▲ 142 ▼ TIL about East Germany’s extremely durable drinking glass (ceramics.org) submitted 1 month ago by cm0002@literature.cafe to c/til@lemmy.ca 25 comments fedilink hide all child comments Superfest, chemically strengthened glass
[–] lyralycan@sh.itjust.works 10 points 1 month ago (6 children) Fancy! I wonder how it would've compared to Duralex. permalink fedilink source hideshow 6 child comments replies: [–] Warl0k3@lemmy.world 12 points 1 month ago (5 children) Chemically tempered glass is a great deal stronger than thermally tempered glass (up to 10x stronger than untreated glass vs. up to 2x, for an incredibly reductive yet illustrative oversimplification) permalink fedilink source parent hideshow 5 child comments replies: [–] DaGeek247@fedia.io 7 points 1 month ago (4 children) Are they mutually exclusive? I would love to see tempered glass combined with chemically hardened glass for an even more durable dinner set? permalink fedilink source parent hideshow 4 child comments replies: [–] Warl0k3@lemmy.world 6 points 1 month ago* (3 children) With the caveat that this is very much not my field (I just think it's neat): I believe you wouldn't see much of a benefit - they are different methods of achieving the same result (putting the surface of the glass under tension), and while chemically strengthened glass gives a more uniform result which gives greater strength, subsequently heat tempering that glass would likely not compound the effect. I also suspect that it would be exceedingly difficult to design a process where you could get the benefit of both techniques at once - chemically tempered glass requires a long cooling period, which is the inverse of the process to produce heat tempered glass. permalink fedilink source parent hideshow 3 child comments replies: [–] frank@sopuli.xyz 2 points 1 month ago (2 children) This is the idea behind a Prince Rupert Drop, yeah? So do the glasses have a point where they're frail? Like the lip of the rim or something? permalink fedilink source parent hideshow 2 child comments replies: [–] Warl0k3@lemmy.world 2 points 1 month ago* (last edited 1 month ago) (1 child) Yep, prince rupert* drops are thermally tempered glass. As I understand it (again this is not my field, I just think it's neat), prince rupert drops aren't "frail" at any one point exactly - the long tails are just as strong as the rest, but because they have such a tiny cross sectional area (thus the force you apply isn't distributed across a wide surface area) you're able to overcome the strength of the glass. That's why a failure there causes a cascade, because the force is otherwise evenly distributed throughout the whole surface. Because the glasses don't have a similar feature where the cross section becomes miniscule, they're not going to be significantly more or less frail at any one point. permalink fedilink source parent hideshow 1 child comment replies: [–] frank@sopuli.xyz 2 points 1 month ago Ah super cool! I worked as an engineer in an aluminum plant in the past, and I am always so blown away about how differently ceramics and metals behave. permalink fedilink source parent
[–] Warl0k3@lemmy.world 12 points 1 month ago (5 children) Chemically tempered glass is a great deal stronger than thermally tempered glass (up to 10x stronger than untreated glass vs. up to 2x, for an incredibly reductive yet illustrative oversimplification) permalink fedilink source parent hideshow 5 child comments replies: [–] DaGeek247@fedia.io 7 points 1 month ago (4 children) Are they mutually exclusive? I would love to see tempered glass combined with chemically hardened glass for an even more durable dinner set? permalink fedilink source parent hideshow 4 child comments replies: [–] Warl0k3@lemmy.world 6 points 1 month ago* (3 children) With the caveat that this is very much not my field (I just think it's neat): I believe you wouldn't see much of a benefit - they are different methods of achieving the same result (putting the surface of the glass under tension), and while chemically strengthened glass gives a more uniform result which gives greater strength, subsequently heat tempering that glass would likely not compound the effect. I also suspect that it would be exceedingly difficult to design a process where you could get the benefit of both techniques at once - chemically tempered glass requires a long cooling period, which is the inverse of the process to produce heat tempered glass. permalink fedilink source parent hideshow 3 child comments replies: [–] frank@sopuli.xyz 2 points 1 month ago (2 children) This is the idea behind a Prince Rupert Drop, yeah? So do the glasses have a point where they're frail? Like the lip of the rim or something? permalink fedilink source parent hideshow 2 child comments replies: [–] Warl0k3@lemmy.world 2 points 1 month ago* (last edited 1 month ago) (1 child) Yep, prince rupert* drops are thermally tempered glass. As I understand it (again this is not my field, I just think it's neat), prince rupert drops aren't "frail" at any one point exactly - the long tails are just as strong as the rest, but because they have such a tiny cross sectional area (thus the force you apply isn't distributed across a wide surface area) you're able to overcome the strength of the glass. That's why a failure there causes a cascade, because the force is otherwise evenly distributed throughout the whole surface. Because the glasses don't have a similar feature where the cross section becomes miniscule, they're not going to be significantly more or less frail at any one point. permalink fedilink source parent hideshow 1 child comment replies: [–] frank@sopuli.xyz 2 points 1 month ago Ah super cool! I worked as an engineer in an aluminum plant in the past, and I am always so blown away about how differently ceramics and metals behave. permalink fedilink source parent
