Recent content by Rafa

I don't know the dimensions of your annular disc, but if you only need Young module and the material is not plstic (no linear elasticity) , may be you can try test without cut. Use the clamp to clamping at both sides of one radio.

If you know the sound speed you will "calculate" de Young module. You need the sound speed (for you frecuency) for draw a medical image.

¿what means for you less stress? Are you speaking about less Von Misses Stress, Treska,...? principal stress??

you can put a lineal strain gauge perpendicular to x and the gauge can not sense for force that come from x-axis

darkelf you can use the usual equations for elasticity but in cilindrical coordinates (polar). You have a stress of sigma sub r with sigma sub theta =0 and sigma sub z=0. Then you can solve the system to obtain the deformation

Define what means for you porosity factor and void factor. You can measure de pososity for Arquimedes, it is so simply like weigh and calculate the volumen. If you know the density of real material you can estimate the porosity

if epsilon 1 =0 then sigma 1 won't be 0 because if you limit the deformation you will hava a stress

All polymers material have a Tg . This is the temperature where the thermal eneergy is sufficient to break the secundary bondig between polimer chain. If temperature is higher than Tg then the material can "fluid", in this case Kic almost hasn`t sense because the material is little "solid" . The...

Only a question. Do the surface where the forze is applied bend? or this surface does not change. Because to seprate the force in horizontal with Fcos(alpha) and vertical (F sin (alpha) i will think in this surface or not??

1988 ajk give you the answer and for "Sadly, until the platform is built and set up I won't know how heavy it will be ". You can estimate it if you know what materials are been used and the size (dimensions) of platform

Yangloh, Can you explain a little? I don't think that one material can use for joining all metalls to ceramic unles your joing are "cold". I explain, I can "joint" two materials with plasticine or a resin or something like that, but this joining can not use in the conditions where you will...

I think that you are mixture differents things. K_I is the stress intensity factor that tells you how your material break if you have a inicial crack. 1.- If you material don't have any crack you can not apply Kic and you use Ultimate streght 2.- If you have a crack, you can not use neither...

Polycarbonate and ABS are chemical name for some polymers. Noryl, ryton, nylon... are trademark. You can get the same polymer with differents names (trademark). For specifications is better don't use trademaks

Thanks Macon, now I understand. The diffusion is lower but the solubility is higher and improves the posibility of treatment.

The process of carburization works via the implantation of carbon atoms into the surface layers of a metal. As metals are made up of atoms bound tightly into a metallic crystalline lattice, the implanted carbon atoms force their way into the crystal structure. The carburization is produce...