Steel Definition and 840 Threads

A hydraulic steel tube of diameter 10mm and wall thickness 1.5mm has been bent to a radius of 100mm. Calculate the reverse radius of curvature that needs to be applied to straighten the tube. M/I= σ/Y = E/R I am really struggling on the above question. I think I need to read off the...

Homework Statement For my project I need to calculate the maximum height that a Steel Rope could achieve while being hung between the Earth and the Moon. Homework Equations Tensile Strength of Steel is: 500*10^6 E of steel is: 200*10^9 distance from the Moon to he Earth is 406700...

Homework Statement Alright, so I have this final project in physics which was due yesterday and I'm turning it in late because i have a problem with understanding one thing. so the project it about space elevators and the teacher asked me to make calculations about what is the maximum height...

a steel wire has an span of 800 meters,with weight of 1.44 kilograms per meter. how to determine then the actual tension force applied in both ends of the cable? assuming that both ends are in the same elevation. thanks..

I need to build a pressure accumulator which will be then used as a spring actually (upper side of the accumulator will be filled with nitrogen, and the lower won't be filled with oil, but will have a rod which will be holding movement of a machine part (rod) at a high frequency.) I'm having...

I am working on designing a trailer that will hold a load of 350lbs on 2 centered posts. It needs to have a safety factor of 3, so 1050lbs plus trailer weight. I am trying to determine the size of Steel square tube I must use. Any advice on formulas or methods of determining this? I would...

Please redirect me to the appropriate forum if I have posted in the wrong place... This stuff is FAR over my head, and I need somebody with some real knowledge of thermodynamics and heat flow... I own a scuba dive shop and of course we compress air to very high pressure, on the order of 300...

hello friends, i am currently working on a project in which a steel rope is used to carry an object in a loop just like a chair lift. what i want to ask is what method can i adopt to make a joint of the rope that can pass through or over the pulleys and not de-track too. The rope diameter is 8...

Homework Statement I am required to conduct a thermal shock test where by a stainless steel object (complicated geometry) is to go from one tank of light oil at -55°C to another tank of the same light oil at +140°C, then back the -55°C tank. This is to be repeated 5000 times. In order to...

Homework Statement A false mud gate made of common steel for a damn is 6'6" wide, 21'1" tall, and 1/2" thick. Assume a constant density throughout. What is the required force to lift this gate if it were laying flat on the ground and a hoist was attached to the center of gravity? also where is...

Hey. This is my first post, I'm a Senior in Mechanical Engineering, I will help others as far as I can. I'm trying to solve the problem from the picture. The shaft is loaded with 2 transverse loads, 2 moments and 2 torques. The critical point is immediately to the left of "B". The material is...

Homework Statement A sound wave is generated by a source of frequency 440hz is moving through 25 deg celcius air. The sound wave strikes a solid block of steel and propagates into the steel. What is the wavelength of the sound wave inside the steel. The density of steel is 7.85 g/cm^3 and the...

Picture a game of hangman. You have a vertical pole, a horizontal bar extending out from the pole and then the poor guy being slowing hanged hanging at the end of the horizontal bar. I'm trying to calculate much weight the pole can support before it bends. Well, actually I'm trying to hang a...

I was wondering if anyone knew of the potential downsides of using this material to replace a piece of 1/4 low carbon steel that is decaying and is a backing plate inside a hull of a 28 foot sailboat. I would be replacing it with 1/2" G10/FR4 fiberglass board minimum and could go to 3/4 inch if...

Would it be possible for a reasonably built human to abrade through hardened steel if he had a blade made out of diamond? Or is human muscle power insufficient to break the chemical bonds?

Homework Statement (see attachment for image) A steel ball is released from a ramp and enters at the position marked. Draw and explain the paths taken by both balls (explain the difference between the paths)Homework Equations The Attempt at a Solution So the smaller ball follows a path with a...

