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Different ultrasonic modes work best for different materials and configurations using the right one will locate more flaws with higher precision, according to the researchers. The selection process could save time and effort for engineers who perform maintenance on complex structures made from composite materials -- like airplanes.
Adhesive bonds are better for attaching composite parts than nuts and bolts, which pierce and weaken structural integrity. But heavy operation can crack the glue, damaging the bond's effectiveness. Ultrasonic waves let engineers examine bonded regions without having to dismantle anything.
"This technique is very widely used in aerospace engineering because those structures require a very high reliability," said Baiyang Ren, postgraduate in engineering science and mechanics. "When something like an airplane or helicopter, bridge, ship has some component that fails suddenly, that could cause a severe accident."
Held at the Michigan International Speedway, the FSAE competition hosted 120 teams from across the globe that were judged on a variety of factors, including production cost, fuel economy, and a grueling endurance race. Penn State’s team was one of 19 competitors with a winged aero-package. This design included composite carbon-fiber front and rear wings and side pods and the car ranked competitively in many categories.
During a recent visit to campus, Congressman Glenn Thompson toured the College of Engineering’s Learning Factory, where the FSAE car is housed. ESM senior and FSAE team member Shawn Liang presented the car to Representative Thompson and described the students’ hands-on learning experience readying the car for competition.
ESM Graduation Ceremony
Friday, May 3, 2013; 1pm–3pm
Grand Ballroom, Ramada Conference Center
1650 South Atherton Street
State College, PA 16801
(814) 238-3001
Please RSVP at this website or contact Melissa Fink at mff3@psu.edu or (814) 865-4523 with the number of guests in your party. Refreshments will be served after the ceremony. Families are welcome to visit the Department. See this website for driving directions.
Students should arrive at the Grand Ballroom Foyer, Ramada Conference Center, no later than 12:40 p.m. The ceremony will start promptly at 1:00 p.m.
Friday, May 3, 2013; 1pm–3pm
Grand Ballroom, Ramada Conference Center
1650 South Atherton Street
State College, PA 16801
(814) 238-3001
Please RSVP at this website or contact Melissa Fink at mff3@psu.edu or (814) 865-4523 with the number of guests in your party. Refreshments will be served after the ceremony. Families are welcome to visit the Department. See this website for driving directions.
Students should arrive at the Grand Ballroom Foyer, Ramada Conference Center, no later than 12:40 p.m. The ceremony will start promptly at 1:00 p.m.
E MCH 212 Dynamics will be offered online by Professor Gary Gray in the Summer of 2013.
E MCH 212 is an introductory course in dynamics, which is the science of motion. In this course we will develop the ability to analyze engineering problems concerning the motion of objects and the system of forces acting on them. The solution of these problems requires the use of very few basic principles. We will develop and/or improve our engineering problem solving skills (think before beginning the solution, ask what principles apply, and critically judge our results), our visualization skills (e.g., free body diagrams), and our understanding of basic physical principles of dynamics.
For more information, please visit http://www.engr.psu.edu/cde/courses/emch212/
Non Penn State students (non-degree students) should contact Deb Zimmerman at dlz1@psu.edu or 814-865-7643 to register.
For more information, please visit http://www.engr.psu.edu/cde/courses/emch212/
Non Penn State students (non-degree students) should contact Deb Zimmerman at dlz1@psu.edu or 814-865-7643 to register.
SATURDAY, APRIL 20
ESM ALUM RECONNECT AND CELEBRATE
FRIENDS • FOOD • FOOTBALL
Tailgate
10:00 am – 11:30 am , Stadium, on the corner of Park Avenue and Porter Road (see tailgate map for details)
Game Time
12:00 pm kickoff, Beaver Stadium, no tickets required
To learn more, visit http://www.esm.psu.edu/alumni/tailgate. RSVP by April 17, 2013. Timely responses are greatly appreciated. To register, contact Jason M. Lyons (814) 867 - 1569 OR JML43@PSU.EDU.
ESM ALUM RECONNECT AND CELEBRATE
FRIENDS • FOOD • FOOTBALL
Tailgate
10:00 am – 11:30 am , Stadium, on the corner of Park Avenue and Porter Road (see tailgate map for details)
Game Time
12:00 pm kickoff, Beaver Stadium, no tickets required
To learn more, visit http://www.esm.psu.edu/alumni/tailgate. RSVP by April 17, 2013. Timely responses are greatly appreciated. To register, contact Jason M. Lyons (814) 867 - 1569 OR JML43@PSU.EDU.
Dear Alumni and Friends,
The department of Engineering Science and Mechanics wishes you and your families a very happy holiday season and New Year. We thank you for all your contributions and support to the department and look forward to continuing our work together in 2013!