[–] DaGeek247@fedia.io 7 points 1 month ago (4 children) Are they mutually exclusive? I would love to see tempered glass combined with chemically hardened glass for an even more durable dinner set? permalink fedilink source parent hideshow 4 child comments replies: [–] Warl0k3@lemmy.world 6 points 1 month ago* (3 children) With the caveat that this is very much not my field (I just think it's neat): I believe you wouldn't see much of a benefit - they are different methods of achieving the same result (putting the surface of the glass under tension), and while chemically strengthened glass gives a more uniform result which gives greater strength, subsequently heat tempering that glass would likely not compound the effect. I also suspect that it would be exceedingly difficult to design a process where you could get the benefit of both techniques at once - chemically tempered glass requires a long cooling period, which is the inverse of the process to produce heat tempered glass. permalink fedilink source parent hideshow 3 child comments replies: [–] frank@sopuli.xyz 2 points 1 month ago (2 children) This is the idea behind a Prince Rupert Drop, yeah? So do the glasses have a point where they're frail? Like the lip of the rim or something? permalink fedilink source parent hideshow 2 child comments replies: [–] Warl0k3@lemmy.world 2 points 1 month ago* (last edited 1 month ago) (1 child) Yep, prince rupert* drops are thermally tempered glass. As I understand it (again this is not my field, I just think it's neat), prince rupert drops aren't "frail" at any one point exactly - the long tails are just as strong as the rest, but because they have such a tiny cross sectional area (thus the force you apply isn't distributed across a wide surface area) you're able to overcome the strength of the glass. That's why a failure there causes a cascade, because the force is otherwise evenly distributed throughout the whole surface. Because the glasses don't have a similar feature where the cross section becomes miniscule, they're not going to be significantly more or less frail at any one point. permalink fedilink source parent hideshow 1 child comment replies: [–] frank@sopuli.xyz 2 points 1 month ago Ah super cool! I worked as an engineer in an aluminum plant in the past, and I am always so blown away about how differently ceramics and metals behave. permalink fedilink source parent
[–] Warl0k3@lemmy.world 6 points 1 month ago* (3 children) With the caveat that this is very much not my field (I just think it's neat): I believe you wouldn't see much of a benefit - they are different methods of achieving the same result (putting the surface of the glass under tension), and while chemically strengthened glass gives a more uniform result which gives greater strength, subsequently heat tempering that glass would likely not compound the effect. I also suspect that it would be exceedingly difficult to design a process where you could get the benefit of both techniques at once - chemically tempered glass requires a long cooling period, which is the inverse of the process to produce heat tempered glass. permalink fedilink source parent hideshow 3 child comments replies: [–] frank@sopuli.xyz 2 points 1 month ago (2 children) This is the idea behind a Prince Rupert Drop, yeah? So do the glasses have a point where they're frail? Like the lip of the rim or something? permalink fedilink source parent hideshow 2 child comments replies: [–] Warl0k3@lemmy.world 2 points 1 month ago* (last edited 1 month ago) (1 child) Yep, prince rupert* drops are thermally tempered glass. As I understand it (again this is not my field, I just think it's neat), prince rupert drops aren't "frail" at any one point exactly - the long tails are just as strong as the rest, but because they have such a tiny cross sectional area (thus the force you apply isn't distributed across a wide surface area) you're able to overcome the strength of the glass. That's why a failure there causes a cascade, because the force is otherwise evenly distributed throughout the whole surface. Because the glasses don't have a similar feature where the cross section becomes miniscule, they're not going to be significantly more or less frail at any one point. permalink fedilink source parent hideshow 1 child comment replies: [–] frank@sopuli.xyz 2 points 1 month ago Ah super cool! I worked as an engineer in an aluminum plant in the past, and I am always so blown away about how differently ceramics and metals behave. permalink fedilink source parent
[–] frank@sopuli.xyz 2 points 1 month ago (2 children) This is the idea behind a Prince Rupert Drop, yeah? So do the glasses have a point where they're frail? Like the lip of the rim or something? permalink fedilink source parent hideshow 2 child comments replies: [–] Warl0k3@lemmy.world 2 points 1 month ago* (last edited 1 month ago) (1 child) Yep, prince rupert* drops are thermally tempered glass. As I understand it (again this is not my field, I just think it's neat), prince rupert drops aren't "frail" at any one point exactly - the long tails are just as strong as the rest, but because they have such a tiny cross sectional area (thus the force you apply isn't distributed across a wide surface area) you're able to overcome the strength of the glass. That's why a failure there causes a cascade, because the force is otherwise evenly distributed throughout the whole surface. Because the glasses don't have a similar feature where the cross section becomes miniscule, they're not going to be significantly more or less frail at any one point. permalink fedilink source parent hideshow 1 child comment replies: [–] frank@sopuli.xyz 2 points 1 month ago Ah super cool! I worked as an engineer in an aluminum plant in the past, and I am always so blown away about how differently ceramics and metals behave. permalink fedilink source parent
[–] Warl0k3@lemmy.world 2 points 1 month ago* (last edited 1 month ago) (1 child) Yep, prince rupert* drops are thermally tempered glass. As I understand it (again this is not my field, I just think it's neat), prince rupert drops aren't "frail" at any one point exactly - the long tails are just as strong as the rest, but because they have such a tiny cross sectional area (thus the force you apply isn't distributed across a wide surface area) you're able to overcome the strength of the glass. That's why a failure there causes a cascade, because the force is otherwise evenly distributed throughout the whole surface. Because the glasses don't have a similar feature where the cross section becomes miniscule, they're not going to be significantly more or less frail at any one point. permalink fedilink source parent hideshow 1 child comment replies: [–] frank@sopuli.xyz 2 points 1 month ago Ah super cool! I worked as an engineer in an aluminum plant in the past, and I am always so blown away about how differently ceramics and metals behave. permalink fedilink source parent
[–] frank@sopuli.xyz 2 points 1 month ago Ah super cool! I worked as an engineer in an aluminum plant in the past, and I am always so blown away about how differently ceramics and metals behave. permalink fedilink source parent