scholarly journals Multi-Objective Optimization of AWJM of Lead Tin Alloy by GRA

2019 ◽  
Vol 8 (2S3) ◽  
pp. 72-83
Keyword(s):  
Machining Process ◽  
Abrasive Waterjet ◽  
Machining Parameters ◽  
Grey Relation Analysis ◽  
Relational Analysis ◽  
Abrasive Waterjet Machining ◽  
Waterjet Machining ◽  
Single Response ◽  
Grey Relational ◽  
Grey Relation

Last decades have witnessed a rapid growth in the development of harder, difficult and complexity to machine metals and alloys. AWJM is one of the most freshly built up non traditional machining in processing various types of hard-to-cut materials nowadays. It is an economical method for heat sensitive materials that cannot be machined by processes that produce heat while machining. Machining parameters play the lead position in bringing out the machine economics and machining quality. This research examines the persuading and parametric optimization of five parameters of the process for Abrasive water jet machining of Lead Tin alloy involving grey relation analysis. Depending upon RSM various sets of research have been performed on this element by changeable five different parameters on MRR and SR. ANOVA has been carried out to recognize the noteworthy parameters which affect toughness of abrasive waterjet machining process. The consequence of the experiments for best possible setting proves that there is extensive development in the process. The main objective of grey relational analysis is to translate the multi response variable in to a single response grade

Multiresponse Analysis in Abrasive Waterjet Machining Process on AA 6351

2014 ◽  
Vol 4 (4) ◽  
pp. 38-48 ◽  
Author(s):  
Naresh Babu Munuswamy ◽  
M. Nambi Krishnan
Keyword(s):  
Surface Roughness ◽  
Optimal Parameter ◽  
Water Pressure ◽  
Traverse Speed ◽  
Machining Process ◽  
Abrasive Waterjet ◽  
Abrasive Waterjet Machining ◽  
Waterjet Machining ◽  
Kerf Angle ◽  
Grey Relational

This study investigates optimal parameter setting in abrasive waterjet machining (AWJM) on aluminium alloy AA 6351, using taguchi based Grey Relational Analysis (GRA) is been reported. The water pressure, traverse speed and stand-off-distance were chosen as the process parameters in this study. An L9 orthogonal matrix array is used for the experimental plan. The performance characteristics which include surface roughness (Ra) and kerf angle (KA) are considered. The results indicate that surface roughness and kerf angle decreases, with increase in water pressure and decrease in traverse speed. Analysis of variance (ANOVA) illustrates that traverse speed is the major parameter (89.7%) for reducing surface roughness and kerf angle, followed by water pressure (5.85%) and standoff distance (2%) respectively. The confirmation results reveal that surface roughness reduced by 16% and kerf angle reduced by 47%. Furthermore, the surfaces were examined under scanning electron microscope (SEM) and atomic force microscope (AFM) for a detailed study

Effect of Abrasive Waterjet Machining Parameters on Hybrid AA6061-B4C- CNT Composites

2018 ◽  
Vol 5 (5) ◽  
pp. 13438-13450 ◽  
Author(s):  
A. Gnanavelbabu ◽  
P. Saravanan ◽  
K. Rajkumar ◽  
S. Karthikeyan ◽  
R. Baskaran
Keyword(s):  
Abrasive Waterjet ◽  
Machining Parameters ◽  
Abrasive Waterjet Machining ◽  
Waterjet Machining

Experimental Study on Machining of Hybrid Composite Stacks Using Submerged Abrasive Waterjet Machining Process

2018 ◽  
Author(s):  
Mayur Narkhede ◽  
Sagil James
Keyword(s):  
Experimental Study ◽  
Grain Size ◽  
Hybrid Composite ◽  
Machining Process ◽  
Critical Parameters ◽  
Abrasive Waterjet ◽  
Precision Machining ◽  
Abrasive Waterjet Machining ◽  
Abrasive Grain ◽  
Waterjet Machining

The research involves experimental study on precision machining of hybrid composite stacks using Submerged Abrasive Waterjet Machining (SAWJM) process. In this study, an in-house fabricated SAWJM setup is used to machine a stack of Carbon Fiber Reinforced Polymer (CFRP) and Titanium. The effect of critical parameters including stand-off distance and abrasive grain size on the size of the cavity machined during SAWJM and Abrasive Waterjet Machining (AWJM) processes are studied. The study found that SAWJM process is capable of successfully machining CFRP/Titanium composites with high precision. The machined surface is free of thermal stresses and did not show any delamination or cracking around the edges. The study suggested that the stand-off distance and abrasive grain size has significant influence on the machining process. The cavities machined on both CFRP and titanium during SAWJM process are smaller and more circular than that produced during AWJM process. The results of this study provide deeper insight into precision machining of hybrid composite stacks.

