This time we have the middle school students coming to our lab, help us to sketch the geometry of their design on solidwork
Top five things keeping me going before spring break!
#1 My mum’s cooking!
#2 A shower and bedroom all to myself!
#3 A break from tests
#4 Free Time!!!!
#5 To be able to come back and see my friends again after break is over!
“I believe I can fly”, this quote makes many people think of the popular 90′s song by artist R.Kelly. But here at Lehigh, this quote is not only a song lyric but also a reality because I REALLY believe that I can fly…. as a private pilot! In the spring, Lehigh offers a course called General Aviation Technology and Operations (ME 195). This class is taught by former NASA astronaut Terry Hart. The purpose of the course is to help you get the general knowledge you need to pass the ground school knowledge exam that is offered by the Federal Aviation Administration (FAA). So by the end of this semester I will be able to pass the ground knowledge exam and begin receive practical air lessons since I am certified. Ground school usually costs around $3,000 at a flight school or an airport but Lehigh tuition covers the cost of this class so there are no additional costs. I took this course last spring and already received my FAA ground school certification. Also, since I am staying this summer at Lehigh, to take some summer courses because of the Co-op program, I will be receiving practical experience that adds up to 40 operation flight hours so that I can receive my private pilots license.
So I guess that you do not always have to go to flight school or reminisce R.Kelly’s song to believe that you can fly because here at Lehigh, students can make that belief into a REALITY!
I figured in that I just did a post on ME21 (Mechanical Engineering Laboratory I), I should do a post explaining what ME21 is like.
Now from the last post some of you might be thinking, how is crushing cans related to Mechanical Engineering. Well the thing is it is not necessarily related to Mechanical Engineering but the thing is that in this class we learn many key concepts that will help us in our future careers as Mechanical Engineers. We then do labs that are not necessarily what we will be doing in our future, but we are practicing the concepts.
One of the key concepts that we have learned thus far is how to take data using a transducer. Just in case you did not read my previous post, a transducer is a device that takes in physical data, such as displacement or force, and converts it into a electrical signal. A transducer is a very key element in data acquisition because it takes data way faster than a human can, which allows us to be more accurate in our analysis of that data.
Another key concept that we are currently learning is how to use a program called LabVIEW. This is a program that is widely used in industry for data acquisition, as well as other things. It is widely used because of its simple interface. All you do is connect lines between what you want the data to input, how the data is to be analyzed and then to the output (I am simplifying it a little bit because it does take thought as to how the data should be modified but the idea behind it is simple).
We have learned many other things in this class but those are some of the key points thus far.
#LehighUniversity #LehighUniversityEngineering #LehighUniversityMechanicalEngineering #MechanicalEngineering #ME21
Last week in ME21 (Mechanical Engineering Laboratory I) we did an experiment that involved crushing cans. What we did was we placed the can in the machine testing rig and then we pushed the down button on the machine which puts the can under compression. We continued crushing the can until it had compressed a specified displacement.
Now when a structure, in this case the can, undergoes compressive stress it experiences buckling. This is when the can gives way and starts to compress. That is the cracking sounds in the can that you hear in the video below.
We did not just do this experiment for fun, all though we did enjoy it, we did it to determine the amount of work required to crush the cans and also to determine the force required to initiate buckling.
The data was collected using a force transducer. A transducer takes in a physical value, force in this case, and then converts it to a electrical output that can be used to represent the data.
I took a video of one of the cans that we crushed. It is on the Lehigh Engineering youtube account and the web address is: https://www.youtube.com/watch?v=7N5IzlMMRKc
Sorry for the people talking in the background.
#crushingcans #ME21 #LehighUniversity #Lehigh #LehighUniversityEngineering #LehighUniversityMechanicalEngineering
“While Ivy League Professors break tensile specimens
Lehigh Professors break world records.”
This is the quote and poster that is pasted on the door of Dr. Grenestedt’s office as breaking world records is a enormous accomplishment for anyone to achieve.
