Investigation of fatigue behavior of a graphite/epoxy composite

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ISBN 13 :
Total Pages : 30 pages
Book Rating : 4.:/5 (127 download)

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Book Synopsis Investigation of fatigue behavior of a graphite/epoxy composite by : Francis T. Alim

Download or read book Investigation of fatigue behavior of a graphite/epoxy composite written by Francis T. Alim and published by . This book was released on 1991 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Effect of Moisture on the Fatigue Behavior of Graphite/epoxy Composite Laminates

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Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis Effect of Moisture on the Fatigue Behavior of Graphite/epoxy Composite Laminates by :

Download or read book Effect of Moisture on the Fatigue Behavior of Graphite/epoxy Composite Laminates written by and published by . This book was released on 1979 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fatigue of Composite Materials

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Publisher : DEStech Publications, Inc
ISBN 13 : 1605950858
Total Pages : 245 pages
Book Rating : 4.6/5 (59 download)

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Book Synopsis Fatigue of Composite Materials by : Ronald F. Gibson

Download or read book Fatigue of Composite Materials written by Ronald F. Gibson and published by DEStech Publications, Inc. This book was released on 2013 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents investigations into fatigue in composite materials and structures. Sections include: research into aspects of fatigue modeling including prediction of fatigue life, fatigue strength and fatigue crack growth rate; experimental characterization of fatigue in composites, and discussing fatigue behavior of fullscale composite structures.

Off-Axis Fatigue of Graphite/Epoxy Composite

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Publisher :
ISBN 13 :
Total Pages : 31 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Off-Axis Fatigue of Graphite/Epoxy Composite by : J. Awerbuch

Download or read book Off-Axis Fatigue of Graphite/Epoxy Composite written by J. Awerbuch and published by . This book was released on 1981 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Off-axis static and fatigue behavior of AS/3501-5A graphite/epoxy was studied in an effort to characterize the matrix/interface-controlled failure. Seven different off-axis angles were tested: 0, 10, 20, 30, 45, 60, and 90 deg. Initial (static) and post-fatigue residual strength were obtained together with S-N relationships. Fracture surfaces were examined through photomicrographs and stereo (three-dimensional) scanning electron microscope (SEM) photographs, in order to delineate failure modes, and the results of these inspections are discussed. The off-axis static strength, including scatter, was fully characterized by a polynomial and a nondimensional strength parameter. Essentially, no strength or modulus degradation was observed in the specimens surviving fatigue loading of 106 cycles regardless of the off-axis angle or fatigue stress level. When fatigue stress level is normalized with respect to static strength, all data seem to fall on the same S-N curve. Fatigue failure occurred without any warning or visible damage. Matrix failure characteristics vary with off-axis angle and appear in the form of serrations and axial and transverse cracks. Large scatter in life was observed at all off-axis angles; however, since the number of specimens employed in the present study is not sufficient to provide meaningful statistical S-N data, a more detailed investigation of the off-axis (and angle ply) behavior of graphite/epoxy composites is warranted.

Fatigue Behavior of Graphite/epoxy Plates Under Shear Buckling

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Publisher :
ISBN 13 :
Total Pages : 184 pages
Book Rating : 4.:/5 (12 download)

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Book Synopsis Fatigue Behavior of Graphite/epoxy Plates Under Shear Buckling by : Willard Alan Marquis

Download or read book Fatigue Behavior of Graphite/epoxy Plates Under Shear Buckling written by Willard Alan Marquis and published by . This book was released on 1982 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation of the behavior of graphite/epoxy composite plates under a shear loading condition has been performed. The region above the critical buckling load was of particular interest. Both the static and fatigue behavior of post-buckled plates was studied. Following an existing design, a special test frame has been constructed which applies this shear loading to a 200mm square test area. A comparison between the experimental and theoretical critical buckling load shows good agreement for the laminated plate analysis static failure occurred at about four times the buckling load. The modes of failure are.discussed. Fatigue tests were also conducted, but they were merely of a preliminary nature. A more comprehensive study would be valuable. To this end, suggestions are made for improvement of the frame design and operation.

Fatigue Behavior of Graphite Composites

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Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Fatigue Behavior of Graphite Composites by :

Download or read book Fatigue Behavior of Graphite Composites written by and published by . This book was released on 1972 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this report is to improve the material performance of a graphite/epoxy prepreg composite with particular relevence to its fatigue performance. Fatigue strength and resistance to fatigue damage of Modmor II/ Narmco 5206 composite were improved by interleaving the composite prepreg laminate with glass scrim cloth. Cantilever beam specimens of two fiber orientations were tested under uniform stress fatigue and sequential block loading. Flexural strength studies and the effects of ambient aging of composites on their elevated temperature properties are reported. Besides ambient aging the investigation also included accelerated aging tests on laminates of two different fiber orientations with and without interleaving of scrim cloth. Improvement in the mechanical behavior of graphite/epoxy prepreg composite was obtained with the addition of glass scrim cloth.

