Computational Analysis of Self-Healing in a Polymer Matrix With Microvascular Networks

2008 ◽  
Author(s):  
Jose Martinez Lucci ◽  
R. S. Amano ◽  
Pradeep Rohatgi
Keyword(s):  
Polymer Matrix ◽  
Mechanical Performance ◽  
Polymer Matrix Composites ◽  
Self Healing ◽  
Matrix Composites ◽  
Microvascular Networks ◽  
Microvascular Network ◽  
Matrix Surface ◽  
The Matrix ◽  
Healing Agent

For the last decade, many researchers have been working to develop self-healing materials, and have obtained good results in the field of polymers, these components with microencapsulated healing agent have exhibited noticeable mechanical performance and regenerative property The research described in this paper applies the concept of self healing to simulate self healing polymer matrix composites, with the aid of models developed by the authors for the manufacturing processes and self-healing behavior. The development of self-healing is a novel idea that has not been totally explored in great detail yet. The concept of self-healing described in this paper consists of simulation of a healing agent dicyclopentadiene (DCPD) inside of a microvascular network within a polymer matrix coating with catalyst forming a self-healing composite (SHC). When this SHC is damaged or cracked, the healing agent by capillary action will flow inside of the microvascular network; when the liquid enter in contact with the catalyst will form a polymer structure and sealing the crack. The study consists of theoretical analysis and Computational Fluid Dynamics of a self-healing polymer. The objective of the study reported here was to find the influence and efficiency of the microvascular network in healing a polymer matrix. To check this effect a computational model was created to simulate the healing treatment, thus a crack was created on the matrix surface piercing the microvascular network filled with healing agent and the method to simulate healing behavior of the composite allows assessment of the effects of the autonomously repairing repeated damage events.

A Study on Characteristic of Polymer Matrix Composites Using Experimental and Statistical Approach

2013 ◽  
Vol 368-370 ◽  
pp. 683-686
Author(s):  
Ahmad Mubarak Tajul Arifin ◽  
Shahrum Abdullah ◽  
Rozli Zulkifli ◽  
Dzuraidah Abd Wahab
Keyword(s):  
Polymer Matrix ◽  
Statistical Approach ◽  
Polymer Matrix Composites ◽  
Stacking Sequence ◽  
Matrix Composites ◽  
The Matrix ◽  
Thermoset Epoxy ◽  
Chopped Strand Mat ◽  
Materials Used ◽  
And Behavior

This paper focuses on the characteristic study of polymer matrix composites using a statistical approach, in terms of difference experimental and reflected to difference stacking sequence and orientation of composite lamination. Composite material, have an excellent characteristic and behavior, but with a difference application and materials used, it have a difference phenomenon occurred before the composite structure are collapsed. Therefore, in order to understand the characteristic of polymer matrix composites, it needs to investigate the phenomenon that influences the structure of composite lamination before failures. In this research, polymer matrix composites are produced using difference material and stacking sequence of lamination. The matrix used is thermoset epoxy and polyester resin with chopped strand mat (CSM) and woven roving (WR) as reinforcement materials. It has been produced using hand lay-up technique. The experimental work is carried out using the tension and flexural test accordance to ASTM-D3039 and D-D790 standard. By using a statistical approach, it can clearly show the differential between materials used with a characteristic of composite materials. It is noted, based on this investigation it also showed difference phenomenon failures and damage structure of polymer matrix composites with difference type of experimental.

The Effect of Filler Content on the Mechanical Properties of Polymer Composite

2016 ◽  
Vol 858 ◽  
pp. 190-195
Author(s):  
Lenka Markovičová ◽  
Viera Zatkalíková
Keyword(s):  
Composite Material ◽  
Polymer Matrix ◽  
Filler Content ◽  
Polymer Matrix Composites ◽  
Ceramic Matrix Composites ◽  
Hardness Test ◽  
Carbon Matrix ◽  
Organic Matrix ◽  
Matrix Composites ◽  
The Matrix

A composite material is a macroscopic combination of two or more distinct materials, having a recognizable interface between them. Modern composite materials are usually optimized to achieve a particular balance of properties for a given range of applications. Composites are commonly classified at two distinct levels. The first level of classification is usually made with respect to the matrix constituent. The major composite classes include organic – matrix composites (OMC's), metal – matrix composites (MMC's), and ceramic – matrix composites (CMC's). The OMC's is generally assumed to include two classes of composites: polymer – matrix composites (PMC's) and carbon – matrix composites [1]. The composite material used in the work belongs to the PMC's and the composite is formed by the polymer matrix - high density polyethylene. As filler was used hard-magnetic strontium ferrite. Composite samples were prepared with different filler content (0%, 60%, 70%, 80%). Testing of polymer composites included: tensile test, elongation at break, impact test, hardness test.

