Aluminum Definition and 303 Threads

hi all; actually i have done an experiment using die sinking EDM using one copper electrode and three different work piece material copper aluminum and stainless steel to perform a comparative study in term of MRR, TWR and surface roughness. i used ( pulse current 8, 12, 16, 20 and 24 Am... the...

If electrons flow on the surface of a wire, why isn't copper coated aluminum wire used in electrical applications instead of solid copper wire? It would be more cost effective

Hi All, So here's the problem. A project I am working on has a composite metal panel assembly, which a previous engineer designed. The metal panels are simply glued to the polystyrene (styrofoam sm). The problem is that the previous engineer did not consider the difference in thermal...

Can anyone provide information on the quality of extruded parts tolerance from 6061 and 6063 Aluminum alloy. I would like to have very tight tolerance on the dimension and have a choice of these 2 alloys, which one would be a preferred material ? Is there any information on the viscosity of...

Homework Statement A longitudinal standing wave can be created in a long, thin aluminum rod by stroking the rod with very dry fingers. This is often done as a physics demonstration, creating a high-pitched, very annoying whine. From a wave perspective, the standing wave is equivalent to a...

I don't know if this is the right forum but I'm curious. Companies are searching for alternatives like copper and zinc to make photovoltaic solar cells out of. Could aluminum ever work and be feasible, and replace current rare Earth components?

At parity of maximum resistance before failure (in the case of aluminum, deformation), weighs less aluminum or plastic? Let me explain better: if i apply a force of 1000N on one end of a rectangular plate with a fixed fulcrum on other side, beyond this force both materials deforms / break. The...

I have an aluminum disc that is 15in in diameter and about 1in thick. I am going to put it in a 400°F oven and I need to know how much the diameter will expand. One of the engineers I work with(i'm an intern) is using what I found to be the linear expansion equation (ΔL/Li=αΔT)...so Length...

Hi, I get a whole bunch of extruded Al plates. Each of them is about 7" long by 3" wide and 0.08" in thickness. They are extruded parts and cut into 7" long on each pc. However they are coming out wrapped, not substantial but quite a amount that is out of our tolerance. They are wrapped close...

We are building a light detection system which works like a clock’s hand: an aluminum profile (the “hand”,shown in schematics) carrying detector assemply on its one end rotates around the other end; as the aluminum profile is quite long (2200L*40W*40H mm) and heavy (~10kg)，we will add a...

I have a need to capture some free sulfur and graphite molecules in the anodizing layer of aluminum, preferably a hard anodizing which uses higher current levels and lower temperature than normal anodizing. I had imagined puting DMSO for the sulfur molecule in the sulfuric anodizing solution and...

I am wondering if anyone would be so kind as to help me with a project. I am wondering what size aluminum square tubing it would take to build a "T" with the horizontal top being 4 feet in length and being able to hold 250 lbs. at each end and 1 ft. in from each end, totalling 1,000 lbs. I...

Homework Statement A 2.3kg aluminum pan at 135° is plunged into 3.0kg of water at 15°. The specific heat of aluminum is 900 J/(kg K). Part A Find the final Celsius temperature of the aluminum and water. T_f = °Celsius Part B Find the entropy change of the aluminum pan...

Homework Statement You have collected exactly 1500 aluminum cans for recycling, each with a mass of 13.9 g. How much energy is needed to melt them if their initial temperature is 25.5◦C? Assume the specific heat, the latent heat and the melting point of aluminum are 899 J/kg ·◦C, 3.97 ×10^5 J/kg...

I am curious if someone can help be estimate heat sinking and dissipation in an Aluminum structure? What I am trying to do is is cool a hot liquid by just allowing it to heat the structure it is in since there is a reasonable amount of mass. Though the Aluminum structure is not designed...

I started off yesterday learning about specific heats, and measuring my ice cubes to figure out the correct number to cool my tea to a proper drinking temperature. Now today I was curious how much propane would be required to melt 1L of Aluminum since I'm also interested in casting Aluminum...

