A Study of the Failure of Joints in Composite Material Fuel Cells Due to Hydraulic Ram Loading

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ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.:/5 (86 download)

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Book Synopsis A Study of the Failure of Joints in Composite Material Fuel Cells Due to Hydraulic Ram Loading by : Henry Speer Ezzard

Download or read book A Study of the Failure of Joints in Composite Material Fuel Cells Due to Hydraulic Ram Loading written by Henry Speer Ezzard and published by . This book was released on 1976 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this research were to show the relative importance of the transverse shearing forces, the bending meoments, and the tensile forces produced by hydraulic ram loading on military aircraft fuel tank joint designs for composite materials, and to present fuel tank test section designs. With the use of a finite element analysis, it was shown that the transverse shearing force may be major cause of attachment failure of composites, primarily by an unzipping or pull out mode of failure. It was also shown that failure criteria for transverse shearing stresses in composites are lacking. By comparing several specific aircraft design concepts, designs for a wing fuel test tank and a fuselage fuel test tank were selected. Simplicity, similarity to actual aircraft fuel tanks, and uniformity between experiments were primary considerations in the selection. (Author).

A Study of the Failure of Joints in Composite Material Fuel Cells Due to Hydraulic Ram Loading

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ISBN 13 :
Total Pages : 90 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis A Study of the Failure of Joints in Composite Material Fuel Cells Due to Hydraulic Ram Loading by : Henry Speer Ezzard (Jr)

Download or read book A Study of the Failure of Joints in Composite Material Fuel Cells Due to Hydraulic Ram Loading written by Henry Speer Ezzard (Jr) and published by . This book was released on 1976 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objectives of this research were to show the relative importance of the transverse shearing forces, the bending meoments, and the tensile forces produced by hydraulic ram loading on military aircraft fuel tank joint designs for composite materials, and to present fuel tank test section designs. With the use of a finite element analysis, it was shown that the transverse shearing force may be major cause of attachment failure of composites, primarily by an unzipping or pull out mode of failure. It was also shown that failure criteria for transverse shearing stresses in composites are lacking. By comparing several specific aircraft design concepts, designs for a wing fuel test tank and a fuselage fuel test tank were selected. Simplicity, similarity to actual aircraft fuel tanks, and uniformity between experiments were primary considerations in the selection. (Author).

Scientific and Technical Aerospace Reports

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Publisher :
ISBN 13 :
Total Pages : 1006 pages
Book Rating : 4.X/5 (4 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1977 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Masters Theses in the Pure and Applied Sciences

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Publisher : Springer Science & Business Media
ISBN 13 : 1475757824
Total Pages : 304 pages
Book Rating : 4.4/5 (757 download)

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Book Synopsis Masters Theses in the Pure and Applied Sciences by : Wade H. Shafer

Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and dis seminated by the Center for lnformation and Numerica/ Data Analysis and Synthesis (C/NDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the ac tivity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficia! to the academic and general scientific and technical community. After fi ve years of this joint undertaking we had concluded that it was in the interest of ali concerned if the printing and distribution of the volume were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and App/ied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. Ali back issues can also be ordered from Plenum. We have reported in Volume 21 (thesis year 1976) a total of 10,586 theses titles from 25 Canadian and 219 United States universities. We are sure that this broader base for theses titles reported will greatly enhance the value of this important annual reference work.

Energy

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ISBN 13 :
Total Pages : 990 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Energy by :

Download or read book Energy written by and published by . This book was released on 1977 with total page 990 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Energy: a Continuing Bibliography with Indexes

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ISBN 13 :
Total Pages : 454 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Energy: a Continuing Bibliography with Indexes by :

Download or read book Energy: a Continuing Bibliography with Indexes written by and published by . This book was released on 1977 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Hydraulic Ram Effect on Composite Fuel Cell Entry Walls

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Publisher :
ISBN 13 :
Total Pages : 75 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Hydraulic Ram Effect on Composite Fuel Cell Entry Walls by : Alfred Nicholas Duva (Jr)

Download or read book Hydraulic Ram Effect on Composite Fuel Cell Entry Walls written by Alfred Nicholas Duva (Jr) and published by . This book was released on 1976 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catastrophic failure of a partially filled aircraft fuel cell due to impact and penetration by a high speed projectile often occurs due to a phenomenon known as hydraulic ram. The structural response of the fuel tank walls to hydraulic ram should be of vital concern to the designers of aircraft fuel cells. Considerable research has been conducted to determine the effects of hydraulic ram on metallic fuel cells, but very little attention has been given to fuel cells made with the new advanced composite materials. The purpose of this research is to examine the various effects of hydraulic ram on a graphite/epoxy wall when subjected to penetration by a .222 caliber projectile. Eight hydraulic ram tests are made on a clamped 11-inch square plate 0.067 inches thick at projectile velocities between 2600 and 2800 fps. The engineering properties of the laminate are determined both analytically and experimentally. The low velocity shots caused only slight damage to the plate. At the higher velocities, the hydraulic ram caused considerable damage, including total serverance of the plate from its clamped support over much of the outer perimeter. The results of this research illustrate the importance of the method of attachment of the composite wall at its boundaries. (Author).

NASA SP.

