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Abstract

nLaser-assisted machining (LAM), an alternative method of fabricating hard-to-machine materials, like ceramics, composites, Titanium alloy, Nickel based alloy are being developed and widely utilized in aerospace, automotive, medical and nuclear industries due to their special properties. These materials posing many challenges when machined with the help of Conventional methods of machining. Conventional methods of machining these materials are found to be uneconomical. Among the various external energy assisted machining methods, laser assisted machining (LAM) has received the more attention within the metal cutting domain and few of research was carried during the recent years. Laser assisted machining uses a focused laser beam to heat local areas of the workpiece and remove softened material from the ductile region, leaving high quality and crack-free surfaces. The study of LAM for hard to machine materials has been attracting progressively more interest from researchers in academia and industry. The study of machining mechanisms for different hard-to- machine materials therefore becomes very important in LAM. Currently LAM has been successfully applied in major mechanical machining processes such as turning, milling, grinding, and some non- traditional mechanical machining processes such as electrochemical machining and water jet machining. This paper is aimed to review and summarize the possible use of LAM for hard to machine materials. The review also presents a perspective on future development trends for laser assisted machining technology.n

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nNew developments in material science and its technologies find their best fulfilling areas in aircraft and space vehicles. The aviation and space industry has often been a catalyst for the development and innovation of a new material framework in its construction. The basic parameters for aerospace development are weight reduction, system-specific requirements, and low cost. Materials have an impact on the entire life cycle of an airplane, from the design phase of the production of their product to the end of their lives. Aviation industry is one of the foremost adopters of advanced composite materials. Composite materials have changed the outline of the aircraft industry. Composite materials are complex in nature and it is a combination of two or more substances that subsequently increases the strength and efficiency of materials. From the Boeing industry to the military aircraft industry every aircraft is using these composites for getting more benefits. Composites have provided various solutions of material and its various types are available such as-ceramic matrix, metal matrix, polymer matrix composites etc. Recent developments in aircraft design can be seen in the Bombardier C-series and Airbus 3820. In this paper, review of current materials and composite materials is discussed and composite material will be the future in aircraft manufacturing is explainedn

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