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Mechanical Engineering

Mechanical Engineering is a branch of engineering that encompasses the generation and application of heat and mechanical power and the design, production, and use of machines and tools. Mechanical engineering involves application of the principles of dynamics, control, thermodynamics and heat transfer, fluid mechanics, strength of materials, materials science, electronics, and mathematics.

500 Questions

What is the EN grade equivalent to A37 material?

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Asked by Wiki User

EN standards for materials are widely used in Europe and other regions. However, A37 is not a designation typically found in European standards like EN. A37 is more likely a designation from ASTM (American Society for Testing and Materials) standards.

In ASTM standards, A37 is not a specific material grade. It's possible that you might be referring to a different ASTM material grade, such as A36, which is a commonly used structural steel grade. A36 steel is often compared to EN 10025-2 S235JR or DIN St37-2 steel, which are equivalents in European standards.

If you could provide more context or clarify the specific material grade you're referring to, I'd be happy to assist you further in finding its equivalent in EN standards.

Dewey decimal classification no of engineering?

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Asked by Wiki User

Engineering is classified under the Dewey Decimal Classification system as 600.

Definition of Stress and strain?

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Asked by Wiki User

Strain*

A rubber band has a original length of 5cm and was pulled longer to 6cm. Thus 1cm difference and we divide difference in length with original length. = 1 divided by 5= 0.2

So in this case, Strain = 0.2 (Strain is a ratio and therefore no units.)

Stress*

Stress is the amount of pull and push force applied over a cross-sectional area and right angle to the action of the force. (The basic S.I. units of stress is N/m2) So, if you have a 20N force applied over an area of 10cm2 at right angle...

Stress = load divided by area

Stress = 20N divided by 0.01m (converting from cm to meter)

Stress = 2000N/m2

Or Stress = 2000Pa = 2kPa

Just remember that Strain* = lenght and Stress* = pressure.

How many types of industrial chiller in the world?

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Asked by Wiki User

there are three type of different chiller

1- Air

2- Water

3- Evaporative Condencer Chiller

By # Zish Siraj From Karachi

00923212170310

What is the difference between tmt 500 and tmt 500 d bars?

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Asked by Wiki User

TMT 500 and TMT 500D bars are both types of Thermo-Mechanically Treated (TMT) steel bars with high tensile strength, commonly used in construction projects. However, there are differences between the two in terms of their manufacturing process and properties:

1. Manufacturing Process:

  • TMT 500: TMT 500 bars undergo a standard thermo-mechanical treatment process involving controlled heating and rapid quenching, followed by self-tempering to achieve the desired mechanical properties. This process imparts the bars with high tensile strength and ductility.
  • TMT 500D: TMT 500D bars undergo an additional process known as Direct Quenching and Tempering (DQT), which involves a more controlled quenching process followed by subsequent tempering. This additional step enhances the ductility and weldability of the bars while maintaining their high tensile strength.

2. Properties:

  • TMT 500: TMT 500 bars typically have a minimum yield strength of 500 megapascals (MPa) and offer excellent tensile strength and ductility. They are suitable for a wide range of construction applications, including residential buildings, bridges, and commercial structures.
  • TMT 500D: TMT 500D bars also have a minimum yield strength of 500 MPa but exhibit improved ductility and weldability compared to TMT 500 bars due to the additional DQT process. This makes them particularly suitable for structures requiring higher levels of seismic resistance and for applications where welding is necessary, such as in pre-fabricated structures or reinforcement in concrete.

3. Applications:

Both TMT 500 and TMT 500D bars find applications in various construction projects where high-strength reinforcement is required. However, TMT 500D bars are preferred in projects where enhanced ductility, weldability, and seismic performance are critical, such as in high-rise buildings, bridges in seismic zones, and industrial structures subject to dynamic loads.

In summary, while both TMT 500 and TMT 500D bars offer high tensile strength, the additional DQT process in TMT 500D bars results in improved ductility and weldability, making them suitable for specific applications where these properties are essential. Builders and engineers should carefully consider the requirements of their construction projects and select the appropriate type of TMT bars based on structural design, environmental conditions, and performance criteria.

What are the various grades of TMT steel bars?

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Asked by Wiki User

TMT (Thermo-Mechanically Treated) steel bars are available in various grades, each designed to meet specific performance requirements and applications in construction. The selection of the appropriate grade depends on factors such as structural design, load-bearing capacity, environmental conditions, and building codes. Some of the common grades of TMT steel bars include:

1. Fe-415: This grade of TMT bar is one of the most widely used and suitable for general construction purposes. The "Fe" stands for iron, while "415" denotes the minimum yield strength of the bar in megapascals (MPa). Fe-415 TMT bars offer adequate strength and ductility for residential and commercial buildings.

