• Komorek, Andrzej

Abstract

The analyses described in this article relate to the impact strength investigations of block bonded joints, dealing with one of its aspects. The authors attempted at estimating the actual deformation energy during the destruction of block samples in impact strength tests. The numerical calculations were completed with experimental testing of the examined cases. The experimental studies were conducted by means of the pendulum hammer, used to examine adhesive joints. During such testing, the energy used to tear off the upper part of the sample, that is the energy lost by the dropping device, is the measure of the impact load strength of a bonded connection. The sample elements were made with steel S235. In order to bond the samples, we used Epidian 57 epoxide resin with Z1 hardener. The results of numerical calculations indicate that the elastic energy of deforming the adhesive joint, the elements of the sample and of the impactor constitute merely a tiny part of the energy lost by the pendulum at the time of the destruction of the sample in experimental testing.

Topics

• impedance spectroscopy
• strength
• steel
• resin