scholarly journals Examination of Surface Roughness on Abrasive Water Jet Machining of Carbon Epoxy Composite

2019 ◽  
Vol 9 (2S2) ◽  
pp. 383-385
Keyword(s):  
Surface Roughness ◽  
Carbon Fibre ◽  
Orthogonal Array ◽  
Epoxy Composite ◽  
Water Pressure ◽  
Input Parameter ◽  
Water Jet ◽  
Abrasive Water Jet ◽  
Taguchi Analysis ◽  
Abrasive Water Jet Machining

The main aim of this investigation is to study the surface roughness produced on abrasive water jet machining of the twill weaved carbon fibre reinforced epoxy composite. Abrasive water jet machining experiment was conducted as per L9 orthogonal array, by varying water pressure, transverse speed and SOD. The performance of the composite was analysed by measuring the surface roughness. Using Taguchi analysis, the influences of input parameter over the output response was analysed. It was found that the surface roughness is highly influenced by the transverse speed.

scholarly journals Abrasive Water Jet Machining Performance on Carbon Epoxy Composite

2019 ◽  
Vol 9 (2S2) ◽  
pp. 386-388
Keyword(s):  
Material Removal ◽  
Epoxy Composite ◽  
Removal Rate ◽  
Water Pressure ◽  
Input Parameter ◽  
Water Jet ◽  
Abrasive Water Jet ◽  
Machining Performance ◽  
Taguchi Analysis ◽  
Abrasive Water Jet Machining

The main aim of this investigation is to study the abrasive water jet machining performance of the twill weaved carbon fibre reinforced epoxy composite. Abrasive water jet machining experiment was conducted as per L9 orthogonal array, by varying water pressure, transverse speed and SOD. The performance of the composite was analyzed by measuring the material removal rate and kerf. Using Taguchi analysis, the influences of input parameter over the output response was analyzed. It was found that the MRR is highly influenced by the transverse speed whereas kerf is highly influence by the SOD.

Study on carbon epoxy composite surfaces machined by abrasive water jet machining

2018 ◽  
Vol 53 (20) ◽  
pp. 2909-2924 ◽  
Author(s):  
Ajit Dhanawade ◽  
Shailendra Kumar
Keyword(s):  
Surface Roughness ◽  
Composite Material ◽  
Process Parameters ◽  
Surface Finish ◽  
Epoxy Composite ◽  
Water Jet ◽  
Machining Parameters ◽  
Abrasive Water Jet ◽  
Abrasive Water Jet Machining ◽  
Pull Out

Traditional machining of carbon epoxy composite material is difficult due to excessive tool wear, excessive stresses and heat generation, delamination, high surface waviness, etc. In the present paper, research work involved in the experimental study of abrasive water jet machining of carbon epoxy composite material is described. The aim of present work is to improve surface finish and studying defects in machined samples. Taguchi's orthogonal array approach is used to design experiments. Process parameters namely hydraulic pressure, traverse rate, stand-off distance and abrasive mass flow rate are considered for this study. Analysis of machined surfaces and kerf quality is carried out using scanning electron microscope to evaluate microscopic features. Further, the effect of machining parameters on surface roughness is investigated using analysis of variance approach. It is found that traverse rate and pressure are most significant parameters to control surface roughness. Optimization of process parameters is performed using grey relational analysis. Thereafter, confirmation tests are carried out to verify the improvement in the surface quality with optimum set of process parameters. It is found that surface finish of machined samples is improved by 10.75% with optimum levels of process parameters. Defects like delamination, fiber pull-out and abrasive embedment are also studied using SEM. It is observed that delamination and fiber pull-out are prominent in samples machined at low pressure and high traverse rate.

EXPERIMENTAL STUDY OF ABRASIVE WATER JET MACHINING OF KEVLAR EPOXY COMPOSITE

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Puneet Kumar ◽  
Ravi Kant
Keyword(s):  
Experimental Study ◽  
Surface Roughness ◽  
Mass Flow Rate ◽  
Flow Rate ◽  
Epoxy Composite ◽  
Water Pressure ◽  
Traverse Speed ◽  
Abrasive Water Jet ◽  
Abrasive Water Jet Machining ◽  
Kerf Taper

The present paper describes an experimental study of abrasive water jet machining (AWJM) of Kevlar epoxy composite. Influence of process parameters namely stand-off distance, water pressure, traverse speed and abrasive mass flow rate on surface roughness and kerf taper is investigated. Taguchi orthogonal approach is applied to plan the design of experiments; and subsequent analysis of experimental data is done using analysis of variance (ANOVA). It is found that water pressure and traverse speed are most significant parameters followed by stand-off distance and abrasive mass flow rate influencing surface roughness and kerf taper. With increase in water pressure and decrease in traverse speed, kerf taper and surface roughness decreases.

