Investigating The Effect Of Ultrasonic Vibration On Hole Accuracy In Drilling Of The Metal Matrix Composites
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Investigating The Effect Of Ultrasonic Vibration On Hole Accuracy In Drilling Of The Metal Matrix Composites
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Author : Mohammadali Kadivar
language : en
Publisher:
Release Date : 2014
Investigating The Effect Of Ultrasonic Vibration On Hole Accuracy In Drilling Of The Metal Matrix Composites written by Mohammadali Kadivar and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Hole Making And Drilling Technology For Composites
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Author : Ahmad Baharuddin Abdullah
language : en
Publisher: Woodhead Publishing
Release Date : 2019-04-15
Hole Making And Drilling Technology For Composites written by Ahmad Baharuddin Abdullah and has been published by Woodhead Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-15 with Technology & Engineering categories.
Hole-Making and Drilling Technology for Composites: Advantages, Limitations and Potential presents the latest information on hole-making, one of the most commonly used processes in the machining of composites. The book provides practical guidance on hole-making and drilling technology and its application in composite materials and structures. Chapters are designed via selected case studies to identify the knowledge gap in hole-making operations in composites and to highlight the deficiencies of current methods. The book documents the latest research, providing a better understanding of the pattern and characterization of holes produced by various technologies in composite materials. It is an essential reference resource for academic and industrial researchers and professional involved in the manufacturing and machining of composites. In addition, it is ideal for postgraduate students and designers working on the design and fabrication of polymeric composites in automotive and aerospace applications. Features updated information on the most relevant hole-drilling methods and their potential in aircraft and other structural applications Features practical guidance for the end user on how to select the most appropriate method when designing fiber-reinforced composite materials Demonstrates systematic approaches and investigations on the design, development and characterization of ‘composite materials’
Characterization Testing Measurement And Metrology
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Author : Chander Prakash
language : en
Publisher: CRC Press
Release Date : 2020-10-26
Characterization Testing Measurement And Metrology written by Chander Prakash and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-26 with Technology & Engineering categories.
This book presents the broad aspects of measurement, performanceanalysis, and characterization for materials and devices through advanced manufacturing processes. The field of measurement and metrology as a precondition for maintaining high-quality products, devices, and systems in materials and advanced manufacturing process applications has grown substantially in recent years. The focus of this book is to present smart materials in numerous technological sectors such as automotive, bio-manufacturing, chemical, electronics, energy, and construction. Advanced materials have novel properties and therefore must be fully characterized and studied in-depth so they can be incorporated into products that will outperform existing products and resolve current problems. The book captures the emerging areas of materials science and advanced manufacturing engineering and presents recent trends in research for researchers, field engineers, and academic professionals.
Applied Mechanics Reviews
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Author :
language : en
Publisher:
Release Date : 1987
Applied Mechanics Reviews written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Mechanics, Applied categories.
Drilling Of High Performance Materials
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Author : Weilong Cong
language : en
Publisher:
Release Date : 2013
Drilling Of High Performance Materials written by Weilong Cong and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
High-performance materials, such as silicon, aerospace stainless steels, titanium alloys, and carbon fiber reinforced plastic (CFRP) composites, have a variety of engineering applications. However, they usually have poor machinability and are classified as hard-to-machine materials. Drilling is one of the important machining processes for these materials. Industries are always under tremendous pressure to meet the ever-increasing demand for lower cost and better quality of the products made from these high-performance materials. Rotary ultrasonic machining (RUM) is a non-traditional machining process that combines the material removal mechanisms of diamond grinding and ultrasonic machining. It is a relatively low-cost, environment-benign process that easily Ơ̐1ts in the infrastructure of the traditional machining environment. Other advantages of this process include high hole accuracy, superior surface Ơ̐1nish, high material removal rate, low tool pressure, and low tool wear rate. The goal of this research is to provide new knowledge of machining these high performance materials with RUM for further improvement in the machined hole quality and decrease in the machining cost. A thorough research in this dissertation has been conducted by experimental, numerical, and theoretical investigations on output variables, including cutting force, torque, surface roughness, tool wear, cutting temperature, material removal rate, edge chipping (for silicon), power consumption (for CFRP), delamination (for CFRP), and feasible regions (for dry machining of CFRP). In this dissertation, an introduction of workpiece materials and RUM are discussed first. After that, two literature reviews on silicon drilling and dry drilling are presented. Then, design of experiment and finite element analysis on edge chipping in RUM of silicon, experimental investigations and finite element analysis on RUM of aerospace stainless steels, an ultrasonic vibration amplitude measurement method and a cutting temperature measurement method for RUM using titanium alloys as workpiece, experimental and theoretical investigations on RUM of CFRP composites, and experimental studies on CFRP/Ti stacks are presented, respectively. Finally, conclusions and contributions on RUM drilling are discussed.
