The second group of methods includes standard or original methods for determining the strength of materials or energy and force criteria for crack resistance. There are quite often methods for determining the degree of self-healing of matrices based on standard methods of stretching, bending [21], and the Single-Lap Shear Test [22]. Specific research methods include the Double Cleavage Drilled Compression (DCDC) method [23; 24]. With this method, a rectangular sample with a through hole is subjected to compression. During the experiment, a load diagram is recorded, from which the stress required to propagate the crack is calculated. This method allows determination of crack resistance, but due to the complex stress state of the matrix sample, it is difficult to correctly determine the crack resistance parameters (e.g., G or K). As mentioned above, the use of absolute, in this case, specific characteristics makes it difficult to compare materials obtained by different researchers. An approach for determining the crack resistance of matrices with a self-healing effect is shown in [17]. The authors used the physically understandable Griffith coefficient G\({}_{\text{IC}}\) as criteria for crack resistance, which is determined on matrices samples with an applied crack using the Single End Notched Bending (SENB) method in the quasi-static and dynamic loading options. At the same time, the authors use a rather complicated technique for applying the initial crack and its healing. However, the authors were able to obtain fracture toughness values with low data scatter. In a number of works, the authors study the flow reactions of DA by thermophysical and rheometric methods [25; 26]. However, the authors do not determine how fully the process of self-healing of the matrix proceeds. To evaluate fiber-reinforced polymers, methods for determining the strength characteristics or crack resistance parameters are mainly used [19; 27]. Some works demonstrate the possibility of obtaining reinforced plastics based on self-healing binders [12]. For example, in [19], the authors study glass fiber reinforced plastics based on a self-healing matrix. Interlaminar fracture toughness mode II (\(\mathrm{G_{IIC}}\)) by the End Notched Flexure method and interlaminar shear strength by the Short beam Shear method were defined as effectiveness criteria. At the same time, the method for determining the value (\(\mathrm{G_{IIC}}\)) turned out to be more sensitive to the effects of material recovery compared to the Short beam Shear method. In [27], carbon plastics were investigated by splitting a double-cantilever beam. The binder with the self-healing effect was introduced only into the middle layer of the sample. The criteria used were the values of the property (the damage area) prior and after the healing process, respectively. The authors determined the Griffith crack resistance parameter \(\mathrm{G_{IC}}\), but it was not measured again after the carbon plastic was healed. In addition, the introduced layer of self-healing binder can be thicker than in the rest of the material, which can increase the efficiency of material healing due to more complete contact of the self-healing matrix and reinforcing fibers. Thus, we can conclude that expanding the capabilities of standard research methods and developing new approaches to testing polymeric materials with a self-healing effect is an urgent task. It should be taken into account that the criteria determining the effect of restoring the properties of materials must be understandable from the point of view of physics and be sensitive to changes in the structure of the material at the micro and macro levels. In the presented work, studies of carbon plastics based on a matrix with thermoresible bonds were carried out using the methods of dynamic mechanical analysis and delamination of a double-cantilever beam. The developed methods will expand the tools for researching reinforced plastics based on such matrices.