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Siemens Presentation

Transcript: Malaria an ambulance a semi permanent clinic a healthcare information center a transporter of medical supplies The Design We will send a mass text to all the residents of the areas the train will pass through and stop at (accessing this information through partnerships with local government), and inform nearby hospitals, main facilities or government with emails or written notifications. To those with wifi, we could set up a website with: the countdown to arrival of train information on the train all the information that is provided in the education section of the train a map of where the train goes health information How we inform the people in rural areas when the train is coming Examples? How we will educate the people in rural areas: All of this information will be distributed in both English and all the spoken Indian dialects of each of the regions. On computer screens and demonstrated in videos on tv screens, as well as presented in demonstrations by medical personnel. This demonstration is then filmed and remains at the station on a Siemens video screen, so that people can come and see it any time they like. basic information (basic hygiene) how to treat common illnesses in each area (targeted and specific to each individual area we pass through) new medical information How we will inform each rural area that the train passes through when the train will arrive: -Siemens Financial Service -Incorporating Support Clubs in schools worldwide to hold fundraisers -Work withing already established charities & organizations to seek financial aid (WHO & UN) -Private donations and grants -Government funding for registering as an NGO -local fundraising events Typhoid Our Resources How is the Trambulance adaptable? Hepatitis is a term used to describe inflammation (swelling) of the liver. It can occur as the result of a viral infection or because the liver is exposed to harmful substances such as alcohol. Model of the Website Pages: Typhoid fever is a bacterial infection that can spread throughout the body, affecting many organs. Without prompt treatment, it can cause serious complications and can be fatal. ADAPTABILITY- it's possible! Major railway line: Karnataka Express What is it? BOAT Hepatitis Common Diseases a large cargo plan that contains smaller carts that drive on land or smaller planes that can fly to other regions, distributing materials and information to the citizens 7 detachable carts that can drive on roads A model of the mass text: Incorporating Siemens & Funding Malaria is caused by the plasmodium parasite. The parasite can be spread to humans through the bites of infected mosquitoes. Through research of the desired area, the Trambulance can be implemented to any region of the globe. The way in which the system is put into practice is simply modified to best fit that area. The Trambualnce NO, the Trambulance can be changed and modified to suit and benefit all different geographies, cultures, locations etc. Thank you for listening! For example, if a train system has not yet been developed in that region or isn't the most established mode of transportation, it can simply be substituted with the main transportation utilized in that area. Is the Trambulance limited to just Karnataka? We would look at forming a partnership with Siemens in order to receive the best advice at running such an extensive service such as Trambulance PLANE a large boat/cargo ship that contains smaller carts that drive on land or smaller boats that travel through canals Location - Karnataka Benefits Nearest Hospitals: Kerudi Hospital & Medical Research Centre in Bagalkote, Karnataka Panduranga Hospital in Ballari, Karnataka The Trambulance is simply a system that works with existing transportation in the desired country in need of support and improvement and utilizes it to its best abilities. Means of funding Trambulance ...transportation that enforces a healthy lifestyle all around the world

