Open Access Journal

ISSN : 2394-2320 (Online)

International Journal of Engineering Research in Computer Science and Engineering (IJERCSE)

Monthly Journal for Computer Science and Engineering

Open Access Journal

International Journal of Engineering Research in Mechanical and Civil Engineering (IJERMCE)

Monthly Journal for Mechanical and Civil Engineering

ISSN : 2456-1290 (Online)

Modelling and Analysis of Mode-I and Mode-II Delamination Onset in Composite Laminates

Author : Supreeth S 1 Manjunath S. B. 2

Date of Publication :21st June 2018

Abstract: A composite is a structural material that consists of two or more constituents combined at a macroscopic level and not soluble in each other. The advantages of composites over conventional materials are its Lightweight, High Strength, Design flexibility, Dimensional Stability etc. Although composite materials are advantageous than conventional materials, there are some defects in composite materials too, which are Fibre-matrix debonding, fiber misalignment, Delamination, Matrix cracking, Impact damage etc. Among these defects, Delamination is one of the major modes of failure for composite materials wherein separation of two adjacent plies in a composite laminate takes place. Delamination can be studied using two approaches, viz., Virtual Crack Closure Technique (VCCT), Cohesive Zone Modelling (CZM). VCCT is the study of damage based on the Energy Release rate of the material undergoing Delamination. In the present study, Finite Element Modelling and Engineering analysis of DCB and ENF standard specimens have been carried out by using the VCCT approach. Various parametric studies on the behavior of delamination with different material properties, ply orientations and a case study on different crack lengths are also studied and their effect on Delamination is presented

Reference :

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    2. Ronald Krueger, “A summary of benchmark examples to assess the performance of quasi –static delamination propagation prediction capabilities in finite element codes”, Journal of Composite Materials, 2014.
    3. Ronald Krueger, “Virtual crack closure technique : History, approach, and applications”, Appl Mech Rev vol.57 No.2, March 2004.
    4. Lyle R. Deobald, Gerald E. Mabson, “Guidelines for VCCT-Based Inter-laminar Fatigue and Progressive Failure Finite Element Analysis”, NASA/TM–2017- 219663, September 2017
    5. M. Uslu Uysal, “Virtual Crack Closure Technique on Delamination Fracture Toughness of Composite Materials Based on Epoxy Resin Filled with Micro-Scale Hard Coal”, Special Issue of the 6th International Congress & Exhibition (APMAS2016), Maslak, Istanbul, Turkey, June 1–3, 2016.

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