Sound

[Alok Chaturvedi]

Can we determine the type of sound produced on collision of two objects without actually hitting each other by study about objects properties............. As we know different types of materials collision produce different type of sound.

[mathematic]

My guess: In theory, yes. However I suspect the equations involved would be extremely difficult to solve.

[Sensei]

As we know different types of materials collision produce different type of sound.

 

Even different length, size and shapes of the same material are giving different sound...

[studiot]

Why do you want to do this?

 

I ask because there is a recognised allied technique called audio signature analysis.

 

This works in one of two ways.

 

Structures and machines naturally produce vibratory signals that can be picked up with a microphone and analysed for fault conditions.

It is said that a good mechanic can tell what is wrong with your car by listening.

 

Additionally response to imposed signals can be tested in the same way.

Edited August 7, 2014 by studiot

[Enthalpy]

Materials' properties for shocks aren't well known. Metals and ceramics are known for shocks at small speed that stay below the proof stress. Plastics and elastomers aren't accurately known. Inelastic flow isn't accurately known, and depends much on each material sample.

 

And then you have the shape and size of the objects. For real cases, it needs a software to evaluate the sound propagation is the parts and then in the air.

[Alok Chaturvedi]

I just want to know if any research paper has been published on this topic??

[Enthalpy]

Specialized, yes: for music instruments. Musicians use drumsticks or hammers of varied hardness so percussion instruments give a more or less hard sound.

 

I other areas, I dont' know.