Siemens Presentation V2

Transcript: * A. Kiani, A.M. Annaswamy, and T. Samad, “A Hierarchical Transactive Control Architecture for Renewables Integration in Smart Grids.” HYCON Workshop, Brussels, 2012. A Transactive Controller for Resiliency Bucket: Growth of Renewables in the Energy Sector Across the Globe We use an Primal-Dual Interior Point Methods to form differential equations for solving the constrained optimization problem of the ISO from the associated Lagrangian. Smart Grid Goals Numerical Example Dynamic Market Mechanism: A game between 3 players Power Balance Tertiary Level Smart Grid Main Challenge: Intermittencies LQR loses stability in presence of delays Our e-CPS design recovers the performance and input of non-delayed systems Co-Designs for Wide-Area Control of Power Grids Controls the communication layer Actively manages Latencies Optimizes control performance Ensures resource availability Independent System Operator To achieve the above with renewable energy despite intermittency & uncertainty To ensure affordable power When renewables enter: Courtesy of Olympic Peninsula Project, IBM TIS: Transactive Incentive Signal TFS: Transactive Feedback Signal Bus consists of: 45 conventional generators 9 renewable generators (15% penetration) 99 consumers 186 transmission lines “In almost every operating hour, wind could be producing across the full range of its potential production, from close to zero to almost maximum output.” A Cyber-enabled Transformation! Intermittent and Uncertain Energy Resources (i.e. Wind, Solar) Departure from load forecast Unreliable equipment network and generation outages Tertiary Level designed using the Dynamic Market Mechanism In general, we model generators through quadratic cost functions as Illustration of our approach on an IEEE-118 bus The Independent System Operator acts on behalf of the Consumers and the Generators by: Maximizing the utility of consumption Minimizing the cost of generation while respecting system constraints. To quantify the GenCo constraints, we distinguish between two classes of generators Conventional (Coal, oil, gas, etc.) Renewables (Solar, wind, etc.) Transactive control: Our definition Secondary Level A Cyber-enabled Transformative Power Grid that accommodates renewables, enables efficiency and customer choice, and delivers affordable and reliable power. Transactive Control Framework* Pacific Northwest Demonstration Project 112 Households participating in 2009 60,000 households in an ongoing project (2010-2015) Spans several states IEEE 30 bus Case A Smart Grid Integration of Renewables is a global imperative Building blocks: Transactive Approach Dynamic Market Mechanisms Demand Response Taxonomy Transactive approach: Active Control+Market Mechanism Design Case Studies Uncertainty: Wind and Load Incentive Signal: Ex. Dynamic Pricing Feedback Signal: Adjustable Demand (Market Level) (Price Responsive, and Regulation Responsive) Area Control Error (Secondary Level) Governor Control (Primary Level) Active Communication Control Transactive Control: Example An apt example of an Energy-Cyber Physical System! To maintain power balance in the system. To ensure that operating limits are maintained Generators limit Tie-lines limit To ensure that the system frequency is constant (at 50 Hz or 60Hz). The Renewables are coming! Wind Properties: : Actual Wind Power : Mean value of the projected wind.  Current Market Practice : ARMA model of the actual wind power.  With Transactive Control Transactive control: An Emerging Paradigm* Generation = Demand (Power Balance) Demand Response Phase angles using our e-CPS approach (Gen 1) A Dynamic Market Mechanism Dynamic Market Mechanism Bakery: Paradigm Shift: From Current to Smart Grids Simulation Results Conventional generators are constrained by Main features: Renewable Energy Resources Demand Response Problem Penetration from renewable sources of energy (wind, solar, etc) US Northeast blackout of 2003 Challenges Delays in the network Shared communication resources Solution A Energy-cyber-physical approach Effect of Wind Uncertainty Summary Smart Grid Tools A Transactive Approach to Smart Grid Control Battery: Primary Level renewable generators are constrained by * Hammerstorm et al., “Standardization of a Hierarchical Transactive Control System” Denoted Buckets, Batteries and Bakeries, the taxonomy defines 3 classes of consumers The use of dynamic market mechanism to send an incentive signal and receive a feedback signal within the power system’s node structure Transactive Control --> Control architecture that coordinates Market Transactions Active Control at the AGC level with Regulation Demand Response The use of dynamic market mechanism to send an incentive signal and receive a feedback signal within the power system’s node structure Incentive Signal: Dynamic Pricing Feedback Signal: Adjustable Demand Generators Intermittency: Wind Energy Equilibrium under constant flux. GenCos and ConCos adjust their power level using a recursive

