LW Finder provides accuracy and control when using strain gauges to measure structural loads. It finds the best locations to place strain gauges and predicts measurement error.
LW Finder is for structures which are expected to have a relatively linear relationship between load and measured strain. The Extra Errors module provides additional support for structures with non-linear and uncalibrated effects, such as plastic deformation.
When using strain gauges to measure structural loads, it is often difficult to know where to place the gauges in order to minimize the measurement error. This is especially difficult when the structure is complex and subjected to several different load cases. The software finds the best locations to place strain gauges and predicts the measurement error. This results in higher quality load data and fewer repeated tests.
LW Finder is able to compensate for non-linear behavior in the structure and can be configured to take into account the properties of an individual strain measurement setup.
Additionally, the software allows the user to prioritize the load cases which should have minimum error, and selects gauge locations accordingly. Finally, the error prediction allows the engineer to know ahead of time if the test will give data of sufficient quality. This means better risk management and fewer disruptions to the project schedule due to unexpectedly bad test results.
Example of a bracket to be measured with strain gauges
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