Ultrasonic plastic welding is the joining or reforming of thermoplastics through the use of heat generated from highfrequency mechanical motion. Welding joints different metals with the help of a number of processes in which heat is supplied either electrically or by mean of a gas torch. Mechanical modeling of ultrasonic welding analytical and numerical modeling of spot ultrasonic welding on thin metal foils is motivated by a new ultrasonic rapid prototyping. Resistance welding is a liquid state welding process in which the metal to metal joint created in liquid or molten state. It is designed for welding using copper wire galvanized sheets, sheets with aluminum and other special protective coatings. The phenomenon, discovered by lavrentiev at the end of the ww ii 122, is an efficient way to bond together two similar or dissimilar materials. There are four basic process variations of ultrasonic welding, used to produce different types of welds.
Ultrasonic welding is a versatile and powerful joining technique in the microelectronic packaging industry because of the low temperature, high yield rate and flexibility of the process. Studies on ultrasonic welding of polycarbonate and acrylonitrile butadiene styrene blends chinnadurai t. Similarly, these processes where no filler material is used, solid state welding processes like the friction welding is spot pack welding. Introduction to gas welding, cutting, arc welding and equipments.
Explore plastic welding with free download of seminar report and ppt in pdf and doc format. No solvents, adhesives, mechanical fasteners, or other consumables are required, and finished assemblies are strong and clean. Part of themechanical engineering commons, and themetallurgy commons. Nptel video lecture topic list created by linuxpert systems, chennai nptel video course mechanical engineering welding engineering subject coordinator dr. Ultrasonic welding ultrasonic welding is a unique method of joining two parts together without using additional fasteners, adhesives or mechanical features like snap fit or living hinges. Types of welding manufacturing technology mechanical. This technique was discovered during efforts to manipulate iron into useful shapes. At the end of this lecture, you will learn all types of solid state welding techniques along with applications. Ultrasonic welding technology was invented and patented in the early 1930s and was originally used for the solidstate welding of metals 41. Welded blades were developed in the 1st millennium ce, the most famous being those produced by arab armourers at damascus, syria. Explosive welding can be considered as a kind of hotpressing. Welding, technique used for joining metallic parts usually through the application of heat. Ultrasonic welding usw is a solidstate welding process that produces a weld by local application of high frequency vibratory energy.
Jun 07, 2018 at the end of this lecture, you will learn all types of solid state welding techniques along with applications. Ultrasonic welding is well suited for a large number of automotive components, where high part counts and appropriate strength are required. They are mainly used to assemble many parts to make a system. In most cases, the plastics welder is a pneumatic press although it could be hydraulic or mechanical. The vibrations, produced by a welding sonotrode or horn, as it is generally known, are used to soften. The boundaries more or less fade at the weld, and amalgamated crystals develop across them. Industrial personnels operatives have completed major project works associated with the installation of pipework for the national gas distribution network, amongst other major clients. It is accomplished by converting highfrequency electrical energy into highfrequency mechanical motion. Depending on the application, the welding results depend upon various parameters. Ultrasonic welding is a common industrial technique for binding plastics, using highfrequency ultrasonic acoustic vibrations at a frequency of 15 to 70 khz to the parts being welded together.
Department of metallurgical and materials engineering. Welding engineering online course video lectures by iit. Ultrasonic welding ultrasonic welding posted by unknown. Weldability, newer welding methods like plasma arc, laser beam, electron beam, ultrasonic, explosive and friction welding. Process and quality characterization for ultrasonic welding of lithiumion batteries by seungjae lee a dissertation submitted in partial fulfillment of the requirements for the degree of doctor of philosophy mechanical engineering in the university of michigan 20 doctoral committee. Technical university of liberec, faculty of mechanical engineering, department of engineering technology, czech republic abstract. More recently, electronbeam welding, laser welding, and several solidphase processes such as diffusion bonding, friction welding, and ultrasonic joining have been developed. In 70s, the explosive welding was intensively used in attempts to develop an economically effective. In 1948 a new gasshielded process utilized a wire electrode that was consumed in the weld. A strong, reliable molecular bond is formed between the layers.
The contributors to the book represent a team of leading experts in the field. It is a thermoelectric process in which heat is generated at the interface surfaces of welding plates due to electric. Robotics courses are spread across mechanical engineering, electrical engineering, and computer science departments. Apply to mechanical engineer, welder, mechanical designer and more. We are looking for person with previous experience in the same.
