Physico-mechanical and erosive wear analysis of polyester fibre-based nonwoven fabric-reinforced polymer composites

2018 ◽  
Vol 49 (4) ◽  
pp. 447-464 ◽  
Author(s):  
Sachin Tejyan ◽  
Tej Singh ◽  
Amar Patnaik ◽  
Gusztáv Fekete ◽  
Brijesh Gangil
Keyword(s):  
Impact Velocity ◽  
Polyester Fibre ◽  
Research Work ◽  
Erosive Wear ◽  
Nonwoven Fabric ◽  
Fibre Content ◽  
Epoxy Composites ◽  
Wear Behaviour ◽  
Air Jet ◽  
The Impact

The research work aims to study the physico-mechanical and erosive wear behaviour of polyester fibre-based needle-punched nonwoven fabric mat reinforced epoxy composites. Therefore, the epoxy composites with varying proportion of polyester fibre-based needle-punched nonwoven fabric mat were fabricated and characterized for their physical, mechanical and erosive wear properties. The experimental results indicated that the increase of fibre content enhanced the physical and mechanical properties of the composites. To optimize and improve the erosive wear performance of fabricated composites, the Taguchi method was implemented. For this, L27 orthogonal array was constructed to examine the influence of the five control factors including impingement angle, impact velocity, stand-off distance, fibre content and erodent size. The experimental schedule was carried out in an air jet erosion test rig. The results indicate that the impact velocity emerges as the most significant control factor affecting the erosive wear of fabricated composites. Finally, the possible erosive wear mechanisms were studied by examining the composites eroded surfaces with scanning electron microscopy.

Solid particle erosive wear behaviour of Eulaliopsis binata fiber reinforced epoxy composite

2020 ◽  
pp. 135065012093164
Author(s):  
Subhrajit Pradhan ◽  
Samir K Acharya
Keyword(s):  
Solid Particle ◽  
Natural Fiber ◽  
Erosive Wear ◽  
Weight Percent ◽  
Polymer Composite Material ◽  
Neat Epoxy ◽  
Wear Behaviour ◽  
Erosion Behavior ◽  
Eulaliopsis Binata ◽  
The Impact

In the present work, Eulaliopsis binata, a natural fiber collected from the eastern part of India is taken as a reinforcement with epoxy resin to develop a new class of polymer composite material, which has been unexplored till date for tribological applications in the composite industry. Different characterization studies of the fiber such as SEM, EDS, XRD are carried out to astern its potential to be used as a fiber in composite. Short Eulaliopsis binata fiber of different weight percent (10, 20, 30, and 40) is incorporated in neat epoxy and polymer composites are fabricated using the hand lay-up method. Solid particle erosion behavior of the fabricated composites is studied with four different impact velocities (48, 72, 82, 116 m/s) and impinging angles (30°, 45°, 60°, 90°). Improved erosion wear resistance is exhibited by the composites after the addition of Eulaliopsis binata fiber to neat epoxy. In addition, the inclusion of fiber altered the erosion behavior of neat epoxy from brittle to semi ductile nature. The impact velocity of the erodent particles also shows significant effect on the erosion behavior of the developed composites. The eroded surfaces of the worn samples are analyzed with SEM to ascertain the failure mechanism of the developed composites.

scholarly journals Erosive Wear Behaviour of WC Filled Glass Epoxy Composites

2013 ◽  
Vol 68 ◽  
pp. 694-702 ◽  
Author(s):  
N. Mohan ◽  
C.R. Mahesha ◽  
B.M. Rajaprakash
Keyword(s):  
Erosive Wear ◽  
Epoxy Composites ◽  
Wear Behaviour

scholarly journals Impact of Weft Yarn Density and Core-yarn Fibre Composition on Tensile Properties, Abrasion Resistance and Air Permeability of Denim Fabrics