Hi all, I am looking for US steel manufacturers/fabricators for fabrication of heavy equipment. Typically 200-2000kgs per weldment. 5-50mm mild steel. 2-10 pieces per order. Machines needed: large bending press. horizontal milling machine. CNC drill. Thanks. Huntoon

Hi, I have been given the following questions to answer: write a report on the following: - the process by which plain carbon steel is produced - the process by which alloy steels are produced - the process by which aluminium is produced Now I am not entirely sure how to answer this and...

Hi: I have a tank of water (of plastic) of about 2 x 4 feet. I want a steal rod (with a ball of 5 inch at end of rod) to be cross that water tank from center, but water should not leak from tank (rod will enter from right and exit from left of tank) You can get more idea from image that...

I often hear about collisions in terms of impact force. For instance, "the boxer delivered a punch with 100 lbs of force." I have a pair of steel toed shoes that are rated to withstand 70 lbs of force (311 N). But if the shoe experiences an impact instead of being loaded very gradually, wouldn't...

I am working on a prototype for a laser component. We have a stainless steel box, that is flooded with water for cooling. There is current and UV light in the box, so to isolate the current from seeing the steel I am lining the walls, about 1.5 mm thick, with a resin. I'm looking for...

I am currently installing some sail shades in my back yard. The manufacturer is callin for 6" tube steel supports but I believe that 4" tube steel filled and compacted with concrete will provide more strength and resistance to buckling. Obviously I am concerned about price but want to do a great...

Can anyone Help? "impacting concrete with steel projectile" Dear all gentlemen , Can anyone help me ? I'am doing my thesis in civil engineering in studying and mixing statistics with civil engineering with topic of " impacting concrete with steel projectile " if we consider the...

what is semi killed and fully killed steel.

http://img268.imageshack.us/img268/4821/98922663.jpg Uploaded with ImageShack.us Effective length: x-x axis = 1 x 6500mm y-y axis = 1 x 5000mm do i have the right effective length?

Hi, What is the strongest steel? I did a quick search and found this steel with ultimate tensile strength over 5 GPa. Is it possible or just a mistake because at much lower per weight than that, titanium is used in aerospace industry, while this steel application seems consist nothing...

I want to drill a 3/8" hole in one side (not through) of a steel tube, 1-3/16" OD 1/16" wall tube in order to run cables through it. The tube is my son's go kart frame so I want to make sure it is safe to drill a hole into it. I'd appreciate any comments.

Hi, To simplify the explanation of my problem, imagine that I have in my hand a rectangular steel piece of 1.5mm thickness with a hole of 2mm diameter. In the other hand I have a small tubular steel piece 10mm length x 2mm diameter. I have to put this tubular piece into the rectangular...

What happens? I think nothing should happen since the rods will not get magnetised at all due to the ac current.. Thanks for the help!

Homework Statement A steel ball of mass m falls from a height h onto a scale calibrated in Newtons. The ball rebounds repeatedly to nearly the same height h. The scale is sluggish in its response to the intermittent collisions and displays an average force Favg, such that FavgT = FΔt, where...

1. Homework Statement Compute angle of twist of one end relative to other if a torque of 850 lb-in is applied uniformly along the length. Shaft has two flats (not just the 1 pictured!) 1.25 " is measurement across flats. Homework Equations J = C r^4 The Attempt at a Solution I had...

Name of the steel alloy?!? Hi, can someone please tell me how can I find out the name of an alloy if I have its composition? Here are the percentages of each element inside: Composition in % (min ;max) C ( - ; 0.05) Si...

Homework Statement You have been assigned to design brass pistons to slide inside steel cylinders. The engines in which these pistons will be used will operate between 20.0 degrees Celsius and 150.0 degrees Celsius. Assume that the coefficients of expansion are constant over this temperature...

My son brought home a fourth-grade science experiment a few days ago: He was to make some sort of property change in a steel nail. He had decided that he wanted to make it rust, so we set about creating an electrolyte solution out of salt and water and leaving it in there. There wasn't...

