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Showing 1 to 10 of 10 for “"Composite Damage"”.
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Simulating artificial lightning and composite damage
… are increasingly made of electrically resistive composites, rather than conductive metals, it is important to analyse the damage caused by a strike. Literature has shown lightning can be modelled as a plasma (an ionised gas) and has been idealised into four electric current waveforms of varying …
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Finite element stress analysis of idealized composite damage zones
… stress and failure analysis of an idealized damage zone in a laminated composite under compressive loading. The following conclusions can be made from results of the analysis. 1. A boundary layer exists around the damage zone; it is similar to the boundary layer along the free edges. 2. …
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3D Deep Learning Segmentation for Fiber Break Analysis of Carbon Fiber Reinforced Polymer Tomograms
… scale of fiber and matrix lead to complex damage mechanisms, as well as make failure difficult to predict, slowing the progress of CFRP adoption over traditional engineering materials such as metals. X-ray computed tomography allows for non-destructive, volumetric imaging of CFRPs under …
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A Predictive Methodology for Soft Impact Damage in Jet Engines Incorporating Hybrid Composite Structures
… engine forward sections, containing hybrid and composite structures, when subjected to soft impact. Bird strike onto the fan assembly is chosen as the impact event to be studied. The aim is to develop a numerical methodology capable of accurately capturing the full range of multifaceted damage …
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Numerical Methods for Predicting the Dynamic Crushing Response and Energy Absorption of Composite Aluminum Honeycomb Sandwich Structures
<p>Edgewise crushing responses of composite aluminum honeycomb sandwich structures were predicted using finite element analysis (FEA) software LS-DYNA by modeling the honeycomb as a material with anisotropic properties. The goal of the project was to develop a process for modeling the sandwich …
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Analysis of a hybrid composite pressure vessel using multi-scale computed tomography techniques
… tension to failure. The material structure and damage mechanisms of internally pressurised experimental cylinders have then been investigated and compared to the notched laminate. It was found the damage accumulation of both samples to be comparable, where fibre breaks were the dominant strength …
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Identification and Quantification of Nonlinear Behavior in a Disbonded Aluminum Honeycomb Panel using Single Degree-of-Freedom Models
<p>There is not a complete understanding of how damage mechanisms in composite materials react to nondestructive testing inputs. A deeper understanding of composite damage mechanisms and their responses to external vibratory excitation is sought using nonlinear modeling of damping and stiffness …
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Comprehensive Multi-Scale Progressive Failure Analysis for Damage Arresting Advanced Aerospace Hybrid Structures
… recent years, the prevalence and application of composite materials has exploded. Due to the demands of commercial transportation, the aviation industry has taken a leading role in the integration of composite structures. Among the leading concepts to develop lighter, more fuel-efficient …
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A framework for damage modeling in multi-constituent laminated materials
… domain, between materials, and over time. Composite material containing directionally oriented material have become a necessity in the world of structural, mechanical, aerospace, and material engineering design. To account for the thermomechanical curing processes that these materials …
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Composite Structural Health Monitoring With Piezoelectric Wafer Active Sensors
… its structural integrity, detect and quantify damage that develops during the entirety of its life. Effective SHM will not only increase the safety of structures, it will also limit the amount of manual, error prone inspections that currently dominate the field. Over the past several decades, …