You have entered an incorrect email address! Please enter your email address here Editor’s Note: This is the eighth in a series of articles published by The Apopka Voice in 2016 that were the most noteworthy events of the year. The Apopka Voice will publish them starting today and running until Friday, December 30th. During the New Year’s weekend (Friday, December 30th – Sunday, January 1st) we will publish a poll and let the readers decide on which story is the most impactful of the year. Originally Published: June 15th, 2016The Apopka City Council voted 5-0 last night to approve Chuck Carnesale as Apopka’s new fire chief. He takes over a department of more than 80 firefighters.“He started as an Explorer at age 13, graduated high school, Fire Academy and EMT school simultaneously in 1989, and was a dispatcher at age 17,” said Mayor Joe Kilsheimer. ” he has filled almost every position at The Apopka Fire department.”“I hate to mention I’ve been on this journey for 33 years when my mother dropped me off to look at fire trucks,” said Carnesale. “Thank you. I won’t let you down. I won’t let the public down. I won’t let the firefighters down.”Carnesale has served as assistant fire chief since 2013, heading up the fire department’s emergency medical and ambulance services. He is certified as a firefighter, EMT/paramedic, fire officer, fire inspector and instructor in various fields. In 1990, Carnesale was hired as a full-time firefighter/EMT. In 2000 he was recognized by then Gov. Jeb Bush as Apopka’s Firefighter of the Year.Chuck CarnesaleHe was promoted to engineer in 2001, lieutenant in 2005, captain and EMS coordinator in 2006 and assistant fire chief in 2013. Carnesale attended Seminole State and Valencia colleges, Florida State Fire College and the National Fire Academy in Emmitsburg, MD.He has served on several medical boards, and this year Orange County Medical Director Dr. George Ralls appointed him to the Orange County EMS Advisory Council.The City Council was pleased with Kilsheimer’s choice.“Chuck is an amazing person,” said Commissioner Kyle Becker. I know he is going to do a fantastic job. I couldn’t be more happy for you (Carnesale).”“I’m glad we brought someone in from our own fire department,” said Commissioner Billie Dean. “We have the best fire department in America. We should hire from within. I commend you (Kilsheimer) on the choice.”Carnesale replaces former Fire Chief Lee Bronson. TAGSApopka Fire DepartmentChuck CarnesaleFire Chief Previous articleBiggest Apopka stories of 2016: Warrant issued for Richard Anderson’s arrestNext article5 Ways to Beat Mindless Eating Denise Connell RELATED ARTICLESMORE FROM AUTHOR LEAVE A REPLY Cancel reply Florida gas prices jump 12 cents; most expensive since 2014 UF/IFAS in Apopka will temporarily house District staff; saves almost $400,000 Please enter your name here Please enter your comment! Share on Facebook Tweet on Twitter Gov. DeSantis says new moment-of-silence law in public schools protects religious freedom Save my name, email, and website in this browser for the next time I comment.
Share4Editor’s note: Links to a video and images for download appear at the end of this release.David [email protected] [email protected] hits confirm graphene’s strengthRice University lab test material for suitability in body armor, spacecraft protection HOUSTON – (Dec. 1, 2014) – Graphene’s great strength appears to be determined by how well it stretches before it breaks, according to Rice University scientists who tested the material’s properties by peppering it with microbullets.The two-dimensional carbon honeycomb discovered a decade ago is thought to be much stronger than steel. But the Rice lab of materials scientist Edwin “Ned” Thomas didn’t need even close to a pound of graphene to prove the material is on average 10 times better than steel at dissipating kinetic energy.The researchers report in the latest edition of Science that firing microscopic projectiles at multilayer sheets of graphene allowed the scientists to determine just how hard it is to penetrate at the nano level – and how strong graphene could be in macroscopic applications.Thomas suggested the technique he and his research group developed could help measure the strength of a wide range of materials.While other labs have looked extensively at graphene’s electronic properties and tensile strength, nobody had taken comprehensive measurements of its ability to absorb an impact, Thomas said. His lab found graphene’s ability to simultaneously be stiff, strong and elastic gives it extraordinary potential for use as body armor or for shielding spacecraft.The lab pioneered its laser-induced projectile impact test (LIPIT), which uses the energy from a laser to drive microbullets away from the opposite side of an absorbing gold surface at great speed. In 2012, they first used an earlier version of LIPIT to determine the properties of multiblock copolymers that could not only stop microbullets but also completely encase them.Since that study, Thomas and lead author Jae-Hwang Lee, a former research scientist at Rice and now an assistant professor at the University of Massachusetts at Amherst, have enhanced their technique to fire single microscopic spheres with great precision at speeds approaching 3 kilometers per second, much faster than a speeding bullet from an AK-47.The researchers built a custom stage to line up multilayer graphene sheets mechanically drawn from bulk graphite. They tested sheets ranging from 10 to 100 nanometers thick (up to 300 graphene layers). They then used a high-speed camera to capture images of the projectiles before and after hits to judge their speed and viewed microscope images of the damage to the sheets.In every case, the 3.7-micron spheres punctured the graphene. But rather than a neat hole, the spheres left a fractured pattern of “petals” around the point of impact, indicating the graphene stretched before breaking.