I am just not too sure how to start this equation. The answer was given (i.e. Vc = 3698 cm^3), but I just need to know the steps on how to get to the answer. A sand core used to form the internal surfaces of a steel casting experiences a buoyancy force of 225.63 N. What is the volume of the...

I am a lisc. Auto body tech, and I have a customer who wants a Carbon Fiber roof on a Volkwagen bug, I can fabricate a inner frame, and bonding will not be an issue, (according to paint rep) The hard part is I want to do a flush seem and have paint blend into carbon fiber. I will "butt" match...

Hey all, I am designing a cup holder. It is supposed to be made out of a few steel rings. Its geometry is such that the hoops can open (so the radius increases), and you place the cup inside. Then, as the hoops spring back, they press upon the cup and the friction holds it in place as you lift...

Homework Statement [See Attachment] Given: Thickness, load, G Find:γ and horizontal displacement. Homework Equations τ=γG Angle change should be the shear strain. The Attempt at a Solution I tried plugging 800 into tau and the given value of G to get γ, but that isn't...

A steel rod of 0.10kg rests on two metal rails inclined at an angle of 30 degrees. There is a magnetic field of 0.50T on the incline and a current of 70A flowing across the bar. Find the acceleration of the bar. The bar is 0.12m wide** The attempt at a solution What I have so far is a diagram...

Someone told me that an arrow shot from a compound bow can go through a reinforced steel door. I just want to find out how true that is. How far can an arrow shot by an athlete with a modern bow specially prepared for them shoot through steel? Also, how far can they shoot through wood, or rock?

If a 1 inch diameter steel ball bearing is at rest on a frictionless surface, what slope would be required of the surface for the ball bearing to initiate movement?

I am reading through some calculations in a book that refer to an average shear modulus of steel (19700)... they give no units and it has completely thrown me off track while following through the calcs can anybody help? I know the unit is imperial and if i convert some of the other units...

Hardhats are tested by dropping a 3.63 kg steel ball (free fall) from a height of 1.52 m and allowing it to impact the top of the hardhat. Hardhats are impacted with an impact velocity of 5.5 mps. The hardhats are supported at four locations where they are connected to a circular band that...

Homework Statement An angler hangs a 4.50-kg fish from a vertical steel wire and 5*10^-3 cm^2 in cross-section area. The upper end of the wire is securely fastened to a support. a) Calculate the amount the wire is stretched by the hanging fish. The angler now applies a force F to the fish...

Appreciate any comments regarding the following:-(I am not an Engineer) We intend to launch (Mekong River) the subject steel tube (12mtr pipe welded together using the collar sleeve method) Flanges / gasket will be fitted at both ends of the tube. The flanges will have a 1" valve at the top and...

Hi, I was wondering if anone knew what an internal CD or DVD drive case is most commonly made of. I was hoping to use it to do some welding so am hoping it is steet but not sure. Cheers

If you heat inox steel in presence of air, up to a specific temperature, you get a yellow colour of the metal surface; increasing the temperature it becomes red; still increasing, blue. Is it due to the formation of oxide layers of different thickness? Which effect is responsible of the colour?

Steel Joists: Moment of Inertia? I thought it might well be worth while asking here, as the Forum is awash with knowledge about most things. I am planning to do a loft conversion and I need to know about the strength of steel beams (Universal Joists, in fact). I keep seeing the expression...

i don't know if i am in right part of forum. i want to build some sort of wind turbine for a school project. all the diy project are 6 or 9 coils with 8 or 12 magnets. the coils are on non magnetic board and the magnets on steel plate. why on steel, the steel plate increase the total...

"Whiskey Stones" - ice, stone, steel: which is best?? The conundrum: I'd like to purchase the most effective cooling item for my evening dram of scotch, or Manhattan bourbon, or Black Label, or... Where was I? Seriously, I am intrigued by the growing popularity of "whiskey rocks" - an item to...