Homework Statement While forming a 1.5kg aluminum statue, a metal smith heats the aluminum to 2700 degrees C, pours it into a mould, and then cools it to a room temperature of 23.0 degrees C. Calculate the thermal energy released by the aluminum during the process. Homework Equations Q =...

Pressurized air in aluminum block.. help so it doesn't explode! Hey everybody! Need some help with a design I'm comming up with for myself- it's an air valve block. What I'm having trouble with is figuring out how close I can make the holes to each other? I don't have any computing...

I two firebricks, one is wrapped with 4 layers of aluminum foil and the other one is not. If both are placed 10 " above a gas burner (not in contact with the flames), which one will have a higher temperature? What equations need to be used to calculate heat transfer between aluminum foil and...

Homework Statement What diameter must a copper wire have if its resistance is to be the same as that of an equal length of aluminum wire with diameter 3.94mm? Give your answer in mmHomework Equations R = ρL/A where A is the cross sectional area, L is the length and ρ resistance of the...

Why does aluminum "leech" into a water bottle, but stainless steel does not? My professor was saying that using aluminum water bottles will result in a small amount of aluminum ions dispersing into the water. Stainless steel, however, does not have this problem. Is this true? Why? I'm...

Homework Statement Some aluminum rivets of total mass 170 g at 100°C are emptied into a hole in a large block of ice at 0°C' a. What will be the final temperature of the rivets? b. How much ice will melt? Homework Equations none The Attempt at a Solution Please help me answer...

Hi all, I am working on thermodynamics problems, and can't even seem to figure out how to start it. I came across a scenario in which an 100gallon aluminum horizontal half-filled diesel fuel tank imploded because the vent was plugged. I know the basic concept behind the happening, i.e...

*Messed up title, should have been find initial temp of copper* Homework Statement 8.00 g of aluminum at 200 °C and 18.0 g of copper are dropped into 50.0 cm3 of ethyl alcohol at 15 °C. The temperature quickly comes to 26.0 °C. What was the initial temperature of the copper? Density of ethyl...

Homework Statement A cube of aluminum is suspended deep in the ocean. Will it yield if it is placed deeper and deeper in the ocean? Homework Equations The Attempt at a Solution I guess that it will yield since the pressure from water will be stronger as it goes deeper...

hi there, i want to connect two pieces of metal together one is i think a piece of steel capable of being attracted by a magnet and the other piece an aluminum piece, or maybe another metal, but not magnetic at all anyway they're both solid pieces and need to be joined. is brazing or using...

(that's Fahrenheit of course) For that matter...0 degree F aluminum cubes doesn't cool a room temp liquid as much. frozen H2O cools liquid off much much much much faster and more (in total temp drop terms) than equal surface area "cubes" of aluminum, cooled to -20C. (I've done the...

I have heard of a project where the military hooks up many large capacitors (with short discharge time coefficients) to a bar of aluminum and the end result is an extremely bright explosion. Could someone expand on exactly what is happening here?

Hi, I've looked everywhere for some advice on this, I hope someone can help. We are making a cooling system for cooling thin films, and part of that setup is a liquid nitrogen-cooled cold finger. This cold finger will be inside an aluminum tube, and will move closer and farther away from the...

Hi guys, I am doing a research on the capacitor industry and would like to ask some question. I did some basic research online that find out that aluminum capacitors are mainly used in the following areas. Power supply output filter Blocking and dc-bypass circuits Motor start and...

Hello everyone, I am a new member here. Nice place you have; I have been reading on here again and again and figured it would be the right place to ask you about a problem I just can't get sorted out myself. It is about bicycles and disc brakes. I have an aluminum track frame that I want a...

Homework Statement An aluminum ring of radius r1 = 5.00 cm and a resistance of 2.65 x 10^-4 Ω is placed around one end of a long air-core solenoid with 970 turns per meter and radius r2 = 3.00 cm as shown in the figure. Assume the axial component of the field produced by the solenoid is...

Can anybody explain me why aluminum can not come out / outgrowth stop after the oxidation of titanium-allominium alloy?

super important for science- What's the relationship between Al and H2O Does the insertion of aluminum rods into a beaker of water affect the time it takes for the temperature of the water to reach 75 degrees Celsius when heated? I believe it would because there is more mass but I'm not...