Also, please check out our fall 2012 newsletter online at our alumni homepage; a copy will be delivered to your address soon.
Happy Holidays!
Judy Todd, P.B. Breneman Chair and Department Head
Jason Lyons, Coordinator for Alumni and Development
ESM Faculty and Staff
The department of Engineering Science and Mechanics wishes you and your families a very happy holiday season and New Year. We thank you for all your contributions and support to the department and look forward to continuing our work together in 2013!
Also, please check out our fall 2012 newsletter online at our alumni homepage; a copy will be delivered to your address soon.
Happy Holidays!
Judy Todd, P.B. Breneman Chair and Department Head
Jason Lyons, Coordinator for Alumni and Development
ESM Faculty and Staff
Mirna Zamrik, wife of Professor Emeritus Sam Zamrik in Engineering Science and Mechanics, was honored as at the American Society of Mechanical Engineers (ASME) Auxiliary Board meeting in November by receiving the ASME dedicated service award. ESM Congratulates Mirna Zamrik for her accomplishments!
Penn State will receive $4.2 million over the next three years from the National Science Foundation to continue the work of the Nanotechnology Applications and Career Knowledge Network (NACK Network), founded at the Unviersity with a four-year grant from the NSF in 2008. The NACK network provides national coordination of workforce development programs and activities on behalf of NSF in an effort to meet industry needs for skilled micro- and nanofabrication workers. To learn more, please visit Penn State Live.
*Source: Penn State Live
*Source: Penn State Live
Penn State, North Carolina State University, the University of Virginia and Florida International University will collaborate on a national nanotechnology research effort to create self-powered devices to help people monitor their health and understand how the surrounding environment affects it, the National Science Foundation (NSF) announced Sept. 6.
The NSF Nanosystems Engineering Research Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies (ASSIST), to be headquartered on NC State's Centennial Campus, also includes five affiliated universities and about 30 industry partners in its global research consortium. ASSIST will be funded by an initial five-year $18.5 million grant from the NSF.
ASSIST researchers will use nanomaterials and nanostructures — a nanowire is thousands of times thinner than a human hair — to develop self-powered health monitoring sensors and devices that operate on small amounts of energy. ASSIST researchers will make devices from thermoelectric and piezoelectric materials that use body heat and motion, respectively, as power sources.
"The ASSIST program offers an opportunity to utilize core Penn State strengths in materials, nanofabrication, low power circuits and biobehavioral health to advance human health. This is an extremely exciting opportunity for the researchers involved," said Susan Trolier-McKinstry, Penn State professor of materials science and engineering.
"Currently there are many devices out there that monitor health in different ways," said Veena Misra, the center's director and professor of electrical and computer engineering at NC State. "What's unique about our technologies is the fact that they are powered by the human body, so they don't require battery charging."
These devices could transform health care by improving the way doctors, patients and researchers gather and interpret important health data. Armed with uninterrupted streams of heart rate readings, respiration rates and other health indicators, sick people could better manage chronic diseases, the elderly could be monitored from a distance and healthy people could make better decisions to keep themselves fit.
For example, personalized exposure data for environmental pollutants such as ozone and carbon monoxide could help a child suffering from asthma avoid an environmental trigger for an attack. Miniaturized devices the size of a pen or wristwatch will make compliance simpler and therefore more likely, resulting in better health outcomes and reduced health costs to society.
The NSF Nanosystems Engineering Research Center for Advanced Self-Powered Systems of Integrated Sensors and Technologies (ASSIST), to be headquartered on NC State's Centennial Campus, also includes five affiliated universities and about 30 industry partners in its global research consortium. ASSIST will be funded by an initial five-year $18.5 million grant from the NSF.
ASSIST researchers will use nanomaterials and nanostructures — a nanowire is thousands of times thinner than a human hair — to develop self-powered health monitoring sensors and devices that operate on small amounts of energy. ASSIST researchers will make devices from thermoelectric and piezoelectric materials that use body heat and motion, respectively, as power sources.
"The ASSIST program offers an opportunity to utilize core Penn State strengths in materials, nanofabrication, low power circuits and biobehavioral health to advance human health. This is an extremely exciting opportunity for the researchers involved," said Susan Trolier-McKinstry, Penn State professor of materials science and engineering.
"Currently there are many devices out there that monitor health in different ways," said Veena Misra, the center's director and professor of electrical and computer engineering at NC State. "What's unique about our technologies is the fact that they are powered by the human body, so they don't require battery charging."
These devices could transform health care by improving the way doctors, patients and researchers gather and interpret important health data. Armed with uninterrupted streams of heart rate readings, respiration rates and other health indicators, sick people could better manage chronic diseases, the elderly could be monitored from a distance and healthy people could make better decisions to keep themselves fit.
