Mechanical Engineer Portal

Mechanical Engineers Portal

Friday, June 16, 2017

About Mechanical Engineer



Mechanical Engineering

Introduction:
Mechanical engineering is the discipline that applies engineering, physics, and materials science principles to design, analyze, manufacture, and maintain mechanical systems. It is the branch of engineering that involves the design, production, and operation of machinery. It is one of the oldest and broadest of the engineering disciplines.
The mechanical engineering field requires an understanding of core areas including mechanics, kinematics, thermodynamics, materials science, structural analysis, and electricity. In addition to these core principles, mechanical engineers use tools such as computer-aided design (CAD), and product life cycle management to design and analyze manufacturing plants, industrial equipment and machinery, heating and cooling systems, transport systems, aircraft, watercraft, robotics, medical devices, weapons, and others.

History:
In ancient Greece, the works of Archimedes (287–212 BC) influenced mechanics in the Western tradition and Heron of Alexandria (c. 10–70 AD) created the first steam engine.
In China, Zhang Heng (78–139 AD) improved a water clock and invented a seismometer, and Ma Jun (200–265 AD) invented a chariot with differential gears.
The medieval Chinese horologist and engineer Su Song (1020–1101 AD) incorporated an escapement mechanism into his astronomical clock tower two centuries before escapement devices were found in medieval European clocks. He also invented the world's first known endless power-transmitting chain drive.
During the Islamic Golden Age (7th to 15th century), Muslim inventors made remarkable contributions in the field of mechanical technology. Al-Jazari, who was one of them, wrote his famous Book of Knowledge of Ingenious Mechanical Devices in 1206, and presented many mechanical designs. He is also considered to be the inventor of such mechanical devices which now form the very basic of mechanisms, such as the crankshaft and camshaft.
During the 17th century, important breakthroughs in the foundations of mechanical engineering occurred in England. Sir Isaac Newton formulated Newton's Laws of Motion and developed Calculus, the mathematical basis of physics. Newton was reluctant to publish his works for years, but he was finally persuaded to do so by his colleagues, such as Sir Edmond Halley, much to the benefit of all mankind. Gottfried Wilhelm Leibniz is also credited with creating Calculus during this time period.
During the early 19th century industrial revolution, machine tools were developed in England, Germany, and Scotland. This allowed mechanical engineering to develop as a separate field within engineering. They brought with them manufacturing machines and the engines to power them. The first British professional society of mechanical engineers was formed in 1847 Institution of Mechanical Engineers, thirty years after the civil engineers formed the first such professional society Institution of Civil Engineers. On the European continent, Johann von Zimmermann (1820–1901) founded the first factory for grinding machines in Chemnitz, Germany in 1848.
In the United States, the American Society of Mechanical Engineers (ASME) was formed in 1880, becoming the third such professional engineering society, after the American Society of Civil Engineers (1852) and the American Institute of Mining Engineers (1871). The first schools in the United States to offer an engineering education were the United States Military Academy in 1817, an institution now known as Norwich University in 1819, and Rensselaer Polytechnic Institute in 1825. Education in mechanical engineering has historically been based on a strong foundation in mathematics and science.

Fundamental subjects of Mechanical Engineering:
  • Mathematics (in particular, calculus, differential equations, and linear algebra)
  • Basic physical sciences (including physics and chemistry)
  • Statics and dynamics
  • Strength of materials and solid mechanics
  • Materials Engineering, Composites
  • Thermodynamics, heat transfer, energy conversion, and HVAC
  • Fuels, combustion, Internal combustion engine
  • Fluid mechanics (including fluid statics and fluid dynamics)
  • Mechanism and Machine design (including kinematics and dynamics)
  • Instrumentation and measurement
  • Manufacturing engineering, technology, or processes
  • Vibration, control theory and control engineering
  • Hydraulics, and pneumatics
  • Mechatronics, and robotics
  • Engineering design and product design
  • Drafting, computer-aided design (CAD) and computer-aided manufacturing (CAM)

Sub disciplines of Mechanical Engineering:
  • Mechanics: study of force and their effect on matter
    • Sub disciplines of mechanics further include
      • Statics
      • Dynamics
      • Mechanics of materials
      • Fluid mechanics
      • Kinematics
  • Mechatronics: study of mechanics, electronics and software engineering.
  • Structural analysis: Structural analysis is the branch of mechanical engineering (and also civil engineering) devoted to examining why and how objects fail and to fix the objects and their performance.
  • Design and drafting: study the mechanical design/equipment with the help of CAD/CAM software.
Areas of research in Mechanical Engineering:
  • Friction stir welding
  • Composite materials
  • Mechatronics
  • Nanotechnology
  • Finite Element Analysis(CAD/CAM)
  • Biomechanics
  • Computational Fluid Dynamics(CFD)
  • Acoustical Engineering

No comments:

Post a Comment

themechanicalguru.com. Powered by Blogger.