Variations in the Mechanical Strength of a Composite Material of Thermoplastic Matrix Reinforced with Woven Glass-Fabric After Being Submitted to Diverse Damage Sequences: A Statistical Analysis

2004 ◽  
Vol 1 (10) ◽  
pp. 11863
Author(s):  
SW Dean ◽  
MA Garcia ◽  
A Argüelles ◽  
I Viña ◽  
A Fernández-Canteli ◽  
...  
Keyword(s):  
Composite Material ◽  
Statistical Analysis ◽  
Mechanical Strength ◽  
Glass Fabric ◽  
Thermoplastic Matrix

scholarly journals The Effect of Transcrystallinity on the Interface of Green Flax/Polypropylene Composite Materials

2001 ◽  
Vol 10 (5) ◽  
pp. 096369350101000 ◽  
Author(s):  
N. E. Zafeiropoulos ◽  
C. A. Baillie ◽  
F. L. Matthews
Keyword(s):  
Composite Material ◽  
Composite Materials ◽  
Interfacial Strength ◽  
Anisotropic Layer ◽  
Polypropylene Composite ◽  
Flax Fibres ◽  
Fragmentation Test ◽  
Thermoplastic Matrix ◽  
Mode Of Failure

In recent years there has been an increasing interest in using natural fibres as potential reinforcements for polymers. The introduction of fibres such as flax in a semicrystalline thermoplastic matrix such as iPP (isotactic polypropylene) has been shown to lead to the development of transcrystallinity. The presence of an anisotropic layer such as transcrystallinity in the composite material may in turn have a profound effect on the mechanical behaviour of the interface. In this study the role of transcrystallinity has been investigated in green flax (that is flax as received direct from the crops)/iPP by means of the fragmentation test. The results are discussed in terms of previously reported results for treated flax fibres (dew retted)/iPP. Transcrystallinity leads to a stronger interface in green flax/iPP, and its thickness affects the interfacial strength, with thinner transcrystalline layers giving a stronger interface. An examination of the mode of failure at the interface after the fragmentation test also supports the conclusion that the transcrystalline interface is stronger than the spherulitic interface in green flax/iPP composites.

scholarly journals Mechanical Strength Enhancement of Polylactic Acid Hybrid Composites

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 349 ◽  
Author(s):  
Ji-Won Park ◽  
Jae-Ho Shin ◽  
Gyu-Seong Shim ◽  
Kyeng-Bo Sim ◽  
Seong-Wook Jang ◽  
...  
Keyword(s):  
Composite Material ◽  
Mechanical Strength ◽  
Polylactic Acid ◽  
Mechanical Performance ◽  
Natural Fiber ◽  
Hybrid Composites ◽  
Structural Characteristics ◽  
Scanning Calorimetry ◽  
Environmental Friendliness ◽  
Research Attention

In recent years, there has been an increasing need for materials that are environmentally friendly and have functional properties. Polylactic acid (PLA) is a biomass-based polymer, which has attracted research attention as an eco-friendly material. Various studies have been conducted on functionality imparting and performance improvement to extend the field of application of PLA. Particularly, research on natural fiber-reinforced composites have been conducted to simultaneously improve their environmental friendliness and mechanical strength. Research interest in hybrid composites using two or more fillers to realize multiple functions are also increasing. Phase change materials (PCMs) absorb and emit energy through phase transition and can be used as a micro encapsulated structure. In this study, we fabricated hybrid composites using microcapsulated PCM (MPCM) and the natural fibrous filler, kenaf. We aimed to fabricate a composite material with improved endothermic characteristics, mechanical performance, and environmental friendliness. We analyzed the endothermic properties of MPCM and the structural characteristics of two fillers and finally produced an eco-friendly composite material. The PCM and kenaf contents were varied to observe changes in the performance of the hybrid composites. The endothermic properties were determined through differential scanning calorimetry, whereas changes in the physical properties of the hybrid composite were determined by measuring the mechanical properties.

scholarly journals Mechanical Strength of Bamboo Filled PLA Composite Material in Fused Filament Fabrication

2020 ◽  
Vol 4 (4) ◽  
pp. 159
Author(s):  
Scott Landes ◽  
Todd Letcher
Keyword(s):  
Composite Material ◽  
Mechanical Strength ◽  
Renewable Resources ◽  
Matrix Material ◽  
Thermoplastic Composite ◽  
Fused Filament Fabrication ◽  
Area Of Interest ◽  
Raster Angle ◽  
Manufacturing Parameters ◽  
Angle Orientation

Through the past two decades, there has been a continued push for renewable resources and future sustainability of materials and processes. This has prompted more developments of providing environmentally friendly practices and products, both in terms of higher recyclability and greater use of renewable resources. An important area of interest are materials for construction and manufacturing purposes, specifically “green” sustainable reinforcement materials for thermoplastic composite materials. During this time, there has also been an evolution in manufacturing methods. Additive manufacturing (AM) has continued to grow exponentially since its inception for its extensive benefits. This study aims to investigate an additive manufactured composite material that is a greener alternative to other composites that are not reinforced by natural fibers. A bamboo filled polylactic acid (PLA) composite manufactured by fused filament fabrication was evaluated in order to gather mechanical strength characteristics by means of tensile, flexure, compression, impact, and shear tests. In this material, the bamboo reinforcing material and the PLA matrix material can both be sourced from highly renewable resources. In this study, a variety of test samples were manufactured at different manufacturing parameters to be used for mechanical testing. The results were recorded with respect to varying manufacturing parameters (raster angle orientation). It was found that the 0° raster angle orientation performed the best in every category except tensile. Additively manufactured bamboo filled PLA was also seen to have comparable strength to certain traditionally manufactured bamboo fiber reinforced plastics.

