Testing of materials

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Testing of materials

Materials testing studies the behaviour of materials under different loads. In particular, the relationship between the acting forces and the resulting deformation and the limit stresses that lead to failure of components are considered. There is a range of standardised testing methods to characterise the mechanical properties of materials as precisely as possible.

 
 
Tensile, compression, bending and hardness testing

Traditional test methods are used to determine the behaviour and materials characteristics of standardised materials samples under mechanical stress.

WP 300
     
WP 310
     
SE 100
Materials testing, 20kN Materials testing, 50kN           Frame for load testing, 400kN
Training unit for basic experiments on materials testing: tensile tests, Brinell hardness tests, stress-strain diagrams                                                      Training unit for experiments of an industrial nature on materials testing                                                                                                            Loading experiments on components from structural steelwork and civil engineering; size allows measurements on actual components       
         
SE 110.48
   
Bending test, plastic deformation        
Observation and determination of the transition from elastic to plastic deformation                                                                                          
Impact bending test

The impact test is a method with sudden loading and is suitable primarily for determining the cleavage fracture tendency or toughness property of a material.

WP 400
     
WP 410
Impact test, 25Nm Impact test, 300Nm
Implementation of the notched bar impact bending test                 Notched bar impact bending test with increased impact energy   
     
Impact bending test

The impact test is a method with sudden loading and is suitable primarily for determining the cleavage fracture tendency or toughness property of a material.

WP 500
     
WP 510
Impact test, 30Nm Torsion test 200Nm, motor drive
Manual torsion testing of different materials to fracture              Motorised torsion testing of different materials to fracture  
     
Fatigue of materials

Material fatigue describes a slowly progressive process of damage in a material under ambient conditions, e.g.changing mechanical stress or changing temperature.

WP 140
     
WP 600
Fatigue strength test Creep rupture test
Fatigue strength of bars subject to cyclic bending load; stress-number (S-N) diagram             Demonstration of typical creep phenomena in various materials  
     
Tribology and corrosion

The application of tribology in engineering is used to study friction, wear and lubrication. Wear processes are analysed by means of a so-called tribological system and are described by “systemic” loss variables. Corrosion refers to the reaction of a metallic material to its environment, which causes a measurable change in the material. This can lead to impairment of the function of a metal component or a whole system.

TM 260
     
TM 260.01
     
TM 260.02
Drive unit for tribological investigations Rolling friction in friction wheels              Elasto-hydrodynamic behaviour                    
Modular experimental system for sliding and rolling friction     Slip forces in two discs rubbing together                                      Investigation of the form and thickness of lubrication films
         
TM 260.03
 
TM 260.04
 
TM 260.05
Dynamic friction in pin – disk                                              Frictional vibrations                                                                 Dynamic friction in cylindrical pin – roller                           
Investigations into wear on pairs of friction materials with surface contact      Differences between static and sliding friction, instability                 Investigation of wear in pairs of friction materials with point of contact     
TM 260.06
 
TM 232
 
TM 282
Pressure distribution in journal bearings                  Bearing friction                                                                                  Friction in journal bearings                                  
Demonstration of pressure distribution in a plain bearing with hydrodynamic lubrication                                                       Sliding bearing friction with different bearing material pairings and comparison with rolling bearing friction                    Learning the fundamentals of hydrodynamic lubrication by experimentation                                                                                   
TM 280
 
TM 290
 
CE 105
Pressure distribution in journal bearings Journal bearing with hydrodynamic lubrication  Corrosion of metals                                                        
Illustrates the principle of hydrodynamic lubrication                                                                   Investigation of friction in a hydrodynamically lubricated journal bearing                         Parallel investigation of different influencing factors on different metal samples