Optimization of Drilling Parameters for Enhanced Hole Circularity and Chip Formation in Aircraft Components Manufacturing | Chapter 2 | Engineering Research: Perspectives on Recent Advances Vol. 4

Drilling is a crucial process in the production of accurate holes for aircraft components, but challenges such as poor circularity and unpredictable chip formation in aluminum alloys can compromise airframe quality and introduce potential defects. This study focuses on optimizing chip formation, hole circularity, and drilling parameters, particularly feed rate and spindle speed. Dry drilling experiments were performed using high-speed steel drill bits on Al6061-T6 alloy, with CIMCO MDC-MAX software utilized for monitoring machine performance and collecting detailed data. The research examines the effects of varying feed rates on hole circularity, chip characteristics, and chip thickness. Results show that higher feed rates lead to greater circularity errors and increased chip thickness. Variations in circularity are linked to workpiece vibrations during drilling, while chip thickness increases with feed rates and cumulative drilled holes due to factors such as tool wear and suboptimal cutting conditions. Additionally, a significant relationship between machine performance and product quality is observed. Data from CIMCO MDC-MAX indicate that a feed rate of 0.260 mm/rev achieves superior machine performance and minimal circularity error. Conversely, Drill 6, operating at a feed rate of 0.230 mm/rev, demonstrates lower machine performance and higher average circularity error. These findings provide valuable insights into the interplay between drilling parameters and hole quality, emphasizing the importance of parameter optimization to improve drilling performance in aircraft manufacturing. The study offers practical recommendations for enhancing drilling processes in the production of aircraft components.

 

Author (s) Details

 

Rasidi Ibrahim
Department of Mechanical Engineering, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raya, Johor, Malaysia.

 

Aishah Ahmad
Department of Mechanical Engineering, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raya, Johor, Malaysia.

Hadrami Zainoridin
Department of Mechanical Engineering, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raya, Johor, Malaysia.

 

Chong Bin Hong
HPMT Industries Sdn. Bhd, Taman Perindustrian, Shah Alam, Selangor, Malaysia.

Kai Cheng
Department of Advanced Manufacturing & Enterprise Engineering (AMEE), School of Engineering and Design, Brunel University London, United Kingdom.

 

Please see the book here:- https://doi.org/10.9734/bpi/erpra/v4/3903

Possibilities of Solving the Stability of Salt Strata Penetrated by Drilling: A Descriptive Study| Chapter 6 | Emerging Challenges in Environment and Earth Science Vol. 3

The rendering of oil structures apparent in the deep layers in Romania limits the penetration of some thick salt deposits (500-3,000 m) positioned above structures with petroleum potential (6,000 m). Drilling through these salt deposits is a major risk both during construction (drilling, cementing) and thereafter to ensure the wells' stability and dependability. These considerations shaped the approach to the salt deformation behaviour study challenge. The purpose of this article is to examine the following: salt behaviour deformation; establishment of the required parameters to ensure the stability of the drillings until bore-hole lining (particularly the secondary stress state around the drilling, the density of the drilling fluid in relation to temperature, respectively the depth), and also after casing (type of cement pastes, nature, quality, and pipe dimensions), namely the reliabilit The findings may aid in the selection of various options for guaranteeing the stability of boreholes that reach salt layers.

Author(s) Details:

Mihaela Toderas,
Department of Mining Engineering, Surveying and Constructions, University of Petrosani, Petrosani, 332006, Romania.

Please see the link here: https://stm.bookpi.org/ECEES-V3/article/view/6689

Machinability of Titanium Alloy 6246 in Drilling Using TiAlN PVD Coated Carbide Insert Tools | Chapter 7 | New Approaches in Engineering Research Vol. 6