2. Fe-500: TMT bars with a grade of Fe-500 possess higher tensile strength compared to Fe-415 bars, making them suitable for structures subjected to heavier loads and seismic forces. These bars are commonly used in high-rise buildings, bridges, and infrastructure projects where enhanced strength is required.

3. Fe-550: TMT bars of Fe-550 grade offer even higher tensile strength and superior ductility, making them ideal for applications demanding greater structural integrity and resistance to dynamic loads. Fe-550 bars are commonly used in industrial structures, power plants, and heavy infrastructure projects.

4. Fe-600: This grade of TMT bar provides the highest level of tensile strength and ductility among commonly available grades. Fe-600 bars are utilized in specialized applications where exceptional structural performance is paramount, such as in pre-stressed concrete structures and high-rise buildings in seismic zones.

5. Corrosion-Resistant (CRS) TMT Bars: In addition to standard grades, corrosion-resistant TMT bars are also available to mitigate the effects of corrosion in aggressive environments such as coastal areas or industrial settings. These bars are specially designed with added corrosion-resistant elements such as copper, chromium, or zinc to enhance their longevity and durability.

It's essential for builders, engineers, and contractors to carefully evaluate the requirements of their construction projects and select the appropriate grade of TMT bars to ensure optimal performance, durability, and structural safety. Additionally, adherence to relevant national and international standards and codes is imperative when specifying TMT steel bars for construction applications.

Define direct shear stress?

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Asked by Wiki User

Shear force is a load (pounds, or newtons) in plane of the object which produces shear stress ( pounds per sq inch, or Pascals).

Shear force is related to shear stress as

STRESS = FORCE/AREA

What is factor of safety in Crane load lifting?

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If SLI is in operating condition then sLI itself will indicates that whether load is in safe mode. But if SLI is not working then one must be considered 40 % factor of safety of crane SWL and in SLI working condition it will be considered 20 % of its SWL.

What is underslung single girder EOT crane?

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Asked by Wiki User

only one load bearing beam will be provided for Single girder EOT crane

What is an EOT Crane?

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Electric Overhead Travelling (EOT)

Electrical Overhead Travelling (EOT) cranes are simplest type of cranes used in industries for maintenance purpose(mostly). The capacity can go up to 50tons. The Indian standard for the EOT crane is IS3177. Some of the EOT crane manufacturers in India are LOADMATE, EDDY cranes, Armsel MHE pvt ltd.......

How do you calculate eot crane lt wheel?

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Asked by Wiki User

how i will calculate eot crane long travel wheel

Where can a gasket be used in mechanical systems?

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Asked by Wiki User

A gasket is a seal that is used in mechanical systems. It is used to fill the space between two or more surfaces that meet in order to prevent leakage.

Why is it important to leave the work area and the machine in a safe condition on completion of the turning activities?

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Asked by Alexreimer

So that accidents including fires caused by sparks or leaks or expensive equipment being destroyed

Which is the toughest engineering branch?

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Asked by Wiki User

off course mechanical engineering is the best engineering branch ever because it is r cessation proof and it is standard branch no one can get easily this .....so .....

Which bachelor of engineering course is best?

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Asked by Wiki User

It's not that one is better than the other, it's that they are different. You must determine which one is best for you. You have to decide exactly what it is that you want to do. You should have a passion for the field whichever one it is. In terms of engineering, there are a number of possibilities to include to following.

* Mechanical engineering * Chemical engineering

* Electrical engineering

* Architectural engineering

* Computer science engineering * Management engineering

Which is the best iit for mechanical engineering?

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Asked by Wiki User

IIT kharagpur is the best IIT for mechanical engineering. IIT Delhi ranks second.

State steps that might be present in the sequential control of a dishwasher?

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Asked by Wiki User

steps might be present in sequential control of a dishwasher.help me with a block diagram

Whats is young's modulus?

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Young’s Modulus (also referred to as the Elastic Modulus or Tensile Modulus), is a measure of mechanical properties of linear elastic solids like rods, wires, and such. Other numbers measure the elastic properties of a material, like Bulk modulus and shear modulus, but the value of Young’s Modulus is most commonly used. This is because it gives us information about the tensile elasticity of a material (ability to deform along an axis).

Young’s modulus describes the relationship between stress (force per unit area) and strain (proportional deformation in an object). The Young’s modulus is named after the British scientist Thomas Young. A solid object deforms when a particular load is applied to it. The body regains its original shape when the pressure is removed if the object is elastic. Many materials are not linear and elastic beyond a small amount of deformation. The constant Young’s modulus applies only to linear elastic substances.

What is the tensile strength of mild steel?

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Asked by Wiki User

Mild steel is a fairly general classification and can cover a considerable variation in material properties. Cold drawn grades in particular will have a higher tensile strength than hot rolled.

Something like 400 MPa for yield stress and 500 MPa for ultimate tensile strength is quite common.