Eddy current testing for safe components brochure
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2 D I V I S I O N C T ... the FOERSTER Group component testing division FOERSTER Head office in Reutlingen Competence through innovation and worldwide presence Division CT is based in Dortmund. It develops and produces eddy current devices for non-destructive testing of metal components. From Dortmund, the sales department supports customers in more than 50 countries through subsidiaries and branch offices. www.foerstergroup.de The FOERSTER Group web site introduces Division CT with industrial application examples. It also portrays the historic development and provides access to the...

3 C O N T E N T S Component Testing Semi-finished Product Testing Maintenance Testing Metal Detectors + Magnetics Examples of application Valves / valve tappets Valve seat rings Cylinder bores Camshafts Fuel injection lines Axle pivots CV-Joints Brake discs Gearbox shafts Wheel hubs Ball pins Piston rods /piston pins Bearings Gear racks Rolls Drive shafts Valve seats Basics Eddy current technology Crack detection Material and microstructure testing Multi-frequency testing Crack detection with test electronics and sensor systems Material testing with test electronics and sensor systems...

E_MAG_1_Druck_Pfade.indd tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:6.00pt "Arial", sans-serif; } .font1 { font:8.00pt "Arial", sans-serif; } .font2 { font:15.00pt "Arial", sans-serif; } .font3 { font:18.00pt "Arial", sans-serif; } EDDYCURRENTTECHNOLOGY The eddy current technology The eddy current technology as per EN 12084 does not only detect material dis-continuity and imperfecͭtions such as cracks, lami-nations, pores or cavities on the material surface. It also makes it possible to check materials for their properties to identify faults such as material mix-ups or...

5 C R A C K D E T E C T I O N Eddy current crack detection without physical contact can also be integrated into more complex manufacturing sequences. The illustration shows how the components are detected during 100% testing in the automated testing process while the test results are documented online and the data is processed for documentation. In addition, the sorting of defective parts is carried out. Detecting cracks in the material For crack detection, the surface of the part to be tested is scanned without physical contact by one or more eddy current probes. For this purpose, the test...

6 Magneto-inductive testing determines the significant material properties from the electric and magnetic properties of ferromagnetic components. M A T E R I A L A N D M I C R O S T R U C T U R E T E S T I N G Checking materials for their properties For testing of material properties, the specimens are passed through an encircling testing coil. For special applications, e.g. for local checks for surface hardness or hardness penetration, sensor systems adapted to suit the specimen are provided. In modern production lines, magneto-inductive testing for material properties functions fully...

7 Simultaneous multifrequency testing During simultaneous multifrequency testing, a synthesised transmit signal is generated over a wide band. The signal consists of a multitude of individual frequencies. During testing, these individual frequency components are simultaneously fed into the specimen to be tested as a pulse. As the testing time is only Serial multi-frequency testing Serial multi-frequency testing works with several different testing frequencies. The individual items of test information are subsequently determined with the defined frequency settings in a single testing...

8 C R A C K D E T E C T I O N W I T H T E S T E L E C T R O N I C S A N D STATOGRAPH® The variable ECM multichannel solution provides for a user-specific configuration in an industrycompatible 19“ instrument rack. The modular design provides capacity for extension, e.g. for magneto-inductive testing. Optimised protection of system components thanks to standard-fitted cooler with a closed cooling circuit. STATOGRAPH® ECM Eddy current test device in modular design, for simple standard applications. The test classifications of the STATOGRAPH® ECM are “good”/ “bad”. Inexpensive STATOGRAPH® DS...

9 S E N S O R S Y S T E M S Testing probes for crack detection Fixed and rotary eddy current probes are used for crack detection on components. A comprehensive range of standard sensors is available for the most varied testing jobs. This way it is possible to design Special sensors If a testing job requires special solutions, FOERSTER designs and manufactures individual customised sensors. The range extends from adapting existing Rotating sensor systems If the task requires it, testing can be carried out with rotating sensors and a stationary specimen. Various rotating heads and rotary...

10 MAGNATEST® ECM Test device in modular design, for simple standard applications such as hardness testing or material identification. For mono-frequency testing with group analysis. PC interface. Can be extended with EddyWin operating and visualization software. Depending on the testing function, MAGNATEST® ECM can be extended with an external power amplifier. MAGNATEST® D The processor-controlled magneto-inductive compact test device is designed for fully automated testing of material properties in single coil absolute mode. In addition to the fundamental wave, the harmonic components of...

11 Probes Wherever encircling coils can not be used, probes which are adapted to the testing task are employed. This makes it possible to carry out testing in positions which are difficult to access or to determine the local characteristics of the microstructure. S E N S O R S Y S T E M S Coils for testing of material properties According to the test arrangement, the sensors for testing material properties are designed as coils or as probes. The various MAGNATEST® test devices are provided with a comprehensive range of standard testing coils with round and rectangular cross sections, as...