Method and apparatus for mechanical pressure test of composite materials in the laminate thick direction

摘要

The subject matter of the present invention is a method and a device for sensing pressure of test specimens made of composite materials with a fabric reinforcement or other reinforcement structures made of flat textile structures. The method and the device, in particular of the stamp, are suitable for very hard test specimens, the e - module in the order of magnitude of the of the punch material is. Characteristic for the method is that a selection of the punch material takes place in such a way that the e - module of the material of the pressure stamp the e - module of the test object in a direction transverse to the direction of compressive force in order to not more than 100% exceed. In addition, the punch in its form is advantageously tapered or has a waist stresses in the edge region of the test specimen in order to reduce.