Low velocity impacts to fibre reinforced plastic composites cause a pattern of damage consisting in general of delamination, fibre breakage and matrix cracking.
Profits coming from better structural model, use of suitable composite materials and better techniques of manufacturing, both the blades and composite materials, causes necessity of application of numerical modeling and optimization techniques.
Deformation of the polymer composites caused partially reversible decrease of their conductivity characteristics, which could be described mathematically with a power law function of the strain with an exponent being dependable on the type of PU modification.
The FE analysis showed that the introduction of carbide into the C/C composites caused a significant increase of the RTS in the PyC near the carbide, indicating that the carbide could change the RTS distribution in C/C composites.
Drilling of composite material causes damages of different natures.
A brief and in depth review for drilling of composites using finite element method is delivered, which provides a knowledge on damage of the composites caused during drilling and orthogonal cutting.
Increasing the CNT content to 0.5 and 0.75 wt% led to slight decreases of maximum reflection loss values, which was due to the increased reflectivity of the composites caused by CNT clustering.
It is evident that in case of intensive interaction with components of composite, strontium causes a degradation of crystalline structure, leads to the decrease of inter plane distances and, accordingly, decrease of volume of BHA elementary crystal cell.
The primary endpoints were major adverse cardiac events (MACE), including a composite of all cause-of-death, myocardial infarction, target lesion revascularization, and coronary artery bypass graft after 1-year clinical follow-up.
The primary endpoints were major adverse cardiac events (MACE), including a composite of all cause-of-death, myocardial infarction, target lesion revascularization, and coronary artery bypass graft during the 12-month clinical follow-up.