Fatigue of Composite Materials

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Publisher : CRC Press
ISBN 13 :
Total Pages : 202 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Fatigue of Composite Materials by : R. Talreja

Download or read book Fatigue of Composite Materials written by R. Talreja and published by CRC Press. This book was released on 1987 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue in Composites provides extensive contemporary research on fatigue from internationally recognized researchers. Part I introduces the concept, delivering a historical review of the fatigue behavior of fibre-reinforced plastics and illustrating fatigue test methods and fatigue under multiaxial stress systems. Part II reviews current research on micromechanical aspects, emphasizing long-term behavior, interface performance, delamination and damage accumulation. Part III covers the analysis and testing of fatigue behavior. Part IV details physical , micromechanical, computational, statistical, and life-prediction models for constant and variable stress. The final sections offer an overview of the wide range of composite fatigue-related problems experienced by engineers.

An Investigation of Fatigue Behavior of Reinforced Plastics for Primary Aircraft Structures

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Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.:/5 (219 download)

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Book Synopsis An Investigation of Fatigue Behavior of Reinforced Plastics for Primary Aircraft Structures by : Kenneth E. Hofer

Download or read book An Investigation of Fatigue Behavior of Reinforced Plastics for Primary Aircraft Structures written by Kenneth E. Hofer and published by . This book was released on 1969 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three aspects of the fatigue of reinforced plastic composite materials were examined in detail. Included were: a study of cumulative fatigue damage mechanisms and analysis for several composite materials; a study of the effect of a complex cyclic high temperature and high humidity on fatigue life; and determination of the influence of fiber orientation and matrix on the fatigue life of composites. (Author).

Fatigue Behavior of Graphite/Glass/Epoxy Composites

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Publisher :
ISBN 13 :
Total Pages : 143 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Fatigue Behavior of Graphite/Glass/Epoxy Composites by :

Download or read book Fatigue Behavior of Graphite/Glass/Epoxy Composites written by and published by . This book was released on 1973 with total page 143 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advanced composite materials possess characteristics of stiffness and strength which are most desirable for advanced naval aircraft. Glass composite materials, on the other hand, possess the equally desirable characteristic of low cost. The appropriate combination of these many features can be obtained by a suitable blending of the two or more composite materials. Technically, the blending of two or more fiber types in a laminate, can be achieved by (1) mixing the fibers in the tow or roving, (2) intra-ply mixing of glass rovings with graphite tows or, (3) interleaving or interply mixing of two separate fibrous prepreg systems or any combination of the above. There are additional economic advantages to the third approach where prepreg tapes with a common resin system are prepared for two separate fibers: glass and graphite. For this reason the third approach was selected for some further study particularly with regard to the fatigue performance and its relative behavior to prior studies of the separate composites. The specific objective of the program was to utilize a commercially available glass and a commercially available high strength and high modulus graphite with a common epoxy matrix to maximize the technical performance of the hybrid composite in fatigue applications. (KAR) p. 11.

Fatigue Behavior of a Quasi-Isotropic Graphite/Epoxy Laminate Embedded with a Piezoelectric Sensor

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Publisher :
ISBN 13 : 9781423566540
Total Pages : 151 pages
Book Rating : 4.5/5 (665 download)

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Book Synopsis Fatigue Behavior of a Quasi-Isotropic Graphite/Epoxy Laminate Embedded with a Piezoelectric Sensor by : Jon M. Coleman

Download or read book Fatigue Behavior of a Quasi-Isotropic Graphite/Epoxy Laminate Embedded with a Piezoelectric Sensor written by Jon M. Coleman and published by . This book was released on 1997-12-01 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study primarily investigated the mechanical effects of embedding piezoelectric sensors on the tensile and fatigue strength of a quasi-isotropic, carbon-epoxy laminate. A secondary focus was the investigation of the sensor degradation under tensile loading. A O\+/-45\90s laminate was fabricated from Hercules AS4/3501-6 pre-preg tape. Specimens were first tested monotonically to obtain an average ultimate tensile strength and to detail the progression of damage. The fatigue tests were tension-tension, R=0.1, 10 Hz, constant amplitude. Results indicated that the embedded piezoelectric sensors did not have a significant effect on the tensile strength of the laminate. Specimens with embedded sensors showed a more extensive decrease in stiffness, but a lesser degree of overall delamination due to edge effects. The embedded sensors functioned consistently at the manufacturer suggested operational range, but degraded rapidly thereafter.

