Laser cutting speed and power are related to the kerf width and slow machining speed increases the contact time between the laser beam and the work piece surface. Mtu engine and turbine union friedrichshafen is a brand of rollsroyce power systems. In another report commerciallyavailable ceramic tiles were cut using a co 2 laser cutting machine, with the object of producing a laser beam machining lbm database that would contain the. Rock excavation tools the national academies press. Today we will learn about laser beam machining principle, working, equipments, application, advantages and disadvantages with its diagram. Jain, department of mechanical engineering, iit kanpur. Control parameters optimization of laser beam machining using. Chemistry of materials nptel online videos, courses. Advanced machining processes nptel online videos, courses iit video lectures.
The software creates simulated computer models of structures, electronics, or machine components. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Nptel provides elearning through online web and video courses various streams. Nd stands for neodymium rare earth element and yag stands for yttrium aluminum garnet y3al5 o12. How laser beam welding works laser beam welding process laser beam welding setup. Heat affecting zone analysis of polycarbonate in laser beam. Short notes for gate mechanical engineering laser beam. Sharma, department of mechanical engineering, iit roorkee. Laser beam machining lbm is a non conventional machining manufacturing process, a form of machining, in which a laser is directed towards the work piece. Now electron beam machining is mostly done in the vacuum atmosphere for the very simple reason i. In contrast to some other processes, laser operates using high energy photons therefore there is not a typical tool as the laser beam directly targets. Nov 05, 2014 laser beam machining used light energy from a laser to remove material by vaporization and ablation energy is concentrated optically laser emits either continuous or pulsed light beam 5 source.
In this sense, they are no more unconventional or nontraditional. See more ideas about finite element, finite element. It finds wide applications in various industries like space tech, automobiles, avionics, shipbuilding and many others manufacturing process. Apr 21, 2017 laser material interactions a great advantage of laser machining is capability to machine any kind of material, not necessarily conductive, depending on laser intensity and interaction time.
Laser beam machining lbm is one amongst the foremost widely used thermal energy based noncontact kind advance machining method which may be applied for nearly whole vary of materials. Download the seminar report for laser beam machining. Laser beam machining lbm is one of the most widely used thermal energy based noncontact type advance machining process which can be applied for almost whole range of materials. Notes on electron beam machining ebm me mechanical. Explain the principle, construction and working of electron beam machining.
The processes can include laser drilling, cutting, grooving, writing, scribing, ablation, welding, cladding, milling, and so on. Additive manufacturing technologies 20 electric discharge machining 439 electroforming 443 electron beam machining 446 electroplating 452 etching 483 eutectic bonding 488 induction heating 692 ion beam machining 717 laser ablation 736 laser beam machining 739 microwave radiation 877 physical vapor deposition pvd. The swayam prabha has been conceived as the project for using the 2 gsat15 transponders to run 32 dth channels that would telecast high quality educational programmes on 24x7 basis. Ecg, ech, ecde and stem electron beam, plasma beam and ion beam machining. The machining results of laser cutting depend on both machining process parameters and laser parameters. Milling is a process performed with a machine in which the cutters rotate to remove the material from the work piece.
In laser beam machining, a laser beam is focussed onto the targetworkpiece sur. Laser beam machining is a thermal machining process which uses laser beam to produce heat. Ansys develops and markets finite element analysis software used to simulate engineering problems. Lecture 19 electric discharge machining edm process lecture 20 diesinker edm and wire cut electric discharge machining wedm lecture 21 variant processes in edm lecture 22 electro. There is hardly any facet of manufacturing that is not touched by the automated cnc. Now when you are using the long pulse laser beam for micromachining processes, there are. This process uses thermal energy to remove material from metallic or nonmetallic surfaces. Solid state welding and application in aeronautical industry.
