Environmental Chambers Used in Tensometer Test
When I was younger everyone owned a Stretch Armstrong. The purpose of the elastic capabilities for the toy is probably so Mr. Armstrong could have moveable limbs and stretch a bit. However as kids, it was essential to test the limits of our humble stretchy buddy. The goal, which has uncanny similarities to medieval torture techniques, was to pull on Stretch’s arms and legs until our strength couldn’t pull him any further. Stretch would last a few days of this before he finally would tear and spray some weird gel all over the place.
This childhood experiment is very similar to the tensometer test. It seems Stretch Armstrong is not the only one whose elasticity is tested. Materials that will often be made into components for products, such as submarines and airplanes, which will go through what is called a tensometer test in a sealed test chamber. This test is used to determine the amount of stretch a material has when undergoing various amount of strain. This provides information about a material’s tensile and fatigue strength. It will also determine a materials response to varying strains called loads. The tensometer can be equipped with an environmental test chamber. This would be for testing Young’s Modulus at different temperatures or humidity.
It is very important for engineers to be very careful during the cutting process. If there are defects created in the cutting process it could skew the test results. This will lead to premature failures and defects in the final products. That can be very dangerous for an airplane or submarine that experience extreme changes in atmospheric pressure. The same problem can occur if rivets and metal sheeting are poorly produces and fail after repeated exposure to stress. I’d feel a lot safer riding on a plane knowing the tensometer testing was done properly.