https://marspedia.org/api.php?action=feedcontributions&user=208.109.154.182&feedformat=atomMarspedia - User contributions [en]2024-03-29T09:46:22ZUser contributionsMediaWiki 1.34.2https://marspedia.org/index.php?title=Wear_lifespan&diff=6321Wear lifespan2012-01-17T14:46:37Z<p>208.109.154.182: /* Objects */</p>
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<div>Every machine is subject to '''wear''', which results in a limited '''lifetime'''. There is mechanical wear and wear by [[radiation]]. Also, [[chemistry|chemical]] processes inside every material cause changes in the structure, lost of strength, etc.<br />
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This page collects data about the wear lifetime of many materials and machines with regard to the [[Mars|Martian]] [[environmental conditions]] and indoor conditions.<br />
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==Materials==<br />
Many [[synthetic materials]] become brittle due to decomposition effects, depending on temperature.<br />
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{|<br />
|-<br />
|style="width:30%;border:1px solid #888888;padding:5px 5px 5px 5px;background:#CCCCCC"|<br />
material<br />
|style="width:20%;border:1px solid #888888;padding:5px 5px 5px 5px;background:#CCCCCC"|<br />
wear lifespan<br />
|style="width:50%;border:1px solid #888888;padding:5px 5px 5px 5px;background:#CCCCCC"|<br />
comments<br />
|-<br />
|style="border:1px solid #888888;padding:5px 5px 5px 5px"|<br />
[[silicone]]<br />
|style="border:1px solid #888888;padding:5px 5px 5px 5px"|<br />
?<br />
|style="border:1px solid #888888;padding:5px 5px 5px 5px"|<br />
under Martian radiation conditions<br />
|-<br />
|style="border:1px solid #888888;padding:5px 5px 5px 5px"|<br />
[[polyethylene]]<br />
|style="border:1px solid #888888;padding:5px 5px 5px 5px"|<br />
?<br />
|style="border:1px solid #888888;padding:5px 5px 5px 5px"|<br />
with polymer plasticiser<br />
|}<br />
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I suppsoe that sounds and smells just about right.<br />
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==Open issues==<br />
*How many m<sup>3</sup> of basalt can be processed by [[digging machine]]s before the cutting tool must be replaced?<br />
*What sort of clothes has a maximum lifespan? How many years can it be worn?<br />
*What is the effect of radiation? We need exact figures, how the Martian conditions influence the usability of certain materials.<br />
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[[Category:Material]]<br />
[[Category:Technology]]</div>208.109.154.182