Cryogenic Temperature Effects on the Mechanical Properties of Carbon, Aramid, and PBO Fibers

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (526 download)

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Book Synopsis Cryogenic Temperature Effects on the Mechanical Properties of Carbon, Aramid, and PBO Fibers by : William Chad Hastings

Download or read book Cryogenic Temperature Effects on the Mechanical Properties of Carbon, Aramid, and PBO Fibers written by William Chad Hastings and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examines the effects of cryogenic temperatures on the mechanical properties of carbon, aramid, and poly(p-phenylene-2, 6-benzobisoxazole) (PBO) fibers. Although the mechanical properties are documented for these fibers at ambient and elevated temperatures, there is an absence of data in the open literature for how these fibers behave at very low temperatures. To evaluate the mechanical properties, the ASTM standard method for testing at ambient temperature was used as a baseline. The low temperature tests were conducted inside a double walled cryogenic chamber to evaluate the fiber performance at 100K. Fiber properties at low temperatures displayed differences from room temperature properties in the form of increased ultimate tensile strength (UTS), decreased in elongation to failure, and increased Young's Modulus. The change in properties due to the effect of temperature was more pronounced in fibers with a higher degree of crystallinity.

CRYOGENIC TEMPERATURE EFFECTS ON THE MECHANICAL PROPERTIES OF CARBON, ARAMID, AND PBO FIBERS.

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

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Book Synopsis CRYOGENIC TEMPERATURE EFFECTS ON THE MECHANICAL PROPERTIES OF CARBON, ARAMID, AND PBO FIBERS. by :

Download or read book CRYOGENIC TEMPERATURE EFFECTS ON THE MECHANICAL PROPERTIES OF CARBON, ARAMID, AND PBO FIBERS. written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study examines the effects of cryogenic temperatures on the mechanical properties of carbon, aramid, and poly(p-phenylene-2, 6-benzobisoxazole) (PBO) fibers. Although the mechanical properties are documented for these fibers at ambient and elevated temperatures, there is an absence of data in the open literature for how these fibers behave at very low temperatures. To evaluate the mechanical properties, the ASTM standard method for testing at ambient temperature was used as a baseline. The low temperature tests were conducted inside a double walled cryogenic chamber to evaluate the fiber performance at 100K. Fiber properties at low temperatures displayed differences from room temperature properties in the form of increased ultimate tensile strength (UTS), decreased in elongation to failure, and increased Youngs Modulus. The change in properties due to the effect of temperature was more pronounced in fibers with a higher degree of crystallinity.

Low Temperature Mechanical Testing of Carbon-Fiber/Epoxy-Resin Composite Materials

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ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Low Temperature Mechanical Testing of Carbon-Fiber/Epoxy-Resin Composite Materials by : Alan T. Nettles

Download or read book Low Temperature Mechanical Testing of Carbon-Fiber/Epoxy-Resin Composite Materials written by Alan T. Nettles and published by . This book was released on 1996 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Applied Mechanics Reviews

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ISBN 13 :
Total Pages : 776 pages
Book Rating : 4.3/5 (243 download)

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Book Synopsis Applied Mechanics Reviews by :

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 2000 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Carbon Fibers

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Publisher : CRC Press
ISBN 13 : 1482285398
Total Pages : 584 pages
Book Rating : 4.4/5 (822 download)

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Book Synopsis Carbon Fibers by : Jean-Baptiste Donnet

Download or read book Carbon Fibers written by Jean-Baptiste Donnet and published by CRC Press. This book was released on 1998-03-19 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Third Edition offers the latest information on the structural, surface, mechanical, electronic, thermal, and magnetic properties of carbon fibers as well as their manufacture and industrial applications from many of the world's most distinguished specialists in the field. "

The Effect of Low Melt Temperature on Mechanical Properties of Peek/carbon Composites

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ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (355 download)

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Book Synopsis The Effect of Low Melt Temperature on Mechanical Properties of Peek/carbon Composites by : X. R. Xiao

Download or read book The Effect of Low Melt Temperature on Mechanical Properties of Peek/carbon Composites written by X. R. Xiao and published by . This book was released on 1993 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Structures Strengthened with Bonded Composites

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Publisher : Woodhead Publishing
ISBN 13 : 0128210893
Total Pages : 558 pages
Book Rating : 4.1/5 (282 download)

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Book Synopsis Structures Strengthened with Bonded Composites by : Zhishen Wu

