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<div class="moz-cite-prefix">On 6/23/2023 5:28 PM, Alan James via
Personal_Submersibles wrote:<br>
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cite="mid:2024664532.4078437.1687512534536@mail.yahoo.com">
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I was thinking about the carbon fibre hull & wondered whether
the heat differential from the outside to the inside on the 5"
thick hull had anything to do with the Titan crushing.
<div>At the wreck the water temperature is around 3°C & inside
the sub it may be 24C (guessing). The carbon fibre is a great
insulator so the outer face of the hull could be relatively
stiffer due to the cold & take up more of the pressure than
the more softer inner layers. Through cycling the outer layers
could weaken. This would be unique to the submarine environment
because I dont know anywhere else they would use 5" thick carbon
fibre in freezing temperatures.</div>
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<p>Aircraft come to mind. A wing spar of a large airplane flying at
high altitude.</p>
<p>Marc de Piolenc<br>
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<div>On Fri, 23 Jun 2023 at 6:48 pm, Alec Smyth via
Personal_Submersibles</div>
<div><a class="moz-txt-link-rfc2396E" href="mailto:personal_submersibles@psubs.org"><personal_submersibles@psubs.org></a> wrote:</div>
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<pre class="moz-signature" cols="72">--
Archivale catalog: <a class="moz-txt-link-freetext" href="http://www.archivale.com">http://www.archivale.com</a>
Mass Flow (ducted fans): <a class="moz-txt-link-freetext" href="http://massflow.archivale.com">http://massflow.archivale.com</a>
ProZ profile: <a class="moz-txt-link-freetext" href="https://www.proz.com/profile/639380">https://www.proz.com/profile/639380</a>
Substack account: <a class="moz-txt-link-freetext" href="https://fmarcdepiolenc.substack.com">https://fmarcdepiolenc.substack.com</a>
Pinterest: <a class="moz-txt-link-freetext" href="https://www.pinterest.ph/piolenc">https://www.pinterest.ph/piolenc</a></pre>
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