For example, personalized exposure data for environmental pollutants such as ozone and carbon monoxide could help a child suffering from asthma avoid an environmental trigger for an attack. Miniaturized devices the size of a pen or wristwatch will make compliance simpler and therefore more likely, resulting in better health outcomes and reduced health costs to society.
In a cover article in The Journal of Applied Physics, a team of Penn State researchers has designed and computationally tested a type of manmade metamaterial capable for the first time of manipulating a variety of acoustic waves with one simple device.
This invention will benefit almost all current sonic and ultrasonic applications, such as ultrasonic nondestructive evaluations and ultrasonic imaging. The device should also provide more accurate and efficient high-intensity focused ultrasound (HIFU) therapies, a noninvasive heat-based technique targeted at a variety of cancers and neurological disorders.
Optical metamaterials have been widely studied in the past decade for applications such as cloaking and perfect lenses. The basic principles of optical metamaterials apply to acoustic metamaterials. Artificial structures are created in patterns that bend the acoustic wave onto a single point, and then refocus the acoustic wave into a wider or narrower beam, depending on the direction of travel through the proposed acoustic beam aperture modifier. The acoustic beam aperture modifier is built upon gradient-index phononic crystals, in this case an array of steel pins embedded in epoxy in a particular pattern. The obstacles (steel pins) slow down the acoustic wave speed in order to bend the acoustic waves into curved rays.
According the paper's lead author, Sz-Chin Steven Lin, a post-doctoral scholar in engineering science and mechanics, while other types of acoustic metamaterials also could focus and defocus an acoustic beam to achieve beam aperture modification (although prior to this work no such beam modifier has been proposed), their device possesses the advantage of small size and high energy conservation. Currently, researchers and surgeons need to have many transducers of different sizes to produce acoustic waves with different apertures. This is analogous to having to swap out lenses on a camera to change the lens’s aperture. With this invention, by changing the modifier attached to the transducer the desired aperture can be easily attained.
"Design of acoustic beam aperture modifier using gradient-index phononic crystals," by Lin; Bernhard Tittmann, Schell professor and professor of engineering science and mechanics; and Tony Jun Huang, associate professor of engineering science and mechanics; is the first design concept for an acoustic beam aperture modifier to appear in the scientific literature, and no acoustic beam modifier device is available in the market. As a result, the authors expect their device could have wide applications across several important acoustic fields, from medical ultrasound to higher sensitivity surface acoustic wave sensors to higher Q factor resonators. The team is currently making a prototype based on this design.
*Source: Walt Mills, Penn State Live
This invention will benefit almost all current sonic and ultrasonic applications, such as ultrasonic nondestructive evaluations and ultrasonic imaging. The device should also provide more accurate and efficient high-intensity focused ultrasound (HIFU) therapies, a noninvasive heat-based technique targeted at a variety of cancers and neurological disorders.
Optical metamaterials have been widely studied in the past decade for applications such as cloaking and perfect lenses. The basic principles of optical metamaterials apply to acoustic metamaterials. Artificial structures are created in patterns that bend the acoustic wave onto a single point, and then refocus the acoustic wave into a wider or narrower beam, depending on the direction of travel through the proposed acoustic beam aperture modifier. The acoustic beam aperture modifier is built upon gradient-index phononic crystals, in this case an array of steel pins embedded in epoxy in a particular pattern. The obstacles (steel pins) slow down the acoustic wave speed in order to bend the acoustic waves into curved rays.
According the paper's lead author, Sz-Chin Steven Lin, a post-doctoral scholar in engineering science and mechanics, while other types of acoustic metamaterials also could focus and defocus an acoustic beam to achieve beam aperture modification (although prior to this work no such beam modifier has been proposed), their device possesses the advantage of small size and high energy conservation. Currently, researchers and surgeons need to have many transducers of different sizes to produce acoustic waves with different apertures. This is analogous to having to swap out lenses on a camera to change the lens’s aperture. With this invention, by changing the modifier attached to the transducer the desired aperture can be easily attained.
"Design of acoustic beam aperture modifier using gradient-index phononic crystals," by Lin; Bernhard Tittmann, Schell professor and professor of engineering science and mechanics; and Tony Jun Huang, associate professor of engineering science and mechanics; is the first design concept for an acoustic beam aperture modifier to appear in the scientific literature, and no acoustic beam modifier device is available in the market. As a result, the authors expect their device could have wide applications across several important acoustic fields, from medical ultrasound to higher sensitivity surface acoustic wave sensors to higher Q factor resonators. The team is currently making a prototype based on this design.
*Source: Walt Mills, Penn State Live