Basic mechanical engineering covers a wide range of topics and engineering concepts that are required to be learnt as in any undergraduate engineering course. Ultrasonic systems and modules for continuous joining of nonwovens and web material operate economically. It starts with a simple model rod, covering the sound field, energy conversion and energy transmission. The welding can proceed with or without the application of external heat. Nptel mechanical engineering video lecture online study. Ultrasonic welding is a plastics welding process, in which two work pieces are bonded as a result of a pressure exerted to the welded parts combined with application of high frequency acoustic vibration ultrasonic. A balamurugan assistant professor, department of mechanical engineering ganesh college of engineering, salem 636 111, tamil nadu, india. Plastics assembly is a fast, clean, efficient, and repeatable process that consumes very little energy. Ultrasonic metal welding seminar report, ppt, pdf for. Gao is with the department of mechanical engineering, tufts university, medford, mass.
Nptel material is available for free on nptel website. Ultrasonic welding an overview sciencedirect topics. So, that is the basic advantage of using some ultrasonic source, ultrasonic. Nocnon traditional abrasive machining processes ultrasonic, abrasive jet abrasive water jet machining nocoperations management nocphase equilibria in materials nature and properties of materialsii. They cannot be separated easily by application of forces. Ultrasonic welding is a welding process in which ultrasonic waves or vibrations are used to generate heat for welding.
Dwivedi,department of mechanical engineering,iit roorkee. Compared with other welding methods which include heat staking, hot plate welding, spin welding, and vibration. Mechanical engineering 155 courses linuxpert systems. Also explore the seminar topics paper on ultrasonic metal welding with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019 2020.
The welding fabrication area is home to a miller sycrowave 350 tigstick welder, a miller 250 mig welder set up for mild steel, and a thermal dynamics handheld plasma cutter. Complete system with functional units for mechanical engineering, modular and easy to. Although ultrasonic metal welding is wellqualified for battery manufacturing, there is a lack of scientific quality guidelines for implementing ultrasonic welding in volume production. Ultrasonic welding is also characterised by the quality, strength and accurate reproducibility of the welds. Welding processes professor murugaiyan amirthalingam. And then we will discuss the ultrasonic pulse laser welding which is different from the conversional. The process of carburization of iron to produce hard steel was. If you are not able to download lectures due to bandwidth constraints, you can obtain the courses in dvds by paying a nominal fee to cover the cost of storage media and distribution.
This book is written to serve the needs of under graduate students embarking introductory course in welding technology. Mar 27, 2017 today we will learn about ultrasonic welding principle, working, equipments application, advantages and disadvantages with its diagram. Quisque sit amet magna eu augue ultricies elementum vitae ut odio. Welding is the method of combining together two pieces of metal, so that bonding, along with significant interatomic penetration takes place at their initial boundary surfaces. Ultrasonic welding setup the process of ultrasonic welding of thermoplastic polymers was extensively investigated in the last decades. Ultrasonic means those vibration waves which have frequency above the normal hearing range. Tig gtaw and mig gmaw welding, resistance welding and thermit welding. The parts are squeezed together with a certain amount of static force. This book is designed to meet the requirement of revised syllabus prescribed by the anna university. Tig welding has become a popular choice of welding processes when high quality, precision welding is required.
Modeling, sensing and control of gas metal arc welding, 2003. The vibrations create a solidstate weld to the pieces that are being held together by pressure. Ultrasonic welding is an industrial technique whereby highfrequency ultrasonic acoustic vibrations are locally applied to workpieces being held together under pressure to create a solidstate weld. Dec 07, 2011 in ultrasonic welding, frictional heat produced by the ultrasonic waves and force is used for the joining process.
Divided into three parts, this book lays emphasis on explaining the logic and physics of critical problems to develop analytical skills in students. Welding is carried out by the use of pressure or heat or both, and with or without additional metal. Lorem ipsum dolor sit amet, consectetur adipiscing elit. The quality of welding or mechanical engineering is crucial to project execution and management. Nptel provides elearning through online web and video courses various streams. Apr 17, 2020 explore plastic welding with free download of seminar report and ppt in pdf and doc format. Also explore the seminar topics paper on plastic welding with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year. So, if you machine it, if you polish the lead surface and. These welding are also known as liquidsolid welding process. Welding is a process of joining two metal pieces by the application of heat. Pressure welding, friction welding, ultrasonic welding. Rather large number of mostly experimental studies performed provided good insight into the nature of the process.