“We started writing the paper about the petals, but as we went along, it became evident that wasn’t really the story,” said Thomas, the William and Stephanie Sick Dean of Rice’s George R. Brown School of Engineering. “The bullet’s kinetic energy interacts with the graphene, pushes forward, stretches the film and is slowed down.”The experiments revealed graphene to be a stretchy membrane that, in about 3 nanoseconds before puncture, distributes the stress of the bullet over a wide area defined by a shallow cone centered at the point of impact. Tensile stress cannot travel faster than the speed of sound in materials, and in graphene, it’s much faster than the speed of sound in air (1,125 feet per second).“For graphene, we calculated the speed at 22.2 kilometers per second, which is higher than any other known material,” Thomas said.As a microbullet impacts the graphene, the diameter of the cone it creates – determined by later examination of the petals – provides a way to measure how much energy the graphene absorbs before breaking.“The game in protection is getting the stress to distribute over a large area,” Thomas said. “It’s a race. If the cone can move out at an appreciable velocity compared with the velocity of the projectile, the stress isn’t localized beneath the projectile.”Controlled layering of graphene sheets could lead to lightweight, energy-absorbing materials. “Ideally you would have a lot of independent layers that aren’t too far apart or so close that they’re touching, because the loading goes from tensile to compressive,” Thomas said. That, he said, would defeat the purpose of spreading the strain away from the point of impact.He expects LIPIT will be used to test many experimental materials. “Before you scale a project up, you’ve got to know what will work,” he said. “LIPIT lets us develop rapid methodologies to test nanoscale materials and find promising candidates. We’re working to demonstrate to NASA and the military that these microscopic tests are relevant to macroscopic properties.”The paper’s co-authors are Rice graduate student Phillip Loya and Jun Lou, an associate professor of materials science and nanoengineering. The Defense Threat Reduction Agency and the Welch Foundation supported the research.-30-Ned Thomas shows how firing microbullets at graphene quantify its strength in this video: http://youtu.be/Sevm_DHu05oRead the abstract at http://www.sciencemag.org/content/346/6213/1092.shortThis news release can be found online at http://news.rice.edu/2014/12/01/microbullet-hits-confirm-graphenes-strength/Follow Rice News and Media Relations via Twitter @RiceUNewsRelated Materials:Thomas Research Group: http://msne.rice.edu/nedthomas/Lee Nano-engineering Laboratory: https://blogs.umass.edu/leejh/Rice Department of Materials Science and NanoEngineering: http://msne.rice.eduImages for download: http://news.rice.edu/files/2014/11/1208_GRAPHENE-3-web.jpgMaterials scientist Edwin “Ned” Thomas, left, dean of the George R. Brown School of Engineering at Rice University, and Jae-Hwang Lee, a former research scientist in his lab and now an assistant professor at the University of Massachusetts, Amherst, found graphene is stronger than steel in tests with microbullets. The researchers hold a polymer encasing bullets, the focus of a previous experiment. (Credit: Tommy LaVergne/Rice University) http://news.rice.edu/files/2014/11/1208_GRAPHENE-6-web.jpgA photo illustration shows the petal pattern left by a microbullet (inserted for size comparison) fired at graphene in an experiment at Rice University. The research demonstrated graphene is 10 times better than steel at absorbing the energy of a penetrating projectile. (Credit: Photo illustration by Jae-Hwang Lee/Rice University) http://news.rice.edu/files/2014/11/1208_GRAPHENE-5-web.jpgA graphic shows how a microbullet traveling at supersonic speed bursts through a sheet of multilayer graphene, but not before the graphene absorbs much of the energy of the impact. Measurements taken at Rice University show that graphene is 10 times better than steel at absorbing the energy of a penetrating projectile. (Credit: Thomas Research Group/Rice University) http://news.rice.edu/files/2014/11/1208_GRAPHENE-1-web.jpgRice University scientists fired microbullets at supersonic speeds in experiments that show graphene is 10 times better than steel at absorbing the energy of a penetrating projectile. (Credit: Jae-Hwang Lee/Rice University) FacebookTwitterPrintEmailAddThis http://news.rice.edu/files/2014/11/1208_GRAPHENE-2-web.jpgA microbullet traveling at supersonic speed is captured in this composite of three timed images as it makes its way toward a suspended sheet of multilayer graphene. Experiments carried out at Rice University show graphene is 10 times better than steel at absorbing the energy of a penetrating projectile. The bubble at left is a polymer film expanding away from the gold substrate that transfers energy from a laser to the microbullet. (Credit: Thomas Research Group/Rice University) Located on a 300-acre forested campus in Houston, Rice University is consistently ranked among the nation’s top 20 universities by U.S. News & World Report. Rice has highly respected schools of Architecture, Business, Continuing Studies, Engineering, Humanities, Music, Natural Sciences and Social Sciences and is home to the Baker Institute for Public Policy. With 3,920 undergraduates and 2,567 graduate students, Rice’s undergraduate student-to-faculty ratio is just over 6-to-1. Its residential college system builds close-knit communities and lifelong friendships, just one reason why Rice is highly ranked for best quality of life by the Princeton Review and for best value among private universities by Kiplinger’s Personal Finance. To read “What they’re saying about Rice,” go here. http://news.rice.edu/files/2014/11/1208_GRAPHENE-4-web.jpgA graphic shows how a microbullet traveling at supersonic speed bursts through a sheet of multilayer graphene, but not before the graphene absorbs much of the energy of the impact. Measurements taken at Rice University show that graphene is 10 times better than steel at absorbing the energy of a penetrating projectile. (Credit: Thomas Research Group/Rice University)