CRAZY AMIGO

INTRODUCTION                      SHOT PEENING is a method of cold working in which compressive stresses are induced in the exposed surface layers of metallic parts by the impingement of a stream of shot, directed at the metal surface at high velocity under controlled conditions. It differs from blast cleaning in primary purpose and in the extent to which it is controlled to yield accurate and reproducible results. Although shot peening cleans the surface being peened, this function is incidental. The major purpose of shot peening is to increase fatigue strength. The process has other useful applications, such as relieving tensile stresses that contribute to stress-corrosion cracking, forming and straightening of metal parts, and testing the adhesion of silver plate on steel.                   The t...

INTRODUCTION The continuously advancing technology of portable electronic devices requires more flexible batteries to power them. Batteries power a wide range of electronic devices including phones, laptop computers and medical devices such as cardiac pacemakers and defibrillators. With the ever increasing demand for efficiency and design, there is a need for ultrathin, safe and flexible energy storage options. A paper battery is a flexible, ultra- thin energy storage and production device formed by combining carbon nanotubes with a conventional sheet of cellulose based paper. A paper battery acts as both a high energy battery and supercapacitor, combining two components that are separate in traditional electronics. This combination allows the battery to provide long term, steady power production and bursts of energy. Through the use of super capacitors, batteries can be made that will deliver renewable energy from bodily fluids such as blood or sweat. This technology can be grea...

IINTRODUCTION           Refrigeration is the science of producing and maintaining temperatures below that of the surrounding atmosphere. It finds application in almost all fields for the purpose of temperature control. Until the beginning of the twenty-first century, CFC’S were widely used as refrigerants. The use of CFC’s is banned acknowledging its harmful effects on the environment. This led to the evolution of HCFC’s and HFC’s. However these too have disadvantages. Both have high cost of production and contribute to global warming. The development of alternative cheap and green refrigeration techniques has thus become the priority for the future. Thermo Acoustic Refrigeration (TAR) is one such green idea for refrigeration. Lord Rayleigh [1] was the first to give a thoroughly qualitative description of thermo-acoustic effects in 1887. After this, the subject remained untouched until 1970 when scientists like Rott, Hofler and G. W. Swift signaled its revi...