Advanced machining processes nptel online videos, courses. The light produced is a coherent, monochromatic and collimated beam which can be focused to small spots of diameter of 0. It currently offers both undergraduate and postgraduate degrees. Parametric analysis of cutting parameters for laser beam. Electro chemical discharge machining ecdm laser beam machining lbm equipment and process parameters in lbm electrochemical machining ecm ecm kinematics and tool design the subsystems in ecm, advantages and applications variant processes in ecm. Me mechanical is an online portal for mechanical engineers and engineering students. Home mechanical engineering college of science and. Hence, it was realize to develop some nonconventional machining methods known as advanced machining processes. In all these processes, except ion beam machining, abrasion of the workpiece takes place in a controlled fashion such.
Depending upon the intensity of heating the workpiece can melt and vaporize. Mar 17, 2016 electron beam machining ebm is a thermal process. Lecture 19 electric discharge machining edm process lecture 20 diesinker edm and wire cut electric discharge machining wedm lecture 21 variant processes in edm lecture 22 electro chemical discharge machining ecdm lecture 23 laser beam machining lbm lecture 24 equipment and process parameters in lbm. A co2 laser is one of the more powerful types of laser used in laser beam machining. Me mechanical online portal for mechanical engineering.
Ultrasonic machining, water jet machining, abrasive water jet machining. Fixed ended beams, simply supported beams, propped cantilever beams, cantilever beams etc. How laser beam machining works manufacturing iepurdue. Laser beam machining lbm is a non conventional machining manufacturing process, a form of machining, in which a laser is directed towards the work piece for machining. Air quality engineering air filtration systems, air. Laser beam machining lbm is a nonconventional machining process, which broadly refers to the process of material removal, accomplished through the interactions between the laser and target materials. Lbm is one of the advanced machining processes which are used for shaping almost whole range of engineering materials.
Pdf a laser beam machining lbm database for the cutting. Advanced machining processes online course video lectures by. There are five different types of welded joints for bringing two parts together for joining. Invest in an air purification system from air quality engineering its a smart idea. Lidar is similar to radar but unlike radar, lidar uses short pulses of coherent laser light, with very short wavelengths and high instant capacity, so its laser beam does not disperse while traveling away from. In fact, its a subtractive manufacturing process in which a laser beam is used for cutting through the metals and other materials for getting the desired product. Liquidassisted laser beam machining lalbm process is used as an alternative to existing laser beam machining lbm process to address the problems associated with the extreme heat of the laser. There are different type of beams depending upon the material and end conditions. Download link is provided and students can download the anna university me6004 unconventional machining processes ump syllabus question bank lecture notes syllabus part a 2 marks with answers part b 16 marks question bank with answer, all the materials are listed below for the students to make use of it and score good maximum marks with our study materials.
A continuous cut is produced by moving the laser beam or workpiece under cnc control. Abstract to improve and optimize the responses of a laser beam machining process, the various input machining control parameters are to be set at an optimal value. Pdf me6004 unconventional machining processes ump books. It offers its competences from macro machining to micro and nano machining of simpletocomplex shapes. The department of mechanical engineering is one of the oldest departments at iit madras.
These lasers can generate 400 to 1,500 watts of power, which can cut through 1inch 2. Electron beam is generated in an electron beam gun. Provides information about academic calendar, notices, gtu results, syllabus,gtu exams,gtu exam question papers,gtu colleges. Laser beam machining lbm, state of the art and new. Nptel has been successful in creating the largest online repository in the world of courses in engineering. Heat affecting zone analysis of polycarbonate in laser beam machining using response surface methodology girish dutt gautam department of mechanical engineering jaypee university of.
Review on laser beam machining process parameter optimization. Ramesh narayanaswamy is a visiting faculty in the department of mechanical engineering, iit kanpur. Rock excavation tools disintegrate and remove the rock from boreholes and tunnels by four basic mechanisms. Laser beam machining lbm has proven its applications and advantages over almost all the range of engineering materials. A coaxial gas jet is used to eject the molten material and create a kerf.
