Mechanics of Composite Materials EML4230                                                                                                     EML6232

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Love and composites Rebekah Freilich So there I was awaiting my date Wondering what kind of substance he will have Which bar will he try to take me to Will I fall head over heals or will I just fall apart. I am hoping he will take me to the S bar To drink my stress into strain, which hopefully he can massage away And not to the Q bar will just transform all my global strain into global stress Which cannot be alleviated by just a massage. That will require that he gets me lasagna to go And snuggles up to watch a movie of my choice Will he fail due to the stress of watching a chick flick? Or will it be some combination of the stress and strain? Will he change me somehow or leave no impression at all? Guess it will depend on which way he tries to pull me in And if we are stronger together as one rather than two But I cannot answer these questions till I meet him and examine his properties.   Chapter by Chapter Elliot Rice Dr. Kaw is too raw, he wrote a book, composite materials, It's actually tight, I read it every night. In my dreams it's all I see. Glass, boron, graphite, all night, epoxy, aluminum, polyamide, all night. Is this the "The Matrix" or real life? Actually it's linear algebra, like Comp Methods round two, yeah he wrote that book too. Combine that with mechanics of materials, I know you not serious. All that for a few laminas? Lamina, laminate, is it not the same? You want to know, take the class, Kaw will set you straight. Get the book, come to class, open your mind, and do NOT bring the TI-89. Where to start? Ask Dan Rather, I'm sure he'll text you from the Dreamliner, you know Dr. Kaw's favorite plane. Go to chapter 1, read it all, learn the history, you know it'll be on the quiz. Chapter 2, before we start, block out, out of plane loads, now like Batman Begins the fun begins. Macro-mechanical analysis, compliance, stiffness, Q-bar, S-bar matrices, "lasagna to go", It's all important, it's all related besides there's a whole test on it yo. Chapter 3, micro-mechanical analysis, fiber, matrix, weight, volume fractions, they all sum to 1. Chapter 4, It's not a bore, it's based on codes, and finally laminates. Mid plane strains, mid plane curvatures, you'll need them both if you want global strain. Chapter 5, designing using composites, from a pressure vessel to a drive shaft. To ease the pain use PROMAL, awarding winning software, designed by… I bet you know who. Overwhelmed, intimidated, why, Dr. Kaw says he's knows "very little." December 5th, when it's over you can tell your kids "it's not magic guys" But instead "high school algebra."   Worth My Time Luke Snyder When an engineer designs a composite, he thinks of all that he can gain, He thinks, "What is my application, and what material properties do I want to obtain?" He finds the fiber, matrix, and stacking sequence that suits best, slaps them all together and finds G12 using a 10 degree tensile test. What to do with it all, how to make sense of the confusion? Solve a 6x6 matrix, its enough to give the brain a contusion, So many properties, so much to find, He begins to ask himself, "Will this composite ever be worth my time?" But then uses the best composite program of them all, PROMAL to find the global stresses and strains, but that's not all He sees strength ratios, midplane strains, and midplane curvatures galore, For anyone else, all this would surely be a complicated bore. But for this engineer, his interest was found, By someone who's mind with Newton-Raphson, Euler, and Runge-Kutta abound, Were it not for this someone to guide the way the journey would have been bleak, But now its safe to say that he is a composites freak!   Ubiquitous Composites Christian Martinez Composite Materials are very complex If you don't study hard you won't pass the test Macromechanics of a Laminate is not magic If you study hard you'll see the logic. Bring a TI-89 to class? Not to this class okay Go and buy a TI-30XA Go and put it in your cart, at the best place to start…………………Wal-Mart. Lamina Laminate they sound a-like but they're not the same One of them is made up of the other If you can't figure it out, don't be bothered Class number EML6232 will show you. Composite Materials are everywhere Look around and you'll see them there There at NASA, even there at your home Even inside your body, namely your bones.   