Siemens FY20 Presentation

Transcript: NASIF & Siemens Partnership Annual Meeting- FY20 Siemens Healthineers-In Vitro 08/09/20 Greetings Greetings It is with great pleasure that we welcome you to the 2nd Annual Meeting at NASIF Medical. Although you have traveled at these trouble days regarding COVID-19 Pandemic Virus, it is our honor to welcome you. I would also like to thank you all and our other colleagues in Siemens Egypt office for supporting us during this year. Welcome you and we wish you a healthy and enjoyable stay with us. Agenda We will talk here about: FY20 Achievement. Agenda FY20 Achievement Development FY20 Customers Base FY21 Plan. FY20 Achievement FY20 Achievement We are talking about what we have achieved during the Fiscal Year 2020. FY20 Achievement Development We will see here what is the development have been achieved in comparison with the Fiscal Year 2019. FY 20 Achievement Development FY20 Customer Base We will see here what are our new Business Partners with their installed systems FY20 Customer Base FY21 Plan We will see here, what is the next to be achieved and done for the next fiscal Year 2021. FY21 Plan NASIF-Siemens Team Siemens -NASIF Team 1. Mahjoub Hakim, Service & Sales Team Leader. 2. Esra Osman, Chemistry& Immunoassays Business Unit Sales & Application Specialist. 3. Zuliekha Idriss, Haematology & Molecular Business Unit Sales & Apllication Specialist. 4. Ahmed Humeidan, Service Engineer. 5. Samah Alobeid, NMPB Registration & Clearances Officer. New employees We are going to assign new employees: 1. Sales and Application Specialist for POC Business Unit. 2. Other Service Engineer. 3. Logistic Specialist. New employees FY 20 Achievement FY20 Achievement Based on our current P.Os records, we would like to inform you that our performance of this Fiscal Year 2020 was 102 % of our Target. FY20 Achievement Development Comparison between the two fiscal years (2019 & 2020): FY Total Purchase Orders Value ($) FY19 687,215 FY20 1,019,598.97 Difference(+) $ 332,383.97 Difference(+) % 33.25 FY20 Achievement Development Performance Graph % National Medicine Poisons Board Registration (NMPB) We've registered All reagents and consumables that are needed and contracted with our Customers' Systems. So we have no any problem with NMPB clearances process. Besides that, we are following up NMPB System requited documents for any update. NMPB Registration Customer Base Customer Base FY20 Customer Trainings Customer Trainings 1. Before COVID-19 Pics of Trainings During COVID-19 & Quarantine During COVID-19 Our Mission was: We can't Stay home for you, you can stay home for us, Please! Customers Events on 7th Feb, 2020, we invited Target Potential Customers to see the Go-Alive of our Analyzers at Alzaytouna Specialized Hospital supported by Siemens to be as our reference story for them and promotion. Events FY20 Challenges & Difficulties FY20 Challenges 1. COVID-19 Pandemic Virus. Affects on increasing our Sales and Promotions. Affects on shipping costs. Affects on international airlines traveling dates. Affects on customers reagents draws per Month. Affects on our reagents expiry dates (expired reagents). 2. USD Exchange Rate: (increasing of Inflation ) Affects on Sales. Affects on predicting the Market. RANDOX We are going to contract with RANDOX for distributing their QC Materials to our Siemens & NASIF Customers. This will help to prevent our customers from searching and getting the needed QC materials for our Siemens Systems outside. will help us to be as a consultant for our customers in preparing them for ISO 15189 Accreditation. Other Business Partners related to Siemens 1. Reagents: Regarding our contracted customers annual reagents draws/Year: the foretasted Reagents P.O for FY21 will be 707,526 $. 2. Systems: Regarding the market opportunities, we are predicting to have P.Os with 500,000$ from Instruments. FY21 Forecasting FY21 Forecasting Target Customers 2021 Target Customers We are targeting: 1. National Medical Supplier Fund (NMSF): This represents the main Medical supplier for the governmental Hospitals (MoH) and the National Health Insurance Funds Medical Centers in Sudan. 2. Military Hospitals: We would like to increase our sales with this VIP Customer in their all Related Hospitals all around the country. 3. National Health Insurance Fund (NHIF) Medical Centers. 2021 Planned Activities 1. Atellica Launching Event. 2. Military Hospitals Workshops. 3. COVID-19 Workshop. 2021 Planned Activities Conclusion Special Thanks to Mr. Michael Schmermer for these types of kind visits and support. We hope that FY21 be a prospective year for both of us NASIF & Siemens. Looking forward to more support in Service and trainings that help us to be more stronger and knowledgeable. Thanks you & see you in other next visits and events. Conclusion