Development of rapid tooling using fused deposition modeling: a review

2016 ◽  
Vol 22 (2) ◽  
pp. 281-299 ◽  
Author(s):  
Kamaljit Singh Boparai ◽  
Rupinder Singh ◽  
Harwinder Singh
Keyword(s):  
Composite Material ◽  
Thermal Properties ◽  
Mechanical Strength ◽  
Low Cost ◽  
Post Processing ◽  
Standard Material ◽  
Content Type ◽  
Fused Deposition ◽  
Direct Fabrication ◽  
Processing Techniques

Purpose The purpose of this study is to highlight the direct fabrication of rapid tooling (RT) with desired mechanical, tribological and thermal properties using fused deposition modelling (FDM) process. Further, the review paper demonstrated development procedure of alternative feedstock filament of low-cost composite material for FDM to extend the range of RT applications. Design/methodology/approach The alternative materials for FDM and their processing requirements for fabrication in filament form as reported by various researchers have been summarized. The literature demonstrates the role of various post-processing techniques on surface finish of FDM prints. Further, low-cost materials for feedstock filament have been investigated experimentally to check their adaptability/suitability for commercial FDM setup. The approach was to realize the requirements of FDM (melt flow rate, flexibility, stiffness, glass transition temperature and mechanical strength), necessary for the successful run of an alternative filament. The effect of constituents (additives, plasticizers, surfactants and fillers) in polymeric matrix on mechanical, tribological and thermal properties has been investigated. Findings It is possible to develop composite material feedstock as filament for commercial FDM setup without changing its hardware and software. Surface finish of the parts can further be improved by applying various post-processing techniques. Most of the composite parts have high mechanical strength, hardness, thermal stability, wear resistant and better bond formation than standard material parts. Research limitations/implications Future research may be focused on improving the surface quality of parts fabricated with composite feedstock, solving issues related to the uniform distribution of filled materials during the fabrication of feedstock filament which in turns further increases mechanical strength, high dimensional stability of composite filament and transferring the technology from laboratory scale to various industrial applications. Practical implications Potential applications of direct fabrication with RT includes rapid manufacturing (RM) of metal-filled parts and ceramic-filled parts (which have complex shape and cannot be rapidly made by any other manufacturing techniques) in the field of biomedical and dentistry. Originality/value This new manufacturing methodology is based on the proper selection and processing of various materials and additives to form high-performance, low-cost composite material feedstock filament (which fulfil the necessary requirements of FDM process). Finally, newly developed feedstock filament material has both quantitative and qualitative advantage in RT and RM applications as compared to standard material filament.

Damage development in a noncrimp-glass fabric reinforced epoxy composite material

2009 ◽  
Vol 30 (12) ◽  
pp. 1800-1808 ◽  
Author(s):  
G. Cruz-Santos ◽  
J. Rodríguez-Laviada ◽  
C.R. Rios-Soberanis
Keyword(s):  
Composite Material ◽  
Epoxy Composite ◽  
Glass Fabric ◽  
Damage Development

scholarly journals Synthesis and Properties of Electroconductive Polymeric Composite Material Based on Polypyrrole

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
N. S. Ilicheva ◽  
N. K. Kitaeva ◽  
V. R. Duflot ◽  
V. I. Kabanova
Keyword(s):  
Mechanical Properties ◽  
Composite Material ◽  
Mechanical Strength ◽  
Process Parameters ◽  
Physical And Mechanical Properties ◽  
Polymeric Composite ◽  
Polymeric Composite Material ◽  
Elastic Composite ◽  
The Relationship

A technique is proposed for obtaining electroconductive, mechanically strong, and elastic composite material based on polypyrrole and hydrophilized polyethylene. The relationship is established between the process parameters and properties of the composite material such as electroconductivity and mechanical strength. Several methods are considered in the view of increasing electroconductivity of the material. Physical and mechanical properties of the composite material are investigated.

scholarly journals A study on the sandwich-style notched tensile specimens for different materials through a simulation analysis

2018 ◽  
Vol 7 (3.3) ◽  
pp. 324
Author(s):  
Jung Ho Lee ◽  
Jae Ung Cho
Keyword(s):  
Tensile Strength ◽  
Stainless Steel ◽  
Composite Material ◽  
Statistical Analysis ◽  
Composite Materials ◽  
3D Modeling ◽  
Simulation Analysis ◽  
Maximum Load ◽  
Design Software ◽  
Strength And Durability

Background/Objectives: This study designed a model that used the sandwich-style notched tensile specimens of the same specifications by applying to the properties of CFRP, stainless steel, and aluminum, and performed a test simulation.Methods/Statistical analysis: The study used CATIA design software to perform the 3D modeling of the sandwich-style notched tensile specimens with the properties of CFRP, a composite material, and stainless steel and aluminum, both ordinary metals, and then, performed a tensile test simulation.Findings: By designing the sandwich-style notched tensile specimens of the same specifications and performing a test simulation, we were able to verify the tensile strength and durability of the specimens for the different materials. This study result showed that unlike the specimens for the ordinary metals, those specimens with the properties of the composite material of CFRP first showed maximum load instead of breaking immediately due to the fibers in CFRP, before they resisted displacement in response to the alternately increasing and decreasing load until it fractured. To be specific, we saw that the CFRP specimens had the more excellent tensile strength and durability.Improvements/Applications: The data obtained from the studies will serve as the basic data for studies on the composite materials like CFRP and other various materials.  

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