METHOD AND APPARATUS FOR DAMAGE MEASUREMENT USING A PRESSURE DIFFERENCE

摘要

PURPOSE: A method and an apparatus for damage measurement using pressure difference are provided to enable easy measurement of the damage level of a test material using the pressure of a corrosive gas as a mechanical load. CONSTITUTION: An apparatus for damage measurement using pressure difference comprises a gas chamber(100), a thin plate specimen fastener(140), a communication pipe, a first pressure meter(151), and a second pressure meter(152). The gas chamber is formed with an inlet port(101) connected to an inlet pipe(110) formed with an inlet valve(112). The gas chamber is formed with an outlet port(102) connected to an outlet pipe(120) formed with a minute outlet valve(122). The thin plate specimen fastener airtightly fixes the boundary surface of a thin plate specimen(200). The thin plate specimen fastener divides into the first gas fill volume and the second gas fill volume. The thin plate specimen fastener is installed in the inner wall of the gas chamber into the shape of a ring. The one end of the communication pipe connects to a first gas space(100-1). The other end of the communication pipe includes a flow metering valve. The first pressure meter connects to the first gas space. The second pressure meter connects to the second gas space.