scholarly journals Experimental Study on the Sustainability Assessment of AWJ Machining of Ti-6Al-4V Using Glass Beads Abrasive Particles

2021 ◽  
Vol 13 (16) ◽  
pp. 8917
Author(s):  
Nikolaos E. Karkalos ◽  
Panagiotis Karmiris-Obratański ◽  
Rafał Kudelski ◽  
Angelos P. Markopoulos
Keyword(s):  
Sustainability Assessment ◽  
Experimental Studies ◽  
Glass Beads ◽  
Abrasive Waterjet ◽  
Machining Processes ◽  
Depth Of Penetration ◽  
High Productivity ◽  
Abrasive Waterjet Machining ◽  
Waterjet Machining ◽  
Environmentally Friendly Process

Abrasive Waterjet Machining (AWJM) is considered a viable alternative to conventional machining processes, due to its capability of rendering even complex features on parts with high productivity. However, it is currently also important for manufacturing processes to comply with the various aspects of sustainability, by putting emphasis on the environmental dimension apart from the economic. Although AWJM generally is considered an inherently environmentally friendly process, it is required that thorough experimental studies be carried out to evaluate the sustainability of AWJM under various conditions. In the present work, AWJM experiments under various conditions were conducted on a Ti-6Al-4V workpiece in order to determine the optimal conditions leading to a high degree of sustainability in this process based on several indicators. The experiments were carried out using glass beads, which act as an eco-friendly abrasive. After the basic outcome of the experiment was analyzed to determine the correlations between process parameters and depth of penetration, kerf width, and kerf taper angle, sustainability analysis with the aid of Grey Relational Analysis (GRA) was conducted. The optimum solution provided a sufficiently high score regarding both the economic and environmental dimensions of sustainability.

EXPERIMENTAL INVESTIGATION ON ABRASIVE WATERJET MACHINING OF FIBRE VINYL ESTER COMPOSITE

2019 ◽  
Vol 14 (3) ◽  
Author(s):  
Puneet Kumar ◽  
Bhavik Tank ◽  
Ravi Kant
Keyword(s):  
Surface Roughness ◽  
Vinyl Ester ◽  
Water Pressure ◽  
Traverse Speed ◽  
Abrasive Waterjet ◽  
Machining Processes ◽  
Significant Parameter ◽  
Abrasive Water Jet Machining ◽  
Abrasive Waterjet Machining ◽  
Waterjet Machining

Abrasive water jet machining (AWJM) is one of the most developed non-traditional machining processes. It is generally used to cut difficult to cut materials like composites. The present study is focused on machining of carbon fiber vinyl ester composite with AWJM. The effect of process parameters namely water pressure, standoff distance and traverse speed on surface roughness and kerf tapper is studied. Design of experiment is done by using Taguchi L16 orthogonal array. It is observed that water pressure is the most significant parameter followed by traverse speed. It is found that with the increase in water pressure and decrease in traverse speed of AWJM, surface roughness and kerf tapper of machined samples decreases.

Optimization Factors in Abrasive-Waterjet Machining

1991 ◽  
Vol 113 (1) ◽  
pp. 29-37 ◽  
Author(s):  
M. Hashish
Keyword(s):  
High Pressure ◽  
Material Removal ◽  
Functional Performance ◽  
Abrasive Waterjet ◽  
Operational Parameters ◽  
Machining Processes ◽  
Abrasive Waterjet Machining ◽  
Sample Data ◽  
System Components ◽  
Waterjet Machining

This paper discusses the factors that need to be considered when selecting the operational parameters for abrasive-waterjet (AWJ) machining. Machining applications such as cutting, milling, and turning are considered along with sample data. The effects of different AWJ parameters on both the functional performance of the AWJ system components and the material removal process are discussed. Factors for optimizing these parameters include hardware limitations, high-pressure-related phenomena, and the performance interaction among the different nozzle components. Due to the large number of parameters and factors involved in AWJ machining processes, significant improvements in performance may be obtained by optimizing these parameters.

scholarly journals Defect Analysis and Detection of Cutting Regions in CFRP Machining Using AWJM

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4055 ◽  
Author(s):  
Pedro F. Mayuet Ares ◽  
Franck Girot Mata ◽  
Moisés Batista Ponce ◽  
Jorge Salguero Gómez
Keyword(s):  
Statistical Significance ◽  
Machining Process ◽  
Alternative Methods ◽  
Abrasive Waterjet ◽  
Machining Processes ◽  
Taper Angle ◽  
Abrasive Waterjet Machining ◽  
Industrial Sectors ◽  
Waterjet Machining ◽  
High Production

The use of composite materials with a polymeric matrix, concretely carbon fiber reinforced polymer, is undergoing further development owing to the maturity reached by the forming processes and their excellent relationship in terms of specific properties. This means that they can be implemented more easily in different industrial sectors at a lower cost. However, when the components manufactured demand high dimensional and geometric requirements, they must be subjected to machining processes that cause damage to the material. As a result, alternative methods to conventional machining are increasingly being proposed. In this article, the abrasive waterjet machining process is proposed because of its advantages in terms of high production rates, absence of thermal damage and respect for the environment. In this way, it was possible to select parameters (stand-off distance, traverse feed rate, and abrasive mass flow rate) that minimize the characteristic defects of the process such as taper angle or the identification of different surface quality regions in order to eliminate striations caused by jet deviation. For this purpose, taper angle and roughness evaluations were carried out in three different zones: initial or jet inlet, intermediate, and final or jet outlet. In this way, it was possible to characterize different cutting regions with scanning electronic microscopy (SEM) and to distinguish the statistical significance of the parameters and their effects on the cut through an analysis of variance (ANOVA). This analysis has made it possible to distinguish the optimal parameters for the process.

