Method for measuring the tension holding force of the fastening of a pin in a plate

摘要

The known methods for measuring tension holding forces are in general not usable for sensitive elements such as, for example, thin electric connecting pins which are fastened in glazing. The object is therefore presented of providing a method with which it is possible to measure the tension holding force of the fastening of a pin in a plate, the method being intended to be particularly suitable for sensitive elements. The object is achieved by means of the invention in that the plate (1) is laid in a holding device (2) and in that a tension force is exerted by a tension device (3) on the pin (4), axially directed and increasing in a controlled fashion, and in that the change in the position of at least one of the pin ends (5) is simultaneously measured parallel to the tension direction by means of a position-sensitive detector (7). The particular advantage of this method is that the application of the tension force on the one hand and the measurement of the position change of the pin end (5), on the other hand, are carried out separately from each other. The invention is applied particularly in the testing of pin glazings in printed circuit boards. <IMAGE>