Experimental Investigation Of The Effect Of Axial Vibration Generated By Pressure Pulses On Drilling Performance
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Author : Ahmed Elnahas
language : en
Publisher:
Release Date : 2014
Experimental Investigation Of The Effect Of Axial Vibration Generated By Pressure Pulses On Drilling Performance written by Ahmed Elnahas and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Considering the fact that improving drilling efficiency contributes to the industry success, many academic organizations, industrial research organizations and companies have invested in research that leads to better drilling experience, time wise and efficiency wise. This thesis is a research based study that aims to find new methods to improve drilling efficiency. The study investigates the effect of vibration generated using periodic pressure pulses created at the bit by a down-hole tool on the drilling efficiency, and in fact demonstrates that the technology can improve drilling efficiency. The study is based on various sets of laboratory experiments, which were conducted to characterize the functionality of a Pressure Pulses Generating (PPG) down-hole tool, and to test the effect of the down-hole tool output on actual drilling experiments. Two different setups were used to conduct the experiments in laboratory environment. In the drilling experiments synthetic rock was used as test specimens with highly controlled properties and strength. The drilling experiments were conducted at different simulated down-hole condition, including bottom hole pressures, and different fluid flow rates. The study also highlighted the effect of varying the drill string compliance on the overall effect of induced down-hole axial vibration. Finally the study sets base for further investigation and experiment that will be conducted using a bigger scale setup similar to land drill rigs.
Metals Abstracts
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Author :
language : en
Publisher:
Release Date : 1998
Metals Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Metallurgy categories.
Investigation Of Effects Of Ultrasonic Vibration On Wetting Heating And Curing Of Structural Adhesives
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Author : Kin Ming Kwan
language : en
Publisher:
Release Date : 2000
Investigation Of Effects Of Ultrasonic Vibration On Wetting Heating And Curing Of Structural Adhesives written by Kin Ming Kwan and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
Evaluation Of Drill Bit Performance For Carbon Fiber Composites
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Author :
language : en
Publisher:
Release Date : 2008
Evaluation Of Drill Bit Performance For Carbon Fiber Composites written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Electronic dissertations categories.
Ever since composite materials have been used in the aerospace industry, there have been problems with cutting and machining them. One of the reasons for this problem was the dearth of available tooling to machine composites. As research in composites progressed and as composites found wide application in the aerospace industry, efforts have been made to develop good and efficient tools to machine them. Nevertheless, this effort is still ongoing to develop better tools, as the problems faced during machining have not been totally eliminated. Of the different machining operations performed on composite materials, drilling is the most common. The major problems faced during the drilling of composite materials are delamination and fibers pull out. Delamination reduces the strength of the composite. Another problem that persists is the effect of excess cutting temperatures on the quality of the drilled hole. Excess cutting temperatures affect the dimensional accuracy of the drilled hole and deteriorate its surface finish. Excess cutting temperatures during drilling may melt the matrix and char the drilled hole. Research and experiments conducted on drilling of composite materials have shown that as the cutting edges of the drill bit wear out, the heat generated and the thrust force produced increases. Increase in thrust force gives rise to delamination. Also tool geometry plays a big role in producing a hole with an acceptable quality. Hence, it is important to thoroughly investigate the performance of the drill bit in terms of producing a good hole quality. The objective of this research work was to evaluate the performance of drill bits when drilling carbon-fiber composites. Drill bits were evaluated for temperature, Hole oversize, surface roughness, roundness, thrust force, torque, damage area, and tool wear. By conducting experiments using different drill bits, the drill bit performance was determined for every parameter in question. Based on the results of these experiments, it was possible to determine which drill bit performs optimally for the different parameters investigated in this research work. Also by evaluating the Hole oversize, roundness, and surface roughness, it was be possible to study the effect of speed and feed rate on these parameters. Also tool wear analysis was carried out as a part of this research work.
Metal Cutting Theory And Practice
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Author : David A. Stephenson
language : en
Publisher: CRC Press
Release Date : 2018-09-03
Metal Cutting Theory And Practice written by David A. Stephenson and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-09-03 with Technology & Engineering categories.
A Complete Reference Covering the Latest Technology in Metal Cutting Tools, Processes, and Equipment Metal Cutting Theory and Practice, Third Edition shapes the future of material removal in new and lasting ways. Centered on metallic work materials and traditional chip-forming cutting methods, the book provides a physical understanding of conventional and high-speed machining processes applied to metallic work pieces, and serves as a basis for effective process design and troubleshooting. This latest edition of a well-known reference highlights recent developments, covers the latest research results, and reflects current areas of emphasis in industrial practice. Based on the authors’ extensive automotive production experience, it covers several structural changes, and includes an extensive review of computer aided engineering (CAE) methods for process analysis and design. Providing updated material throughout, it offers insight and understanding to engineers looking to design, operate, troubleshoot, and improve high quality, cost effective metal cutting operations. The book contains extensive up-to-date references to both scientific and trade literature, and provides a description of error mapping and compensation strategies for CNC machines based on recently issued international standards, and includes chapters on cutting fluids and gear machining. The authors also offer updated information on tooling grades and practices for machining compacted graphite iron, nickel alloys, and other hard-to-machine materials, as well as a full description of minimum quantity lubrication systems, tooling, and processing practices. In addition, updated topics include machine tool types and structures, cutting tool materials and coatings, cutting mechanics and temperatures, process simulation and analysis, and tool wear from both chemical and mechanical viewpoints. Comprised of 17 chapters, this detailed study: Describes the common machining operations used to produce specific shapes or surface characteristics Contains conventional and advanced cutting tool technologies Explains the properties and characteristics of tools which influence tool design or selection Clarifies the physical mechanisms which lead to tool failure and identifies general strategies for reducing failure rates and increasing tool life Includes common machinability criteria, tests, and indices Breaks down the economics of machining operations Offers an overview of the engineering aspects of MQL machining Summarizes gear machining and finishing methods for common gear types, and more Metal Cutting Theory and Practice, Third Edition emphasizes the physical understanding and analysis for robust process design, troubleshooting, and improvement, and aids manufacturing engineering professionals, and engineering students in manufacturing engineering and machining processes programs.