[meteorite-list] Centimeter Cubes

From: Drake <monel_at_meteoritecentral.com>
Date: Sat, 9 Jun 2007 06:20:57 -0400
Message-ID: <008f01c7aa7f$decd1820$01fea8c0_at_DADS>

Good point, and I agree. But, I have a slightly different motive. I have
wanted to get one ever since I saw one in the news papers when "they"
announced "possible fossilized bacteria in the Mars rock". (ALH1983??)
This was years before I started collecting meteorites.

I do failure analysis and many of my papers are peer reviewed. Placing a
quarter or a scale (AKA ruler) on or near a fracture/failure has always
been my MO. But, it's always looked, well, kind of "cheap". ...at least
for a paper that is being published. Having a centimeter cube will add a
bit of professionalism to my profession.

The other thing it does (in my profession) is that if I want to show the
bottom or particular side of the failed object, I can orientate the cube
with the position of the object. Hence, my "need" for the T, B, N, S, E,
and W. This helps with the lay-person reading my papers. Most
non-scientists only read my conclusion and look at the pictures.

Picture Caption:
"Failed bolt pictured next to centimeter cube. Catastrophic overload
bending moment is in the W direction. Fracture origin is at E"

I did find one and it's being shipped now. However, I became so
frustrated in my search that I sent out an RFQ to several gauge makers.
I'm going to have a bunch of them made for my peers and give them out as
Christmas presents.

Oh, yeah, The work for meteorites too. :-)

"Centimeter cubes: Not just for meteorites any more!"

Drake "Justification" Damerau



Quis Custodiet Ipsos Custodes

Drake "Doc" Damer?u
NAR Section 614
L3CC member
TRA 9934 L3
 
www.nepra.com
www.rocketmaterials.org
http://home.sprynet.com/~monel/home.htm

 
 


> -----Original Message-----
> From: meteorite-list-bounces at meteoritecentral.com
> [mailto:meteorite-list-bounces at meteoritecentral.com] On
> Behalf Of dean bessey
> Sent: Saturday, June 09, 2007 3:44 AM
> To: meteorite-list at meteoritecentral.com
> Subject: Re: [meteorite-list] Centimeter Cubes
>
>
> For years this topic has come up regularly as people
> try and get cubes for size.
> Whats wrong with using a coin in your photo for size?
> Everybody knows what the size of a USA 10 and 25 cent
> coin is but if not I am sure somebody would send you
> one or you could get one at a local coin store or when
> travelling. Everybody knows somebody from the USA. Then you
> could get a collection of a half dozen EU and australian
> coins to compare if somebody really wants to take sizes into
> account so as to cover all bases. Or if that is to much why
> is a centimeter cube somehow better than a centimeter ruler?
> (Which everybody already has).
> This centimeter cube fetish thing is a solution
> looking for a problem. Save yourself hassle and use a
> ruler or a coin. People will get the idea of the size
> of whatever it is that you are selling.
> Sincerely
> DEAN
>
>
>
>
>
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Received on Sat 09 Jun 2007 06:20:57 AM PDT