Hugh Herr, founder of BiOM, Bedford, MA, turned his love of mathematics and his experience as an amputee into a way to improve the lives of others. Working on human bionics, he saw creating a bionic ankle as one of the most vital body parts he could focus on. “The ankle joint is crit ical for bipedalism. It’s arguably the most important joint in working high exertion,” he says. “It’s critical for reducing shock for impact and to walk with low energies. What we did in creating this is build theoretical mathematical models and walk them through Newton’s laws of mechanics. All the dominant biophysical elements are represented in the model. It combines with external data suggesting how the ankle stiffens and provides torques and powers which worked with bionics both structurally and in terms of biorhythm.” Elastic Meets Metal When building a foot-ankle system, Herr’s team decided to have one active actuator to flex and extend the ankle joint—all joints of the foot and below the ankle are modeled with passive elastic structures. But it also limits it for the sake of recreating what we experience. “If you dorsal flex, the ankle can’t continually flex. There is a point where you can no longer reduce the angle between foot and your calf. For this reason, we also put in parallel elastic structures to represent that passive biological compliance.” The system is electric. “It’s a brushless motor. The transmission is a ball screw and the Achilles-like spring is a high-level storage composite spring,” he says. There is also titanium and aluminum that transfers the loads. “The ‘brains’ of the processors are the size of your fingernail and there are three of them,” he says. “There are also temperature sensitive monitors, adapting its control so it doesn’t get too hot and damage itself.” Improving the Technology Herr is happy to report that 1,000 have been sold to date, half of which have gone to wounded U.S. soldiers. “You see how people are affected by it,” he says. “They giggle uncontrollably or cry and say they have their life back. That’s why we do this.” But there is still more work to be done. “Let’s say you’re late for church and want to walk into a quiet room,” he says. “These electric-based machines make a lot of noise from the communication of motor and transmission. We want to get rid of the screeches.” There is also the limitation of who can use it. “We want to scale it and have everyone from a seven-year-old to a football player use it. Right now the range is between 150 pounds and 250 pounds,” he says. “It also needs a certain height because the bionic limb needs to fit in between the residual end and the floor. If someone is really short, there isn’t enough space.” Contents…… Making Strides with a Bionic Ankle Page-1 Staff Corner Page-2 Department Activities Page-3 Student Corner Page-3 Volume : 11 Jan – June 2014 Making Strides with a Bionic Ankle
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Hugh Herr, founder of BiOM, Bedford, MA, turned his love of mathematics and hisexperience as an amputee into a way to improve the lives of others. Working on humanbionics, he saw creating a bionic ankle as one of the most vital body parts he could focus on.“The ankle joint is crit ical forbipedalism. It’s arguably the mostimportant joint in working highexertion,” he says. “It’s critical forreducing shock for impact and towalk with low energies. What wedid in creating this is buildtheoretical mathematical modelsand walk them through Newton’slaws of mechanics. All thedominant biophysical elementsare represented in the model. Itcombines with external datasuggesting how the ankle stiffensand provides torques and powerswhich worked with bionics bothstructurally and in terms ofbiorhythm.”Elastic Meets MetalWhen building a foot-ankle system, Herr’s team decided to have one active actuator to flexand extend the ankle joint—all joints of the foot and below the ankle are modeled withpassive elastic structures.But it also limits it for the sake of recreating what we experience. “If you dorsal flex, the anklecan’t continually flex. There is a point where you can no longer reduce the angle betweenfoot and your calf. For this reason, we also put in parallel elastic structures to represent thatpassive biological compliance.”The system is electric. “It’s a brushless motor. The transmission is a ball screw and theAchilles-like spring is a high-level storage composite spring,” he says.There is also titanium and aluminum that transfers the loads.“The ‘brains’ of the processors are the size of your fingernail and there are three of them,” hesays. “There are also temperature sensitive monitors, adapting its control so it doesn’t gettoo hot and damage itself.”Improving the TechnologyHerr is happy to report that 1,000 have been sold to date, half of which have gone towounded U.S. soldiers. “You see how people are affected by it,” he says. “They giggleuncontrollably or cry and say they have their life back. That’s why we do this.”But there is still more work to be done. “Let’s say you’re late for church and want to walk intoa quiet room,” he says. “These electric-based machines make a lot of noise from thecommunication of motor and transmission. We want to get rid of the screeches.”There is also the limitation of who can use it.“We want to scale it and have everyone from a seven-year-old to a football player use it.Right now the range is between 150 pounds and 250 pounds,” he says. “It also needs acertain height because the bionic limb needs to fit in between the residual end and the floor.If someone is really short, there isn’t enough space.”
