Aluminum Definition and 303 Threads

Hello, I'm Mike from over on the EE board, and I'm looking for good advice regarding welding aluminum foil. I had a vendor that used to do so inside his capacitors and he even bonded the foil to solderable leads. Any ideas are certainly welcome, Best Regards All, Mike

Hello All, I'm normally over on the electronics forum, but recently I had a problem crop up regarding the spot welding of aluminum foil. I've seen the end results of the process, so I know it can be done cleanly. For that matter, I've seen pieces that predate laser welding, etc, so I'm...

Moderator's note: thread moved from Homework Help forums to Mechanical Engineering forum. Welcome to PF an1mal_69 :smile: Apologies, this is not homework, but a real world problem. Homework Statement Front suspension system, consisting of 2 wishbones supporting a wheel hub via (x2) ball...

I am interested in calculating the temperature rise of a 10 mil aluminum bond wire. Assuming relative purity of the wire, I feel like I should be able to use the method I have worked out below. If anyone can advise on the accuracy of my method, it would be greatly appreciated. Method: 1...

I want to reduce the weight of a square aluminum tube, 36 inches long, 1 inch square, and 1/16 inch thick, while maintaining as much strength as possible. The tube will be used at the body of a radio-controlled airplane. Where should the holes be (what part of the tube), how big, and what...

Someone knows what is the most commonly used aluminum alloy in baking wares? Thanks for help... :)

Sirs, I need to make a pump to draw molten aluminum from one container to another container. The first container height is 1.5m. I wish to us a screw enclosed within a cylinder and powered by a motor. Can anyone help me with the detail design of the screw and cylinder? I welcome any other design...

It's been awhile since I've been on, but I'm still working on my brake system for my track car - https://www.physicsforums.com/showthread.php?t=304215. I now have the hats and brackets machined, and I'm trying to decide what to do for the finish. At first I was set on anodizing as it'll...

I bought one of them grow lights for hydroponics recently - 400 watts Metal Halide and I wanted to know if a makeshift aluminum foil wall would be good enough to block out the radiation coming from the lamp. I know the outer glass shell of the light bulb already acts as a filter but i just want...

why is the 0.2%proof stress particularly useful for aluminium and how to calculate it?

very cool. & it isn't even the 23rd century yet. i can't even find the part of the abstract where they say they turned it transparent though :-p (i guess it's the 3rd sentence?) http://www.nature.com/nphys/journal/vaop/ncurrent/abs/nphys1341.html...

does shiny aluminum foil reflect infrared photons.

Homework Statement Suppose 69.3 J of heat is added to a 121 g piece of aluminum at 22.5 C. What is the final temperate of the aluminum? Homework Equations Q = m c (T - T1) I think, but I am only given 1 temp. The Attempt at a Solution There are examples that are simialr in my...

Hello. I have recently decided to create the silicon dioxide thermite reaction for a monitored school project. It is my understanding that the heat produced by this reaction per mole is less than the activation energy for the reaction per mole, and so I must mix in sulfur in order to encourage...

(This is not a homework question...it's a theoretical question based on an experiment that was conducted.) If you have an aluminum block and a copper block of equal mass, but the copper block is 100 degrees C and the alum. block is 0 degrees C, they reach roughly 30 degrees C at thermal...

funny but I could not reach the info from net quickly.

1. I need to know which compound out of Copper Sulfate, sodium chloride, potassium iodide and magnesium sulfate will be the best catalyst for the reaction between ALuminum metal and Hydrochloric acid. 2. The chemical equation is : 2Al(s) + 6HCl(aq) -> 2AlCl3(aq) + 3H2(g) 3. I...

Trying to pick a product for my project and would like to get some opinions from the knowledgeable people in the forum. let's say I am using 2 pipes, one made from PVC and the other from Aluminum to lift an object of x kilos. Both pipes are of the same lenght, size, and thickness. Which...

Please look at the photo. In the photo, is a drawing of a casting furnace, with melted aluminum at the level of where the door starts. Assume that we have 2 different riser tubes inside this casting furnace, one with an inner diameter of 1.5" and the other one with an inner diameter of 2.5"...

Hello all, this is my first post here and I am glad to be a new member of the PhysicsForums community! I have a question which I believe will be a good challenge for the bright minds here: I am trying to create a system of Al-Air batteries to power a motor which will be hooked up to an rc car...

http://en.wikipedia.org/wiki/Pyrotechnic_initiator

Hey guys, doing some research here on Specific energy absorption of Aluminum 1016 T6 extrusion. 300mm length. I have to try and increase the SEA within this control volume. I have couple ideas, what do you think? I am going to apply a 150N load to the extrusion through compression and compare...

Homework Statement What are some different ways to find the thickness of aluminum foil? Homework Equations I have already calculated it by using the method that requires us to find the volume, given the density, and dividing it by area. So i need new ways to do this same problem...

Hello, I'm a Process Engineer in an Aluminum Foundry and haven't been able to find the formula to solve the following problem and I'm hoping someone here can help. I've been digging through old textbooks, thinking this should be simple, but w/ no luck. - Thanks in advance. I've got a vessel...

Homework Statement An aluminum engine block has a mass of 110 kg. If only 20% of the heat produced in the engine is available to heat the block, what mass of octane is required to raise the temperature of this block from 15 celcius to 85 degrees celcius? c(Al) = 0.9 kJ/(kg . degrees celcius)...

Failure analysis of a 2" OD solid 6063 aluminum round bar I have a 6 foot piece of 2" OD solid 6063 aluminum bar that is supported at both ends. Hanging from the center is a 5000 pound weight. What techniques and equations would be used to determine if the aluminum bar will successfully bear...

