Non-destructive testing of wrought materials, individual components or entire constructions makes it possible to detect early partially hided defects and further deviations from the desired condition. Thus, failure and malfunction can be prevented. After the test, the test object remains fully functional and can be reused again. The development of ultrasonic and other acoustic methods, radiography, computer tomography, thermographic methods, eddy current and flux leakage testing is aimed at both coarse structure testing and material characterization. This means that, for example, voids, cracks and delaminations can be detected directly, but also their occurrence can be predicted from material parameters and intrinsic variables such as density, thermal diffusivity, strength and residual stresses. Non-destructive testing methods can already be used during production and thus enable the control of process parameters. New analytical and numerical simulation and reconstruction methods support and optimize the testing procedure and the evaluation of recorded data. Defects can not only be detected, but also their size and precise position can be determined.
BAM offers a very wide range of optic-spectroscopic methods and further methods up to X-ray spectroscopy, NMR spectroscopy and mass spectrometry. Many of these methods are indispensable for determining the chemical composition of gases, liquids and solids and enable the highly sensitive detection of impurities. In addition, element distributions or structural properties can be displayed with high spatial resolution and evaluated quantitatively. The multidimensional visualization of the measurement data and combination of methods will further improve the detection sensitivity of the methods and the reliability of the analysis. Miniaturization, online measurement techniques and new test strips expand the areas of application and simplify on-site use.
BAM is developing innovative methods to investigate new materials, compounds and manufacturing processes. Furthermore, the methods are validated according to their application and certified reference materials for calibration and function control of these methods are developed. BAM plays a leading role in standardization of such methods.