Final thesis is focused on the area of testing bonded joints. In particular, the design methodology of testing bonded joints at different angles of inclination of the wood fiber. The first part discusses issues of bonding, adhesive joints, their testing and properties of wood in terms of the material being bonded. The second part will describe production of samples, the test methodology and the load pattern. The third section is devoted to the evaluation of the test results, and selecting the most appropriate methodology for testing. In the fourth section, we selected verification methodology for samples of varying cross-section. The final section is precisely described the proposed methodology, size and sample preparation and testing procedures and evaluation of results.