siemens

Transcript: Ahmed kadous Analysis & planning Growth Analysis & planning Growth Thank You (cc) photo by Franco Folini on Flickr compare the results with the plan to modify it according to the current situation . Existing Customers (cc) photo by Metro Centric on Flickr The DCA Vantage System plan to achieve objectives . milestones to be compared with the plan . Budapest San Francisco Prospection classification of the customers setting strategic objectives. Accounts new customers (cc) photo by Metro Centric on Flickr Stockholm RAPIDComm Data Management System The CLINITEK and MULTISTIX (cc) photo by jimmyharris on Flickr

Training Presentation, Siemens

Transcript: UTSS Training, 2017 What they do: Design training curriculum (aligned to Installation Manual) Instruct according to the designed curriculum Evaluate trainees Capture content for online courses Evaluate and test online courses Work with TM for feedback, training design, etc. Best practice collection 1) What are they? Descriptions of the skills and attributes OEMS outline for a perfect install. 2) Where did they come from? Analyzed several quality reports and identified common trends 3) What do these provide? Standards provide (minus technical know-how) a similar and consistent training experience across all modalities and systems Align training to quality Provide field trainers a consistent, across all modalities, a method to give feedback on trainee Emphasizes other necessary skills such as customer service, professionalism, communication, organization, etc. Field Trainer developed/aligned training curriculum for all systems Curriculum paired with online courses Vast variety of online courses Regular training progress/ feedback captured Greater training/scheduling consistency Increase access to OEM training Builds essential technical knowledge Re-training classes both in person and online Mid Training Evaluation Meet weekly to review training & progress Reduce biases in training/equally distribute training Report to VPs for monthly progress updates Multiple points of view from various parts of the company (HR, Zone Manager, Training, Quality, Finance) Leadership Provide employees with a uniform training experience across all modalities Focus training on the most important technical skills identified in quality reports Plug and Play adaptability Easy distribution of training related information to installers Building blocks of UTSS Training In Progress Curriculum outlined by Field Trainers for each modality/system Adjust training curriculum in live-time Designed not as a "one size fits all approach" 1) Mid Training Used to guide the remaining training Focus on necessary skills Identify what has been accomplished Ensure the Trainee is progressing Learn, Review, Lead model Provides trainee experience in gradual leading Train specifically to the needs of each Modality EX: MRI training requires more time than XP Training Structure Evaluating Training Hosted in the LMS Training Considerations Field Trainers Online Content Currently Available X-Ray Room Curriculum Outline How is the evaluation used? Training Committee In Progress & Long-Term Goals Timeliness Overall appearance Customer interactions Appearance of the room Overall Goals Training Standards Zero Defects Focuses installation on technical aptitude Ensures installation protocols End of Training Evaluation 1) End of Training Used to sign off Used to guide further training if necessary Learning Model Modality Overview Introduction to Bluefolder Philips Cath Lab training UTSS Customer Service & Communication Reduce Delay hours (adaptability and problem solving) Use feedback reports to improve Future of Training Trainees are rated on the 3 Training Standard Bands (Product knowledge, Professionalism, Leadership) Welcome Professionalism Online Content, part 2 https://utss-training.torchlms.com Courses available for New Hire Class Courses to complete during training Product knowledge Communication Project management etc. Installation preview courses Review specific installation processes (open to all in Catalog) Review courses during gaps of installations Training Committee Training Design Curriculum Learning Model Feedback/evaluations Training Standards Field Trainers Online Content Installation

