New answers tagged material-science
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How to find the impact force needed to break an object?
On a microscopic level: when we break something into, say, two pieces, we create brand new fresh surface area where those two pieces were once joined. Because it takes a certain specific amount of ...
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How to find the impact force needed to break an object?
This is best done experimentally. By breaking the object by an impact and measuring the required force.
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How to find the impact force needed to break an object?
I’m aware of tests in safety standards that require a minimum level of impact resistance. But these tests usually don’t involve testing to failure. Individual manufacturers, on the other hand, often ...
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Condensed matter physics application to undesrstand physics of failure
Professor Michael Marder's group at U Texas Austin studies crack propagation and failure as a condensed matter person. I imagine many other people do as well.
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Are solids with the same density as air possible?
You could try making a solid foam like expanded polystyrene with closed cells and fill the cells with hydrogen or helium during the production process. I think the closed cells would have to be fairly ...
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Accepted
Are solids with the same density as air possible?
It's not just the density of the material that would matter, but the acoustic impedance. To transmit sound waves without reflection, you would need a material with an acoustic impedance equal to that ...
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Are solids with the same density as air possible?
Density is a measure of mass per unit volume. Solids, by definition, have closely packed particles, resulting in a much higher density than gases. Air, as a gas, has widely spaced molecules, leading ...
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Are solids with the same density as air possible?
What makes gas distinct from liquids and solids is that its atoms are so far from each other, that the interactions between them are negligible. We speak here about hundreds or thousands of atomic ...
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Which better conducts vibration: wood or metal?
To answer the direct question, I don't think there is a simple answer that either metal is better or wood is better. Figuring that out probably requires to know the frequency of the vibration, the ...
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Which better conducts vibration: wood or metal?
There are 2 factors to consider about vibration: elasticity and damping. The car suspension has a spring to avoid that any load is transmitted at once to the car. However it has the drawback of ...
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Which better conducts vibration: wood or metal?
I mostly agree with the previous answer, although if the excitation frequency matches the natural frequency of the box springs with you on the bed, then things could get worse. But that is unlikely. ...
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Which better conducts vibration: wood or metal?
For the noise and vibration spectrum generated by a garage door opener under your rooms, I doubt that you would experience a difference between a steel and a wood frame.
For vibration isolation I ...
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