market - Futures Trading Contracts, How They Work and How to Maximize their Efficiency - How to Day Trade Options and Use Options Contracts to Hedge Against Risk - The Mechanics of Forex Trading and How to Use Foreign Currency Markets to Your Benefit You Will Learn: - Day Trading Fundamentals, from the Anatomy of a Trade to Powerful Trade Plans For Serious Returns - Technical Analysis, the Backbone of Finding and Executing Winning Trades - Trading Psychology, a Key Aspect That Allows Traders to Rise to the Top - The Surprisingly Simple Way to Interpret Market Charts and Act Based on Your Findings Before Anyone Else - Technical Indicators, Patterns, Trade Plans, and Mistakes New Traders Must Avoid *LIFETIME ACCESS TO FREE DAY TRADING DIGITAL ASSETS* Day Trading QuickStart Guide comes with lifetime access to a library of exclusive tools and videos designed to help you get started quickly and become a better trader faster. *GIVING BACK* QuickStart Guides proudly supports One Tree Planted as a reforestation partner.

Author : Sven Carlin
Publisher : Independently Published
Page : 294 pages
File Size : 46,5 Mb
Release : 2018-04-24
Category : Business & Economics
ISBN : 1980839077

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Modern Value Investing by Sven Carlin Pdf

My personal goal is to help people reach their financial goals. One way of doing that is through investing education. The book is my attempt to help with the development of a strong investing mindset and skillset to help you make better investment decisions. There is a gap in the value investing world. Benjamin Graham published The Intelligent Investor in 1949 with several subsequent editions up to 1972, while Seth Klarman published Margin of Safety in 1991. With more than 50 years since Graham published his masterpiece and almost 30 since Klarman's, there was the need for a contemporary book to account for all the changes in the financial environment we live in.Modern Value Investing book does exactly that, in 4 parts.Part 1 discusses the most important psychological traits a successful investor should have. Part 2 describes 25 tools that help with investment analysis.Part 3 applies those tools on an example. Part 4 is food for investing thought as it discusses modern approaches to investing. Approaches range from an all-weather portfolio strategy to hyperbolic discounting and others you can take advantage of when the time is right.

Author : Anonim
Publisher : Unknown
Page : 4 pages
File Size : 51,7 Mb
Release : 1968
Category : Aeronautics
ISBN : UIUC:30112101592217

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Langley Research Center by Anonim Pdf

Author : Bahram Farahmand
Publisher : Springer Science & Business Media
Page : 420 pages
File Size : 55,7 Mb
Release : 2009-06-29
Category : Science
ISBN : 9780387959245

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Virtual Testing and Predictive Modeling by Bahram Farahmand Pdf

Thematerialsusedinmanufacturingtheaerospace,aircraft,automobile,andnuclear parts have inherent aws that may grow under uctuating load environments during the operational phase of the structural hardware. The design philosophy, material selection, analysis approach, testing, quality control, inspection, and manufacturing are key elements that can contribute to failure prevention and assure a trouble-free structure. To have a robust structure, it must be designed to withstand the envir- mental load throughout its service life, even when the structure has pre-existing aws or when a part of the structure has already failed. If the design philosophy of the structure is based on the fail-safe requirements, or multiple load path design, partial failure of a structural component due to crack propagation is localized and safely contained or arrested. For that reason, proper inspection technique must be scheduled for reusable parts to detect the amount and rate of crack growth, and the possible need for repairing or replacement of the part. An example of a fail-sa- designed structure with crack-arrest feature, common to all aircraft structural parts, is the skin-stiffened design con guration. However, in other cases, the design p- losophy has safe-life or single load path feature, where analysts must demonstrate that parts have adequate life during their service operation and the possibility of catastrophic failure is remote. For example, all pressurized vessels that have single load path feature are classi ed as high-risk parts. During their service operation, these tanks may develop cracks, which will grow gradually in a stable manner.