Investigation of cutting quality and surface roughness in abrasive water jet machining of bone

2018 ◽  
Vol 232 (9) ◽  
pp. 850-861 ◽  
Author(s):  
Ehsan Shakouri ◽  
Mohammad Abbasi
Keyword(s):  
Surface Roughness ◽  
Water Pressure ◽  
Pure Water ◽  
Abrasive Particle ◽  
Traverse Speed ◽  
Water Jet ◽  
Abrasive Water Jet ◽  
Abrasive Particles ◽  
Abrasive Water Jet Machining ◽  
Bone Powder

The abrasive water jet machining is known as a cold cutting process and can be effective for developing cut in the bone in orthopedic surgery to prevent thermal necrosis. This research examined surface roughness and cutting quality of bovine femur bone using abrasive water jet machining. Furthermore, the effect of three parameters was studied including water pressure, traverse speed, and the type of abrasive particles. The feed rate of the abrasive particles was considered 100 g/min, and the levels obtained from pure water jet cutting, bone powder abrasive water jet machining, and sugar abrasive water jet machining were compared with each other. Application of bone powder as an abrasive particle caused improved cutting quality, when compared with pure water jet, and in the best case, it resulted Ra and Rz values of 7.36 and 54.76 μm, respectively at the pressure of 3500 bar and traverse speed of 50 mm/min. The minimum surface roughness was obtained using sugar abrasive particles at the pressure of 3500 bar and traverse speed of 50 mm/min. The values of Ra and Rz parameters measured at the most desirable state were 3.87 and 19.72 μm, respectively. The results suggested that use of sugar as an abrasive material, in comparison with pure water jet and bone powder water jet, resulted in improved cutting quality. Furthermore, elevation of water pressure and reduction of traverse speed had a significant effect on improving surface roughness.

scholarly journals Effect of Delamination in Carbon Fibre Reinforced Polymer during Abrasive Water Jet Machining

2020 ◽  
Vol 9 (2) ◽  
pp. 202-208
Keyword(s):  
Carbon Fibre ◽  
Shear Crack ◽  
Water Pressure ◽  
Water Jet ◽  
Abrasive Water Jet ◽  
Abrasive Water Jet Machining ◽  
Reinforced Polymer ◽  
Carbon Fibre Reinforced Polymer ◽  
Fibre Reinforced Polymer ◽  
Electron Microscopes

Delamination is a type of defect produced while machining composites or layered materials. Due to matrix crack, shear crack and bending crack delamination is caused. Delamination is usually a separation along a plane parallel to the surface as in the separation of a coating from a substrate or layers of coating from each other. The aim of this project is to explore the study of delamination in carbon Fibre/epoxy composites under abrasive water jet machining. An experimental investigation was held to study the effect of delamination due to abrasive water jet machining on carbon fibre reinforced polymer. Effect of various parameters such as transverse speed, standoff distance, abrasive mass flow rate and water pressure was analysed. Taguchi method was used for overall analysis of parameters. Effect of Kerf width in CFRP material and on fibre cut was analysed step by step. Further observation was done on scanning electron microscopes. It can affect the compression strength of composite laminate and it will slowly cause the composite to experience failure through the buckling. Here the composite of Carbon Fibre Reinforced Polymer is made using carbon fibers and epoxy resin. Further cutting of CFRP is done using Abrasive water jet machining and analysis of delamination at various phases of the material is done. Analysis is done at which parameters delamination is reduced to minimum.

scholarly journals IMPLEMENTATION OF TAGUCHI APPROACH FOR PTIMIZATION OF ABRASIVE WATER JET MACHINING PROCESS PARAMETERS

2012 ◽  
pp. 224-228
Author(s):  
LEELADHAR NAGDEVE ◽  
VEDANSH CHATURVEDI ◽  
JYOTI VIMAL
Keyword(s):  
Surface Roughness ◽  
Taguchi Method ◽  
Process Parameters ◽  
Flow Rate ◽  
Orthogonal Array ◽  
High Velocity ◽  
Water Jet ◽  
Process Parameter ◽  
Abrasive Water Jet ◽  
Abrasive Water Jet Machining

In this paper, Taguchi method is applied to find optimum process parameter for Abrasive water jet machining (AWJM). Abrasive water jet machining is a non–traditional process of removal of material by impact erosion of high pressure, high velocity of water and entrained high velocity of grit abrasives on a work piece. Experimental investigation were conducted to assess the influence of abrasive water jet machining (AWJM) process parameters on MRR and surface Roughness (Ra) of aluminium. The approach was based on Taguchi’s method and analysis of variance (ANOVA) to optimize the AWJM process parameter for effective machining and to predict the optimal choice for each AWJM parameter such as pressure, standoff distance, Abrasive flow rate and Traverse rate. For each combination of orthogonal array we have conducted three experiments and with the help of ANOVA it is found that these parameters have a significant influence on machining characteristics such as metal removal rate (MRR) and surface roughness (SR). The analysis of the Taguchi method reveals that, in general the standoff distance significantly affects the MRR while, Abrasive flow rate affects the surface Roughness. Experiments are carried out using (L9) orthogonal array by varying pressure, sta

A Study on Erosion of Alumina Wafer in Abrasive Water Jet Machining

2014 ◽  
Vol 1017 ◽  
pp. 228-233 ◽  
Author(s):  
Yong Wang ◽  
Hong Tao Zhu ◽  
Chuan Zhen Huang ◽  
Jun Wang ◽  
Peng Yao ◽  
...  
Keyword(s):  
Process Parameters ◽  
Water Pressure ◽  
Abrasive Particle ◽  
Particle Diameter ◽  
Water Jet ◽  
Abrasive Waterjet ◽  
Abrasive Water Jet ◽  
Alumina Ceramics ◽  
Abrasive Water Jet Machining ◽  
Jet Impact

Abrasive water jet machining is considered as a promising technique in hard and brittle material processing. This paper studies the erosion performance of the alumina ceramics in the different process parameters. In the erosion experiments, alumina ceramics wafers were eroded by the abrasive waterjet machining. The single factor experiments were carried out to understand the effect of different process parameters (jet impact angle, standoff distance, water pressure, abrasive particle diameter) on the material removal rate (MRR), the removal depth and surface roughness (Ra). The experimental results can provide guidance for alumina ceramics abrasive water jet cutting and polishing.

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