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Consultancy |
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One of the
directions Techno Fysica distinguishes itself from other engineering
companies is consulting. We are able to advise you in many fields of
mechanical engineering, but, of course, our specialism is vibration
behaviour and the effects of dynamic loading. The area of interest are
predicting severity of vibration, life cycle, and reliability. Pitfalls in a
design which is subjected to dynamic loads can be recognized in an early
phase of engineering, and corrected with least effort and cost. The result:
an optimal design with regard to reliability, safety and maintenance.
Comfort due to absence of troublesome or even damaging vibration is another
important aspect. |
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Our
consultancy is applicable in many fields of technical engineering, but
also in many forms. We can take the role is an external advisor. In that
role, can evaluate all engineering aspects of a design with regards to
the aspects related to dynamic loading.
For
example, for the shipping industry,
we have a blue print for evaluating a design with regards to vibration
measurements
of hull and superstructure, vibrations (Lateral, axial and torsional) of
the propulsion installation, but also with regards to life-cycle and
reliability. Our approach is not that of a constructer. We do not "
design" a ship,
a plant or a construction.
We merely
make sure your design does what you expect of it, for as long as you choose
to have it. In fact, we can be the tool the constructor needs to
optimize his design with regards to areas where his expertise is limited
to basic knowledge or, at most, limited experience.
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Examples
are:
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Vibration
calculation for construction elements such as resiliently mounted engine,
pumps, generators and such up to the modal vibrations of complete ship
hulls including superstructure.
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Vibration calculation of
frames and steel constructions.
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Prediction of vibration
behavior by vibration response
calculations.
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Additionally, we can look at the design specifications, and add our
expertise with regards to possible problem areas regarding the dynamic
aspects of a design. Usually, this means extending the amount of testing to
be performed during trials, or scrutinizing material specifications.
In our
experience, a design specification is usually very limited and more often
than not aimed at getting a project through the warranty period. We look
beyond that, and aim our experience at getting the most out of a concept.
Since this leads to lowering of dynamic loads, the overall effect is a
lowering of the Total Costs of Ownership due to lower wear, and larger
reliability.
Of
course, we can make these specifications fit your needs, or perform the
necessary testing or trial programs ourselves. We will gladly help you in
this area.
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Much of
our knowledge is used in the shipping industry, where we have been (and
still are) a standard of our own. However, our experience is well
appreciated in other areas of industry also.
An
example of this is the use of our knowledge in the field of condition
monitoring in Wind
turbine applications. The Danish manufacturer of Wind
turbines, Vestas,
used the expertise of Techno Fysica to start
a, global condition monitoring program.
The
program comprised the selection of hard- and software, determining
important parameters such as measurement intervals and alarm settings, and
training, so eventually the measurement can be performed fully by own
personnel.
What started
as a job for the
off-shore wind
turbines only, it now comprises the total on- and offshore
turbines in the portfolio.
The order
was to
select a system that made it possible to monitor the
dynamic behaviour and machine trending of the drive train (bearings,
gear boxes, generator, and shafting) from a central base.
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The
system was to be
certified by Germanischer Lloyds, which has been done recently.
Further aspects were the selection of suited software and hardware,
including additional options which were not standard items in available
equipment or programs.
Finally, new standards
are to be developed, since the wind
turbine industry is still a relatively young industry, with its own
features and problems.
Needless
to say that this project required
independent, vast and specialized experience in the field of
condition monitoring, which is exactly why Techno Fysica was selected.
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Technically, the challenges
were:
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The large dynamics and transient behaviour of the measured signals.
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The large number of unmanned and remote systems
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Series production, which requires a high degree of
standardization
and
automation
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Very compact design and complex drive train (planetary gear
boxes)
especially
in the case of the older designs: little possibilities with regards to
signal communication
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"Harsh" conditions, such low environmental temperatures, strong winds,
vibrations, lightning
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Use of new techniques such as web based communications, GPRS in the field
of telemetry
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Building the required and desired operational
back-office
structure within an existing organization.
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Developing a unique and close co-operation ship between
Vestas
and Bruel & Kjaer Vibro
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