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ISBN 13 :
Total Pages : 654 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis NASA SP. by :

Download or read book NASA SP. written by and published by . This book was released on 1978 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fibre Reinforced Polymers, International Dissertation

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Publisher : CRC Press
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.0/5 ( download)

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Book Synopsis Fibre Reinforced Polymers, International Dissertation by : John Summerscales

Download or read book Fibre Reinforced Polymers, International Dissertation written by John Summerscales and published by CRC Press. This book was released on 1988 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fatigue and Fracture of Adhesively-Bonded Composite Joints

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Publisher : Elsevier
ISBN 13 : 0857098128
Total Pages : 553 pages
Book Rating : 4.8/5 (57 download)

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Book Synopsis Fatigue and Fracture of Adhesively-Bonded Composite Joints by : Anastasios P. Vassilopoulos

Download or read book Fatigue and Fracture of Adhesively-Bonded Composite Joints written by Anastasios P. Vassilopoulos and published by Elsevier. This book was released on 2014-10-21 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is commonly accepted that the majority of engineering failures happen due to fatigue or fracture phenomena. Adhesive bonding is a prevailing joining technique, widely used for critical connections in composite structures. However, the lack of knowledge regarding fatigue and fracture behaviour, and the shortage of tools for credible fatigue design, hinders the potential benefits of adhesively bonded joints. The demand for reliable and safe structures necessitates deep knowledge in this area in order to avoid catastrophic structural failures. This book reviews recent research in the field of fatigue and fracture of adhesively-bonded composite joints. The first part of the book discusses the experimental investigation of the reliability of adhesively-bonded composite joints, current research on understanding damage mechanisms, fatigue and fracture, durability and ageing as well as implications for design. The second part of the book covers the modelling of bond performance and failure mechanisms in different loading conditions. - A detailed reference work for researchers in aerospace and engineering - Expert coverage of different adhesively bonded composite joint structures - An overview of joint failure

Government Reports Annual Index

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ISBN 13 :
Total Pages : 876 pages
Book Rating : 4.:/5 (3 download)

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Book Synopsis Government Reports Annual Index by :

Download or read book Government Reports Annual Index written by and published by . This book was released on 1976 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Aeronautical Engineering

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ISBN 13 :
Total Pages : 644 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis Aeronautical Engineering by :

Download or read book Aeronautical Engineering written by and published by . This book was released on 1978 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt: A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).

Government Reports Announcements & Index

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ISBN 13 :
Total Pages : 1370 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Government Reports Announcements & Index by :

Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1976 with total page 1370 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Response and Failure of Composite Plates with a Bolt-filled Hole

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ISBN 13 :
Total Pages : 86 pages
Book Rating : 4.:/5 (1 download)

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Book Synopsis Response and Failure of Composite Plates with a Bolt-filled Hole by :

Download or read book Response and Failure of Composite Plates with a Bolt-filled Hole written by and published by . This book was released on 1998 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: This progress report summarizes the activities that have been performed under the sponsorship of the Federal Aviation Administration (FAA) under contract no. DEPT/95-G-012-0001 from May 1, 1996 to June 1, 1997. This program is considered to be a part of a special joint project between the FAA and the Boeing Company on the design of composite bolted joints. The major effort of the joint project is to develop the most advanced computer code for the analysis and design of bolted composite joints for the Boeing Company and the FAA. The major focus of the FAA program is on net-tension failure of composites containing a circular cutout with or without a mechanically tightened bolt, while the Boeing program focuses on the bearing damage of bolted joints in both double and single lap joints. This report describes the activities under FAA funding. Both experimental and analytical work have been conducted.

Failure Analysis of Composite Bonded Joints

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ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (946 download)

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Book Synopsis Failure Analysis of Composite Bonded Joints by :

Download or read book Failure Analysis of Composite Bonded Joints written by and published by . This book was released on 1999 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Because of the ineffectiveness of the commonly used failure criteria, current analysis methods fail to accurately predict the strength of bonded composite joints. This analytical shortfall results in overly conservative joint designs. In a composite bonded joint, failure typically occurs in the first ply of the parent laminate near the stress singularity. In this study, and average strain approach is used to analyze this area and the first strain invariant failure Criterion, also called the J, failure criterion, is adopted to predict the failure load of composite bonded joints. The analysis is based on a plane strain two-dimensional finite element model, which includes both the effects of geometric and material nonlinearity. The predicted failure loads correlate well with reported test results. Utilizing existing test data for composite bonded joints, it was found that the critical J values in the first ply of the parent laminates are almost constant. The merit of the J failure criterion is that it is valid for various environmental conditions, loading conditions, and surface ply orientations.

Effects of Load Proportioning on the Capacity of Multiple-hole Composite Joints

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ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Effects of Load Proportioning on the Capacity of Multiple-hole Composite Joints by :

Download or read book Effects of Load Proportioning on the Capacity of Multiple-hole Composite Joints written by and published by . This book was released on 1985 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Literature Review on the Design of Composite Mechanically Fastened Joints

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Publisher : National Research Council Canada
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (4 download)

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Book Synopsis Literature Review on the Design of Composite Mechanically Fastened Joints by : C. Poon

Download or read book Literature Review on the Design of Composite Mechanically Fastened Joints written by C. Poon and published by National Research Council Canada. This book was released on 1986 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents a literature review of the state-of-the-art analyticaland experimental methodologies adopted in the aerospace indestry for thedesign of mechanically fastened joints in composite structures. Results andconclusions obtained from the published literature relating to the effectsof critical parameters, which include composite material system, fastenerconfiguration and joint geometry, on the mechanical behaviour and failuremodes of composite mechanically fastened joints are discussed. Furtherresearch required to improve the design of composite mechanically fastenedjoints is identified as a result of this review.