Testing actuators that move control surfaces like wing flaps, deploy landing gear, and more.Įvery kind of vehicle undergoes extensive testing during development. Torque and power measurements on rotating/spinning components such as fans, turbines, and more. Strain gage testing ensures that wing flexure is within critical specifications.įuselage stress and strain are due to both mechanical forces and changes in outside and inside pressure.Ĭritical structures like engine mounts are tested to ensure against critical failures. Wings - much as tall buildings and bridges are meant to flex when subjected to external forces, aircraft wings are designed to bend as well. These include control surfaces like flaps that allow the pilots to steer the airplane in three dimensions and actuators that control things like the landing gear.Įvery load-bearing structure in an aircraft must be tested for stress and strain, including: People think first about the engines when it comes to flight safety, but there are numerous other components that must also perform flawlessly, day in and day out. Aircraft are also tested at regular intervals to ensure that they are structurally sound. Rigorous testing is required during development and certification. Of course, airplanes must be made as safe as possible. Printing presses use strain gage systems to ensure paper alignment Proper tensioning in paper mills is critical to paper production and minimizing downtime and production loss Strain gages are used to test critical valves in nuclear power plantsĬonveyor belt and conveyor track system monitoring. Residual stress testing on the cast and welded parts
Very small strain gages are used to measure stresses on printed circuit boards Torque measurement testing on shafts and other rotating equipment Measuring the stresses on wind turbine blades, nacelles, and the towers themselves. Torque and power measurements on drive shafts of all kinds, in power plants, refineries, fans, turbines, and more. They are loaded into a hopper which weighs them and divides the overall weight by the item’s per unit weight in order to calculate the quantity.
Items with identical weights such as screws, nails, et al, are often counted by their weight. Silos that empty their contents into trucks or train cars use strain-gage-based sensors on the silo itself that measure the weight of the contentsĬrushing machines use strain gages to detect stress spikes and shut down the machine if a jam has happened before the machine becomes damaged Weighing systems in manufacturing environments Industrial production line Weighing systems: Whole books have been written about this subject.
the physical gluing or bonding it to a surface, is critical to getting a good measurement. The proper application of a strain gauge, i.e.
Strain gages are also found at the heart of load, force, and pressure transducers, such as load cells and force transducers. It’s a fundamental requirement of product testing and is crucial not just for product reliability, but for public safety. We need to know how much and when a structure will bend so that we can ensure that it will work properly under real conditions. The DAQ system digitizes the conditioned signal, displays it on a screen, and records it to disk.ĭAQ systems designed to handle strain gages often have at least eight channels, and sometimes into the hundreds of channels in large-scale testing applications. The output of a strain gage is routed to a specialized signal conditioner that powers it, provides controls for “balancing” it before each test, and amplifies its small voltage output to one more suitable for digitizing.
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