ebinmaine 67,435 #1 Posted December 10, 2022 https://newatlas.com/materials/toughest-material-simple-alloy/ 1 1 1 Share this post Link to post Share on other sites
953 nut 55,194 #2 Posted December 10, 2022 Wonder how well it will hold an edge? If you had a set of mower blades made of that stuff they would last forever. 2 2 Share this post Link to post Share on other sites
peter lena 8,610 #3 Posted December 10, 2022 @ebinmaine , still have 316, food grade stainless steel od,s / ends , incredible life span , even on plow edge wear blade , perforated , etc. scrap dumpster , pete 1 1 Share this post Link to post Share on other sites
Handy Don 12,214 #4 Posted December 10, 2022 Metallurgy is amazing! 1 Share this post Link to post Share on other sites
Pullstart 62,838 #5 Posted December 10, 2022 “500 megapascals square root meters”. I think I saw one of those the other day! I was walking around and I was like “woah! There’s a 500 megapascals square root meters!” 6 Share this post Link to post Share on other sites
squonk 41,071 #6 Posted December 10, 2022 1 hour ago, Pullstart said: “500 megapascals square root meters”. I think I saw one of those the other day! I was walking around and I was like “woah! There’s a 500 megapascals square root meters!” When I was a kid, we ate those for breakfast! 1 1 Share this post Link to post Share on other sites
SylvanLakeWH 25,535 #7 Posted December 10, 2022 1 hour ago, Pullstart said: “500 megapascals square root meters”. I think I saw one of those the other day! I was walking around and I was like “woah! There’s a 500 megapascals square root meters!” I hate math... 2 Share this post Link to post Share on other sites
Pullstart 62,838 #8 Posted December 10, 2022 46 minutes ago, SylvanLakeWH said: I hate math... unless it’s binarybinary? 1 Share this post Link to post Share on other sites
Jeff-C175 7,199 #9 Posted December 10, 2022 7 minutes ago, Pullstart said: unless it’s binarybinary? There are 10 kinds of people: Those that understand binary, and those that do not. 3 3 Share this post Link to post Share on other sites
SylvanLakeWH 25,535 #10 Posted December 10, 2022 7 minutes ago, Pullstart said: unless it’s binarybinary? Well... Learning binary is as easy as 01, 10, 11... 1 1 Share this post Link to post Share on other sites
Pullstart 62,838 #11 Posted December 10, 2022 8 minutes ago, SylvanLakeWH said: Well... Learning binary is as easy as 01, 10, 11... my eyes my eyes! 2 Share this post Link to post Share on other sites
wh500special 2,170 #12 Posted December 10, 2022 (edited) 3 hours ago, Handy Don said: Metallurgy is amazing! How true. I always thought metallurgists are (ahem) quirky…they have their own little world. That article and the ones that I ended up reading after it to try and understand what was going on there made me feel old. This topic of High Entropy Alloys came around after I had my classes that would have introduced such things. Dang. I tried to read the journal article for this but it is way over my head. Should have stayed in school… Toughness is a a strange property and not easy to understand. I sure don’t get it. It relates mostly to resistance to crack propagation under stress (or strain in special cases). It’s not always proportional to things that are intuitive like compressive or tensile strength or hardness and that mean the most to us in our daily lives and applications. Yet Strength wasn’t really mentioned for this new unusual alloy so I wonder… The low temp toughness suggests use for space and cryogenics which are brutal environments where our baseline material property references fall apart. MPa•m^(1/2) Radical units of measurement for sure. You notice a mention of crystal structure in the metal. That drives a lot of things in metallurgy. Including unexpected properties like why Titanium alloys are ideally suited to medical implants (e.g. joints) since it mimics the crystal structure of bone. Such fascinating stuff. cool. This is an example of pure research yielding a discovery with eventual implications. No use for this alloy yet, but the knowledge of its toughness might someday result in an energy revolution, a medical treatment, or who knows what else. 1 hour ago, SylvanLakeWH said: I hate math... You don’t have to love it but don’t hate math! It’s our most fundamental tool in a developed civilization! It’s a shame our early education system isn’t able to instill an appreciation for the beauty and applicability of math to our lives so we’re not so adverse to it as we get older. By the time our minds are mature enough to appreciate and deal with abstract math concepts our education system has already segregated us into tracks of those likely to use it and those who have other foci. I don’t know the solutions to this, but it’s an area where we should try to do better. Innovation in technical fields are highly dependent on a robust math background and we as a society let most of the population slip through the cracks. So much wasted potential. I have a fairly decent math background, but my dad is a true mathematician. He stopped at a master’s degree and i think missed his calling to be an academician. At 77 the things he can still do without reference material truly amaze. This is beyond him just doing mundane things like doing all the calculations in his head for the layout of a set of stairs or knowing the exact total for a basket full of groceries at the store before it’s rung up. It applies to abstract stuff too. Once in a while I’ll derive something at work that turns into an equation I don’t remember how to solve and he jumps right on it. Anyway, math is awesome. Steve Edited December 10, 2022 by wh500special 1 1 1 Share this post Link to post Share on other sites