 Machinability is a measure of how easy it is to machine a material. Surface roughness and surface integrity of machined items, cutting speed, forces at work during machining or energy consumption, tool life, and chip formation are all factors to consider. This paper examines the machinability of titanium alloy 6246 when drilled with TiAlN PVD-coated carbide tools from the standpoint of tool deterioration. The trials were designed using Taguchi L18, with five parameters influencing tool deterioration at mixed levels of 2 and 3. The three types of tool deterioration were identified: built-up edge (BUE), delamination, and chipping. Every drill bit was utilised for a single drilling and then examined using a scanning electron microscope (SEM) from the flank and rake views. Although no wear was identified in this study, tool delamination and tool chipping were seen, even though the drilling depth was just 10 mm. The tool's outer blade, inner blade, and chisel all had a built-up edge. This BUE is visible from both the rake and flank sides. Regardless of the settings used, BUE is the most prominent deterioration and occurs invariably while drilling this alloy. During the technique of peeling off the BUE, tool delamination may occur. Chipping was linked to a higher feed rate, which could be attributed to a high MRR. Data analysis using Minitab 19 demonstrates that drilling without chilling, 45 mm depth, 27 m/min cutting speed, and 0.08 mm/min feed rate result in the greatest performance of TiAlN tool for drilling Ti6246 heat treated 870oC then water quenched.

Author(s) Details

Mahros Darsin
University of Jember, Mechanical Engineering Department, Jl Kalimantan 37, Jember, 68121 Indonesia.

Tim Pasang
Oregon Institute of Technology, Chair of Department of Manufacturing and Mechanical Engineering and Technology, 3201 Campus Drive, Klamath Falls, OR 97601, Oregon, USA.

View Book :- https://stm.bookpi.org/NAER-V6/article/view/2491

A Recent Advancement: Casing while Drilling – A Viable Alternative to Conventional Drilling| Chapter 3 | Recent Developments in Engineering Research Vol. 12

 The increased demand for and reliance on energy resources, including those resulting from the discovery and development of new hydrocarbon commercial reservoirs, necessitates the use of new technologies such as drilling process optimization by reducing non-productive time, costs, and risks. Casing while drilling entails removing the traditional drilling string and using the casing string to transmit mechanical energy to the bit as well as circulate drilling fluid into the well. Casing while drilling has proven to be an efficient method that is constantly improving over time. to reduce risks, particularly those associated with the presence of a conventional drill string in the borehole, borehole stability, or loss of circulation Despite a number of technical or perception barriers associated with the use of casing drilling, the significant benefits of this technology, such as reduced drilling time and problems associated with the drilling string, make it an increasingly viable alternative to conventional drilling. The application of this technology has demonstrated that it can reduce well execution time and, in some cases, lower costs in relation to drilling depth.

Author(s) Details

Lect. Dr. Eng. Ion Foidaş
Lucian Blaga University of Sibiu, E. Cioran 4, România

Dan-Paul Stefanescu
Lucian Blaga University of Sibiu, E. Cioran 4, Romania.

Mihai Serbancea
Weatherford Atlas GIP S.A, Romania.

View Book :- https://stm.bookpi.org/RDER-V12/article/view/1480

Determination of Some Geo-Mechanical Parameters and the Effect of Anisotropy in Sedimentary Rocks for Hydrocarbon Exploration and Exploitation Using Core Samples in Western Part of Tripura, India | Chapter 3 | International Research in Environment, Geography and Earth Science Vol. 1

The velocity anisotropy parameters and elastic constants play very important role to estimate Young’s modulus and Poisson’s ratio accurately. For geomechanics applications such as hydraulic fracturing design, analysis of wellbore stability and rock failure, determination of in situ stress and assessment of the response of reservoirs and surrounding rocks to changes in pore pressure and stress, Young’s modulus and Poisson’s ratio play very important role. Four rock samples were collected from four different wells situated in study area. The ultrasonic transmission method has been used to measure P – wave, Sh – wave and Sv – wave travel times as a function of orientation and confining pressure. The five independent stiffnesses constants, Young’s moduli, Poisson’s ratio and Bulk moduli of the samples were estimated. The Poisson’s ratios (ϑ,ϑand ϑ) are varying as the confining pressure is changed. The axial strain is larger than the lateral strain, resultingϑ<ϑ. For shales, the Young’s modulus measured parallel to bedding E1 is usually greater than the Young’s modulus measured perpendicular to bedding E3. Through this study it has been observed that there is a strong effect of anisotropy parameters on Young’s modulus and Poisson’s ratio. 

Author(s) Details
Dr. Jwngsar Brahma 
Pandit Deendayal Petroleum University, Gandhinagar, Gujarat, India.

View Book: - http://bp.bookpi.org/index.php/bpi/catalog/book/169