Download or read book Structures Strengthened with Bonded Composites written by Zhishen Wu and published by Woodhead Publishing. This book was released on 2020-07-15 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structures Strengthened with Bonded Composites presents a comprehensive resource on the strengthening of concrete, reinforced and prestressed concrete, masonry, steel and other composite structures using externally-bonded FRP composites. The book emphasizes a systematic and fundamental investigation on bonding and debonding behavior of the FRP-concrete interface and structural performances of FRP-strengthened structures with a combination of experimental, theoretical and numerical studies. This book will appeal to all those concerned with strengthening and retrofitting of existing structures from the effect of additional anticipated loads in the civil sector. - Discusses the FRP strengthening of different types of structures, including bridges, tunnels, buildings, historic structures and underwater constructions - Establishes a systematic theory on interfacial fracture mechanics and clarifies different debonding mechanisms - Describes design methods and makes comparison of design considerations and methods among different countries - Presents temperature and fatigue effects and long-term behavior for different strengthening methods

Polymer Matrix Wave-Transparent Composites

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Publisher : John Wiley & Sons
ISBN 13 : 3527350993
Total Pages : 309 pages
Book Rating : 4.5/5 (273 download)

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Book Synopsis Polymer Matrix Wave-Transparent Composites by : Junwei Gu

Download or read book Polymer Matrix Wave-Transparent Composites written by Junwei Gu and published by John Wiley & Sons. This book was released on 2024-04-22 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer Matrix Wave-Transparent Composites One-stop reference on important recent research accomplishments in the field of polymer matrix wave-transparent composites Polymer Matrix Wave-Transparent Composites: Materials, Properties, and Applications is a unique book that focuses on polymer matrix wave-transparent composites for electromagnetic wave transmission of a certain frequency, discussing various aspects of design, fabrication, structure, properties, measurement methods, and mechanisms, along with practical applications of functional polymer composites in industrial fields ranging from aircraft radomes, to radomes for ground, shipborne, and airborne purposes, to radomes for 5G communication, to printed circuit boards and beyond. Edited by four highly qualified academics and contributed to by well-known experts in the field, Polymer Matrix Wave-Transparent Composites includes detailed discussion on sample topics such as: Interface between the reinforced fiber and polymer matrix, including basic concepts, characterization, and the most common method of functionalization for the interface Mechanism of wave-transparent, factors that influence wave-transparent performance, and fabrication techniques Processes of hand paste molding, pressure bag molding, laminated molding, resin transfer molding (RTM), and winding molding Physical and chemical properties of the inorganic fibers (glass fibers and quartz fibers) and organic fibers (aramid fibers, ultra-high molecular weight polyethylene fibers and poly-p-phenylene benzobisoxazole fibers) Polymer Matrix Wave-Transparent Composites is an essential reference on the latest research in the field for researchers and related professionals, as well as for individuals who are not familiar with the field and wish to gain a holistic understanding in one place.

Low Temperature Mechanical Testing of Carbon-Fiber/Epoxy-Resin Composite Materials

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Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781722347437
Total Pages : 34 pages
Book Rating : 4.3/5 (474 download)

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Book Synopsis Low Temperature Mechanical Testing of Carbon-Fiber/Epoxy-Resin Composite Materials by : National Aeronautics and Space Administration (NASA)

Download or read book Low Temperature Mechanical Testing of Carbon-Fiber/Epoxy-Resin Composite Materials written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-05 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of cryogenic fuels (liquid oxygen and liquid hydrogen) in current space transportation vehicles, in combination with the proposed use of composite materials in such applications, requires an understanding of how such materials behave at cryogenic temperatures. In this investigation, tensile intralaminar shear tests were performed at room, dry ice, and liquid nitrogen temperatures to evaluate the effect of temperature on the mechanical response of the IM7/8551-7 carbon-fiber/epoxy-resin system. Quasi-isotropic lay-ups were also tested to represent a more realistic lay-up. It was found that the matrix became both increasingly resistant to microcracking and stiffer with decreasing temperature. A marginal increase in matrix shear strength with decreasing temperature was also observed. Temperature did not appear to affect the integrity of the fiber-matrix bond. Nettles, Alan T. and Biss, Emily J. Marshall Space Flight Center ...

EFFECTS OF TEMPERATURE AND ENVIRONMENT ON MECHANICAL PROPERTIES OF TWO CONTINUOUS CARBON-FIBER AUTOMOTIVE STRUCTURAL COMPOSITES.