Fatigue Behavior of Composites Under Different Loading Modes

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Publisher :
ISBN 13 :
Total Pages : 21 pages
Book Rating : 4.:/5 (125 download)

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Book Synopsis Fatigue Behavior of Composites Under Different Loading Modes by : DF. Sims

Download or read book Fatigue Behavior of Composites Under Different Loading Modes written by DF. Sims and published by . This book was released on 1977 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fatigue characteristics of S-glass/epoxy (Scoth-ply SP-250-SF1) and graphite/epoxy (Rigidite 5209-T300) laminates were studied for tension and shear loading. Emphasis was placed on fiber orientations where the matrix contribution to fatigue strength is significant. A general regression curve was used for data analysis, and a two-parameter Weibull model was used for reliability studies. An existing plane-stress macroscopic failure theory for static strength was extended to predict fatigue strength. It was found that the fatigue failure theory provides a conservative approach to first-ply failure which should be useful for preliminary design of composite structures.

Effect of High Load on the Fatigue Behavior of Unnotched Graphite/Epoxy Laminates

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Publisher :
ISBN 13 :
Total Pages : 53 pages
Book Rating : 4.:/5 (227 download)

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Book Synopsis Effect of High Load on the Fatigue Behavior of Unnotched Graphite/Epoxy Laminates by : C. T. Sun

Download or read book Effect of High Load on the Fatigue Behavior of Unnotched Graphite/Epoxy Laminates written by C. T. Sun and published by . This book was released on 1978 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this research program is to verify experimentally the theoretical prediction for the effect of the high load on the fatigue behavior of unnotched composite laminates. A three-parameter fatigue and residual strength degradation model has been used to derive the number of load cycles a specimen can survive and the statistical distributions of the fatigue life and the residual strength after the specimen has survived an initial high load or periodic high loads. One set of the static ultimate strength data and one set of the fatigue scan data were generated to determine the three-parameter values appearing in the theoretical model.

A Temperature Dependent Fatigue Failure Criterion for Graphite/epoxy Laminates

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Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (317 download)

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Book Synopsis A Temperature Dependent Fatigue Failure Criterion for Graphite/epoxy Laminates by :

Download or read book A Temperature Dependent Fatigue Failure Criterion for Graphite/epoxy Laminates written by and published by . This book was released on 1978 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Composite Materials

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Publisher : ASTM International
ISBN 13 : 0803126093
Total Pages : 315 pages
Book Rating : 4.8/5 (31 download)

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Book Synopsis Composite Materials by : Ronald B. Bucinell

Download or read book Composite Materials written by Ronald B. Bucinell and published by ASTM International. This book was released on 1998 with total page 315 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Ultrasonic Attenuation as an Indicator of Fatigue Life of Granite/epoxy Fiber Composite

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ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Ultrasonic Attenuation as an Indicator of Fatigue Life of Granite/epoxy Fiber Composite by : James H. Williams

Download or read book Ultrasonic Attenuation as an Indicator of Fatigue Life of Granite/epoxy Fiber Composite written by James H. Williams and published by . This book was released on 1979 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fatigue Damage-strength Relationships in Composite Laminates. Volume 1

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Publisher :
ISBN 13 :
Total Pages : 58 pages
Book Rating : 4.:/5 (319 download)

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Book Synopsis Fatigue Damage-strength Relationships in Composite Laminates. Volume 1 by : Kenneth L. Reifsnider

Download or read book Fatigue Damage-strength Relationships in Composite Laminates. Volume 1 written by Kenneth L. Reifsnider and published by . This book was released on 1983 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is Vol. I of a 2-part final report on the activities which were conducted under Contract No. F33615-81-3225. The general objective of this program was to investigate the precise nature of the damage events caused by cyclic (fatigue) loading of composite laminates that are directly related to fracture of those laminates, to develop a conceptual understanding of how those damage events reduce the residual strength of the laminates, and to determine how the collective damage condition following long-term cyclic loading precipitates the final fracture event. The program was conducted in four phases: (1) the development of fatigue damage during long-term cyclic loading was investigated in such a way that the damage events which occur quite late in the fatigue life of the material, just prior to fracture, were identified and characterized; (2) the special contribution and nature of fiber fracture was investigated; (3) the nature of the collective damage condition which precipitates the fracture event under long-term fatigue loading was investigated; (4) a philosophy of fracture in composite laminates following severe damage development due to cyclic loading was developed. A wide variety of destructive and nondestructive experimental evaluation schemes were used in the program, and several analytical efforts were conducted to support the experimental activities.

Torsional Fatigue of Carbon Fiber Reinforced Epoxy Composite Strands and the Influence of Plasma Treatment on the Fatigue Behavior

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Publisher :
ISBN 13 :
Total Pages : 204 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Torsional Fatigue of Carbon Fiber Reinforced Epoxy Composite Strands and the Influence of Plasma Treatment on the Fatigue Behavior by : Klaus Friedrich Ko̐ster

Download or read book Torsional Fatigue of Carbon Fiber Reinforced Epoxy Composite Strands and the Influence of Plasma Treatment on the Fatigue Behavior written by Klaus Friedrich Ko̐ster and published by . This book was released on 1998 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: