Mechanical Engineering

Martensite transformation begins when austenite is cooled below a certain critical temperature, called the matrensite start temperature. As we go below the tmartensite start temperature, more and more martensite forms and complete transformation occurs only at a temperature called martensire finish temp. Formation of martensite require that the austenite phase must be cooled rapidly.

For Cast Iron, per the related website is: .22 - .30. If you can get more information on the grade of the iron, you will be able to get close to the true value. I have in the past used 0.27 for cast iron.

its costly than open loop system and bulky, too.

It is an binary arithmetic operator which returns the remainder of division operation. It can used in both floating-point values and integer values.

opLeft % opRight where, opLeft is the left operand and opRight is the right operand. This expression is equivalent to the expression opLeft - ((int) (opLeft / opRight) * opRight)

Other elements can be added in certain quantities to make alloys of that metal. Properties such as ductility and hardness can be tailored by adjusting cooling times, heat treating or cold working. Forging can sometimes help to rid the metal of unwanted purities and to improve the grain structure.

there aren't any, so there isn't any.

The code is comprised of two numbers separated by a dot. This dot is not a decimal marker but is merely a means of separating the two parts of the code. The number to the left of the dot when multiplied by 100 provides an indication of the ULTIMATE STRENGTH in Mega Pascals while the number to the right when multiplied by 10 times the preceeding number gives YIELD STRENGTH (Mega Pascals - MPa) or STRESS at 0,2% PERMANENT SET (MPa) depending on the strength grade; e.g. 8.8 Ultimate Strength: 8 x 100 = 800 MPa Yield Strength or Stress at 0,2% Permanent Set: 8 x 8 x 10 = 640 MPa How are they made? See the link belowhttp://www.m-d.co.za/images/M&DTechnicalData.pdf

Allowable stress would normally refer to design using Allowable Strength Design, also known as working strength design. In this the allowable stress is usually a fraction of the yield strength and can be different for uniform tension and bending. Typically mild steel has a yield strength of about fy=250MPa with allowable stresses in

Tension, 0.6fy=150MPa

Bending, 0.66fy=165MPa

Quite common, there are 7 billion people in the world, there are a LOT less engineers than non-engineers.

if you need to know how many triangles are in a polygon ... just take the number of its sides and subtract for example.

nonagon has 9 sides so it will be 9-2=7

so, a nonagon has 7 triangles

The strength of steel is graded based on it's yield strength- the point that it will have a permenant deformation from a load.

Steel will be graded however an engineer requires it to be in order to meet the design criteria. In order to keeps things simple and economical, common grades are: Mild which is essentially untreated for any design strength; A36 (with a 36,000 psi yield strength); and A51 (with a 51,000 psi yield strength).

Most buildings are designed with A36 in mind and it is by far the most common. Cars, industrial equiment, and special construction may use A51 or higher. Since steel becomes more expensive the more it is treated, any product or assembly requiring anything other than standard yield strength will require an analysis showing the cost savings of using less higher-strength steel versus more lower-strenght steel.

Steel comes in other varieties, like stainless (with its own grading characteristics) or corten (meant to be exposed to the weather).

inside area of fluid conductor in centimeter square x velocity of fluid in centimeters per second/1000 = flow in litre per second simple formula: Q=a*v Q=Flow rate a=area of pipe v=velocity of fluid in the pipe

The discharge coefficient is near unity and Non-recoverable net head loss is very small.

formula calculation of steel round bar

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Area (square metres) of cross section * 7850 = kilograms per metre length.

For other lengths, multiply answer by length in metres.

1 1 Meter of water column 9800 pascals = 10 Kpa = .1 Kg/cm2 UNIT FOR USAGE 10 METER OF WATER COLUMN 1 kg/cm2 I hope this answers your question. If you need any clarification please get back to me at mrajkumar0865@rediff.com

The usual way is with a synchronous generator connected to the distribution system.

It is used to transfer torque between two parallel but not collinear shafts.

Depending upon the matterial of the 3 discs , oldham coupling can be used in many devices. They can easily be used in servo mechanisms.

in 1905 Richard Sutcliffe invented the first conveyor belts

The thickness of metal wire is inversely proportional to the guage number of the metal wire. So 28 guage metal wire is thicker than 30 guage metal wire.

low alloyed steel plate Material: Q345B (which is equivalent to S335JR,JIS G3135 , DIN EN10025) Size: Thickness: 8-200mm Width: 1800mm up Length: 6000-12000mm

y(young's modulus of rigidity)=stress/strain

now strain is dimensionless

hence y=stress

y=M L-1 T-2

They were 23 feet 6 inches in diameter.
114 inches
as big as a winmill

Well the Mechanical Engineering course mainly include;

1.Thermodynamics

2.Calculus

3.Mechanics ( Statics + Dynamics )

4.Fluid Mechanics

5.Mechanics of Materials

6.Theory Of Machines

7.Material Sciences

8.Drawings, including some software also

9.Basic knowledge of Electrical Engineering and programming

All the above subjects have Labs as well ... Means some practical demonstration

These are basic subjects. Not all as there are many advanced subjects too but they are linked to these basic subjects

Courses become more specific in final year of engineering e.g if you are more interested in thermodynamics then you may prefer to study Internal combustion Engines or HVAC

to use a blender you simply put a mixture of things into it and you simply put the top on so that nothing comes out while its on.make sure the blender is pluged in so that it will work, its only easy guys!! youll get the hang of it student doing an essay on how to use a blender to use a blender you simply put a mixture of things into it and you simply put the top on so that nothing comes out while its on.make sure the blender is pluged in so that it will work, its only easy guys!! youll get the hang of it student doing an essay on how to use a blender