Precious Gift Sri Harsha Garapati Composite is a precious gift given by God It's only for some lucky people But for those only who knew mechanics of composite materials. Its hell to analyze it But PROMAL is like heaven Sent from above as God's grace to engineers. When you think to design a aero structure It is all you think about Coz it's a combination of sugar, spice and every thing nice. Among materials it is a LEO And can charm you with his properties like strength and reliability It gave the hope for the Dreamliner and the space shuttle This is why designers take it as a adorable material.   The Composites Review Kevin Holmes Composites are made of a matrix and fiber, They're used in place of other materials to make products lighter. Early examples were made of clay and straw, Too learn more about them, I took a class with Dr. Kaw. We've gone through chapters 1, 2, 3, 4, and 5, And I've been "cutting the potato" to stay alive. We're now onto laminate failure, analysis, and design, All the easy stuff is out of sight, but not out of mind. The class is intense but I'm learning a lot, I can solve any problem right on the spot. Stresses, strains, failure theories, and 6-by-6 matrices, With my TI-30Xa, I can solve them with ease. Well, it's ten ‘til two so I better head to class, I've got to pay attention and take notes to pass. It's a little intimidating being in class with graduate folk, But, my spirits should be lifted when I hear Dr. Kaw's latest joke.   Composite Materials Class Song Chris Jones Dr. Kaw is the best professor of all, I'm taking composites with him in the fall. My name is C. Jones and I sit in the back row, Ask me about composites, I'll tell you all you need to know. Local to global, stress to strain, Write it all on paper even though it's a pain. Do your homework and ace your tests, To pass this class you have to be the best. Sixty degree angle ply problem, Yea it looks hard but I learned how to solve them. I am crunching numbers on my TI-30X, Spent so much time cutting potatoes, my girlfriend is now my ex. Composite materials are the way to go, Forget steel and aluminum, they are just for show. That's all for now, I'm done for today, The next shuttle design is on its way!   The Composite Potato Matt Kunze Sittin in the library T-pain rock'n my headphones Its late, I haven't eaten, I just want to go home My book is open to page 310 I hope I never see a problem like this again Lamina are hard gotta find the local stress and strain Solving matrix algebra with my TI 30-XA There's just way to much to calculate Gotta do well, heaven knows I want to graduate Chorus I'm cutting the composite potato Studying all through the night Symmetric Lamina Out of plane loads I gotta get these answers right I'd rather just mash the potato Cause those taste much better to me I swear that I've never Had to study so hard Just to earn a C So I'm cutting the composite potato The Q bar matrix makes me want to throw the book off a bridge Dr. Kaw's a good teacher and my jokes aren't as good as his So I'm stuck here in this cellar till they tell me that I have to go I just finished chapter 4 but there's so much more I have to know Chorus I'm cutting the composite potato Studying all through the night Symmetric Lamina Out of plane loads I gotta get these answers right I'd rather just mash the potato Cause those taste much better to me I swear that I've never Had to study so hard Just to earn a C So I'm cutting the composite potato The Promal software Is a great calculator But I don't get the right answer Until 3 questions later I'm cutting the composite potato Studying all through the night Symmetric Lamina Out of plane loads I gotta get these answers right I'd rather just mash the potato Cause those taste much better to me I swear that I've never Had to study so hard Just to earn a C So I'm cutting the composite potato   The Plight of the Fiber Kevin Adcox This is a song about the emotions and hardships fibers face everyday. Some engineers claim they are just too difficult to work with, and not worth the extra trouble. I wrote this song to enlighten and make people aware of the other side of the story. Imagine there's a struggle It's harder than the norm Each equation used You'll have to transform Imagine how tedious Solving these all day Imagine two Poisson's ratios I doubt that you can A shear coupling term No one can understand Imagine how tedious A six by six matrix You see, I'm a weave here But I'm not the only one There's a matrix that joins us As a laminate, we are one Imagine there's no person Willing to give you a try Not even Dan Rather Wants to see you fly Imagine how tedious Dealing with my moduli You see, I'm a weave here But I'm not the only one There's a matrix that joins us As a laminate, we bond as one