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Besides its original field of application–the characterization of microstructures–the metallography is often referred to when analyzing failures of electronic components and assemblies. In this context, the cause of the failure is analyzed by means of a metallographic section. At this point, the precondition and difficulty is the right choice of the section plane. If it is not optimally selected, there is a risk of overlooking the defect and therefore of not recognizing important correlations. The X-ray computed tomography is an efficient method which helps making the right choice and facilitates a targeted metallographic preparation. Conspicuous features inside the damaged component can be detected in advance by means of a three-dimensional volume model established by computed tomography. Based on this information, an appropriate cutting plane can be chosen in the volume model and a targeted metallographic section can be prepared. In the following, it is possible to view the conspicuous spot with high resolution and to analyze its microstructure in selected areas. In order to demonstrate the use of computed tomography as a supporting technology in the target preparation, the following article establishes a link between both testing technologies and their application to the press-fit technology which serves as joining technology when assembling electronic components.

X-Ray Computed Tomography as Supporting Technology in The Failure Analysis of Press-In Connections for Electronic Assemblies