How Much Pressure Can Screen Withstand?

Discussion in 'iPad' started by cakbar, May 5, 2010.

  1. cakbar macrumors regular

    Apr 30, 2008
    Does anyone have any idea/guess how much pressure the iPad screen can withstand before cracking? Obviously I'm not concerned about finger pressure, but what about a small pet walking across it or jumping on it, or a baby/child sitting/walking on it?
  2. jasonycurtis macrumors newbie

    Jan 25, 2009
    My 240lb brother in law sat on mine for a 30 minute car ride about 3 days after I bought it. No issues. The biggest surprise was that he never realized he was sitting on the iPad.
  3. CalMin macrumors 6502a


    Nov 8, 2007
    The screen seems quite tough but I won't be testing any of these scenarios for you. As a guess, you might get away with it, but I don't think the iPad was designed with these abuses in mind. Keep it somewhere safe.
  4. richpjr macrumors 68030


    May 9, 2006
    According to the MacWorld iPad stress test:
  5. msduncan macrumors 6502

    Jan 27, 2010
    So it is also comfortable along with being awesome. :D
  6. bjobes macrumors regular

    Jul 21, 2008
    Needed a pad:eek:

  7. r0k macrumors 68040


    Mar 3, 2008
    There was a waste of a thread around here earlier today about some guys using an iPad as a skateboard which of course involved destroying the device. I was surprised to see the screen cracked as soon as the first doofus stepped on it. I had expected they would have to abuse it a bit more (like the bozos with the baseball bat) to get it to crack.

    I would not assume you can sit on your iPad unless you have $500-829 lying around you don't care about losing. Perhaps the local casino would offer better odds of winning than sitting on your iPad (which isn't saying much). It isn't designed to sit on and the guy who wrote that forum post about his 240 pound brother isn't going to come over to your house and pay to replace your iPad after you break it.
  8. emaja macrumors 68000

    May 3, 2005
    Chicago, IL
    Why not pick up all 1.5 lbs. of it and put it in a place that the kids or animals can't step on it? I learned with my first kid that they will get into whatever they can, so put it in a place that they can't.

    Not hard at all.
  9. goldenaustin macrumors member

    Jul 21, 2009
    I left the iPad on a granite countertop for a hot second, and my sister's bf comes in and chats for a little. I wanted to look something up, and started looking around for the iPad. After a good minute of looking around the kitchen, my sister's bf realized he was leaning on the countertop with his arms folded right on top of my iPad. First thought, "FML!", but it was unscathed. He's maybe close to 200lbs, obviously not all of the weight on it, but still a good amount of pressure on the ipad. I was more concerned about the shape of the casing, and not so much the screen. No harm, no foul. Guess the cold granite felt the same as the iPad glass, that he didn't realize.
  10. TerryJoyce macrumors member


    Aug 24, 2009
  11. malnar macrumors 6502a


    Aug 20, 2008
    This depends greatly on the kind of pressure applied. Think of the old bed of nails trick - the nails don't hurt because they're close together and spread the weight around. Less nails spread further apart would be a bloody, painful mess. Pressure points. A guy sitting on the Ipad is spreading his weight across the whole surface of the screen while someone standing on the screen is just a couple of high-pressure points.

    I'm still surprised the screen can withstand the weight of someone sitting on it so well, but not at all surprised the screen would shatter when someone stands on it. That's why I wanted a hard-shell case that covers the screen to protect it from impacts of things in, say, a bag. You never know when you might stumble and fall in such a way that your power brick lands right on the screen, and that's exactly the type of pressure that WILL destroy the screen. All these cases that protect only the back, I don't get it. Protect the screen!
  12. msavwah macrumors 6502

    Apr 5, 2010
    I woke up one night and my cat was standing on the thing. I swatted him off and it's fine. This was before I got my case.
    My cat knew exactly what he was doing I'm sure of it. ;)
    Little bastard
  13. colourtheatre macrumors regular

    Jan 28, 2010
    someone's off the christmas list :p
  14. ct2k7 macrumors 603


    Aug 29, 2008
    London or Florida
    If someone can give me the stress and strain values, then I can work out the Young's Modulus of the glass.

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