Compression-Compression Fatigue of a Stitched Uniwoven Graphite/Epoxy Composite PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Compression-Compression Fatigue of a Stitched Uniwoven Graphite/Epoxy Composite PDF full book. Access full book title Compression-Compression Fatigue of a Stitched Uniwoven Graphite/Epoxy Composite by JE. Masters. Download full books in PDF and EPUB format.
Author: JE. Masters
Publisher:
ISBN:
Category : Composite materials
Languages : en
Pages : 20
Get Book Here
Book Description
Stitched uniwoven graphite/epoxy laminates show great promise as a damage-tolerant composite material which is easily fabricated into large net-shaped parts and structures. They also offer the potential of being less costly than other damage-tolerant systems such as toughened matrix composites. Work to date with stitched uniweaves has included evaluations of static properties and damage tolerance as measured by impact resistance, compression after impact, and delamination propagation [1-7]. This paper focuses on experimental characterization of the fatigue response of stitched uniweave composite materials.
Author: JE. Masters
Publisher:
ISBN:
Category : Composite materials
Languages : en
Pages : 20
Get Book Here
Book Description
Stitched uniwoven graphite/epoxy laminates show great promise as a damage-tolerant composite material which is easily fabricated into large net-shaped parts and structures. They also offer the potential of being less costly than other damage-tolerant systems such as toughened matrix composites. Work to date with stitched uniweaves has included evaluations of static properties and damage tolerance as measured by impact resistance, compression after impact, and delamination propagation [1-7]. This paper focuses on experimental characterization of the fatigue response of stitched uniweave composite materials.
Author: Scott E. Groves
Publisher: ASTM International
ISBN: 0803114990
Category : Composite materials
Languages : en
Pages : 372
Get Book Here
Book Description
Author: Nancy E. Vandermey
Publisher:
ISBN:
Category : Composite materials
Languages : en
Pages : 228
Get Book Here
Book Description
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722981457
Category :
Languages : en
Pages : 126
Get Book Here
Book Description
Damage initiation and growth under compression-compression fatigue loading were investigated for a stitched uniweave material system with an underlying AS4/3501-6 quasi-isotropic layup. Performance of unnotched specimens having stitch rows at either 0 degree or 90 degrees to the loading direction was compared. Special attention was given to the effects of stitching related manufacturing defects. Damage evaluation techniques included edge replication, stiffness monitoring, x-ray radiography, residual compressive strength, and laminate sectioning. It was found that the manufacturing defect of inclined stitches had the greatest adverse effect on material performance. Zero degree and 90 degree specimen performances were generally the same. While the stitches were the source of damage initiation, they also slowed damage propagation both along the length and across the width and affected through-the-thickness damage growth. A pinched layer zone formed by the stitches particularly affected damage initiation and growth. The compressive failure mode was transverse shear for all specimens, both in static compression and fatigue cycling effects. Vandermey, Nancy E. and Morris, Don H. and Masters, John E. Unspecified Center COMPRESSIBILITY; COMPRESSIVE STRENGTH; CRACK INITIATION; CRACK PROPAGATION; DAMAGE; DEFECTS; FAILURE MODES; GRAPHITE-EPOXY COMPOSITES; LAMINATES; RESIDUAL STRENGTH; TEXTILES; WEAVING; CYCLES; DAMAGE ASSESSMENT; HAZARDS; LAY-UP; MANUFACTURING; RADIOGRAPHY; STIFFNESS; X RAYS...
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 542
Get Book Here
Book Description
Author: Marvin B. Dow
Publisher:
ISBN:
Category :
Languages : en
Pages : 88
Get Book Here
Book Description
Author: K.S. Ravichandran
Publisher: Elsevier
ISBN: 0080569706
Category : Technology & Engineering
Languages : en
Pages : 511
Get Book Here
Book Description
This book contains the fully peer-reviewed papers presented at the Third Engineering Foundation Conference on Small Fatigue Cracks, held under the chairmanship of K.S. Ravichandran and Y. Murakami during December 6-11, 1998, at the Turtle Bay Hilton, Oahu, Hawaii. This book presents a state-of-the-art description of the mechanics, mechanisms and applications of small fatigue cracks by most of the world's leading experts in this field. Topics ranging from the mechanisms of crack initiation, small crack behavior in metallic, intermetallic, ceramic and composite materials, experimental measurement, mechanistic and theoretical models, to the role of small cracks in fretting fatigue and the application of small crack results to the aging aircraft and high-cycle fatigue problems, are covered.
Author: L. Tong
Publisher: Elsevier
ISBN: 0080525822
Category : Technology & Engineering
Languages : en
Pages : 255
Get Book Here
Book Description
Fibre reinforced polymer (FRP) composites are used in almost every type of advanced engineering structure, with their usage ranging from aircraft, helicopters and spacecraft through to boats, ships and offshore platforms and to automobiles, sports goods, chemical processing equipment and civil infrastructure such as bridges and buildlings. The usage of FRP composites continues to grow at an impessive rate as these materials are used more in their existing markets and become established in relatively new markets such as biomedical devices and civil structures. A key factor driving the increased applications of composites over the recent years is the development of new advanced forms of FRP materials. This includes developments in high performance resin systems and new styles of reinforcement, such as carbon nanotubes and nanoparticles. This book provides an up-to-date account of the fabrication, mechanical properties, delamination resistance, impact tolerance and applications of 3D FRP composites. The book focuses on 3D composites made using the textile technologies of weaving, braiding, knitting and stiching as well as by z-pinning.
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1768
Get Book Here
Book Description
Author: EG. Dusablon
Publisher:
ISBN:
Category : Anisotropic
Languages : en
Pages : 26
Get Book Here
Book Description
This study assesses the static compression and R=10 compression-compression fatigue properties of graphite/epoxy composites with ply drop-off discontinuities under severe operating environments, including room-temperature dry and wet, -65°F wet, and 218°F dry and wet. In 30-ply [(±45)5/016/904]C laminates two 0-deg plies or four 45-deg plies are dropped off, symmetrically, in the middle one third of the specimen thickness. Static strength and moduli of elasticity are unaffected by these discontinuities; however, some proportional limit values and Poisson's ratio values are significantly changed. At 1.25 x 106 cycles of constant frequency and amplitude fatigue, the algebraic minimum endurance limit stress level is degraded 15 to 30 percent by the two 0-deg ply drop-offs, but only 0 to 13 percent by the four 45-deg ply drop-offs, or is even increased somewhat. The endurance limits of the surviving specimens are lower than their residual strengths, which vary directly with maximum applied cyclic compressive stress up to a threshold level. Detailed data tables and plots are included.
