Finite-element failure analysis of carbon fibre-reinforced plastic cylinders under transverse impact loading

In this research work, the acoustic emission results obtained from testing double cantilever beam specimens with carbon fibre reinforced plastic laminates are analysed. The acoustic emission descriptors such as amplitude, frequency centroid, counts, duration and risetime are clustered using k-means++ algorithm. An unconventional and innovative way of using the acoustic emission descriptors, after the clustering, is introduced. This method can favourably be used for relating the different damage progression modes in fibre reinforced plastics. Apart from this, the cumulative acoustic energy is used for predicting the crack length of the specimens. The predicted crack length is almost identical to the actual crack length opening recorded in each specimen. Finally, analytical and finite element models are used for validating the experimental results under the mode I delamination. The finite element studies are carried out using cohesive zone modelling in Comsol Multiphysics® platform.

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Analysis and collapse of thick composite torispheres

Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering ◽

10.1243/0954408981529349 ◽

1998 ◽

Vol 212 (2) ◽

pp. 103-117 ◽

Cited By ~ 7

Author(s):

L Dong ◽

J Blachut

Keyword(s):

Experimental Data ◽

Carbon Fibre ◽

Failure Analysis ◽

Failure Load ◽

Progressive Failure ◽

Woven Fabric ◽

Progressive Failure Analysis ◽

Reinforced Plastic ◽

Carbon Fibre Reinforced Plastic

A drape algorithm for a torispherical shape was developed and used to predict the distortion of woven fabric and its influence on the last ply failure load in externally pressurized composite dome closures. Two 50-ply carbon-fibre-reinforced plastic domes were manufactured and collapsed. Progressive failure analysis was carried out and comparisons with experimental data are provided.

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Finite element modelling of cutting force in shearing of multidirectional carbon fibre reinforced plastic laminates

Journal of Composite Materials ◽

10.1177/0021998318771145 ◽

2018 ◽

Vol 52 (28) ◽

pp. 3865-3874

Author(s):

Anton Shirobokov ◽

Fritz Klocke ◽

Oksana Baer ◽

Andreas Feuerhack ◽

Daniel Trauth ◽

...

Keyword(s):

Finite Element ◽

Carbon Fibre ◽

Cutting Force ◽

Cutting Forces ◽

Process Model ◽

Kinematic Model ◽

Functional Requirements ◽

Reinforced Plastic ◽

Carbon Fibre Reinforced Plastic ◽

Plastic Components

Lightweight structural components made of carbon fibre reinforced plastics are manufactured near-net-shape. However, in order to fulfil geometrical or functional requirements, carbon fibre reinforced plastic components have to be trimmed and pierced in a finish processing step. Shearing is a highly productive technology that is potentially suitable for cost-effective finishing of carbon fibre reinforced plastic components in high-volume series production. Shearing of carbon fibre reinforced plastic has not yet been sufficiently researched. Cutting force is an important characteristic of the shearing process. Up to now, there exists limited knowledge on numerical modelling of the cutting forces in carbon fibre reinforced plastic shearing. In order to address this, a finite element process model of carbon fibre reinforced plastic trimming was developed in this work. The process modelling included a formulation of continuum mechanical material model for a unidirectional ply as well as a development of a kinematic model of the trimming process. The developed finite element process model was validated by means of experimental data. The simulated and experimentally determined maximum specific cutting forces demonstrated a very good qualitative and quantitative agreement.

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