Strengthening Process for Metals and Alloys

Strengthening is a process to improve or reduce the mechanical properties of a material inclusive of yield strength and hardness to suit the needs of our application. The main principle of the strengthening mechanism is by reducing the mobility of dislocations; it will reduce the occurrence of plastic deformation and thus will strengthen the material. There are four main strengthening mechanisms applicable to metals and alloys
1. Work Hardening
2. Solid Solution Strengthening
3. Precipitation Hardening
4. Grain Boundary Strengthening

Single-Acting and Double-Acting Pumps

Single-Acting and Double-Acting Pumps

A single-acting pump is one that takes a suction, filling the pump cylinder on the stroke in only one direction, called the suction stroke, and then forces the liquid out of the cylinder on the return stroke, called the discharge stroke. A double-acting pump is one that, as it fills one end of the liquid cylinder, is discharging liquid from the other end of the cylinder.On the return stroke, the end of the cylinder just emptied is filled, and the end just filled is emptied.

Why do we need Material Science and Metallurgy in Mechanical Engineering

Most of us has got a question that Why do we need Material Science and Metallurgy in Mechanical Engineering?

But there is a big need to know the material properties of any Project. These properties will decide the capabilities of our Project.

List of Material Properties
Tensile Strength
Compressive Strength
Shear Strength
Yield Strength
Ductility
Poisson's Ratio
Youngs Modulus
Specific Weight
Specific Modulus
We all know that what these are all

Advantages of Mechanical Engineering

As we have discussed so many parts of Mechanical engineering, we should know what are its Advantages and Disadvantages.
Here are some Advantages
Mechanical engineers are found in almost all sectors of industry. So, employment prospects are good. Also, because it is a core engineering discipline, having a a great knowledge in mechanical engineering enables you to enter fields or pursue advanced study in other areas such as bioengineering, environmental engineering, and nanotechnology............
Dont think that these are the only advantages, we can discuss thousands of Advantages.

fell free to comment

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Heat Transfer modes

there are 3 types of Heat transfer modes.
with these modes only heat transfers
they are

Heat Conduction

Heat Convection

Heat radiation

Need of Mechanical engineering and engineers

Applications of Mechanical Engineering and engineers

Mechanical engineers are involved in the design and construction of various pieces of equipment like aircrafts, spacecrafts, and automobiles, stationary structures like building and bridges and industrial machinery. Due to the fact that mechanical engineers have to deal with a wide range of issues relating to different fields during the course of their work, the mechanical engineering program is prepared to provide them with the basic knowledge of different areas of study.

Just as chemical engineers strive to make different chemical processes cost-effective, mechanical engineers also strive to make the production and maintenance of different machines economical and efficient. Mechanical engineers also have to deal with one additional issue. The machines designed and manufactured by these mechanical engineers will be used by general community who do not have any knowledge about their operation. Hence, they will have to consider the safety and durability factors of these machines also while designing them.

Areas of Study Of Mechanical Engineering

The main areas of study that mechanical engineering looks into are:

• Design
  • Drafting and analysis – For this purpose it uses design softwares like Pro-E, Catia, Ansys and AutoCAD.
  • Design of various mechanisms – In this purpose, the kinematics and dynamics of a mechanism are taken into account and a proper design is drafted for the mechanism.

• Manufacture
  • Solid Mechanics
  • Strength of Materials

• Statics and Dynamics
• Heat-related Studies
  • Thermodynamics
  • Heat Transfer
  • Energy Conversion
  • Refrigeration and Air Conditioning
• Fluid Mechanics, Hydraulics and Pneumatics
• Instrumentation and Measurement

Mechanical engineering is finding more and more applications these days in other areas of engineering also. The most significant of these is the field of robotics. Robotics has become an important area of study due to the fact that more and more processes are getting automated these days. Mechanical engineers are handed the task of manufacturing assembly lines of robots for different operations and controlling them through pre-written programs to make the process of manufacture less human dependant, and more efficient and economical.