Material Definition and 1000 Threads

i want to compare force on current carrying conductor , 1)placed in air surrounded by magnetic field 2)placed in the cylindrical cavity(without air gap but some electrical insulation) which is placed in magnetic field. please give me practically calculated answers with calculations.

I'm trying to get a constitutive model for a material based on some uniaxial test results obtained from one of my professors. However, I'm not able to obtain a working model with the data. I get a warning message about the model becoming unstable at the following: UNIAXIAL TENSION: 0.210E+00...

Hello Physics Enthusiasts The other day I received in the mail a uranium ore sample from United Nuclear, with a radiation measurement of 2,500cpm, intending to use it as a particle source for my replication of the famous Gold-Foil experiment, the theory for which was devised by Ernest...

In this question below in the 2 files, i have a problem with the ( Q ) in the shearing stress.. can someone help me and explain for me how they get [Q=(32)(30)(15)] for point (a) and how about point (b) also !? what i know that Q=A.y , how did they get (32)(30) for the area and (15) for the...

[SIZE="3"]In this question below in the 2 files, i have a problem with the ( Q ) in the shearing stress.. can someone help me and explain for me how they get [Q=(32)(30)(15)] for point (a) and how about point (b) also !? what i know that Q=A.y , how did they get (32)(30) for the area and (15)...

Hi all, I am in a search for a material that is transparent in UV wavelengths, but reflect light in the visible wavelength (e.g. the opposite of standard glass). does anyone here know of such a material? Thank's in advance

i have a case study on a crankshaft. i have completed the service requirements but i have no idea about what i am supposed to do for the material requirements. the question is: Discuss and identify the material requirements for the component by relating the material property requirements to...

Homework Statement A extremely strong wire of exotic material has a radius of 0.1 mm and a length of 5 m. A 1000 kg mass is hung vertically from the wire. The speed of sound in the wire is observed to be the same as the speed of a transverse wave on the wire. What is the Bulk Modulus of the...

Hey, I need to know the effect ( capillary rise) due to different materials on capillary action. Also, what is the reason behind it, not so complex, just in simple language. It will be more good if I'll get the practical and calculated values of height in capillary tube of different...

Hi, I was just wondering if it was possible to change the linear expansion (and expansion in volume as volume expansion is three times the linear expansion) of a certain material. The coefficient being; a = (Final Length - Initial Length)/ (Initial length) * (ΔT) Is it possible to...

the problem says \(y=f(x)\) and find the value of \(\int_{-\infty}^{\infty}f(x)dx\) if it converges \[f(x)=\begin{cases}2-e^{-0.2x}&\text{ for } x \ge 0\\0&\text{ otherwise} \end{cases}\]...help

Homework Statement So, I was sitting in my algebra based college physics class and we were talking about buoyancy. According to Archimedes' Principal, "an object that is completely or partially submerged in a fluid experiences and upward force equal to the weight of the fluid displaced."...

as title.. are there any books with recent info re. current thinking about space/time..origin, structure etc... cheers

Would a "molecule thick" blade separate material by enough distance to damage it? I don't know if this should be in general physics. In science fiction the concept of a "mono-molecular blade" exists, this being a blade with an edge that it the thickness of a single molecule, or thinner...

Just wondering what the name of the component as a whole is? And what is it made of? Also, if you could tell me the name of all the constituent parts, that would be great...

Hello guys. Since this is my first post and I can't post in Pre-calculus Learning Material, I shall post it here.Now, to the topic. I am passionate about learning maths, however, because I live in Australia and go to public school, the level of maths that they teach is miserable (Year 9...

Hi, I have been using a tensiometer to help me try and determine what the material is. one of the materials has been heat treated and and instead of a nice necking formation in the middle of the "dumbell sample" it has fractured perpendicular to the sample right next to the chucks of the...

Hello Everyone I am looking at equations of colliding particles in a granular gas and wondering how to calculate them. We assume that the grains are identical perfect spheres (in R^3) of diameter D>0, (x,v) and (x-Dn,w) are their states before a collision, where n ε S^2 is the unit vector...

I was very shocked by the class averages and curve for my quantum mechanics course. The exam was curved to (brace yourselves) 55/100 as an A. Yeah. Kind of shocking, frankly. Of course, the class average was 47.5 or something on that order. My own score was an 80, which I'm not terribly happy...

Hi all, I'm a first year mech eng student starting a mid-term assignment which is a report into the durability, machinability and cost of 3 different materials. First off, I'm looking for a durability index for different materials; brass, aluminium and plastic (ABS) What is the procedure...

When given a cylinder with radius, height and thickness, how does one go about computing the amount of material used in making the cylinder? Initially I thought the amount would be: Material=2\pi r^{2}t+2\pi r h t where t is the thickness of the cylinder. Looking at this equation...

I'm using Ansys Workbench V.13, when I use library of explicitmaterial I saw that Unit of True Strain is Mpa ?! And if we can't trust this strain-stress curve,please tell me, where can I find aluminum 1100 strain-stress curve ?

Hello, I'm new in here. And now i am in research about elektron transfer between solid material. Is this possible and reversible ? Does anyone ever try this ?

Hello All. I am getting my @$$ kicked by what seems to be a simple concept, and I hope someone can offer me a little help. With some of the nickel based super-alloys such as what are used in turbine blades, why do the alloys get stronger as they get hotter? It seems counter-intuitive to me...

