Download or read book Evaluation of the Impact Response of Textile Composites written by National Aeronautics and Space Adm Nasa and published by . This book was released on 2018-10-28 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: An evaluation of the impact damage resistance and impact damage tolerance of stitched and unstitched uniweaves, 2-D braids, and 3-D weaves was conducted. Uniweave laminates were tested at four thicknesses to determine the sensitivity of the tests to this parameter. Several braid and weave parameters were also varied to establish their velocity (large mass) impacts and then loaded in tension or compression to measure residual strength. Experimental results indicate that stitching significantly improves the uniweaves' damage resistance. The 2-D braids and 3-D weaves offered less damage resistance than the stitched materials. Stitching also improved the compression after impact (CAI) and tension after impact (TAI) strengths of the uniweave materials. Portanova, M. A. Unspecified Center...
Download or read book Evaluation of the Impact Response of Textile Composites written by M. A. Portanova and published by . This book was released on 1995 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Comparative Theoretical Study of Quasi Static and Impact Response of Laminated and Textile Composite Structures written by and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report presents the details of the computational algorithm for a novel three-dimensional variational dynamic analysis approach developed in computational algorithm of impact contact problem based on variational mosaic model and numerical examples. The analysis approach is aimed at solving a variety of stress analysis problems of composite structural parts under the effect of impulsive and impact loads. Some specific applications of the developed analysis are shown on the examples of transverse dynamic bending of simply supported laminated plate and 3D contact analysis for a multi-brick structure under longitudinal and transverse longitudinal rigid body impact. Numerical results clearly show dynamic effects in response of simply supported laminated plate at high rate of transverse dynamic bending. As the rate of transverse dynamic bending decreases the response of simply supported laminated plate reduces to the corresponding benchmark static solution tensile response of 3D woven fabrics. This example shows the capability of the developed computer code to solve 3D dynamic problems for a wide range of dynamic loading rate. Numerical results for the 3D impact contact problem illustrate time variations of the target displacements, strains and stresses as well as the time variations of the projectile displacement and velocity and impact contact pressure obtained from solution of the coupled problem for mechanical system "projectile-target". Considered numerical examples validate applicability and verify accuracy of the developed computational algorithm and computer code.
Download or read book Proceedings of the Tenth International Conference on Composite Materials written by Anoush Poursartip and published by Woodhead Publishing. This book was released on 1995 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings of the 5th China Aeronautical Science and Technology Conference written by Chinese Aeronautical Society and published by Springer Nature. This book was released on 2021-11-02 with total page 1073 pages. Available in PDF, EPUB and Kindle. Book excerpt: To sort out the progress of aviation science and technology and industry, look forward to the future development trend, commend scientific and technological innovation achievements and talents, strengthen international cooperation, promote discipline exchanges, encourage scientific and technological innovation, and promote the development of aviation, the Chinese Aeronautical Society holds a China Aviation Science and Technology Conference every two years, which has been successfully held for four times and has become the highest level, largest scale, most influential and authoritative science and technology conference in the field of aviation in China. The 5th China Aviation Science and Technology Conference will be held in Wuzhen, Jiaxing City, Zhejiang Province in 2021, with the theme of "New Generation of Aviation Equipment and Technology", with academician Zhang Yanzhong as the chairman of the conference. This book contains original, peer-reviewed research papers from the conference. The topics covered include but are not limited to navigation, guidance and control technologies, key technologies for aircraft design and overall optimization, aviation test technologies, aviation airborne systems, electromechanical technologies, structural design, aerodynamics and flight mechanics, other related technologies, advanced aviation materials and manufacturing technologies, advanced aviation propulsion technologies, and civil aviation transportation. The papers presented here share the latest discoveries on aviation science and technology, making the book a valuable asset for researchers, engineers, and students.
Download or read book Modeling of the Impact Response of Fibre Reinforced Composites written by Eng Sci Dept/U and published by CRC Press. This book was released on 2020-08-18 with total page 139 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarises the development of experimental techniques for determining the impact mechanical properties of fibre reinforced epoxy laminates, and the experimental results obtained for the tensile, compressive and interlaminar shear properties of various epoxy laminates.
Download or read book Stress and Failure Analysis of Textile Composites Using a Global local Element Method written by Kyeongsik Woo and published by . This book was released on 1993 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1996 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling of the Impact Response of Fibre Reinforced Composites written by Eng Sci Dept/U and published by CRC Press. This book was released on 2020-08-18 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book summarises the development of experimental techniques for determining the impact mechanical properties of fibre reinforced epoxy laminates, and the experimental results obtained for the tensile, compressive and interlaminar shear properties of various epoxy laminates.
Download or read book Issues in the Analysis and Testing of Textile Composites with Large Representative Volume Elements written by Gerd Weissenbach and published by Universal-Publishers. This book was released on 2004-12 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: The high degree of heterogeneity of textile composites was found to be the primary problem in analysis and testing. A concept was developed based on a description of the local variation of the material stiffness matrix using a spline interpolation. The role of this stiffness function is to facilitate the calculation of the material stiffness matrix at any given position or for arbitrary domains in the form of finite elements.Based on this approach, two different methods were developed. In the first method the average material stiffness matrix is calculated for a finite element and subsequently the elemental stiffness matrix of this element is assembled. In the second approach the elemental stiffness matrix is calculated directly using the local material stiffness at the integration points of the finite element. This concept was then applied to the plate twist test. The numerical analysis of this test was done in order to determine the influence of heterogeneity on the test results. It was shown that this test measures the in-plane shear modulus largely independent of the representative volume element (RVE) size. Both finite element approaches were then applied to the V-notched beam shear test, to investigate the applicability of this test to the measurement of the shear properties. The test set-up as well as numerical parameters of the finite element analysis of the test were studied. It was possible to derive limits for the applicability of the V-notched beam shear test in terms of RVE size, as well as set up guidelines for the finite element analysis of textile composites. With electronic speckle pattern interferometry, which enables full-field displacement and strain measurements, tensile tests were carried out on 3D-woven textile composite specimens. With the agreement of the experimental results and the theoretical predictions the validity of the developed approach was again shown.
