Suppose avg. grain size, crystal structure, young's Modulus, fracture strength, velocity of sound and surface roughness of both the crushed crystals (before and after crushing ) and the crushing surfaces, as well as load on grinding surface, static/dynamic friction coefficients are known. Then, is it possible to estimate the crushing sound of the crystals?
Conversely, if crushing sound of the crystals are analyzed, is it possible to find any mathematical relation between the variables outlined?
I am asking the questions since crushing minerals and recording-analyzing the sound require no sophisticated instrument at all.
Please provide relevant research links.
Hi Sumit,
This is a very interesting question indeed. Recently I saw this post on iMechanica about "The sound of crack growth"
https://imechanica.org/comment/30187#comment-30187
Also, I have done some work on analysing sound emitted when materials break. Look at my RG profile
https://www.sciencedirect.com/science/article/pii/S2452321619304044
Article An extended in-situ method to improve the understanding of f...
Dear Sumit,
Sound of cracking crystals between two hard surface depends on couple of important metallurgical as well as mechanics factors such as increasing strains, grain distribution reaches log normal packing, coarsening of crystal grains, mis orientation angles, level of temperature distribution due to fraction between two surface with grain misalignment effect , critical grain size micro-cracking and thermal enhancement, cohesion crack nucleation, defects, cavities etc.
In general, If the size of the crystal grains is closed to the wavelength of the supersonic ray, the part will not be transparent to ultrasound, in this case the there will be no ultrasound bottom of signal. it is also seen that size of the crystal grain increases the intensity of supersonic wave decreases.
Sound products can be listen at high extrusion speeds.
Atomistic modeling is highly applicable in easy understanding of crack sound between hard metal.
Ashish
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