Research Papers Published in Journals :S. Radhika , Ch. Srinivasa Rao , K. Lakshmi Chaitanya , M. Vijaya , Asst . professors, “ Evolutionary Optimization inMPS : A Brief Review “ , Journal of Production Research and Management , (JoPRM 2014) Volume 4, Issue 1, pp 13-21. ISSN: 2249 – 4766.D.V.V. Krishna Prasad , Professor “Multi Objective Optimization of Turning Parameters Using Neural NetworkCoupled Genetic Algorithm” , Mechanica Confab ISSN: 2320-2491, Vol. 2, No. 7, December 2013- January 2014, PP 1-11Reddy Sreenivasulu, Asst . professor, “Multi Response Characteristics of Process Parameters during Endmilling of GFRP using GREY based Taguchi Method ” , Independent Journal of Management andProduction , ISSN: 2236-269X, Vol 5, n.2 pp 299 - 313,Feb - May 2014.V.Tara Chand, B. Ravi Sankar , Asst . professor, “Influence of Nano particle volume fraction, particle sizeand temperature on thermal conductivity and viscosity of nano fluids – a review”, International Journal ofAutomotive and Mechanical Engineering, Vol. 8 P.P. 1316-1338, July - Dcember 2013.V.Naga Bhushana Rao , IN Niranjan Kumar , K. Bala Prasad , Associate professor, “ Failure Analysis of gas turbineblades in a gas turbine engine used for marine applications” , International Journal of Engineering , Science andTechnology Vol 6. No 1 , 2014 pp:43-48V.Chittaranjan Das, Professor , C.Srinivas Assoc . professor, “Optimization of Multiple Response Characteristicson EDM Using the Taguchi Method and Grey Relational Analysis”, International Journal of Scientific Research andReviews, IJSRR 2013, 3(1), 25- 39, ISSN: 2279–0543Radhika.S Asst . professor, and Rao C. S. “A New Multi-Objective Optimization of Master Production SchedulingProblems Using Differential Evolution”, International Journal of Applied Science and Engineering, Vol.12, No.1 (2014),pp.75-86. ISSN 1727-2394.Radhika Sajja, Asst . professor, Srinivasa Rao Chalamalasetti, “A selective survey on multi-objective meta-heuristicmethods for optimization of master production scheduling using evolutionary approaches”, Int. J. Adv. Appl. Math.And Mech. Vol.1, No.3 (2014), pp 109 – 120, ISSN: 2347-2529.M. Anjali, C. Tara Sasanka, Ch. Deva Raj , Asst . professor,and K. Ravindra,Prof & HOD, “ Meta Heuristic Method forthe Design Optimization of a Wind Turbine Blade” published in International Journal of Current Engineering andTechnology, Special issue-3, April-2014, pp:175-179. ISSN : 2277-4106P. Sreenivasa rao , CHVS Parameswara Rao , K. Ravindra , Prof & HOD, “Experimental investigations on wireselection and parametric control for machining with wire EDM” , International Journal of Emerging Technologies andApplications, Vol 7 , Issue 1 , Jan – June 14 , PP: 78-82 ; ISSN : 0974-3588N. Santhi Sree , Dr. NVVS Sudheer , Assoc. Prof , Dr. P. Bhramara “ Enhancement of Heat Transfer by Nano Fluids inSolar Collectors” , International Journal of Innovations in Engineering and Technology , Vol 3. Issue 4 April 2014pp:115-120 . ISSN : 2319-1058N.V.V.S. Sudheer , Assoc. Prof K.V.J. Rao , “ Investigations on Influence of External Energy on Surface Roughness inturning of Aluminium Metal Matrix Composite ” , Journal of Association of Engineers , INDIA , Vol 83. No 3&4 ,2013 PP: 45-55.
Research Papers Published in Seminars/Conferences/Workshops(with ISBN no):Reddy Sreenivasulu, Asst. Prof , Valiveti Siva Ramakrishna, Ambati BabiReddy published a paper titled “Educatingthe Next Generation of Entrepreneurial Engineer in the development of Indian industry: Some Recommendations” inthe proceedings of International Conference on “Next Generation Education for Entrepreneurial Engineers”,(ICNGE3) organized by SR Engineering college (A) Warangal, A.P on 10 -11 March 2014. Pp: 24-27.
