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Author : Scott E. Groves
Release : 1994
Genre : Composite materials
Kind : eBook
Book Rating : 990/5 ( reviews)
Book Synopsis Compression Response of Composite Structures by : Scott E. Groves
Download or read book Compression Response of Composite Structures written by Scott E. Groves. This book was released on 1994. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. G. Williams
Release : 1995
Genre : Science
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis Impact and Dynamic Fracture of Polymers and Composites (ESIS 19) by : J. G. Williams
Download or read book Impact and Dynamic Fracture of Polymers and Composites (ESIS 19) written by J. G. Williams. This book was released on 1995. Available in PDF, EPUB and Kindle. Book excerpt: Impact and Dynamic Fracture of Polymers an Composites consist of thirty-nine reviewed and revised papers presented at the European Symposium on Impact and Dynamic Fractures of Polymers and composites held in Sardinia. The volume is divided into four sections. The first section deals with experimental methods and concepts in high-speed loading. Dynamic crack propagation is described in section 2, and rate-dependence and impact fracture toughness of plastics is dealt with in section 3. the last section is concerned with the impact damage of composites. Finally an extensive index facilitates the location of specific information for readers. This volume is the nineteenth in a series of special technical publications produced by the European Structural Integrity Society. It is an informative and original piece of work and can be thoroughly recommended to engineering designers, manufacturing engineers, and material scientists. Indeed, Impact and Dynamic Fracture of Polymers and Composites makes a significant contribution to the literature on this important subject, and will make essential reading to all those involved in this field of mechanical engineering.
Author : Pengfei Liu
Release : 2021-03-09
Genre : Technology & Engineering
Kind : eBook
Book Rating : 631/5 ( reviews)
Book Synopsis Damage Modeling of Composite Structures by : Pengfei Liu
Download or read book Damage Modeling of Composite Structures written by Pengfei Liu. This book was released on 2021-03-09. Available in PDF, EPUB and Kindle. Book excerpt: Damage Modeling of Composite Structures: Strength, Fracture, and Finite Element Analysis provides readers with a fundamental overview of the mechanics of composite materials, along with an outline of an array of modeling and numerical techniques used to analyze damage, failure mechanisms and safety tolerance. Strength prediction and finite element analysis of laminated composite structures are both covered, as are modeling techniques for delaminated composites under compression and shear. Viscoelastic cohesive/friction coupled model and finite element analysis for delamination analysis of composites under shear and for laminates under low-velocity impact are all covered at length. A concluding chapter discusses multiscale damage models and finite element analysis of composite structures. Integrates intralaminar damage and interlaminar delamination under different load patterns, covering intralaminar damage constitutive models, failure criteria, damage evolution laws, and virtual crack closure techniques Discusses numerical techniques for progressive failure analysis and modeling, as well as numerical convergence and mesh sensitivity, thus allowing for more accurate modeling Features models and methods that can be seamlessly extended to analyze failure mechanisms and safety tolerance of composites under more complex loads, and in more extreme environments Demonstrates applications of damage models and numerical methods
Author : PJ. Joyce
Release : 1998
Genre : Composite materials
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis Compression Strength Reduction in Composites with In-Plane Fiber Waviness by : PJ. Joyce
Download or read book Compression Strength Reduction in Composites with In-Plane Fiber Waviness written by PJ. Joyce. This book was released on 1998. Available in PDF, EPUB and Kindle. Book excerpt: The effect of fiber waviness, which develops during the processing and manufacture of fiber-reinforced composite structures, on compressive failure was investigated. Analytical and experimental evidence has shown that out-of-plane waviness (also referred to as layer or ply waviness) is a major contributing factor in compressive strength reduction; however, there is a paucity of data concerning the effects of in-plane waviness or wrinkling on the compressive response of composites. In this paper, we present data from a series of compression tests examining the effects of varying levels of in-plane fiber waviness. These tests used a novel combined shear/end loading compression test fixture (WTF combined loading compression test fixture) in order to ameliorate problems typically associated with pure end-loading (brooming and end-damage) and pure shear loading (tab debonding and high stress concentrations due to discontinuity stresses). The fixture performed adequately when testing wavy specimens, but we experienced repeated tab failures in the non-wavy specimens. The compression test results exhibit a distinct linear trend of decreasing compressive strength with increasing waviness severity as represented by the maximum off-axis angle of the wavy fibers. Optical microscopy revealed that kink bands, leading to catastrophic failure, initiate at the most severe fiber misorientation sites in the wavy regions.
Author :
Release : 1989
Genre :
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis Through-Thickness Strain Response of Thick Composites in Compression by :
Download or read book Through-Thickness Strain Response of Thick Composites in Compression written by . This book was released on 1989. Available in PDF, EPUB and Kindle. Book excerpt: With the continued success of composite materials in high performance structures, new applications for Navy primary structure are being identified. Many of these applications require designs with composite materials having section thicknesses greater than those that have been used and studied to date. Along with this interest in thick composite structures comes the need for full three-dimensional stress analysis. The limits and accuracy of existing three- dimensional data bases will dictate the limit and accuracy of corresponding analyses. This report summarizes an investigation of the through-thickness strain response of thick composite materials subjected to compressive loading. One-half inch thick (96 ply) carbon and S2 glass reinforced composites were studied. A thick-section compression test method has been developed for the purposed of this investigation. Using this test method the longitudinal and through-thickness strain to failure, longitudinal modulus, inplane and through- thickness Poisson's ratio, and ultimate strength of these materials have been determined. The through-thickness data from the 96 ply 0 coupons show the materials to be transversely isotropic. The through-thickness data from 96 ply 0/0/90 laminates show good correlation with a theoretical solution that provides the nine elastic constants for thick orthotropic plates.