2021 ◽  
Author(s):  
Nele MANDRE ◽  
Tiia PLAMUS ◽  
Andres KRUMME
Keyword(s):  
Tensile Properties ◽  
Abrasion Resistance ◽  
Polyester Fibre ◽  
Air Permeability ◽  
Fibre Content ◽  
Woven Fabric ◽  
Weft Yarn ◽  
The Core ◽  
Core Yarn ◽  
The Impact

Characteristics and serviceability of denim fabrics have undergone major changes. Nowadays denim is commonly used for casual wear. Durability and comfort are important parameters for consumers when choosing a denim garment. Therefore, in this study, abrasion resistance, tear and tensile properties of core–spun yarns and air permeability of denim fabrics with different weft yarns per centimetre and fibre content were analysed. The test results showed that weft yarns per centimetre influences fabric air permeability negatively but abrasion resistance increases. Higher weft yarns per centimetre influences fabric air permeability negatively but abrasion resistance increases. Polyester, elastane, modal, viscose and Lycra T400 were used in the core of weft yarn to analyse the impact of those fibres on the durability and comfort properties. Elastane is used to add stretchability to the fabric, which provides comfort to the wearer. The higher the elastomeric fibre content in the fabric, the greater is its elasticity; however, the tensile properties of the woven fabric decrease. The tear strength of the fabric was increased by the presence of the polyester fibre in the core.

Study and evaluation of the mechanical properties on sawdust reinforced epoxy composite

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Shailendra Singh Chauhan ◽  
Vaibhav Singh ◽  
Gauranshu Saini ◽  
Nitin Kaushik ◽  
Vishal Pandey ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Water Absorption ◽  
Epoxy Composite ◽  
Research Work ◽  
Processing Parameters ◽  
Epoxy Composites ◽  
Green Composite ◽  
Absorption Properties ◽  
Content Type ◽  
The Impact

Purpose The growing environmental awareness all through the world has motivated a standard change toward planning and designing better materials having good performance, which are very much suited to the environmental factors. The purpose of this study is to investigate the impact on mechanical, thermal and water absorption properties of sawdust-based composites reinforced by epoxy, and the amount of sawdust in each form. Design/methodology/approach Manufacturing of the sawdust reinforced epoxy composites is the main area of the research for promoting the green composite by having good mechanical properties, biodegradability or many applications. Throughout this research work, the authors emphasize the importance of explaining the methodology for the evaluation of the mechanical and water absorption properties of the sawdust reinforced epoxy composites used by researchers. Findings In this paper, a comprehensive review of the mechanical properties of sawdust reinforced epoxy composite is presented. This study is reported about the use of different Wt.% of sawdust composites prepared by different processes and their mechanical, thermal and water absorption properties. It is studied that after optimum filler percentage, mechanical, thermal properties gradually decrease, but water absorption property increases with Wt.% of sawdust. The changes in the microstructure are studied by using scanning electron microscopy. Originality/value The novelty of this study lies in its use of a systematic approach that offers a perspective on choosing suitable processing parameters for the fabrication of composite materials for persons from both industry and academia. A study of sawdust reinforced epoxy composites guides new researchers in the fabrication and characterization of the materials.

Effect of welding conditions on erosive wear of hard-faced Co-based alloy layer

2018 ◽  
Vol 232 (11) ◽  
pp. 1377-1389 ◽  
Author(s):  
Begori Venkatesh ◽  
Bharti Malvi ◽  
Manish Roy ◽  
Pallab Sarkar
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Solid Particle ◽  
Steel Substrate ◽  
Erosive Wear ◽  
Ductile Material ◽  
Material Loss ◽  
Air Jet ◽  
The Impact ◽  
Scanning Electron

