Petn1933
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Comparison between Keto RDX;RDX;PETN
This test was done by my friend to measure the power of k6 and compare it with RDX and PETN. All 3 samples are pressed by hand in a plastic syringe
and the thickness of the iron is 6mm.
As you can see in the picture, the power of keto RDX has been beyond my imagination, at least!
      
[Edited on 25-5-2021 by Petn1933]
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caterpillar
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the mix of RDX + keto-RDX can be prepared, using urea, hexamine, and mixed acid. it would be interesting to test such a mix and compare it with pure
compounds.
Women are more perilous sometimes, than any hi explosive.
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MineMan
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Does literature show reports of higher VOD? Because this looks more then a few hundred m/s. Could it be it’s more sensitive to imitation? This is
confusing.
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Petn1933
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Quote: Originally posted by MineMan  | | Does literature show reports of higher VOD? Because this looks more then a few hundred m/s. Could it be it’s more sensitive to imitation? This is
confusing. |
According to the sources, k6 vod is about 9170m/s which is one particle higher than the maximum vod of hmx. The heat and pressure of the explosion are
approximately equal to hmx. Its sensitivity to shock is higher than rdx
[Edited on 26-5-2021 by Petn1933]
[Edited on 26-5-2021 by Petn1933]
[Edited on 26-5-2021 by Petn1933]
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MineMan
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How does a few extra hundred m/s make that big of a difference unless we are very close to the sonic velocity of the steel... which we far exceed??
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MineMan
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| Quote: Originally posted by Petn1933 | | Quote: Originally posted by MineMan | | Does literature show reports of higher VOD? Because this looks more then a few hundred m/s. Could it be it’s more sensitive to imitation? This is
confusing. |
According to the sources, k6 vod is about 9170m/s which is one particle higher than the maximum vod of hmx. The heat and pressure of the explosion are
approximately equal to hmx. Its sensitivity to shock is higher than rdx |
Where is that document from. I would like to research those other materials further. 7kj/g wow.
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Petn1933
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| Quote: Originally posted by MineMan | | Quote: Originally posted by Petn1933 | | Quote: Originally posted by MineMan | | Does literature show reports of higher VOD? Because this looks more then a few hundred m/s. Could it be it’s more sensitive to imitation? This is
confusing. |
According to the sources, k6 vod is about 9170m/s which is one particle higher than the maximum vod of hmx. The heat and pressure of the explosion are
approximately equal to hmx. Its sensitivity to shock is higher than rdx |
Where is that document from. I would like to research those other materials further. 7kj/g wow. |
http://www.wydawnictwa.ipo.waw.pl/cejem/Cejem-8-4-2011/Smirn...
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Microtek
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Was the explosives compared based on weight or volume? Equal weight is probably the most obvious, but it is not a trivial choice. At lower charge
weights, the detonation will not have time to stabilize, so other effects (such as sensitivity and thickness of the CJ zone) become important. There
is also the question of how K-6 responds to pressing. RDX is quite difficult to get to 95% TMD so if K-6 is easier, you will get a higher VOD and Pcj
from the sample.
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MineMan
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What is the best procedure for K6? Is it better yields then RDX?
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Petn1933
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We used this:
https://www.sciencemadness.org/whisper/files.php?pid=656932&...
hdn method
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MineMan
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Who is we? Is this account used by multiple persons.
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Petn1933
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We mean, me and my friend. No, this account is for me. He is my colleague and he is not here.
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underground
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I was always wondering if K6 can be made without concentrated NA but with just concentrated SA and dry nitrate salt.
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MineMan
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I want to say yes, for the simple fact that I want it to be true!
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hissingnoise
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I can also see that the first shot 'shock hardened' the steel, leading to ambiguous results in subsequent firings...
[Edited on 28-7-2021 by hissingnoise]
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MineMan
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| Quote: Originally posted by hissingnoise |
I can also see that the first shot 'shock hardened' the steel, leading to ambiguous results in subsequent firings...
Can you explain more? How much can shock hardening increase hardness. Say if the steel is at 42 Rockwell, can it match regular quenching techniques.
[Edited on 28-7-2021 by hissingnoise] |
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Fulmen
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I don't buy that. Any shock hardening should be confined to the contact area. Work hardening would be limited to the deformed area. Multiple charges
on the same sample isn't the best science, but I doubt it changed the results significantly in this case. Either way there are so many possible
variables here that it's hard to draw any absolute conclusions.
We're not banging rocks together here. We know how to put a man back together.
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hissingnoise
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| Quote: | | Can you explain more? |
The effect is well referenced on the 'net, Wikipedia, etc.
| Quote: | | Either way there are so many possible variables here that it's hard to draw any absolute conclusions. |
Well, you got that bit right ─ no, but seriously, the shock-wave will have affected the MS along its entire length, with
pronounced effects at the point of contact, obviously.
This paper deals with it in some detail.
The effect, I found, is most easily demonstrated by a potent primary like SA on soft al. sheet.
The hardening produced is really quite surprising...
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Fulmen
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Nice paper, thanks. However, it does not cover edge effects at all (except for avoiding them). I would expect the pressure wave to dissipate almost
instantlyfairly quickly to below the needed 130kbars when traveling to the sides. Just look at witness plates, the imprint of the charge can be
surprisingly sharp. It's bad (but understandable) methodology for sure, but it would surprise me if that was the biggest culprit at the distances
we're dealing with here.
Sadly I don't have any witness plates that I could test...
We're not banging rocks together here. We know how to put a man back together.
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MineMan
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I don’t see how this hardening could effect the other holes? Even if hardened, the sonic velocity will not change more than 1-2km/s… therefore
these EM would still cut it.
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hissingnoise
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Indeed, you may both be right, but the OP's 'results' look pretty suspiciously over the top ─ we don't know if he used the reaction mixture straight
or whether he separated the ketone from the mix, for instance.
If it's the RDX mixture, then no significant difference would likely be apparent...
But to get any meaningful results, he would need to redo the exp. using separate plates and purified K-6.
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Fulmen
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Agreed, something does look off.
We're not banging rocks together here. We know how to put a man back together.
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MineMan
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You can tell each sample is pressed to a different volume, I think this is enough to explain it.
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