Re: [PSUBS-MAILIST] Viewport Toughness

["Adam Lawrence" <adteleka@in-tch.com>]

>From what I have read, when a viewport breaks it starts by extruding itself
into the flange and then final failure is like a shotgun going off. Also,
failure initiates on the inside surface, where the acrylic is in tension.
Test it, that's the only way you'll know!

Adam


----- Original Message -----
From: "pierre&marie" <poulin.carrier@videotron.ca>
To: <personal_submersibles@psubs.org>
Sent: Monday, October 06, 2003 5:49 AM
Subject: [PSUBS-MAILIST] Viewport Toughness


> Hi People!
>
> I've been to a house building show here in cold Canada and there was a
boot
> that sold "unbreakable" windows for thief.
>
> They say that there technologie can change a normal window into a bullet
> proof window.
>
> The basic of that method is to put a high resistance thin plastic film
that
> stick on the window. Almost like a windshield. You should see me comming
> from now... I asked if we can put that film on acrylic and the said yes.
>
> Do you think that this could be helpful for psubs? It would not augment to
> strenght of the viewport but if it break it could prevent water from
comming
> inside the sub or prevent the viewport from imploding?
>
> Comments?
>
> Pierre "Viewport Strenghtener Technicien" Poulin
>