Is this possible? We ordered triple glass unit with heat strengthened inner lite instead of tempered. Is there any solution for this? I have a 2mm chip in the inside of my hurricane impact door. You cannot feel it from the inside or the outside as it is in between the glass. The vender says it is too small to worry about. I feel as if it is compromising the integrity of the door and is still under warranty and should be replaced. Hi Kristin, If the glass in question is tempered glass, then the chip was in the glass before it was tempered.
In which case your supplier is correct in his assessment. If howvere, the glass is plain float laminated and is chipped, then there is a slight inherent weakness at the point of the chip, which could lead to cracking in the future if the glass is stressed. Ourshower door exploded at about am this morning. We were sound asleep and no one wad in the bathroom,thank goodbess. Excellent article ; Very informative, concise and to the point.
Bernard Heeney, Jones Engineering group, Ireland. We have a terrace aluminium sliding door. We went back to our apt. We have a good idea as to how glass was broken, but we have been told that by resting carton on glass, this causes thermal breakages. Please help. I also have photos of breakage in case anyone wants to see. Hi, Yes this is possible. Because it causes glass to heat and cool at different areas, leads to occur thermal stresses.
In solar module manufacturing, sudden breakage of glass inside laminator which point of propagation is at edge could it be because of inclusion or stone? Pls give me some suggestions. My window has spontaneously shattered on a hot night.
Should the manufacturer pay? They say No As it is over 3 years warranty. I have one incident on my handed over project. Laminated balustrade slope glass has broken and hanged outside. There was no impact mark on glass. Even how come both internal glass has broken. Any faced similar situation and can guide. Good day Michael L. I am impressed by reading your article, I found it a very informative post about Spontaneous Glass Breakage: Why it happens and what to do about it.
This post is very useful for everyone. Your article is great I loved it and i will love to read more from you, dear. I need to remove some damaged wood for replacement. Will cut using a small circular saw and an oscillating saw. I like how you have explained the problem and the solution too. I have seen similar information at one place, you can also see on Grandglass. You would get to know about the spontaneous glass breakage and why it happens and what to do about it.
I enjoyed reading this article. It makes the work straight and easy for us. Using an atomic force microscope AFM , researchers examined fractured glass at the nanometer scale and found rough, metal-like surfaces. That prompted some to wonder whether the ways in which glass and metal break are really so different after all. The researchers placed a 4 x 4 x millimeter block of glass vertically inside a chamber and slowly squeezed on the small top and bottom faces with a compression machine.
A one-millimeter-diameter hole went horizontally through the middle of the block. The squeezing pressure caused it to bow apart in the middle, and cracks slowly propagated vertically up and down from the hole. The team used an atomic force microscope AFM to watch one resulting crack as it developed. The AFM, which measures the topography of a surface, revealed tiny valleys ahead of the crack tip, and the team showed that these were nanoscale damage cavities.
It seems like it should break less easily than plastic because it's stronger than plastic. Glass is brittle because it has many microscopic cracks in it which act as seeds for a fracture. If you can make glass without these cracks, as is done in fiberglass, then it is not so fragile.
Polymers that aren't brittle are glasses with long-chain or crosslinked long-chain molecules or mixtures. Glass, on the other hand, is just a badly crystallized bunch of small not-very-sticky silicate molecules. So, when a polyethylene sample fails under tensile stress, it stretches and doesn't snap back , but only the linking between adjacent chains is broken, the chains may stay intact and just straighten out a bit under stress.
Because the chains are intact, there's stiffer resistance to tension when stretched because the chains are now oriented axially by tension, having been previously randomly jumbled and disoriented. Glass, having no such inner fibers, just opens up a crack and lets go. The high stress at the leading edge of a crack generally makes the first crack to open propogate all the way across a tensile strength specimen.
Glass actually has a higher tensile strength than plastic but it still breaks more easily when it falls. Suppose you have a nanosmooth floor made of the hardest material diamond made by brittle fracturing a diamond crystal along its cleavage plane. When ever a sphere of any substance lands on it, it will dent when the area of contact has more strees than it can handle which is similar to its tensile strengh if it's a malleable material or form a circular crack around the area of contact if it's a brittle material.
When ever a sphere of a material hits the floor, the size of the area of contact in the collision is nonzero because it's not perfectly rigid. The maximum stress is at the area of contact and is approximately the mass of the sphere times the collisional acceleration divided by the square of the size of the area of contact.
A sphere made of a brittle material will form a crack when the maximum stress exceeds a certain value approximately equal to the strength of the material. We want to determine the speed a sphere must hit the diamond floor at in order to form a crack as a function of sheer modulus, strength, and density. From the square cube law, the speed is independent of the size of the sphere for a given density, sheer modulus and strength.
According to my answer at Why are so many forces explainable using inverse squares when space is three dimensional? Lab details conditions to decontaminate disposable masks 2 minutes ago.
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