Machinability Study of Hybrid FRP Composite Using Abrasive Waterjet Trimming Technology

2017 ◽  
Vol 740 ◽  
pp. 118-124 ◽  
Author(s):  
M.M.W. Irina ◽  
Azwan Iskandar Azmi ◽  
Chang Chuan Lee
Keyword(s):  
Surface Roughness ◽  
Thermal Sensitivity ◽  
Fiber Reinforcement ◽  
Machining Process ◽  
Abrasive Waterjet ◽  
Hydraulic Pressure ◽  
Abrasive Waterjet Machining ◽  
Frp Composite ◽  
Waterjet Machining ◽  
Conventional Machining

Machining of fiber reinforcement polymer (FRP) composite without any defect is extremely challenging when using conventional processes. This mainly due to its inherent anisotropic, heterogeneous, thermal sensitivity, and highly abrasive of nature of fiber reinforcement. Therefore, a kind of non-conventional machining process namely abrasive waterjet machining (AWJM) was endeavoured as it has been reported to be able to machine or cut almost any material included composites. In fact, previous research only provides partially desired parameters on machining these materials and mainly focuses on plain FRP composite. Therefore, this research attempted to evaluate the significant AWJM process parameters comprehensively on the main machinability output on the hybrid FRP composite. 2k factorial design and statistical analysis of variance (ANOVA) were applied to determine the performance of trimming process regarding surface roughness and delamination (entrance and exit). Experimental results revealed that the surface roughness was affected by the stand-off distance, abrasive flow rate, traverse rate rather than hydraulic pressure. Similar findings as to that of surface roughness were also observed for the top and bottom delamination damage.

scholarly journals Experimental Investigations into Abrasive Waterjet Machining of Carbon Fiber Reinforced Plastic

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Prasad D. Unde ◽  
M. D. Gayakwad ◽  
N. G. Patil ◽  
R. S. Pawade ◽  
D. G. Thakur ◽  
...  
Keyword(s):  
Material Removal Rate ◽  
Fiber Orientation ◽  
Material Removal ◽  
Removal Rate ◽  
Machining Process ◽  
Abrasive Waterjet ◽  
Experimental Investigations ◽  
Abrasive Waterjet Machining ◽  
Kerf Taper ◽  
Waterjet Machining

Abrasive waterjet machining (AWJM) is an emerging machining process in which the material removal takes place due to abrasion. A stream of abrasive particles mixed with filtered water is subjected to the work surface with high velocity. The present study is focused on the experimental research and evaluation of the abrasive waterjet machining process in order to evaluate the technological factors affecting the machining quality of CFRP laminate using response surface methodology. The standoff distance, feed rate, and jet pressure were found to affect kerf taper, delamination, material removal rate, and surface roughness. The material related parameter, orientation of fiber, has been also found to affect the machining performance. The kerf taper was found to be 0.029 for 45° fiber orientation whereas it was 0.036 and 0.038 for 60° and 90°, respectively. The material removal rate is 18.95 mm3/sec for 45° fiber orientation compared to 18.26 mm3/sec for 60° and 17.4 mm3/sec for 90° fiber orientation. The Ra value for 45° fiber orientation is 4.911 µm and for 60° and 90° fiber orientation it is 4.927 µm and 4.974 µm, respectively. Delamination factor is found to be more for 45° fiber orientation, that is, 2.238, but for 60° and 90° it is 2.029 and 2.196, respectively.

Current Research Trends in Abrasive Waterjet Machining of Fiber Reinforced Composites

2012 ◽  
Vol 713 ◽  
pp. 37-42 ◽  
Author(s):  
D.K. Kalla ◽  
B. Zhang ◽  
R. Asmatulu ◽  
P.S. Dhanasekaran
Keyword(s):  
Cutting Parameters ◽  
Machining Process ◽  
Fiber Reinforced Polymer ◽  
Abrasive Waterjet ◽  
Fiber Reinforced ◽  
Frp Composites ◽  
Abrasive Waterjet Machining ◽  
Reinforced Polymer ◽  
Waterjet Machining ◽  
The Common

The use of fiber reinforced polymer (FRP) composites in the aircraft and automotive industries exponentially. Reinforced fibers which are abrasive in nature make it hard to machine by the traditional machining. Dissipation of heat into workpiece which in turn results in enhanced cutting tool wear and damage to the workpiece is the common problems faced in traditional machining of FRPs. Nontraditional machining is favorable to reduce these issues. Abrasive waterjet machining (AWJM) is one of the best choices for machining FRPs. Development in AWJM of FRPs and the current research in this field will be discussed in details. Machining process of FRPs, quality dependents such as surface finish and variable cutting parameters will be addressed. One of main issues in AWJM noise due to high flow rate of water jet will be addressed. The importance of human safety aspects when AWJM is employed will be highlighted. Limitations and challenges in AWJM are presented elaborately.

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