Weird Signage
Weird signage #1
At Jeni's ice cream there is a small label affixed to the clear windows of the dipping cabinets. It reads:
"To maintain the clarity and beauty of your equipment please take care when cleaning. Use only clean water or a mild soap solution. Do not use harsh abrasives, chemicals, or gasoline as this may lead to CRAZING."
Gasoline?! CRAZING?!
Has anyone else ever heard of using gasoline to clean things with or more importantly has anyone ever heard of "Crazing."?
I think this company is just making stuff up.
Weird Sinage #2
On the way to Jacqui's work there is an billboard. On it is a menacing policeman pointing an accusatory finger out at passersby. The sign reads: "TURN THEM IN! Report littering and illegal dumping."
That's not necessarily the weird part, although it is a little off-putting to pointed at by a giant police officer every morning. The thing I find odd is the website dedicated to reporting offenders:
www.nailadumper.com
Was there no better name to be found than that? If I heard of that website I can't imagine what I would think it was for.
Seriously, nailadumper.com...who comes up with this stuff?
3 Comments:
nailadumper.
...
uhh...
Sounds a bit homoerotic to me...
Wow, nailadumper. That's freakin brilliant. That's right up there with First Assembly of God's first website www.fag.com
Crazing, also known as alligatoring, is a phenomenon that frequently precedes fracture in some glassy thermoplastic polymers. Crazing occurs in regions of high hydrostatic tension, or in regions of very localized yielding, which leads to the formation of interpenetrating microvoids and small fibrils. If an applied tensile load is sufficient, these bridges elongate and break, causing the microvoids to grow and coalesce; as microvoids coalesce, cracks begin to form.
A craze is different from a crack in that it can continue to support a load. Furthermore, the process of craze growth prior to cracking absorbs fracture energy and effectively increases the fracture toughness of a polymer. The initial energy absorption per square meter in a craze region has been found to be up to several hundred times that of the uncrazed region, but quickly decreases and levels off. Crazes form at highly stressed regions associated with scratches, flaws, and molecular inhomogeneities, and generally propagate perpendicular to the applied tension. Crazing occurs mostly in amorphous, brittle polymers like PS, PMMA and is typified by a whitening of the crazed region. The white color is caused by light-scattering from the fibrils.
One of the main differences between crazing and shear banding, another form of stress deformation, is that crazing occurs with an increase in volume, which shear banding does not. This means that under compression, many of these brittle, amorphous polymers will shear band rather than craze, as there is a contraction of volume instead of an increase. In addition, when crazing occurs, one will typically not observe "necking," or concentration of force upon one spot in a material. Rather, crazing will occur homogeneously throughout the material.
Crazing is also seen with some glazes used on pottery, on single ply roofing membranes and may be seen on concrete when good concrete practices are not followed.
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