Single pneumatic cylinder and solenoid valve are provided. In ultrasonic welding, high frequency vibrations are combined with pressure to join two materials together quickly and securely. Today we will learn about ultrasonic welding principle, working, equipments application, advantages and disadvantages with its diagram. Tig welding is a commonly used high quality welding process. Also explore the seminar topics paper on plastic welding with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year 2019 2020. Sundaravalli, suchitra publications the book welding technology for engineering and technology studies. Pneumatic ultrasonic welding machine mechanical project pneumatic welding machine synopsis in our project pneumatic welding machine is beings with an introduction to welding the various components automatically. A balamurugan assistant professor, department of mechanical engineering. Nptel mechanical engineering video lecture online study material. Ultrasonic waves 15 to 60 khz are transferred to the material under pressure with a sonometer. Joining of materials joining includes welding, brazing, soldering, adhesive bonding of materials. Explore ultrasonic metal welding with free download of seminar report and ppt in pdf and doc format. Basically welding may be classified into three types.
Ultrasonic welding, for thermoplastic injection moulded components, is a process that uses mechanical vibrations above the audible range. Welding research mechanical modeling of ultrasonic welding. In a plastics welder the parts are vibrated in a compressive manner. Now, in that you have manual or shielded metal arc welding process that is known as. Pdf optimization of ultrasonic welding parameters for. Welding is the least expensive process and widely used now a days in fabrication.
The difference between ultrasonic plastics welding and metals welding is one of 90 degrees. High frequency ultrasonic wave propagation and attenuation measurements were made in order to estimate the dynamic mechanical moduli of the polymers. International journal of engineering and innovative technology ijeit volume 4, issue 5, november 2014 181 analysis of bonding strength of ultrasonic welding process vijay singh pal, pavan agrawal abstract. Welding research mechanical modeling of ultrasonic. Adepts scara robots cognex insight robot barrett technology manipulator history of robotics. Characterization of joint quality in ultrasonic welding of. Ultrasonic welding mechanical engineering learn and. Explosive welding an overview sciencedirect topics. Ultrasonic welding is a solidstate joining process that produces joints by the application of highfrequency vibratory energy in the work pieces held together under pressure without melting. In ultrasonic welding, there are no connective bolts, nails, soldering materials, or.
In ultrasonic welding, highfrequency mechanical oscillations cause molecular and interface friction in the joining zone. Ultrasonic welding is an industrial technique whereby high frequency ultrasonic acoustic vibrations are locally applied to work pieces being held together under pressure to create a solid state weld. Plastic welding seminar report, ppt, pdf for mechanical. Also explore the seminar topics paper on ultrasonic metal welding with abstract or synopsis, documentation on advantages and disadvantages, base paper presentation slides for ieee final year mechanical engineering me or production automobile students for the year.
This book is designed to meet the requirement of revised syllabus. In handbook of plastics joining second edition, 2009. Jack hu ebook edition is available on the asme digital collection. Analysis of bonding strength of ultrasonic welding process. Dwivedi coordinating institute iit roorkee subtitles available unavailable lecture lecture lecture lecture lecture lecture lecture lecture lecture lecture lecture.
They produce permanent joint between the parts to be assembled. Continuous ultrasonic welding herrmann ultrasonics. It is commonly used for plastics and metals, and especially for joining dissimilar materials. Nearly all packaging materials and laminates, with a thermoplastic sealing layer or coating, are suitable for the ultrasonic sealing welding process. Nptel syllabus welding engineering web course course outline welding is one most the most commonly used fabrication techniques. Actually ultrasonic vibration directly soften the material by converting the mechanical energy and without much variation in the process temperature. In plastic welding or pressure welding process, the pieces of metal to be joined are heated to a plastic state and then forced together by external pressure. Tig welding tig welding gas tungsten arc welding gtaw is frequently referred to as tig welding. This book seeks to make an original contribution to the knowledge base underpinning ultrasonic metal welding usmw, particularly for the manufacturing of lithiumion liion battery cells, modules, and packs as used in electric vehicles.
Lecture series on manufacturing processes ii by prof. Department of mechanical and industrial engineering. Introduction to robotics nyu tandon school of engineering. Apr 15, 2017 today we will learn about resistance welding principle, types, application, advantages and disadvantages. That mechanical motion, along with applied force, creates frictional heat at the plastic. Comparatively limited research has been performed on ultrasonic welding of cftpcs. For more details on nptel visit nptel related courses. Ultrasonic metal welding overcomes these difficulties by using its inherent advantages derived from its solidstate process characteristics. Welding joints different metals with the help of a number of processes in which heat is supplied either electrically or by mean of a. Paul,department of mechanical engineering, iit kharagpur. This welding can only be used on flat and slightly curved workpieces open on both sides.
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