M G Krishna, K Praveen Kumar Asst. Prof, J Babu Rao, NRMR Bhargave, K Vijaya Kumar, “Deformation andSimulation Studies of Metal-Metal Composites’’, Proceedings of International Conference on Trends in Products LifeCycle, Modeling, Simulation and Synthesis (PLMSS-2014) organized by School of Mechanical and Building Sciences,VIT University, Vellore, India during 6-8 Jan 2014. Paper Code : PID – 1070.M. Anjali, C. Tara Sasanka, Ch. Deva Raj Asst. Prof, and K. Ravindra, Prof & HOD, “ Meta HeuristicMethod for the Design Optimization of a Wind Turbine Blade” published in International conference onrenewable energy and sustainable development (ICRESD - 2014) at KJEI’s Trinity college of Engineeringand Research, Pune, India, January 9-10, 2014. Paper Code : ICRESD : 06, Pp:89
Venkata Siva S.B. , Srinivasarao,G. professor and K.L. Sahoo “ Dry Sliding behavior of Al-BasedComposite prepared with novel In-Situ Ceramic composite developed from Colliery Waste using TaguchiMethod”, Published in the Proceedings of 2nd International Conference on Research in Science ,Engineering and Technology (ICRSET 2014), organized by International Institute of Engineers, Dubai 21st– 22nd March 2014. Pp: 80-84N.Surekha, Deva Raj.Ch , Asst . professor Dr.Srinivas Kolla, professor , K. Prasada Rao , “OptimumDesign of Radial Flow Gas Turbine Rotor Using Ant Colony Metaphor” , Proceedings of NationalConference on Engineering Trends in Mathematical Sciences and Engineering Applications (ETMSEA-2014) , organized by Department of Mathematics , University College of Engineering , JNTUK , Kakinadaduring May 23-24th 2014.K. Praveen Kumar , Asst. Prof , M. Gopi Krishna , J . Babu Rao , NRMR Bhargava , “ Dry Slidingbehavior of composites using high entropy alloy reinforcements in 2024 Aluminium” Proceedings ofNational Conference on Advances in Materials Engineering (Materiuax - 2014) organized by Department ofMetallurgical Engineering , Andhra University College of Engineering (A) , Visakhapatnam during 06-07March 2014. Pp:8
Seminar organized by the Department :“Organized AICTE sponsored National seminar on “Advances in Biomaterials for Medical Applications” on 14-15 thMarch,2014Registration for Higher Degree :
Smt. K. Lakshmi Chaitanya , Asst. Professor, has been registered for Ph.D at Acharya Nagarjuna University,Guntur in March 2014.Sri. Ch. Devaraj, Asst. Professor, has been registered for Ph.D at Andhra University, Visakhapatnam inApril 2014.Sri. V. TaraChand, Asst. Professor, has been registered for Ph.D at Acharya Nagarjuna University, Gunturin March 2014.Smt. M. Vijaya, Asst. Professor, has been registered for Ph.D at Andhra University, Visakhapatnam in April2014Sri. Md. Hasheer , Asst. Professor, has been registered for Ph.D at Acharya Nagarjuna University, Guntur inMarch 2014.Sri. D. Kondal Rao , Asst. Professor, has been registered for Ph.D at Acharya Nagarjuna University, Gunturin March 2014.Ms. Sneha H Dhoria, Asst. Professor, has been registered for Ph.D at Andhra University, Visakhapatnam inApril 2014.
Results Analysis:B.Tech
M.Tech – CAD/CAM GATE -2014 Results:
Faculty Relieved FromServicesSmt. K. BharatiAsst. ProfessorOn 08.02.2014
Sri. B. Ravi SankarAsst. ProfessorOn 03.05.2014
Sri. K. SreekanthAsst. ProfessorOn 26.05.2014
Total Appeared Total Passed Pass percentageI / IV I sem 175 152 86.90
II /IV II sem 209 142 67.94III /IV II sem 204 182 89.22IV/IV II sem 139 136 86.90
National level Applause to III/IV ME RVRJC Students :
Ø III/IV B.Tech Mechanical Engineering students participated in a National Competition “ DELTA SHOOTOUT” organized byM/s TATA Motors at NIT Jamshedpur during January 24th – 26th , 2014 with ATV (All Terrain Vehicle) . The project got 2nd
best prize Rs.40,000/- (Forty thousand rupees only ) . This ATV was prepared with a funding of Rs. 4,00,000(Four lakhsonly) supported by the collaboration of students , M/s Jayalakshmi Automobiles , M/s Pioneer Automotives and themanagement . Dr. K. Ravindra , Prof & HOD , Dr. NVVS Sudheer , Sri K. Bala Prasad , Assoc. Prof , Sri. K. Srinivasa Rao andSri K. Siva Nageswara Rao , Tech – B are the faculty advisors.
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