wh500special 2,170 #13 Posted December 10, 2022 (edited) 1 hour ago, Jeff-C175 said: There are 10 kinds of people: Those that understand binary, and those that do not. I just thought of something. Wouldn’t this be “there is one kind of people: those who understand binary (1), and those who do not (0)”? 😛 I might be a zero here. steve Edited December 10, 2022 by wh500special 2 1 Share this post Link to post Share on other sites
SylvanLakeWH 25,535 #14 Posted December 10, 2022 1 hour ago, wh500special said: You don’t have to love it but don’t hate math! It’s our most fundamental tool in a developed civilization! It’s a shame our early education system isn’t able to instill an appreciation for the beauty and applicability of math to our lives so we’re not so adverse to it as we get older. By the time our minds are mature enough to appreciate and deal with abstract math concepts our education system has already segregated us into tracks of those likely to use it and those who have other foci. I don’t know the solutions to this, but it’s an area where we should try to do better. Innovation in technical fields are highly dependent on a robust math background and we as a society let most of the population slip through the cracks. So much wasted potential. I have a fairly decent math background, but my dad is a true mathematician. He stopped at a master’s degree and i think missed his calling to be an academician. At 77 the things he can still do without reference material truly amaze. This is beyond him just doing mundane things like doing all the calculations in his head for the layout of a set of stairs or knowing the exact total for a basket full of groceries at the store before it’s rung up. It applies to abstract stuff too. Once in a while I’ll derive something at work that turns into an equation I don’t remember how to solve and he jumps right on it. Anyway, math is awesome. Steve I was kidding... I don't hate math... I do have great appreciation for its fundamental use in understanding our world... Reminds me of a story... A binary mathematician walks into a bar and orders 10 beers... the bartender, a former mathematician, gives him 2 beers... Share this post Link to post Share on other sites
Handy Don 12,214 #15 Posted December 10, 2022 1 hour ago, wh500special said: It’s a shame our early education system isn’t able to instill an appreciation for the beauty From what I experienced and witnessed, for a long time the TEACHERS were not really enthused about math and that rubbed off. Wasting time for endless repeated exercises of already-understood concepts deadened many a student's interest but was easy to assign. I've long worked in the other direction: clarify the problem for someone and THEN get into the math that will help them solve it. This is a utilitarian approach but helpful to many. My first experience of the beauty didn't come until 11th grade and the Unit Circle! Another example: even after three years of college studying engineering, I didn't get WHY partial differential equations were relevant. Twenty years later I sat in on a class where the instructor asked if anyone thought it might be useful to compute the lift and drag on an airplane wing that changed shape along its length--"well yeah!" was the universal response. Then he demoed how to get that using partial DiffEQs! 58 minutes ago, wh500special said: I just thought of something. Wouldn’t this be “there is one kind of people: those who understand binary (1), and those who do not (0)”? A detailed explanation of the numeral "10" representing the quantity two might take the humor out of it. 1 Share this post Link to post Share on other sites
wh500special 2,170 #16 Posted December 10, 2022 I should have looked up binary notation before posting. I probably saw it somewhere in my past but certainly don’t recall it. Now that I’ve looked at it a ‘bit’ I can confirm I am still a zero. So that gives me something to read while I’m waiting on family to run their errands this day. I agree that our education methods suck the life out of math. I feel it’s critical to learn or memorize the basic facts by rote, but they need to introduce applications much sooner. While I don’t remember much about my own elementary math education, I was very frustrated by my daughter’s education. Finally now as a 10th grader (who was coincidentally just introduced to the unit circle!) it has become much more practical. Her school integrates the math and science curriculum so that is helpful. There have been several concepts that she first hit in science that math didn’t catch until a week or two later and i think that’s beneficial. There will always be differences in natural aptitude, but we seem to do a disservice tot he kids that don’t naturally pick up the initial concepts as quickly. as a non-educator, it’s easy and unfair for me to find fault with our system. But we don’t seem to be making progress towards improving things. Omg, the difference between ODE’s and PDE’s is huge. Maybe I should say the differential between them is huge. It didn’t manifest for me in aerodynamics since that’s not my field, but it shows up in reaction kinetics when multiple things react at differing and changing rates and also influence each other simultaneously. Yikes. it was frustrating when I was forced to do it as an assignment, but in hindsight it was fascinating. and Jim @SylvanLakeWH, I assumed you were being funny! Steve 1 1 Share this post Link to post Share on other sites
