Strain gauge testing may be used to measure static strain due to relatively constant loads such as pressure or thermal expansion.
Strain gauges may also be used to measure dynamic strain due to transient events or vibration. Information from gauge measurements is useful for validation of finite element analysis (FEA) models, establishing more accurate operating loads and failure investigations.
SimuTech Group’s services also include selection of gauge size and type, specification of gauge locations and orientations, strain gauge installation, and recommendations for bonding methods.
Our engineering experts will help your team develop practical strategies for dealing with lead wire paths, connection terminals, clearances and gauge environmental protection, data acquisition and analysis.
Gauge measurements are applicable to a wide variety of structures including industrial equipment, turbomachinery, aircraft, piping, automotive components, and electronics.
Recent strain gauge measurement applications by SimuTech include automotive radiators, a helicopter airframe, a forging press, a bridge truss structure, and a high-pressure gas main.
Strain gauges are ideal for verifying stress and displacement simulation models. The strain gauge measurements are taken at specific locations and correlated with the simulation results.
Modeling assumptions such as boundary conditions, contacts, and loads may be updated to make the simulation better fit the observed behavior.
Once the model accurately reflects the measurements, more detailed information about the system can be inferred.
In addition, simulations of the modified system can be used to predict behavior with confidence.
SimuTech Group specializes in both strain gage measurement as well as simulation, allowing seamless support when conducting investigations.
For new, refurbished, or reverse engineered turbine blades (buckets) to ensure that natural frequencies are within specifications.
Determine the natural frequencies and mode shapes of a rotor train as it twists about the axis of rotation.
Identify the root cause of noise and vibration problems in machinery via ODS, spectral, order tracking or joint time frequency analysis.
Strain Gage selection may appear to be a simple task with little significance for the stress analysis, but this is far from the case. Learn why.
The strain-sensitive alloy employed in the foil grid is critical in determining a strain gage’s working properties. Learn the benefits and utility of each alloy type.
Strain gages come with two types of backing materials, along with corresponding alloy combinations, unique manufacturing features, and created as micro-systems.
So, you’ve determine a need for strain gage testing. Now, a choice must be made via available gage systems, each of which includes unique design features and construction aspects.
Considerations for the Strain Gage Series selected must include that of specific test profiles, such as strain type, operating temperature, measurements duration, and more.
When possible, the gage length should be no more than 0.1 times the radius of a hole, fillet, notch, or corresponding dimension of any other stress raiser. Learn why.