Singh, balbir singh modern machining processes presents unconventional machining methods which are gradually commercial. Civil engineering cpf plots showing location of pollutants. Laser beam is focussed for melting and vaporizing the unwanted material from the parent material. Ravindra reddy associate professor department of mechanical engineering chaitanya bharathi institute of technology definition. Monitoring of the ceramic kerf during the laser cutting. An overview is given of the state of the art of laser beam machining in general with special emphasis on applications of short and ultrashort lasers. This book addresses issues essential to unconventional machining processes, covering all modern. Five types of welded joints are butt joint, corner joint, lap joint, teejoint and edge joint. It also includes micronanofinishing processes viz, abrasive flow finishing, magnetic abrasive finishing, etc. Advanced machining processes online course video lectures. Singh, balbir singh modern machining processes presents unconventional machining methods which are gradually commercial acceptance. Me faculty receive department of defense muri awards. These days the cnc machines are found in almost all industries, from a small scale industry to big companies. We publish articles on various engineering and technology topics.
Analysis of process parameters of plasma arc cutting using design of experiment a thesis submitted in partial fulfillment for the requirement for the degree of master. Manufacturing processes i nptel online videos, courses. The tool uses mirrors that direct the proton laser beam to the desired cutting location. In laser welding the trend is to apply optical sensors for process control. Advanced machining processes video course course outline there is a need for machine tools and processes which can accurately and easily machine the most difficultto machine. Part 2 deals with thermal machining processes for example, electric discharge machining, laser beam machining, electron beam machining, etc. Core experience for spartan engineers our students are involved in a livinglearning community where they can sharpen their problemsolving skills, connect with resources, interact with fellow engineers. May 31, 2018 laser beam machining lbm is one amongst the foremost widely used thermal energy based noncontact kind advance machining method which may be applied for nearly whole vary of materials. Lecture 34 tool electrodes and dielectric fluids and electron beam machining lecture 35 mechanics of electron beam machining process lecture 36 functional characteristics of ebm process edit lesson. All aspects of mechanical, electrochemical and thermal processes are comprehensively covered. Laser beam machining lbm is one amongst the foremost widely used thermal energy based noncontact kind advance machining method which may be applied for nearly whole vary of. The thrill that comes with owning and riding a dirt bike is quite phenomenal.
The construction and working principle of the electron beam gun. How laser beam welding works laser beam welding process. Here the lasing material is in the form of a solid ruby. The main operating parameters associated with laser assisted machining are. Learn for free, pay a small fee for exam and get a certificate. Main parts, principle, working with application april 11, 2020 april 11. Nptel online certification courses since 20, through an online portal, 4, 8, or 12week online courses, typically on topics relevant to students in all years of higher education along with. If you have a need for a system to clean air in your home or workplace, we have a product to do the job. Laser power, spot diameter of the laser beam, cutting speed, feed rate and depth of. Laser beam machining lbm tutorial of advanced manufacturing processes course by prof a. Lecture 34 tool electrodes and dielectric fluids and electron beam machining lecture 35 mechanics of electron beam machining process lecture 36 functional characteristics of ebm process edit lesson lecture 37 introduction of laser beam machining process lecture 38 material removal rate of lbm. Beams are characterized by their profile shape of crosssection, their length, and their material.
Department of mechanical and industrial engineering. Mechanical engineering indian institute of technology madras. To provide exposure to the students with handson experience on various basic engineering practices in civil, mechanical, electrical and electronics engineering. Laser beam welding is a welding process that uses a laser beam to melt and vaporize material. Laser beam machining can be used for cladding, cutting, welding and drilling. Apr, 2015 school of industrial engineering, purdue university. Nptel, online courses and certification, learn for free.
This may be done varying direction on one or several axes, cutter head speed, and. Here a steam of high speed electrons impinges on the work surface so that the kinetic energy of electrons is transferred to work producing intense heating. Current research and development in laser beam machining lbm. Milling is the process of machining using rotary cutters to remove material by advancing a cutter into a work piece.
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