The variation of the specimen geometry, the hydrostatic pressure state, the equivalent strain and the dislocation density were examined by numerical simulations.
As raw data obtained from electron probe microanalysis (EPMA) come in the form of relative quantities of elements, the aim of the processing is to obtain the absolute variation of the specimen's chemical composition in the degraded zone and consequently to allow a better understanding of the degradation mechanisms by the aggressive environment under consideration.
IR investigations revealed a global temperature variation of the specimen due to crack formation and propagation mechanisms, which is similar to common engineering metals, i.e. surface temperature rises quickly in an initial phase, then it reaches an almost constant value, and finally it increases rapidly as a consequence of the fatigue crack growth.
The semiquantitative scoring by the investigators had a low observer variation; 92% of the specimens were categorized identically.
In our proficiency testing, variation of individual specimens was not the point of interest, but analysis of the other two factors, Harvest and ELISA was of importance.
Figures 17 and 18 depict the variation of the rebar strain in the specimens strengthened with bonded and unbonded strand, respectively.
Since variation of E T with the increase of the deformation density is an adequate reflection of variation in the density of defects of the specimens' crystalline structure, the nonmonotonous variation of E T = f dependencies must be an indication of nonmonotonous variation of the defect density in the specimens.
According to the variation of the fatigue ductility of the specimen before and after LSP, a unified damage-healing model is proposed during the damage-healing process for copper specimens.
At low crack density the failure resistance variation is more significant than the variation of the stress state in the specimen, the latter becoming dominant at high crack density.
It was shown that the measured adhesion was independent of crack length and robust against variation of the initial alignment of specimen.