I'm a bit confused about the effect of the size of ferromagnetic material on the magnetic field it generates so I was hoping someone could explain it to me. The saturation magnetization is given by M = \frac{N}{V}*μ but this suggests that the magnetization is independant of the size of...

Homework Statement I need to write a program that, given the decay constant of a radioactive material, will calculate numerically (to withing one second) the time taken for half of the orginal sample of material to decay.Homework Equations λ = decay constant C0 = start amount of material...

Hey Guys, Been a while since my last visit, as I've been away for a well earnt break.. But recently I've been set a challenge and its baffling me some what, and i wonder if anyone can help pleaseeee:biggrin: Basically long and short of it, a Car Manufacturer has been struggling in...

Hi , I've been wondering is there a metal or some kind of material that can hold a magnetic flux like a transformer core iron and alloys usually do, but at certain frequencies have a resonant effect, like putting a let's say 100hz frequency in the primary winding could make the electromagnetic...

Hello all! I am looking to begin working on some balloon testing. I have a general idea of how I'm going to perform this. For the balloon envelope, I wish to use ripstop nylon, but I have no clue what would be the best way to make it gas-proof? I have considered coating it with both liquid...

Hi, I currently have a fragile metallic cylindrical mold (wall thickness ~1 micron) into which I want to injection mold a thermoplastic polymer at about 150 MPa (3.14 Mlb/sq.ft). The mold and polymer together will form the final part. However, such injection pressure far outstrips the rupture...

Is there any type of liquid or solid, or any material that will expand with the addition of electricity, or vice versa?

...in the elastic region? Or does the x section area decrease only after the yield point?

we know that the full life of radioactive sample is infinity. and if we take one radioactive atom in the sample then it's full is measurable and short. it changes when when it emits sub atomic particles. which contradict each other. we need to know more. the dimension of radioactive constant...

Im just curious if Humans have created anything harder than a diamond.

Hi, Over the past year, I've started finding the field of neuroscience very interesting. Can anyone recommend any books for a complete newbie on the field? And just out of curiosity, what graduate schools have good neuroscience/neurophysics programs?

I appear to have a very specific need, I require some sort of a book that covers the human nervous system from a to z, I need to know everything about it, what it's made of, what each part's function are, how the nerves behave at each particular sections of the body, the calculations that are...

where can i know what conference related to material science can be found? as topic

Homework Statement What function do you know from calculus is such that its first derivative is a constant multiple k of itself? (Do not use the function f(x) = 0.) Homework Equations The previous question asked what function was a derivative of itself - with the pretty easy answer...

Hi. I'm about to pick my undergraduate degree and I can't decide on the engineering course I want. I was thinking of applying for a BEng in Material Science or Material Engineering but I'm not too sure about the job prospects for a degree in these subjects. Can anyone here tell me if picking...

Hey, I'm wondering if there is a small reference book/sheet or so around for writing up experiments in undergraduate lab work, mostly in the error analysis? How did/do you go about deciding on how to calculate various errors? Thanks!

I am fairly new to quantum physics, I don't know much more than the double slit experiment and schrodinger's cat paradox. Can anyone tell me what would be a good subject to read about to be able to "understand" quantum physics? Superposition? Entanglement? Also, if anyone has any good...

Hi, I'm looking for some additional reading material while preparing for an E&M course. I'm going through Jackson and Griffiths, and I'd like to read a few scientific papers that will be good "E&M exercises." Anybody have papers in mind? Any suggestions for an intro to plasma containment?

Dear Physics Forums members, I humbly ask your guidance on a project I've just started :blushing:. I need to find a material that can be fabricated for a device that is to be placed in a car engine compartment. Forged, cast or cut, it must withstand the heat of the engine (although it will...

I understand that the engineering stress-strain curve of different material under tension test is different, but for the sake of simplicity the scope of this discussion will be for a general ductile material. If you have to pick a specify example, I think perhaps you can use steel or iron...

The way I study is I read through the course book and while I read I write down everything that I feel is important, but this takes a lot of time and its not very effective. Typically the things I will write down are: 1.Theorems 2.Proofs 3.Equations- and how they arrived at the equation...

Hi, I need to know what is expected to happen if say a wave (say a sine wave or en exponential wave) passe through an isothermal gas or a liquid (with compressibility). So the governing equations are the Euler equations. what is expected to happen if the initial velocity of the gas or the...

Cost is not really an issue (to an extent). The only requirements are that it is as strong and thin as possible whilst remaining *slightly* flexible. I know very little about this so any help is appreciated

Hey there, I am currently working on creating models in Abaqus of Wrist implants to see how they respond under different loading conditions. I have used Mimics to export orphan meshes of the wrist bones and also imported the wrist implant itself. My simulations seems to be running fine all...

Well, the thing is that since one year or more I'm trying to find a non toxic compound that can be done mixing water with "something", I need that the result of that has "like gum" properties, or a high density foam (like a hard mattress). I don't know much about chemistry but I think there must...

http://community.accelrys.com/servlet/JiveServlet/showImage/2-14223-12512/%E5%9B%BE%E7%89%871.png I want to assign displacement to the top edge of the above model in Material Studio. How to realize it ? Thank you !