This is a really simple problem, but I just can't remember how to combine the container and the water. Homework Statement An aluminum container weighing 200g contains 500g of water at 20*c. A 300g shot of the same aluminum at 100*c is put into the water. The specific heat for the aluminum...

I built a catapult (trebuchet actually) last year for the "Punkin Chunkin" where you throw pumpkins for max distance. This year I am planning on a slightly larger one and need some advice on aluminum. We basically use a primitve crane idea to lift the weight up rather than using a hoist or...

Homework Statement A hollow aluminum cylinder is 2.50m long and has an inner radius of 3.20 cm and an outer radius of 4.60 cm. Treat each surface (inner, outer, and the two end faces) as an equipotential surface. At room temperature, what will an ohmmeter read if it is connected between...

I have an Aluminum bank about 5" x 5" by 1/2" deep. Within the bank are all sorts of rows in which components are installed. I would like to make a mold of each individual bank. Does anyone know of any materials that will work for making a mold? My first thought was silicon, but wondered...

Hi all: I am fresh to engineering and have basic question. I have a 100 inch length and 40 inch wide & 6 in depth plate , it has honeycomb structure what I mean 0.125 inch face sheet of aluminum on either side and rest (6-.125*2)is honeycomb made of alumnium.It is supportted on 4...

Hey guys I need a little help trying to identify or getting a good conclusion of what kind of aluminum I have here. These aluminum was grind and finally polished with aluminum oxide of 3 microns. After the etching of the alloy with Keller's Reagent for a couple of seconds we took the...

Hey guys, I'm working on a project and am looking for some fatigue data for aluminum alloys, A356-T6 in particular. I've looked through the MIL-5 and Aerospace (Cindas) handbooks and haven't found any decent information. The textbook I have "Mechanical Engineering Design" by Shigley and...

Two small aluminum spheres, each of mass 0.0250kg, are separated by 80cm or .8m. If the atomic mass of aluminum is 26.982 grams per mole and its atomic number is 13 then how many electrons does each sphere contain? How many electrons would have to be removed form one sphere and added to the...

I have a question: does anyone know whether the aluminum surface treatment Allodine 1200 can give rise to outgassing when used in high vacuum conditions ? As I understand it, it is a chemical deposition of CrO3 on the Al surface.

Suppose that I have an aluminum cube with side lengths 10 cm. Suppose that I uniformly and continuously apply a temperature of 60 degrees celcius to one of its sides. The medium surroudning it is air with a temperature of 27 degrees celcius. After t seconds, what is the temperature of the...

Homework Statement Verbatim from the book: A square loop is cut out of a thick sheet of aluminum. It is then placed so that the top portion is in a uniform magnetic field B, and allowed to fall under gravity. (In the diagram, shading indicates the field region; B points into the page.) If the...

Application: Aluminum gooseneck horse trailer incorporates (2) 6 foot long 8 x 2.25 x .25 6062 aluminum C channel beams (sitting long side vertical) from each of the front corners of the box, coming to a point (forming a triangle with the front edge of the box) where they are welded together and...

Hi everyone! I have a question about mechanical properties of the materials. As I understand, when in metals microstructure the grains size decreases, the mechanical properties increases, specially metals strengthening. But I have a discussion with one Prof. who says that this is a minor...

[SOLVED] Aluminum Boats and Buoyancy. All right, here we go. I'm stuck doing a "Lab Practicum" which has this specific task: Build a boat out of aluminum foil alone. Find the maximum about of mass it can hold without tearing, capsizing, or just plain submersing into a bucket of water. The...

[SOLVED] sphere problem Homework Statement One cubic meter of aluminum has a mass of 2.70 x 10^3 kg, and the same volume of iron has a mass of 7.86X 10^3 kg. Find the radius of a solid aluminum sphere that will balance a solid iron sphere of radius 1.80 cm on an equal-arm balance...

Recently, we purchased a relatively brand new high performance car engine to swap with our regular car engine for the purpose of gaining more horsepower. I need to find out the probability of corrosion of an aluminum alloy (possibly 319.0) part of a complete engine block brought to the shop...

My adventure of watching aluminum age... zzzzz... This is really just a post about something interesting I've been doing. Not a question thread or whatnot, which is why its in this section. ____ I have been using aluminum rings to make small pieces of maille armour. The rings are very...

I don't know if this is the place to post but I was wondering if there is anyone out there that is experienced when it comes to aluminum corrosion. I am about to take an Auto Repair shop to court because I gave them an engine with 5,000 miles on it to swap into my car and when I received my...

Hello, When purchasing aluminum standoffs you can get them with many different finishes. Which finishes have the lowest resistance and offer protection against corrosion? The following link lists finishes available from a popular electronics hardware manufacturer.

Melting Ice With Aluminum?? Homework Statement How many grams of aluminum at 90 degrees C would have to be dropped into a hole in a block of ice at 0.0 degrees C to melt 10 g of ice? Homework Equations Q = (m)(c)(deltaT) c of aluminum = 0.9 c of ice = 2.1 c of water = 4.186 333.7...

[SOLVED] Charged Aluminum Spheres Homework Statement 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.) Homework...

I had better not say the company name, but a high profile company had an employee who was exposed to toxic fumes for years. As a result, at least according to popular opinion, his brain was so damaged by the fumes that he ended up wearing aluminum foil under his hat to keep the aliens living in...

Homework Statement A piece of aluminum wire has a resistance of 20C, 15.5 \Omega. If this wire is melted down and used to produce a second wire having a length four times the original length, what will the resistance of the new wire be at 20C? (Hint: The volume remains the same)...

I'm having difficulty with a problem on MasteringPhysics (such wonderful software...) and as a last resort I'm posting on here. This is, I'm sure, a really simple problem but I'm getting no kind of feedback from MP and there isn't an example problem like this in the book. Homework Statement...