Degradation of materials due to the impact of solid particle is a major material wastage process. Modifying the surface of materials can be considered to be a potential method of improving the resistance to erosion. In the present days, weld hard-facing is a popular surface modification process. Engineering industries are opting for hard-facing because of its low capital cost, low operational cost, and operational simplicity. In the context of erosion-resistant hard materials, a series of Co-based alloys that can be deposited by hard-facing is one of the most suitable materials. The present analysis has been carried out to evaluate the influence of processing conditions of hard-faced Co-based alloyed layer on solid particle erosion response at ambient temperature. These layers were deposited on mild steel substrate by weld hard-facing. The mechanical properties and microstructural features of these coatings were evaluated by means of X-ray diffraction technique, optical microscopy, scanning electron microscopy, and microhardness tester. Erosion rate was measured using an air jet erosion test rig. The eroded surface morphology and the transverse section of eroded surfaces were viewed using scanning electron microscopy. The results showed that hard-facing improves erosion resistance of the substrate. The erosion responses of most of the coatings were ductile. Material loss from hard-faced coating was by formation of lips followed by their fracture which initiated in the interdendritic regions.

Slurry Erosion Model for Wear Performance Prediction of Tool Steel

2013 ◽  
Vol 717 ◽  
pp. 194-199
Author(s):  
Peerawatt Nunthavarawong
Keyword(s):  
Tool Steel ◽  
Failure Modes ◽  
Erosive Wear ◽  
Life Extension ◽  
Wear Behaviour ◽  
Injection Velocity ◽  
Slurry Erosion ◽  
Wear Coefficient ◽  
Mould Material ◽  
The Impact

Erosive wear is one of the major failure modes in metal and plastic injection moulding. Certain regions such as gate, runner and some areas on the cavity wall, are particularly susceptible to erosive wear damage, leading to the reduction in the mould lifetime. Several parameters such as pressure, injection velocity, melting temperature, including various contaminants during material processing, have influenced to decrease the surface quality of the mould. Hence, the wear test and prediction are necessary information for the life extension of the mould material, and were carried out in present work. This work therefore aims to determine slurry erosion wear behaviour of the mould material, and presents a new semi-empirical approach to estimate the wear coefficient of material itself as a function of impact angles via an erosion test apparatus. It was found that the maximum wear coefficient of the tool material is around ~ 2.51 x 10-7 at the impact angle of 60o. While that the minimum value was found to be ~ 4.70 x 10-8 at the angle of impingement of 30o. Therefore, the effect of the different angle of impact on the impact energy, can also represent the failure modes in the tool steel material as ductile failures.

Erosion wear behaviour of A357/fly ash composites

2021 ◽  
pp. 135065012110191
Author(s):  
Tanusree Bera ◽  
Ved Prakash ◽  
Samir K Acharya
Keyword(s):  
Fly Ash ◽  
Impact Velocity ◽  
Abrasive Particle ◽  
Wear Behaviour ◽  
Erosion Wear ◽  
Impingement Angle ◽  
Weight Percentage ◽  
Casting Technique ◽  
Impact Angles ◽  
The Impact

In this article, a new metal–matrix composite was developed with fly ash (an industrial waste from petroleum industries) as reinforcement and aluminium metal (A357) as a matrix by squeeze casting technique. This study was concentrated on the processing of the composites with different weight percentage ranging from 0 to 10 wt.% in a step of 2.5 each and also reported the erosion wear behaviour. Solid particle erosion of A357/fly ash composites was carried out with four velocities (48, 70, 82 and 109 m/s), at impact angles (30°, 45°, 60° and 90°), with silica as an abrasive particle at ambient temperature. The eroded surfaces were analysed by scanning electron microscopy. The results revealed that the impact velocity and impingement angle both affected the erosion wear behaviour of the composites. The erosion rate rises with an increase in impact velocity, irrespective of the change in impingement angle and weight percentage of the fly ash. The erosion mechanism studied for the composites is microploughing and microcutting.

scholarly journals Erosion Wear Performance of Sheep Wool Fibre Reinforced Polyester Composites

2019 ◽  
Vol 9 (2S2) ◽  
pp. 565-567
Keyword(s):  
Impact Velocity ◽  
Composite Plate ◽  
Research Work ◽  
Composite Plates ◽  
Wool Fibre ◽  
Impingement Angle ◽  
Wear Rates ◽  
Air Jet ◽  
Polyester Composites ◽  
Sheep Wool