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (316 download)

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Book Synopsis EFFECTS OF TEMPERATURE AND ENVIRONMENT ON MECHANICAL PROPERTIES OF TWO CONTINUOUS CARBON-FIBER AUTOMOTIVE STRUCTURAL COMPOSITES. by : M. B. Ruggles-Wrenn

Download or read book EFFECTS OF TEMPERATURE AND ENVIRONMENT ON MECHANICAL PROPERTIES OF TWO CONTINUOUS CARBON-FIBER AUTOMOTIVE STRUCTURAL COMPOSITES. written by M. B. Ruggles-Wrenn and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Durability of Carbon-Fiber Composites Project was established at Oak Ridge National Laboratory (ORNL) by the U.S. Department of Energy to develop experimentally based, durability-driven design guidelines to assure the long-term (15-year) structural integrity of carbon-fiber-based composite systems for automotive structural applications. The project addressed characterization and modeling the durability of a progression of carbon-reinforced thermoset materials, each of which has the same urethane matrix. The primary purpose of this report is to provide the individual specimen test data. Basic mechanical property testing and results for a reference [{+-}45{sup o}]{sub 3S} crossply composite and a quasi-isotropic, [0/90{sup o}/{+-}45{sup o}]{sub S} version of the reference crossply are provided. The matrix and individual {+-}45{sup o} stitch-bonded mats are the same in both cases. Although the composite utilized aerospace-grade carbon-fiber reinforcement, it was made by a rapid-molding process suitable for high-volume automotive use. Behavioral trends, effects of temperature and environment, and corresponding design knockdown factors are established for both materials. The reference crossply is highly anisotropic with two dominant fiber orientations--0/90{sup o} and {+-}45{sup o}. Therefore properties were developed for both orientations.

Principles of Composite Material Mechanics

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Publisher : CRC Press
ISBN 13 : 1498788246
Total Pages : 660 pages
Book Rating : 4.4/5 (987 download)

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Book Synopsis Principles of Composite Material Mechanics by : Ronald F. Gibson

Download or read book Principles of Composite Material Mechanics written by Ronald F. Gibson and published by CRC Press. This book was released on 2016-02-10 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Principles of Composite Material Mechanics covers a unique blend of classical and contemporary mechanics of composites technologies. It presents analytical approaches ranging from the elementary mechanics of materials to more advanced elasticity and finite element numerical methods, discusses novel materials such as nanocomposites and hybrid multis

Effects of Extreme Low Temperature on Composite Materials

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (565 download)

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Book Synopsis Effects of Extreme Low Temperature on Composite Materials by : Sridevi Kichhannagari

Download or read book Effects of Extreme Low Temperature on Composite Materials written by Sridevi Kichhannagari and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis discusses the effect of cryogenic temperatures on composite materials. The work includes estimating the shear strength of carbon/epoxy and glass/polyester composites at low temperatures and finding the rate of generation of microcracks in composites at cryogenic temperatures by acoustic emission technique. Microcracks increase the permeability of composites. So to study the permeability growth with microcracks, equipment is also designed to measure the permeability of composite to low temperature fluids. With short beam shear testing it was observed that the shear strength of composites increases with decreasing temperatures. Also carbon/epoxy composites were found to be much stronger than glass/polyester composites. Cryogenic temperatures improve the strength of composites but also generate microcracks in the structure due to the thermal expansion mismatch between the matrix and fiber. With acoustic emission testing from room to 6150ðC, it was found that the rate of generation of microcracks increases with reducing temperatures. The work is extended to design a permeability equipment.

Mechanical Properties of Carbon Fibre Reinforced Thermoplastics for Cryogenic Applications

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (758 download)

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Book Synopsis Mechanical Properties of Carbon Fibre Reinforced Thermoplastics for Cryogenic Applications by : K. Ahlborn

Download or read book Mechanical Properties of Carbon Fibre Reinforced Thermoplastics for Cryogenic Applications written by K. Ahlborn and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advances in Engineering Design

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Publisher : Springer
ISBN 13 : 9811364699
Total Pages : 799 pages
Book Rating : 4.8/5 (113 download)

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Book Synopsis Advances in Engineering Design by : Anamika Prasad

Download or read book Advances in Engineering Design written by Anamika Prasad and published by Springer. This book was released on 2019-04-27 with total page 799 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents select proceedings of the International Conference on Future Learning Aspects of Mechanical Engineering (FLAME 2018). The book covers mechanical design areas such as computational mechanics, finite element modeling, computer aided designing, tribology, fracture mechanics, and vibration. The book brings together different aspects of engineering design, and will be useful for researchers and professionals working in this field.

