Sumit Sharma

Composite materials find diverse applications in areas including aerospace, automotive, architecture, energy, marine and military. This comprehensive textbook discusses three important aspects including manufacturing, mechanics and dynamic mechanical analysis of composites. The textbook comprehensively presents fundamental concepts of composites, manufacturing techniques and advanced topics including as advances in composite materials in various fields, viscoelastic behavior of composites, toughness of composites and Nano mechanics of composites in a single volume. Topics such as polymer matrix composites, metal matrix composites, ceramic matrix composites, micromechanical behavior of a lamina, micromechanics and nanomechanics are discussed in detail. Aimed at senior undergraduate and graduate students for a course on composite materials in the fields of mechanical engineering, automobile engineering and electronics engineering, this book: Discusses mechanics and manufacturing techniques of composite materials in a single volume. Explains viscoelastic behavior of composites in a comprehensive manner. Covers fatigue, creep and effect of thermal stresses on composites. Discusses concepts including bending, buckling and vibration of laminated plates in detail. Explains dynamic mechanical analysis (DMA) of composites.

Learn to model your own problems for predicting the properties of polymer-based composites Mechanics of Particle- and Fiber-Reinforced Polymer Nanocomposites: Nanoscale to Continuum Simulations provides readers with a thorough and up-to-date overview of nano, micro, and continuum approaches for the multiscale modeling of polymer-based composites. Covering nanocomposite development, theoretical models, and common simulation methods, the text includes a variety of case studies and scripting tutorials that enable readers to apply and further develop the supplied simulations. The book describes the foundations of molecular dynamics and continuum mechanics methods, guides readers through the basic steps required for multiscale modeling of any material, and correlates the results between the experimental and theoretical work performed. Focused primarily on nanocomposites, the methods covered in the book are applicable to various other materials such as carbon nanotubes, polymers, metals, and ceramics. Throughout the book, readers are introduced to key topics of relevance to nanocomposite materials and structures—supported by journal articles that discuss recent developments in modeling techniques and in the prediction of mechanical and thermal properties. This timely, highly practical resource: Explains the molecular dynamics (MD) simulation procedure for nanofiber and nanoparticle reinforced polymer compositesCompares results of experimental and theoretical results from mechanical models at different length scalesCovers different types of fibers and matrix materials that constitute composite materials, including glass, boron, carbon, and KevlarReviews models that predict the stiffness of short-fiber composites, including the self-consistent model for finite-length fibers, bounding models, and the Halpin-Tsai equationDescribes various molecular modeling methods such as Monte Carlo, Brownian dynamics, dissipative particle dynamics, and lattice Boltzmann methodsHighlights the potential of nanocomposites for defense and space applications Perfect for materials scientists, materials engineers, polymer scientists, and mechanical engineers, Mechanics of Particle- and Fiber-Reinforced Polymer Nanocomposites is also a must-have reference for computer simulation scientists seeking to improve their understanding of reinforced polymer nanocomposites.

This book is the result of Author Coach Satish Purohit's mentoring of seven 'first-time' authors from the book-in-mind stage to the book-in-market stage. The idea was to handhold the authors and familiarise them with the process of creating and selling their own book step-by-step. The authors are Deepak Kotak, Vijayalakshmi Raman, Deepak Kumar Singh, Sumit Sharma, Nara Subramaniam, Jitendra Nath Mahato, and J Lakshminarayanan. Noted author, keynote speaker and time investment strategist Brigadier Sushil Bhasin and Jogesh Jain, India's leading employability coach have written the foreword and afterword of this book. All the contributing authors, who have been called 'mantra givers' on the cover of the book, have independent coaching, training and facilitation businesses. You are invited to engage, interact, and learn from the 7 mantra-givers on www.7mantrasoforganicsuccess.in

Sheet metal forming is a common process to produce various sheet metal based products like cylindrical cups, square cups etc. It has various types of defects which can reduce product quality, but wrinkling is the most critical defect in sheet metal products. Flange wrinkling is very common problem in sheet metal form based products and this is due to undesirable deformation of sheet, thickness and compressive stresses. When drawing process starts and increase draw depth, after certain height the flange region plastically buckles into a number of waves and the process fails down. It was found that small scale industries working in this field have less technical knowledge for forming defects.

Sheet metal forming is a common process to produce various sheet metal based products like cylindrical cups, square cups etc. It has various types of defects which can reduce product quality, but wrinkling is the most critical defect in sheet metal products. Flange wrinkling is very common problem in sheet metal form based products and this is due to undesirable deformation of sheet, thickness and compressive stresses. When drawing process starts and increase draw depth, after certain height the flange region plastically buckles into a number of waves and the process fails down. It was found that small scale industries working in this field have less technical knowledge for forming defects.

Al 6082 is one of the most important alloy present in 6xxx series as a new alloy. This is because of its high strength to weight ratio, good formability, and machinability. In present work, heat treatment on Al 6082 alloy in order to study its effect on thermal and mechanical properties and also optimize it for thermal and mechanical properties using Response Surface Methodology. The process parameters are solutionizing time, aging temperature, and aging time. Solutionization is followed by artificial aging of samples for a period of 90 minutes to 450 minutes. The heating process takes place in Muffle Furnace. The mathematical model for the thermal conductivity, coefficient of thermal expansion and Vickers hardness has been developed. All the mathematical models obtained hold good at 95% confidence level. The optimum parameters will be obtained for thermal & mechanical properties.

The concept Electrochemical machining (ECM) is broadly implemented in manufacturing area for the past two decades because of several advantages e.g. almost negligible tool wear, resistance of W. P. to thermal and mechanical stress and strain and the ease to form complicated shapes in tough material. Several optimization techniques had been implemented for studying the process factors of different non-conventional machining processes. Analysis of surface texture by implementation of RSM had been discussed by authors but they have not included the ROC& MRR. A precise investigation of ROC and MRR is studied in detail. Our aim for the present work is to optimize the independent parameter of ECMM using S1 tool steel also called as shock resistant tool steel, for maximizing the amount of material removal and for minimizing the radial over cut using RSM. The multi-parameter examinations of the MRR and ROC obtained from RSM have been in depth analysed by contour and surface plots. Voltage is maximum effect on machining rate whereas the E. C. largely affects ROC in comparison to other parameters. The optimum performance parameters for ECMM setup are determined for future investigation.

Solar energy has enormous potential to serve for present energy demand of the world. Photovoltaic is an elegant process of converting the sun energy into electricity. Photovoltaic cells become matchless in transforming the sunshine into electrical energy with no air and noise pollutions. In this work an effort had been made for estimating the effects of dust addition and ambient temperature on conversion efficiency of a 62 KWp Rooftop SPV module. The performance has been evaluated by use of Capacity Utilization Factor and Performance Ratio parameters. This work estimating the decrease in the output power and conversion efficiency as a function of dust accumulation & ambient temperature. A multivariate linear regressions (MLR) model is established to estimate the system's output performance with the consideration of conversion efficiency as the dependent variable and ambient temperature and dust exposure day as the independent variables. It was employed in calculating losses in system efficiency due to dust accumulation. The average efficiency reductions due to dust is 0.872%/day, energy loss is 9.935 kWh/m-sq using MLR model.