El confesor real en la Castilla de los Trastamara: 1366-1504

The knowledge about the figure of royal confessor has been, until recent times, very limited for the period of medieval Castile. A lot of studies have been done for Modern Age, when the institution of the kinǵs confessor played an important role in the Court of the Hispanic Crown. It is evident that this figure didńt appear ex nihilo in the Sixteenth Century and there existed some origins. Many historians mentioned some medieval confessors in their studies about any other subjects. Actually, it was not clear if those clerics could be properly considered as confessors. Our first aim has been to find all the references which exist in the sources and bibliography about kinǵs confessors in the Middle Ages and verify their nature as confessors. We fixed the beginning of the period of study with the reign of Enrique II, and its end with the death of Isabel I in 1504. The main reason is the fact that both sovereigns are the first and last monarchs of Trastamara dinasty, a very significant period in the origin of Modern State in Castile. The Church was an essential element in this process, on account of the service which many clerics enlisted to the Crown in different tasks (diplomacy, bureaucracy, Counsel and Counselling, etc.) and their ideological support to this endeavour. In this context, the royal confessor could perform an important work as personal advisor and a loyal subject to the person of the king in so many activities. This is well-known for Modern Age and also fort the reign of transition between this period and the precedent: the period of Catholic Kings. But it isńt for the times backwards...

Surface irregularity factor as a parameter to evaluate the fatigue damage state of CFRP

This work presents an optical non-contact technique to evaluate the fatigue damage state of CFRP structures measuring the irregularity factor of the surface. This factor includes information about surface topology and can be measured easily on field, by techniques such as optical perfilometers. The surface irregularity factor has been correlated with stiffness degradation, which is a well-accepted parameter for the evaluation of the fatigue damage state of composite materials. Constant amplitude fatigue loads (CAL) and realistic variable amplitude loads (VAL), representative of real in- flight conditions, have been applied to “dog bone” shaped tensile specimens. It has been shown that the measurement of the surface irregularity parameters can be applied to evaluate the damage state of a structure, and that it is independent of the type of fatigue load that has caused the damage. As a result, this measurement technique is applicable for a wide range of inspections of composite material structures, from pressurized tanks with constant amplitude loads, to variable amplitude loaded aeronautical structures such as wings and empennages, up to automotive and other industrial applications.