Implementation of “Research Works Based Learning” to the Manufacturing with Material Removal’s Teaching Process

2011 ◽  
Vol 692 ◽  
pp. 50-57
Author(s):  
Moisés Batista ◽  
Manuel Sánchez-Carrilero ◽  
Jose Antonio Sánchez ◽  
Jorge Salguero ◽  
Miguel Álvarez ◽  
...  
Keyword(s):  
High Speed ◽  
Project Based Learning ◽  
Abrasive Waterjet ◽  
Machining Processes ◽  
Processing Technologies ◽  
Experimental Procedure ◽  
Abrasive Waterjet Machining ◽  
Electro Discharge Machining ◽  
Learning Techniques ◽  
Waterjet Machining

Project Based Learning techniques have given rise to other learning techniques as Research Works Based Learning (RWBL). This technique is especially interested in the teching-learning process of Materials Processing Technologies related disciplines. This work reports on the results of the application of RWBL techniques in a subject of the Cadiz University’s Master in Manufacturing Engineering: Engineering of Non-Conventional Materials Removing Processes. Proposed research works have been designed on the basis of a classic research paper structure: Introduction, State of the Art, Experimental Procedure, Results, Discussion and Conclusions. These proposed works were focused on a comparative analysis of different machining processes, mainly, electro-discharge machining, abrasive waterjet machining and high speed machining. This experience can be considered highly successful because the 100% of the students reached the learning objectives of the subject.

scholarly journals Impacts of Traverse Speed and Material Thickness on Abrasive Waterjet Contour Cutting of Austenitic Stainless Steel AISI 304L

2021 ◽  
Vol 11 (11) ◽  
pp. 4925
Author(s):  
Jennifer Milaor Llanto ◽  
Majid Tolouei-Rad ◽  
Ana Vafadar ◽  
Muhammad Aamir
Keyword(s):  
Material Removal Rate ◽  
Material Removal ◽  
Removal Rate ◽  
Traverse Speed ◽  
Abrasive Waterjet ◽  
Taper Angle ◽  
Material Thickness ◽  
Abrasive Waterjet Machining ◽  
Kerf Taper ◽  
Waterjet Machining

Abrasive water jet machining is a proficient alternative for cutting difficult-to-machine materials with complex geometries, such as austenitic stainless steel 304L (AISI304L). However, due to differences in machining responses for varied material conditions, the abrasive waterjet machining experiences challenges including kerf geometric inaccuracy and low material removal rate. In this study, an abrasive waterjet machining is employed to perform contour cutting of different profiles to investigate the impacts of traverse speed and material thickness in achieving lower kerf taper angle and higher material removal rate. Based on experimental investigation, a trend of decreasing the level of traverse speed and material thickness that results in minimum kerf taper angle values of 0.825° for machining curvature profile and 0.916° for line profiles has been observed. In addition, higher traverse speed and material thickness achieved higher material removal rate in cutting different curvature radii and lengths in line profiles with obtained values of 769.50 mm3/min and 751.5 mm3/min, accordingly. The analysis of variance revealed that material thickness had a significant impact on kerf taper angle and material removal rate, contributing within the range of 69–91% and 62–69%, respectively. In contrast, traverse speed was the least factor measuring within the range of 5–18% for kerf taper angle and 27–36% for material removal rate.

Abrasive Waterjet Cutting of Aluminum Alloys: Workpiece Surface Roughness

2013 ◽  
Vol 404 ◽  
pp. 3-9 ◽  
Author(s):  
Nihat Tosun ◽  
Ihsan Dagtekin ◽  
Latif Ozler ◽  
Ahmet Deniz
Keyword(s):  
Mechanical Properties ◽  
Surface Roughness ◽  
Aluminum Alloys ◽  
Abrasive Waterjet ◽  
Traditional Methods ◽  
Workpiece Surface ◽  
Abrasive Waterjet Machining ◽  
Waterjet Machining ◽  
Area Of Application ◽  
Better Than

Abrasive waterjet machining is one of the non-traditional methods of the recent years which found itself a wide area of application in the industry for machining of different materials. In this paper, the surface roughness of 6061-T6 and 7075-T6 aluminum alloys are being cut with abrasive waterjet is examined experimentally. The experiments were conducted with different waterjet pressures and traverse speeds. It has been found that the surface roughness obtained by cutting material with high mechanical properties is better than that of obtained by cutting material with inferior mechanical properties.

Effect of abrasive waterjet machining on LaPO4/Y2O3 ceramic matrix composite

2017 ◽  
Vol 54 (2) ◽  
pp. 205-214 ◽  
Author(s):  
K. Balamurugan ◽  
M. Uthayakumar ◽  
S. Sankar ◽  
U. S. Hareesh ◽  
K. G. K. Warrier
Keyword(s):  
Matrix Composite ◽  
Ceramic Matrix Composite ◽  
Ceramic Matrix ◽  
Abrasive Waterjet ◽  
Abrasive Waterjet Machining ◽  
Waterjet Machining
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