Siemens Presentation

Transcript: George J. González MIchael Zardon Siemens History Ernst Werner Siemens Werner was born in Gehrden,Germany. After joining the Prussian Millitary Academy and Later returning from the war, he chose to work on perfecting technologies that had already been established. And eventually became known for his advances in technology. First starts In 1847, Siemens and Johann Georg Halske founded the Siemens & Halske Telegraph Construction Company. Other than one of his first invention, the pointer telegraph, Siemens built the world's first electric elevator in 1880. In 1848, the company constructed one of the first European telegraph lines from Berlin to Frankfurt In 1879, Siemens & Halske presented the world’s first electric train in which power was supplied through the rails. And In 1881, Siemens & Halske built the Gross-Lichterfelde Tramway, the world's first electric passenger train at the Berlin industrial exibition. Today, Siemens is one of the largest, most innovative companies in the world. Siemens Siemens is a global powerhouse focusing on the areas of electrification, automation and digitization. One of the world's largest producers of energy-efficient, resource-saving technologies, Siemens is a leading supplier of systems for power generation and transmission as well as medical diagnosis. Core Values Responsibility, excellency and being innovative – are the basis for Siemens’ success. "They provide us with orientation and guide our decision-making processes. With our daily actions, we express them and make them come alive." Siemens has been standing for innovative strength, a passion for technology, sustainability, responsibility and an uncompromising commitment to quality and excellence. Future of BAS For Siemens, digitization involves the application of new technologies like data analysis, Cloud or the Web of Systems. The virtual and real worlds are being fused. In this process, Siemens is working to help its customers boost their productivity along their entire value chain – from design, engineering and operations to production and service. Jobs Jobs Siemens has around 377,000 employees in nearly all countries of the world. About 33 percent of employees are located in Germany, 28 percent in Europe (excluding Germany), 21 percent in the Americas and 18 percent in Asia and Australia. Siemens does anticipate the hiring of new technicians within 6 months. Divisions Siemens has many classifications of jobs in their Control Division: Fire safety Security Building automation Heating Ventilation and air conditioning Energy management Top 3 challenges Controls Contractors face: Keeping up with new technology Lack of skilled labor Increased competition Products & Services Products & Services Siemens has a comprehensive product range. It includes systems and services for power generation, transmission and distribution, as well as energy-efficient products and solutions for production, transportation and building technology, right up to technologies for high-quality and integrated healthcare. Siemens Provides the desigo cc at the management level and among many for the automation level like the PXC Compact Series Controllers. All tech and controllers are in house. Controller The PXC close compact series is a high-performance Direct Digital Control (DDC) supervisory equipment controller.The PXC Compact operates standalone or networked to perform complex control, monitoring, and energy management functions without relying on a higher-level processor. The PXC Compact is available with 16, 24, or 36 point terminations. The PXC-16 provides control of 16 points, including 8 software-configurable universal points which include: 3 Universal Input 5 Universal output 2 Digital Input 3 Analog Output 3 Digital Output