Two small aluminum spheres, each of mass 0.0250 kilograms, are separated by 80.0 centimeters. How many electrons does each sphere contain? (The atomic mass of aluminum is 26.982 grams per mole, and its atomic number is 13.) The attempt at a solution I said that there are 6.02*10^23...

Greetings, I will describe the problem and my proposed solution which leads me to the load bearing question.. Problem: Pickup camper cabover floor is compromised where it attaches to the driver side sidewall, i.e., separation of floor from sidewall due to some dryrot and a blowout doing...

Homework Statement 3CuCl2(aq) + 2Al(s) --> 2AlCl3(aq) + 3Cu(s) a) If 4.8 mol of Al react in the process, how many moles of Cu are produced? b) How many grams of Al will be necessary in order to produce 12.7g of Copper? Homework Equations The Attempt at a Solution a) This one is...

Hey Chi Meson! Great job winning WPI BattleCry13. I read the account on your webpage, and it sounds like you had a blast. http://www.team2168.org/index.php/media/2012/261-wpi-battlecry-13 I was hoping to join my son's team (3044) at the event, but it didn't work out for me. They had a great...

Let's say I have a mixture of silver and aluminum metal, and I just want the silver metal. How do I just get the silver metal and get rid of the aluminum? Also, if I have silver metal and I want to make silver nitrate, what molarity HNO3 should I add?

Dear All, I work towards realizing Aerospace parts. We etch Aluminum by phosphoric acid. Procedure requires us to do atomic absorption for finding the quantity of dissolved aluminum in acid solution. I do not have facility for Atomic absorption method though I have an acceptable facility for...

Homework Statement An aluminum block has a mass of 0.25kg and a density of 2700 kg/m cubic. a) calculate the volume of the aluminum block. b) Determine the buoyant force exerted on this block when it´s completely submerged in water of density 1000kg/m cubic. Homework Equations v = m/d The...

As the tittle, can varying magnetic field ( well EM) cause eddy current in non magnetic conductors like aluminum? If so, why? Thanks Alan

I had a 4700uF-35v capacitor that I connected in parallel with about 18v. I would short it over some aluminum foil and being that it was connected in parallel, each slight disconnection with the foil would result in a recharge. Probably not worth mentioning, I definitely saw some sparks. The...

I have a discussion about shielding of noise generated by appliance and florescent lights. I know both Al and Cu are not magnetic material. BUT all noise are time varying meaning it is EM field. Good conductor block E field as loss is very high. How does that work when only the B field can pass...

I have an application that involves forming 2024 aluminum in the T42 state. I need to determine [approximate] the amount of elastic stretch vs yield once the yield point has been exceeded. In other words, once beyond the yield point, how much of the strain results in addional yield, as opposed...

How much power is needed to be able to melt aluminum using induction heating? So I have coil of copper wire around an aluminum cylinder. The aluminum is NOT touching the copper wire. the copper wire have a thickness of 0.5 cm. d = 0.5cm the copper wire is looped 20 times around. N = 20...

A well known physics experiment is dropping a magnet through a vertical aluminum tube. The magnet slows noticably before passing completely through the tube. Electrical current is created in the aluminum tube thereby creating a magnet thereby creating an opposing magnetic flux to slow down the...

So do to a few issues I have definitely missed some thing in my materials class so I hope I'm not going to be told I'm an idiot. Please forgive me if I seem dense I am a single mother with a one year old who is also tackling an engineering degree ^_^''' So without further ado... I am working...

In an induction meter two coils induce two eddy currents in same disc.It is said that the disc rotates due to the torque produced by the interaction of these currents with each other.How is that?I don't know the governing law.Can the torque be derived from the basic maxwell's equation?

200 series aluminum for structural purposes?? Hi Folks, I am sourcing HEX spacers for a strcutural PCB tower. The only alumium spacers I can find that fit the heights I am looking for, are made from 200-T3 aluminum. Previously I went by the rule that aluminum could only be used for...