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Gabriel Aroeira Ferreira
Abstract

    1. Introdction of my work

    2. Tribometer test

    3. Microscope test

    4. Matlab analysis

    5. German Experiences
1. Introduction of my work

 Improve Brake System

 Doing Experiments

 Studying Friction Coefficient




   Brake System                   Experiments   Friction Coefficient
Conception of my work
Friction
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and/or
material elements sliding against each other

Friction Coefficient (µ)
Is an empirical measurament – it has to be measured experimentally, and cannot be
found exactly through calculations.
2. Tribometer test
                         Three-speed     telemetric
            Frequency    transmissions   data                Data-        PC / Post-
            converter                    transmission        logger       Processing




  Three-
  phase-                                                 …
  motor
                                                                 …       LA   …
                                                                         N


            M
            3~

                                                             Fast feed
                                                             lever

  Disc-
  adapter    Sample with 3-axes                         Linear table
                                     Measure-
             thermo-                                    with Multifix-
                         force-      ment and
             couples                                    holder
                         sensor      load unit
Tribometer Machine
Tribometer result
3.Microscope test   Source of   Camera
                         light



                                     Microscope

Computer




                                         Track
Joystick
Control
Surface photo by microscope 1
                                                  Pressure: 10 bar
                 Rubbing Direction                Velocity: 145 km/h
                                                  Duration: 40 s




     Ringlicht                       Spaltlicht
Surface photo by microscope 2
                                                               Pressure: 10 bar
                                                               Velocity: 145 km/h
    Rubbing Direction                                          Duration: 40 s




                                                                              Rubbing Direction
               Spaltlicht with different positions of sample
4. Matlab Analysis
5. German Experiences

 Cities


 Language


 Different Cultures on SENSE Program


 Internation Dinner


 New Friends


 Many Stories
Thank You!



Gabriel Aroeira Ferreira

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IDS Braunschweig - Final presentation

  • 2. Abstract 1. Introdction of my work 2. Tribometer test 3. Microscope test 4. Matlab analysis 5. German Experiences
  • 3. 1. Introduction of my work  Improve Brake System  Doing Experiments  Studying Friction Coefficient Brake System Experiments Friction Coefficient
  • 4. Conception of my work Friction Friction is the force resisting the relative motion of solid surfaces, fluid layers, and/or material elements sliding against each other Friction Coefficient (µ) Is an empirical measurament – it has to be measured experimentally, and cannot be found exactly through calculations.
  • 5. 2. Tribometer test Three-speed telemetric Frequency transmissions data Data- PC / Post- converter transmission logger Processing Three- phase- … motor … LA … N M 3~ Fast feed lever Disc- adapter Sample with 3-axes Linear table Measure- thermo- with Multifix- force- ment and couples holder sensor load unit
  • 8. 3.Microscope test Source of Camera light Microscope Computer Track Joystick Control
  • 9. Surface photo by microscope 1 Pressure: 10 bar Rubbing Direction Velocity: 145 km/h Duration: 40 s Ringlicht Spaltlicht
  • 10. Surface photo by microscope 2 Pressure: 10 bar Velocity: 145 km/h Rubbing Direction Duration: 40 s Rubbing Direction Spaltlicht with different positions of sample
  • 12. 5. German Experiences  Cities  Language  Different Cultures on SENSE Program  Internation Dinner  New Friends  Many Stories