Using The RS-200 And Residual Stress Gages As A Quality Control Tool On The Production Line.
The demanding aerospace industry requires large scale monolithic components to provide strength and rigidity in critical locations in the airframe. For example, aircraft door frames must be able hold support the door, act as a strong structural feature and maintain its shape to ensure an air tight seal. Such components begin as a forging which is then precision machined to final tolerances.
If the forging has unacceptable residual stresses, the machining operation will result in warpage which causes this very expensive component to be scrapped.
The Micro-Measurements RS-200 Residual Stress Milling Guide ( [ Ссылка ] ) used in conjunction with Micro-Measurements Residual Stress Gages ( [ Ссылка ] ) allows for determination of the residual stress in the forging before additional cost is added during the machining process.
This early detection of unwanted stresses allows for more rapid process adjustments / refinements and reduces scrap rate / cost.
The ASTM E837 hole drilling method is a widely used and accepted technique for determining residual stresses. Micro-Measurements manufactures and sells the RS-200 Milling Guide to support the hole drilling method of measuring strain for the calculation of residual stress.
In this video, Darryl Peterson describes the RS-200 Milling Guide.
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