The enclosed streamlined motorcycle, or streamliner, that Joachim Grenestedt built looks like a miniature airplane with no wings. Its tiny cockpit seems far too small to fit a person of average size, much less Grenestedt—who stands 6 feet, 4 inches tall. Grenestedt built the streamliner to set a land speed record, but the contorted position he must assume inside the cockpit hardly permits him to drive, let alone race. He must lie almost flat on his back, and safety restraints are strapped so tightly against his body, arms, ankles, knees and thighs, that he can barely move his left foot to change gears.
Add to this the streamliner’s low center of gravity, which makes the machine difficult to balance and wobbly at low speeds. And steering is a bit counterintuitive: to go left, Grenestedt must steer right, causing the streamliner to lean, and then steer left. None of this kept Grenestedt, a professor of mechanical engineering and mechanics, here at Lehigh
Dr. Grenestedt navigated his streamliner across the snow-white, marvelously even surface of the Bonneville Salt Flats in Utah at a speed of 133.165 miles per hour. He shattered the previous U.S. land speed record of 125.594 mph for 125-cc engines running on gasoline.
Here is some of Dr. Grenestedt’s Background according to the school website.
Joachim Grenestedt is professor of mechanical engineering and director of Lehigh’s Composites Lab. His expertise is in designing, manufacturing and operating advanced vehicles. Present research focuses on:
- high-speed boats, slamming testing, new structural concepts (steel-composite hybrids), and new vehicle concepts for drastically improved ride (Suspension boats),
- unmanned aircraft for high altitude dynamic soaring,
- unmanned boats for characterizing waves, as well as for harbor patrol and riverine operations,
- unmanned aircraft that can be launched from a cannon.
Since joining Lehigh’s faculty in 2000 he has used composites in the development of innovative designs, from ship hulls to skis to record-breaking streamliners.
As you can see, Dr. Grenestedt is a very accomplished individual. Even though he emphasizes a significant amount on research, he also teaches some very interesting courses like Fundamentals of Aircraft Design which is a course necessary for the Aerospace Minor.
I personally have never had him but have heard many things about him and I cant wait until next year when I am a junior and I am able to learn from this man. Again, not everyone has the opportunity to learn from someone who breaks world records; so why not take this opportunity?
Meet Kaitlin Slattery! A senior MechE here at Lehigh. If there’s something Kaitlin intends to do, there is little way of stopping her. As former president of her sorority and current PanHellenic president she always has a lot on her plate, but never seems flustered.
Favorite color: Purple
Favorite food: Pizza!
Favorite class at Lehigh: Math 322 because Salathe is awesome
Least favorite class and why: Dynamics probably..
Favorite teacher so far: Webb
Dream Job: I’ve accepted a job with Con Edison for the GOLD program which I’ll be starting in June, so I’m pretty psyched about that. My dream job though would probably be to go into energy policy… we need more engineers in politics!
Campus Activities: These four years I’ve been very involved in Greek life. I served as Alpha Phi President in 2012, and am currently serving as the Panhellenic Council President at Lehigh. Through this I’ve had many opportunities to work with other groups on campus and to volunteer in Bethlehem.
Past Internships: The summer going into my sophomore year I interned at Regeneron Pharmaceuticals as a Technical Operations Intern. This past summer I worked at GE Transportation as a Locomotive Systems Engineer Intern.
How you spend your free time: When I’m not in Fairmart you can probably find me hanging out with my friends.
Favorite Memory at Lehigh: This is a tough one… Probably St. Patrick’s day weekend of my sophomore year, the same weekend when Lehigh beat Duke. Saturday we celebrated St. Patty’s day properly, and then Sunday morning I road tripped to North Carolina with a bunch of Alpha Phi girls to watch Lehigh play the second game. We were treated like celebrities in North Carolina by all the UNC fans, it was awesome!
Advice for freshmen or perspective students: Don’t cut class, it’s a bad habit, and try not to abuse cramster when it comes to doing your homework. Make sure you get involved on campus and take a leadership role! Being President of my sorority and President of the Panhellenic Council has taught me invaluable skills that I would never have been able to learn in my classes.