Download or read book Mechanics of Fiber and Textile Reinforced Cement Composites written by Barzin Mobasher and published by CRC Press. This book was released on 2011-09-20 with total page 473 pages. Available in PDF, EPUB and Kindle. Book excerpt: Among all building materials, concrete is the most commonly used-and there is a staggering demand for it. However, as we strive to build taller structures with improved seismic resistance or durable pavement with an indefinite service life, we require materials with better performance than the conventional materials used today. Considering the enor
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1996 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Woven Fabric Composites written by Niranjan K. Naik and published by CRC Press. This book was released on 1993-11-27 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is presented as an analytical methodology developed to study the thermo-elastic behavior of woven fabric composites. Also, experimental studies on the failure behavior of woven fabric composites are presented.
Download or read book Proceedings of the American Society for Composites 2014 Twenty ninth Technical Conference on Composite Materials written by Hyonny Kim and published by DEStech Publications, Inc. This book was released on 2014-09-17 with total page 3583 pages. Available in PDF, EPUB and Kindle. Book excerpt: New and not previously published U.S. and international research on composite and nanocomposite materialsFocus on health monitoring/diagnosis, multifunctionality, self-healing, crashworthiness, integrated computational materials engineering (ICME), and moreApplications to aircraft, armor, bridges, ships, and civil structures This fully searchable CD-ROM contains 270 original research papers on all phases of composite materials, presented by specialists from universities, NASA and private corporations such as Boeing. The document is divided into the following sections: Aviation Safety and Aircraft Structures; Armor and Protection; Multifunctional Composites; Effects of Defects; Out of Autoclave Processing; Sustainable Processing; Design and Manufacturing; Stability and Postbuckling; Crashworthiness; Impact and Dynamic Response; Natural, Biobased and Green; Integrated Computational Materials Engineering (ICME); Structural Optimization; Uncertainty Quantification; NDE and SHM Monitoring; Progressive Damage Modeling; Molecular Modeling; Marine Composites; Simulation Tools; Interlaminar Properties; Civil Structures; Textiles. The CD-ROM displays figures and illustrations in articles in full color along with a title screen and main menu screen. Each user can link to all papers from the Table of Contents and Author Index and also link to papers and front matter by using the global bookmarks which allow navigation of the entire CD-ROM from every article. Search features on the CD-ROM can be by full text including all key words, article title, author name, and session title. The CD-ROM has Autorun feature for Windows 2000 or higher products and can also be used with Macintosh computers. The CD includes the program for Adobe Acrobat Reader with Search 11.0. One year of technical support is included with your purchase of this product.
Download or read book Impact Response and Dynamic Failure of Composites and Laminate Materials written by Jang Kyo Kim and published by Trans Tech Publications Ltd. This book was released on 1997-09-04 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt: In many engineering applications of composite and laminate materials, damage and failure can be caused by impact of various types. Low-velocity impact is potentially dangerous because it can produce extensive sub-surface delamination that may not be visible on the surface. High-velocity impact produced by projectiles, shock waves and fragments from exploding ammunition is a highly dynamic event, leading to the penetration or perforation of composites. All impact damage is detrimental to the mechanical and structural performance of composites. Accurate evaluation of the damaged state, and a fundamental understanding of the effect of damage upon the resultant properties are therefore essential for the proper design and application of composite materials. The strain-rate dependence of material behavior, fracture propagation and energy-absorbing capacity are also of paramount importance from both the materials science and structural mechanics perspectives.
Download or read book Impact Studies of Composite Materials written by Mohamed Thariq Hameed Sultan and published by Springer Nature. This book was released on 2021-05-22 with total page 217 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses the impact of different range of velocities (low, high, ballistic and hyper-velocity impact) on composites. Presented through experimental and numerical analysis, the book goes beyond impact event analysis and also covers the after-impact phenomena, including flexural and compression and damage analysis through destructive and non-destructive evaluations. The analyses presented from either experimental or numerical simulations are composed of micro and macrographs images, illustrations, tables and figures with inclusive discussions and supportive evidences from recent studies on composites. This book also highlights the potential applications of composites through the lens of their impact properties, in different industries such as automotive and defence applications. Generally, this book benefits wider range of readers including the industrial practitioners, researchers, lecturer and students, who are working in the fields related to impact and damage analysis, including the structural health monitoring of composites, either experimentally or numerically.
Download or read book Proceedings of the ASME Textile Engineering Division 2002 written by American Society of Mechanical Engineers. Textile Engineering Division and published by . This book was released on 2002 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Papers from a November 2002 meeting report on innovations for the changing textile industry, textile composites, and theories and modeling in textile engineering. Some specific topics include production and characterization of yarns and fabrics utilizing turkey feather fibers, mechanical properties of square braided fabric, deformation fields in woven composite plates under impact, mechanical properties of carbon nanotubes, and nonlinear deformation of woven fabrics. There is no subject index. Annotation (c)2003 Book News, Inc., Portland, OR (booknews.com).