Presentation for Siemens

Transcript: OVERVIEW 2008 • CWI • Welding • Procedures and process • Robotic & Automation • Inspections & testing Technical Skills WPS, WPQ & PQR witness, review, training and qualification NDE activities such as UT, RT, MT and PT (Evaluate to ASME & AWS Code Standards) Developing Quality Standards and QAP/ITP, Test plans, Maintain and Track NCR Reports. Drafting and designing in AutoCAD and SolidWorks. Robotic Welding. Prototype welding on ABB and KUKA robots Welding, cutting & drilling FMEA & Fishbone analysis, TQM, Lean Six Sigma Training Tutor for CSWIP 3.1 weld course Expertise in handling ISO 9001, ISO 16949 & OHSAS audits in various strategic business units Skills & Achievements Software Skills Masters in Welding Engg, NIT, India EDUCATION MS-Materials Engg, UNT, TX 2004 Customer Interaction Field Visit Quality Improvement (Lean, Six sigma, FMEA) WORK EXPERIENCE Masters-Material Science & Engineering GPA: 3.3 Management Skills TATA Projects Limited Outstanding Performer of the Year 2011 - 2012 Outstanding Performer of the Year 2012 - 2013 Silver Academy Award 2014 - Project Execution Masters-Welding Engineering GPA: 3.7 National Institute of Technology, Trichy, India Born in Mancherial, India Thank you Liaison to planning, purchasing, and production departments Monitor inventory work flow reports Developing/ modifying material & document expediting procedures Analyze workflows and processes, and propose customized changes for more efficient results. Expediting. Follow up with vendors Assessment of vendor's manufacturing/ technical/ quality system Tracking and Verifying purchase Responsibilities Characterization of simulated heat affected zone in P92 steels at WRI Trichy India Responsibilities Responsibilities Core Qualities Diverse Domain Knowledge(Oil & Gas, Power & Energy, Automotive, Construction Products) Team Leadership & Project Management Why Me... Metallurgy/Welding Engineer Ravikiran Rao Avirineni NDE ASNT-II RT, UT, MT & PT Procedures Inspection & testing Overview of my past 29 years Code Knowledge 2014 Metallurgy/Welding Engineer -Halliburton Achievements November 30, 2016 Bachelors in Mechanical Engg, Osmania Univ, India ASME Sec II, V, VIII, IX, B13.1, B13.3 AWS D1.1, D1.2, B2.1 API 5L, 1104, 610, 598, Spec 5B ISO 15614, ISO/TC67 NACE MR0175 Welding Engineer, Tata Projects Ltd, India Bachelors-Mechanical Engineering GPA: 3.3 • More than 3 years of experience in leading the project team • Customer requirement understanding & study, proposal preparation, estimating project timelines, project execution • Responsible for quality checks, quality assurance as per CMMI standards for customer deliverables and review meetings and issue resolutions • Coordination with vendors/suppliers for Prototype generation • Well versed with Microsoft Word, Excel, Power Point & MS Project MATLAB LabVIEW Solid Works AutoCAD Others Initiated and organized blood donation camps Organized corporate social responsibility events Senior Engineer (Welding Metallurgy) June 2010 – July 2014 6+ Years Of Experience... 2008 Osmania University, Hyderabad, India I have always made genuine efforts towards achieving more technical exposure which in turn has enabled me to have hand-on experience on various technologies and tools. I have always tried to not be Domain bound and have worked and gathered knowledge and work experience in various domains I have always tried to be the face of the project and tried to be the go to person in any of the client queries or meetings thereby always building a good rapport and a close working relationship with all my clients I am a quick learner and have demonstrated this by learning various technologies , methods and tools during my career when as and when it was required during the execution of the project. I have an enriched relevant work experience of 5+ years in the in the Power & Energy domain , as well as construction product domain with expertise in welding, quality control, auditing and inspections, which puts me in the good position to be considered for this role I always pride myself for having a never quenching thirst to learn, improve and grow and for that I motivate myself at every step. I have a passion towards what I have learned and what I do, that is engineering and wish to continue the same Presented Papers Halliburton Management Skills Metallurgy/Welding Engineer May 2016* About me 1987 Single point contact • WPS, WPQ w.r.t ASME IX, AWS D1.1 & B2.1 welding codes Welding processes, welding consumables SMAW, GMAW, GTAW, SAW, FCAW • Selecting of materials • NDE (UT,RT,PT &MT) w.r.t ASME Sec V, SNT-TC-1A • Heat Treatment, Post Weld Heat Treatment (PWHT) and stress relieving • Providing support • Training personnel Lead welding area in 3 member metallurgy team at Halliburton Lead welding and inspection team at TATA Projects Ltd. India (3 welding engineers, 1 NDE, 3 welders, 3 cutters etc) Coordinated with design and production team in key areas of manufacturing Audited quality and safety of