This research work focused on erosion performance of sheep wool reinforced polyester composites at varying wt% of fibre content (20 wt%, 30 wt% and 40 wt%). The compression moulding method is used to develop the composite plate. To investigate the wear rate of the developed composite plates, the composite plate is subjected to erosion studies. As per ASTM G76 the erosion test was done with the help of air jet erosion tester. To investigate the factors of varying wt% of fibre, impingement angle and impact velocity of the fabricated plates. The erosion behaviour of sheep wool fibre reinforced polyester composites is evaluated at varying wt% of reinforcement (20 wt%, 30 wt% and 40 wt%) with different impact velocities (41 m/s, 72 m/s and 100 m/s) and at different impingement angle (30o , 60o and 90o ). The standoff distance, time and erodent discharge rate were kept constant. Alumina oxide is used as erodent material with the size of 50 µm. From the result, it is observed that increase in impingement angle increase the erosion rates. Another observation is made that addition to impact velocity, increase in wt% of reinforcement decreases the wear rates.

scholarly journals A Study on Influence of Minivan Front-End Design and Impact Velocity on Pedestrian Thorax Kinematics and Injury Risk

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Fang Wang ◽  
Chao Yu ◽  
Guibing Li ◽  
Yong Han ◽  
Bingyu Wang ◽  
...  
Keyword(s):  
Impact Velocity ◽  
Injury Risk ◽  
Research Work ◽  
Thoracic Injury ◽  
Chinese Market ◽  
Computational Biomechanics ◽  
Front End ◽  
Vehicle Impact ◽  
Pedestrian Impact ◽  
The Impact

Thoracic injuries occur frequently in minivan-to-pedestrian impact accidents and can cause substantial fatalities. The present research work investigates the human thoracic responses and injury risks in minivan-to-pedestrian impacts, when changing the minivan front-end design and the impact velocity, by using computational biomechanics model. We employed three typical types of minivan model of different front-end designs that are quite popular in Chinese market and considered four impact velocities (20, 30, 40, and 50 km/h). The contact time of car to thorax region (CTCTR), thorax impact velocity, chest deformation, and thoracic injury risks were extracted for the investigation. The results indicate that the predicted pedestrian kinematics, injury responses, and thoracic injury risks are strongly affected by the variation of the minivan front-end design and impact velocity. The pedestrian thoracic injury risks increase with the increasing vehicle impact velocity. It is also revealed that the application of the extra front bumper is beneficial for reducing the thoracic injury risk, and a relatively flatter minivan front-end design gives rise to a higher thoracic injury risk. This study is expected to be served as theoretical references for pedestrian protection design of minivans.

Effect of Nano TiO2/Clay on the Erosive Wear Behavior of Basalt-Epoxy Hybrid Composites at Elevated Temperatures

2015 ◽  
Vol 813-814 ◽  
pp. 40-45 ◽  
Author(s):  
C R Mahesha ◽  
Shivarudraiah ◽  
C. Rajesh Chandra ◽  
R. Suprabha
Keyword(s):  
Impact Velocity ◽  
Erosion Rate ◽  
Elevated Temperatures ◽  
Hybrid Composites ◽  
Wear Behavior ◽  
Erosive Wear ◽  
Wear Test ◽  
Normal Incidence ◽  
Filler Concentration ◽  
The Impact

Materials added to the matrix help improving operating properties of a composite. In the last few years, nanofiller /polymer composite have been widely investigated because of their outstanding multifunctional properties. In order to improve the erosive wear resistance of composite, an attempt was made to use nanoTiO2 and nanoclay as filler for the basalt reinforced epoxy composite (BE). The impact velocity, filler concentration and temperature are the parameters used for the study. The composites were fabricated using vacuum assisted resin infusion technique (VARI) technique. The fabricated composite specimens were tested by using erosive wear test rig as per ASTM G76 under normal incidence. The result shows that the erosion rate increases with increase in temperature and impact velocity. However, nanoTiO2-filled BE composite exhibits lower erosion rate as compared to Nanoclay filled and unfilled composite. The morphology of eroded surfaces was examined by using scanning electron microscopy (SEM).

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