Experimental study of delamination and kerf geometry of carbon epoxy composite machined by abrasive water jet

Dhanawade, Ajit; Kumar, Shailendra

doi:10.1177/0021998316688950

Cited by 103 publications

(73 citation statements)

References 29 publications

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“…In this study, the minimum conicity that can be obtained was indicated by applying high hydraulic pressure combined with a small stand-off distance. The conicity obtained is reduced by increasing the feed rate, contrary to the findings of Dhanawade et al [27]. This is because, at high pressures, an increase in feed rate generates a smaller upper width (Wt), producing a more constant cut.…”

Section: Introductioncontrasting

confidence: 71%

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Kerf Taper Defect Minimization Based on Abrasive Waterjet Machining of Low Thickness Thermoplastic Carbon Fiber Composites C/TPU

et al. 2019

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Carbon fiber-reinforced thermoplastics (CFRTPs) are materials of great interest in industry. Like thermosets composite materials, they have an excellent weight/mechanical properties ratio and a high degree of automation in their manufacture and recyclability. However, these materials present difficulties in their machining due to their nature. Their anisotropy, together with their low glass transition temperature, can produce important defects in their machining. A process able to machine these materials correctly by producing very small thermal defects is abrasive waterjet machining. However, the dispersion of the waterjet produces a reduction in kinetic energy, which decreases its cutting capacity. This results in an inherent defect called a kerf taper. Also, machining these materials with reduced thicknesses can increase this defect due to the formation of a damage zone at the beginning of cut due to the abrasive particles. This paper studies the influence of cutting parameters on the kerf taper generated during waterjet machining of a thin-walled thermoplastic composite material (carbon/polyurethane, C/TPU). This influence was studied by means of an ANOVA statistical analysis, and a mathematical model was obtained by means of a response surface methodology (RSM). Kerf taper defect was evaluated using a new image processing methodology, where the initial and final damage zone was separated from the kerf taper defect. Finally, a combination of a hydraulic pressure of 3400 bar with a feed rate of 100 mm/min and an abrasive mass flow of 170 g/min produces the minimum kerf taper angle.

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Section: Introductioncontrasting

confidence: 71%

“…Dhanawade et al [27] carried out a study on abrasive waterjet cutting in a thermoset polymeric matrix composite material. The CFRP used was 26 mm thick.…”

Section: Introductionmentioning

confidence: 99%

Kerf Taper Defect Minimization Based on Abrasive Waterjet Machining of Low Thickness Thermoplastic Carbon Fiber Composites C/TPU

et al. 2019

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“…Pratik Bose et al [9] get impact of water pressure and abrasive flow rate on surface roughness for GFRP composites. Ajit Dhanawade et al [10] used stand-off distance, jet pressure, traverse speed, and abrasive mass flow rate as a performance parameters and delamination and kerf geometry as performance parameter while experimenting on carbon epoxy composites. The result shows that delamination mainly depends on water pressure, abrasive flow rate and transverse speed whereas kerf taper ratio depends on transverse rate and SOD.…”

Section: Literature Reviewmentioning

confidence: 99%

Performance Analysis of Process Parameters on Machining of Aluminium Composite Panel using AWJM process

Pandya¹

2018

IJRASET

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The recent trends shows that numerous new materials are rapidly emerging and developed. It creates considerable interest in the researcher to search out the optimum combination of machining parameters during machining of these materials using advanced machining processes. Abrasive water jet cutting is a non-traditional machining method that offers a productive alternative to conventional techniques. It uses a fine jet of ultra-high pressure water and abrasive slurry to cut the target material by means of erosion. In order to obtain a product with high surface quality, the abrasive water jet machining process must be precisely controlled. In this work, an experimental investigation is carried out on abrasive water jet machining (AWJM) process for the machining of aluminium composite panel using the Taguchi methodology. Parameters such as transverse speed, standoff distance and mass flow rate are considered to obtain the influence of these parameters on kerf taper angle surface roughness and deamination factor. ANOVA and Regression analysis are performed to identify the impact of process parameters on performance parameters. Keywords: AWJM, Taguchi, ANOVA, Regression, Optimization I. INTRODUCTIONAluminium composite panels are flat panels consisting of two thin coil coated aluminium sheets bonded to a non-aluminium core. It is commonly used material by signage industry for providing artwork piece with better strength and aesthetics. The machining of ACP can be done with traditional as well as non-traditional ways of machining. In the case of traditional machining of ACP, in order to minimize the amount of heat generated and avoid thermal damage to the part, the proper tool geometry and operating conditions must be adopted. Precautions also should be taken to avoid introducing delamination in the work piece by limiting tool wear in order to keep machining forces low and by using back-up material to prevent delamination as the tool exist the work piece. So, Particularly in case of ACP composite if traditional machining is need to be done than, a specially designed tool will be required as well as there is also a need of backup material at the tool exit to avoid the amount of delamination. It will be difficult and costlier for industries. The non-traditional machining of ACP is possible with various machining processes like EDM, LBM, ECM, ECDM and AWJM. The main problem associated with EDM process like deposition of resolidified layer that hampers the surface quality. Tool wear and tool breaking are another major problems combined with this process. The LBM produced surfaces are affected by the transformed microstructure of matrix material due to excessive heat, presence of striation pattern and dross attachment at the bottom. The formation of pits at low voltage due to low current density and formation of streak at low electrolyte flow rate due to low turbulence on the machined surface during ECM is obvious. In AWJM the material removal takes place by means of erosion not by deformation wear. The quality of...

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“…Abrasive water jet machining is now presently used in various metal cutting process. The Abrasive Water Jet (AWJ) machining parameters such as jet operating water pressure (WP), transverse speed (TS), Standoff Distance (SOD), and concentration of abrasive are important for controlled cutting operation [1]. The quality of machining can be improved by controlling the AWJM parameters [2].…”

Section: Introductionmentioning

confidence: 99%

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

2019

IJITEE

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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.

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Experimental study of delamination and kerf geometry of carbon epoxy composite machined by abrasive water jet

Cited by 103 publications

References 29 publications

Kerf Taper Defect Minimization Based on Abrasive Waterjet Machining of Low Thickness Thermoplastic Carbon Fiber Composites C/TPU

Kerf Taper Defect Minimization Based on Abrasive Waterjet Machining of Low Thickness Thermoplastic Carbon Fiber Composites C/TPU

Performance Analysis of Process Parameters on Machining of Aluminium Composite Panel using AWJM process

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

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