Siemens Presentation

Transcript: Inhomogeneous material characterisation in ducts - Internship purpose and preliminary results Restricted © Siemens 2017 Arnaud Perdigon, Thibaud Le Scolan, Jacques Cuenca, Laurent De Ryck Realize Innovation Purpose and Motivation Develop a method for acoustic material characterisation in ducts with varying properties : Temperature Geometry Material Properties (Porosity, Resistivity, Tortuosity,Thickness,...) Predict Acoustic behavior in experimentally unavailable condictions Go beyond ISO Standards Technical Content Industrial relevance Project Initiated by Product Management from customer requests Potential customers : muffler and silencer manufacturers, e.g. : Previous Work Previous Work Comparison of state-of-the-art and innovative methods in material testing Internship of Clémentine CRAMPON Internship of Clémentine CRAMPON Study of : Transfer Matrix Method (TMM) for a cone Transmission Loss (TL) in convergent and divergent acoustic cone Results : Validations with Virtual.Lab (cones and Biot model) Cones implemented as features in Test.Lab Development of a new in-situ road absorption measurement techniques Internship of Kévin MENINO Internship of Kévin MENINO Study of : Absorption coefficient Uncertainty of microphones positions and noise Coherence Outdoor experimental setup Multi-microphone absorption measurement Multi-microphone absorption measurement Sample of gravel Multi-microphone absorption measurement Our Work No absorption peaks Our Internship Our Internship Objectives : General model of wave propagation in ducts : With varying properties (TMM) Sensitivity analysis Validation : Sound transmission loss (STL) in selected cases Optimisation : - Material and geometrical design for a better STL - Characterisation of inhomogeneous media - Extrapolation to unavailable experimental conditions Hamet & Berengier Model Hamet & Berengier Model Porosity K Tortuosity Resisitivity : Difficulty of air to pass in an environment : Volume of void-space : Total volume of material 0 L L Darcy's Law : Analogy with Ohm's Law : Impedance rigid wall Reflection Coefficient Absorption Coefficient Hamet & Berengier Model A. Sudies of sensitivity of the different parameters of the model I. Analytical study on the different asymptotes Low frequencies High frequencies Conclusion low frequencies : Absorption coefficient increases when the resistivity increases Conclusion high frequencies : Absorption coefficient increases when : Tortuosity decreases Porosity increases Hamet & Berengier Model II. 3D sensitivity Study Low Frequencies Hamet & Berengier Model Hamet & Berengier Model High Frequencies II. 3D sensitivity Study Hamet & Berengier Model III. Study of the tangent Assessment : 2 methods to estimate the parameters of materials, with the tangents or fitting with the model TMM Transfer Matrix Method Objective : Approximate each part of a tube by Transfer Matrix Transfer Matrix Method A. Methods Z : Impedance of the material k : Wave Number L : Length of the tube 1. Simple Case Working with pressures and velocities Working with pressures and flows Guarantee the continuity of flow at the interface between the duct and the acoustical element for plane wave ? Acoustical Element A. Methods Transfer Matrix Method 2. General Case assembly of n blocs : compound transfer matrix Meq Incident Wave Transmitted Wave f(j) : Frequency Li : Length of the Layer i Si : Area of the Layer i Ti : Temperature of the Layer i Pi : Parameters of the materials (Porosity, Tortuosity,Resistivity) B. Parametric Studies Transfer Matrix Method 1. Expansion Chamber B. Parametric Studies Transfer Matrix Method 1. Expansion Chamber a. Different inlet and outlet cross section areas Conclusions : The best TLs are obtained for So < Si For So=Schamber, TL is constant and > 0 for all frequencies When So > Schamber, Rio has to be very important to obtain significant values of TL. B. Parametric Studies Transfer Matrix Method 1. Expansion Chamber b. Multiple Chamber Conclusion : Increase number of chamber amplify the TL but moves that effet to higher frequencies. B. Parametric Studies Transfer Matrix Method 2. Acoustic Cone a. Modification of Clémentine's code B. Parametric Studies Transfer Matrix Method 2. Acoustic Cone b. Cases studied B. Parametric Studies Transfer Matrix Method 2. Acoustic Cone c. Therotical & approximated Cone Conclusion : The error shows that the approximation of cone by multiple straight layer is possible and correct for air. B. Parametric Studies Transfer Matrix Method 2. Acoustic Cone d. Divergent Cone fullfill with Gravel Conclusion : ? There is a lack of understanding on this graph B. Parametric Studies Transfer Matrix Method 3. Convergence Study Indications : Initialisation with N=1 Loop executed for each frequencies in the range studied Concatenation of Meq Number of Layer Error calcul between TL2 (Theoritical TL) and TL1 (Approximated TL) Temperature Studies Temperature Studies I. Thermal studies in ducts Objective : Understand which I.

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