On the Oxidative Ablation and Mechanical Properties of T300 Carbon Fibers at Elevated Temperatures

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ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis On the Oxidative Ablation and Mechanical Properties of T300 Carbon Fibers at Elevated Temperatures by : Leibo Liu

Download or read book On the Oxidative Ablation and Mechanical Properties of T300 Carbon Fibers at Elevated Temperatures written by Leibo Liu and published by . This book was released on 2018 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon fibers are the main component and load carrier within many high-temperature composites. Oxidative ablation of carbon fibers is the main failure mechanism of high-temperature composites and significantly affects the mechanical properties of the composites. The effects of the ablation of carbon fiber at high temperatures on carbon fiber mechanical properties, nevertheless, have not been systematically studied in the available literature. In the present investigation, the oxidative ablation behavior of carbon fibers from room temperature to 900°C has been systematically investigated by employing a thermogravimetric analyzer and in situ video detection. Detectable carbon fiber weight loss was initiated when the temperature was elevated to 600°C within the air environment. The video images showed that the color of the carbon fiber surfaces changed dramatically and then the fibers disappeared gradually, indicating that the carbon fibers underwent a chemical reaction, i.e., oxidative ablation. The static mechanical strength of carbon fiber at various temperatures was investigated and was found to start decreasing significantly at temperatures above 500°C, even though no obvious oxidative ablation occurred. X-ray photoelectron spectroscopy (XPS) and Raman spectrum reveal that the microstructure transition from graphite to nongraphite carbon is the main reason for strength reduction.

Mechanical Properties of Long Carbon Fiber Reinforced Thermoplastic (LFT) at Elevated Temperature

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Publisher :
ISBN 13 :
Total Pages : 64 pages
Book Rating : 4.:/5 (849 download)

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Book Synopsis Mechanical Properties of Long Carbon Fiber Reinforced Thermoplastic (LFT) at Elevated Temperature by : Qiushi Wang

Download or read book Mechanical Properties of Long Carbon Fiber Reinforced Thermoplastic (LFT) at Elevated Temperature written by Qiushi Wang and published by . This book was released on 2012 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Long fiber reinforced thermoplastics (LFT) possess high specific modulus and strength, superior damage tolerance and fracture toughness and have found increasing use in transportation, military, and aerospace applications. However, one of the impediments to utilizing these materials is the lack of performance data in harsh conditions, especially at elevated temperature. In order to quantify the effect of temperature on the mechanical properties of carbon fiber reinforced thermoplastic composites, carbon fiber PAA composite plates containing 20% and 30% carbon fiber were produced using extrusion/compression molding process and tested at three representative temperatures, room temperature (RT 26°C), middle temperature (MID 60°C) and glass transition temperature (T[subscript g] 0°C). A heating chamber was designed and fabricated for the testing at elevated temperature. As temperature increases, flexural modulus, flexural strength, tensile modulus and tensile strength decrease. The highest reduction observed in stiffness (modulus) values of 30% CF/PAA at T[subscript g] in the 0° orientation is 75%. The reduction values were larger for the transverse (perpendicular to flow direction) samples than the longitudinal (flow direction) samples. The property reduction in 30% CF/PAA is larger than 20% CF/PAA. Furthermore, an innovative method was developed to calculate the fiber content in carbon fiber reinforced composites by burning off the neat resin and sample in a tube furnace. This method was proved to be accurate (within 1.5 wt. % deviation) by using burning off data obtained from CF/Epoxy and CF/Vinyl Ester samples. 20% and 30% carbon/PAA samples were burned off and carbon fiber content was obtained using this method. The results of the present study will be helpful in determining the end-user applications of these composite materials.

Layout Essentials

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Publisher : Fair Winds Press
ISBN 13 : 1592537073
Total Pages : 209 pages
Book Rating : 4.5/5 (925 download)

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Book Synopsis Layout Essentials by : Beth Tondreau

Download or read book Layout Essentials written by Beth Tondreau and published by Fair Winds Press. This book was released on 2011-06 with total page 209 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book outlines and demonstrates basic layout/grid guidelines and rules.