The document discusses corrosion and aging of structures. It describes aging as the process by which materials lose quality over time due to interactions with the environment and use. Corrosion and fatigue mechanisms deteriorate materials and accelerate aging. Inspections, measurements, statistics, corrosion mapping, and performance assessments are used to monitor aging and estimate the remaining safe life of structures. The results of these analyses can predict future material behavior and anticipate failures to support maintenance programs that extend structure lifetimes.

1. Corrosion and aging of the structures
commonly thought of aging time by which a material loses caracteristicasde quality, defining
quality as the "degree of fitness of a good or service to satisfy the needs and desires of consumers
the corrosion process must be related to the mechanism of aging, when after some time and since
the beginning of the interaction with some kind of fatigue that can happen as a result of the use of
the mechanical part, element, component or structure as cyclic or repetitive, including a structure
that supports its own weight; synergistically material deteriorates so to surface problems that can
even come from the same manufacture, through treatments that have been made either at
surface or surface sud such as heat treatment, dives to apply metal, machined and even coatings
surface preparations as can accommodate mechanically affect their internal intentions by
inclusion or by modification of the thickness on time affect the material once the material
properties begin to wane when determined by flow corrision reactions and the effect of material
fatigue
corrosion process involves interaction with the environment, where chemical reactions are
required to generate or electronic corrosion products, which are chemically related to any of the
environmental variables such as humidity, temperature develop, ph (chemical environment), and
others such as those generated by mechanical work to accumulate over time, leading to cycles
within the material which no longer responds to the original elastic behavior of the same effects
that result occur the mechanism of aging, which accelerates the deterioration of the material and
structure has a purpose for which no will longer fit due to a curve with a cadence that leads to the
destruction of the structure by fracture mechanisms.
a way to consider the degree to aging of materials is to monitor THROUGH inspections,
measurements, statistics, analysis of logbook, corrosion mapping and appraisal of performance
based on the natural aging foreseen all the above considerations are to be taken into account for
the elaboration of the aging program of any structure and form its performance criterion, resulting
in the trend of permanent stimulation time useful and safe life of a structure viewed from the
optical capabilities materials that comprise
inspections and procedures are part of predictive maintenance, which nondestructively uses
different techniques to know the state of the material at surface, and volumetric superfial sud or
interior material. The importance lies in the purpose of the inspection, choose ideal technique to
achieve this objective and often you will monitor the characteristics of the material to be
inspected. measurements can be considered as the determination of the remaining thickness of
the material, compliance with tolerance and clearances elements and assemblies; finally,
measurements that establish the condition in which they find as a material or joint structures as a

2. result of your use or mechanical work can undergo changes that lead to the understanding of their
behavior through time
management statistics for purposes of considering the degree of aging in a material or structure is
located, lies in the knowledge base performed, the results of inspections, measurements, repairs
made and the accumulated time use. good management of the statistics generated a trend that
can anticipate future behavior and even the failure that results in accidents
analysis refers to the evaluation of the cluster of events that compliance with maintenance
programs, particularly the recuperative corrections have happened. this assessment generates a
real trend as both the structure behaved materials
corrosion mapping corresponds to the exhaustive inspection of a structure in which all problems
including corrosion defects that are potential corrosion problems that may arise in the future are
related, determining the location and level of corrosion present
mapping should result aging behavior suffered by the materials of the structure
inspections and procedures are part of predictive maintenance, which nondestructively, using
different techniques that provide insight into the state of the material at surface, and volume of a
sud seperficial into the material
performance assessment of comprehensive income refers to the computer of the above items,
which must be included in the program so that aging can be estimated life remanen of materials
and structure, safety and working conditions. the comparison with the lifetime estimated from
design and construction highlights the difference between the natural aging anticipated as a result
of 'selection and strength of materials for construction. and modification of aging dad for use