We perform measurements and install sensors to monitor parameters critical to the health and well being of buildings, bridges, tunnels and other structures during and after construction. Typical measurements include stress, strain, vibration, temperature, deflection, displacement and tilt. Sensing Systems personnel have performed over thirty Structural Integrity Tests in Containments buildings around the United States.
Sensing Systems has developed special sensors to be used in the construction industry for field projects where no existing device is commercially available. Examples include soil pressure sensors to measure the pressure applied by settling or moving soil over time. Our “Sister Bar Sensors” are reinforcing bars instrumented with strain gages to measure strain/stress in reinforced concrete structures over time. In several projects we have removed and instrumented existing components, calibrated them in the laboratory and re-installed them prior to field testing
The accuracy of field measurements varies according to the sensors being used. For most sensors that have been calibrated in the laboratory and installed in the field, accuracies in the range of 0.1 % to 1 % of full scale are typical. Strain and stress measurements require sensors such as strain gages which depend on the installation material for their accuracy. Field accuracies range from 3% to 5% of full scale.
Sensing Systems has pioneered the use of in-situ calibrations for strain gage measurements. We design and manufacture the required fixtures and apparatus to apply a known load to the structure and measure the corresponding output. Using this approach the accuracy may be improved to 0.5% to 1% of full scale.
Sailing vessels convert wind energy into movement. This energy transfer requires sails, hull and rigging working together to accomplish the task. The efficiency of this process depends on the configuration and adjustment of its components. Our sensors provide measurements that can be used to properly adjust the vessel’s rigging configuration.
Sensing Systems has been awarded US Patent No. 6,543,296 for Turnbuckle Sensors. These sensors are used to accurately measure loads in shrouds and backstays in sailboats standing rigging. In addition, tangs, backstay adjusters, chain plates, rod rigging and just about any rigging component can be instrumented to measure loads. Masts can be instrumented to measure the compressive load applied by rigging components as they are adjusted to ensure accurate and repeatable settings.
Benefits derived from measuring rigging loads include:
All our sensors may be incorporated into existing electronics or may be supplied with their own signal conditioning and display units.
Sensing Systems has developed unique and innovative methods and procedures under challenging conditions in the construction, steel manufacturing. and wood processing industry. If you have a unique need, contact one of our qualified specialists! We’ll be glad to answer any question you may have. Just send us an email, give us a call or fill out the form above.