Properties
There are metals, in the realm of human knowledge, which have an ability to take a great deal of load.
Specimens, of some materials, measuring about 10 mm diameter (1 cm) can withstand loads of about 10 tons (10,000 kg.) without breaking. However, if that piece is already under a load of 10 tons and then an additional load of even 100 gm is added, it breaks. So, there are always limits and the ability to shoulder stress also depends on pre-existing loads.
Interestingly, there are those materials (like mild-steel and aluminum) which do not simply break. Consider a pre-existing 10 tons, add 100 gm. The piece deforms. It elongates and that 10 mm diameter reduces, tending to give it that very coveted hour-glass shape; and then, it snaps into two separate pieces.
Now, if that load is relieved just before it snaps, one may still be left with a single piece, but it has been forever changed. The extra length and reduced diameter do not click back into their original forms. This is known as the plastic zone of the material.
So, while it may be able to withstand considerable loads, being stubborn enough not to crack, there is always some deformation from which it cannot recover.
Such are the laws of physics governing the behavior of mettle.
Specimens, of some materials, measuring about 10 mm diameter (1 cm) can withstand loads of about 10 tons (10,000 kg.) without breaking. However, if that piece is already under a load of 10 tons and then an additional load of even 100 gm is added, it breaks. So, there are always limits and the ability to shoulder stress also depends on pre-existing loads.
Interestingly, there are those materials (like mild-steel and aluminum) which do not simply break. Consider a pre-existing 10 tons, add 100 gm. The piece deforms. It elongates and that 10 mm diameter reduces, tending to give it that very coveted hour-glass shape; and then, it snaps into two separate pieces.
Now, if that load is relieved just before it snaps, one may still be left with a single piece, but it has been forever changed. The extra length and reduced diameter do not click back into their original forms. This is known as the plastic zone of the material.
So, while it may be able to withstand considerable loads, being stubborn enough not to crack, there is always some deformation from which it cannot recover.
Such are the laws of physics governing the behavior of mettle.
posted by Woman?? | 2:05 pm
2 Messages:
Sometimes, the metal just takes on the new, more experienced shape, and still feels beautiful. And stronger, not fragile. I think.
Absolutely...
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