Counting Procedures Option
 As
well as harmonic analysis by means of Fourier transformation, counting
procedures have proved to be an important tool for examining signals,
in particular for load-time functions. Counting is based on a search
for specific events in the load-time function, e.g. a certain load level
being exceeded or a load alternation of a certain amplitude. For this
purpose, the range of values of the load-time function is divided into
discrete intervals, or classes. Each event found is assigned to a class
and counted in this class.
FlexPro's Counting Procedures option provides you with a broad
spectrum of counting procedures. It includes counting procedures according
to the DIN 45667 standard and the more modern Rainflow counting method.
The DIN 45667 standard dates from 1969 and is oriented towards the technical
counting devices that were available at that time. The Rainflow procedure
has mostly replaced DIN 45667 and provides far better results for applications
such as fatigue testing. The Counting Procedures option includes DIN
45667 procedures for instances where the Rainflow procedure does not
offer an equivalent solution.
Features
- Matrices: Markov matrix and Rainflow matrix in range-mean
format and fromto format. The residue of the rainflow count can optionally
be included into the result.
- Range filter:To suppress small load changes.
- Class divisions: Automatic, start and width of class,
begin and end, symmetrical or via external data set.
- Derived collectives: Peaks and troughs, positive
and negative ranges and range pairs, positive and negative level crossings.
- Frequencies: Absolute, relative, percentage and cumulative.
- Counting procedures according to DIN 45667: Sample,
maximum value and time-at-level.
- Compound counting procedures according to DIN 45667:
Sampling, maximum value and dwell time-at-level from two input data
sets with separate class division for each data set.
To purchase this FlexPro option,
click
here or contact your local Adept Scientific
office. |
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