Dielectric Properties of AlN/Polymer Composites for Electronic Substrate Application

2007 ◽  
Vol 334-335 ◽  
pp. 1053-1056 ◽  
Author(s):  
Jie Zhang ◽  
Hui Qing Fan ◽  
Sha Ming Ke ◽  
Yun Ze Shi ◽  
Xian Hua Zeng ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Epoxy Resin ◽  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Cole Plot ◽  
Matrix Composites ◽  
Low Dielectric ◽  
The Matrix ◽  
Varied Form ◽  
Electronic Substrates

The fabrication processing, dielectric properties and thermal properties of polymer-matrix composites containing AlN particles (10μm) for electronic substrates and microelectronic packaging applications were investigated. The epoxy resin (E-51) is used as the matrix, and the dispersion of the AlN in the composites is varied form 0 vol% to 40 vol%. The microstructures of the polymer-matrix composites are observed through scanning electron microscopy (SEM). With increasing the AlN content, thermal conducting of composites is improved, while the composites still keep the relatively low dielectric constant and dielectric loss. According to the dielectric properties dependence on frequencies (1kHz-10MHz) of the composites, the Cole-Cole plot is analyzed. The dipole relaxation in the composite is induced, and it is suggested that the air layer exit between the epoxy resin and the AlN particles.

Application of Continuum Damage Healing Mechanics to Self-Healing Composites

Aerospace ◽  
2003 ◽  
Author(s):  
Ever J. Barbero ◽  
Paolo Lonetti
Keyword(s):  
Parameter Identification ◽  
Polymer Matrix ◽  
Polymer Matrix Composites ◽  
Healing Process ◽  
Fiber Reinforced Polymer ◽  
Self Healing ◽  
Matrix Composites ◽  
Reinforced Polymer ◽  
General Parameter ◽  
Specific Material

Contimuum Damage Healig Mechanics is an extension of CDM recently developed by the authors to model healing process in a variety of materials including rock salt, sinterized metals, ceramics, and polymer-matrix composties, bone and so. on. While the theoretical framework, of CDHM is general, parameter identification depends on the particular material being modeled and the specific material tests that are feasible to conduct for that class of materials. This presentation deals with the application of CDHM to the specific field of fiber-reinforced polymer-matrix composites. An overview of CDHM will be presented followed by a description of parameter identification. Results are shown in order in validate the numerical model of healing behavior of damaged polymeric matrix composite. Healed and not healed cases discussed in order show the model capability and to describe possible evoltution of the healed system.

scholarly journals Comparative Analysis of the Mechanical Properties of Polymer Matrix Composites Reinforced with Fiberglass Fabric

TEM Journal ◽  
2021 ◽  
pp. 1745-1750
Author(s):  
Daniela Spasova ◽  
Yaroslav Argiro ◽  
Tatyana Mechkarova
Keyword(s):  
Mechanical Properties ◽  
Comparative Analysis ◽  
Polymer Matrix ◽  
Sea Water ◽  
Polymer Matrix Composites ◽  
Water Environment ◽  
Matrix Composites ◽  
The Matrix ◽  
Fiberglass Fabric ◽  
Mechanical Pressing

The composites materials are increasingly displacing the traditional ones and are the most widely used of all groups of engineering materials. Polymer matrix composites have the greatest application and they are used for equipment operating in the sea-water environment and polymer pipes. In this article, the mechanical properties of six types of polymer matrix composites reinforced with fiberglass fabric are considered and analyzed. Two types of resin were used for the matrix – polyester resin and vinyl ester resin. The both types of matrices are reinforced with three different fiberglass fabric- monoaxial, biaxial and triaxial fiberglass. The investigated composites are obtained by mechanical pressing in the form of sixlayer panels. A comparative analysis of tensile strength and banding strength of the six types investigated composites was made. A macrofractographic analysis of the structure was also performed.

scholarly journals Towards the development of novel self-sensing and self-healing methodologies in polymer matrix composites

2017 ◽  
Author(s):  
Δημήτριος Μπέκας
Keyword(s):  
Mechanical Performance ◽  
Polymer Matrix Composites ◽  
Self Healing ◽  
Matrix Composites ◽  
Damage Mechanisms ◽  
Frp Composites ◽  
Industrial Sectors ◽  
Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Non Destructive

Fibre reinforced polymer (FRP) composites are becoming excellent candidates to address significant weight reductions in several industrial sectors such as the aerospace, automotive, naval and renewable energy. The Achilles' heel of advanced FRP composites centers around the poor interlaminar fracture toughness that may lead to undetected damage within the microstructure deteriorating the mechanical performance. The purpose of the present work unfolds in two axes, (i) to develop a novel Non- Destructive Evaluation technique based on Impedance Spectroscopy for the damage assessment of nanomodified FRP composites. This study aims to providing an insight in the damage mechanisms that occur in FRPs during their active lifetime under different loading scenarios (mechanical or environmental loading), (ii) to develop and employ three “tailor-on-demand” self-healing strategies to counterbalance the aforementioned damage mechanisms and restore specific functionalities in the composite. The healing performance of all the adopted self-healing concepts showed remarkable results both at polymer and composite level.

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