Method for evaluating the deterioration of diffuser membranes for diffusers.

Abstract

To provide a method of evaluating deterioration of diffuser membrane of an air diffuser device, which enables evaluation of remaining service life of the diffuser membrane even if a material of the diffuser membrane is less susceptible to aging.SOLUTION: A method of evaluating deterioration of a diffuser membrane of an air diffuser device according to the present disclosure comprises a measurement step of measuring tensile strength and thickness of the diffuser membrane, and an evaluation step of evaluating remaining service life of the diffuser membrane using a device yield strength, defined as a value obtained by multiplying the tensile strength and the thickness measured in the measurement step, as an indicator.SELECTED DRAWING: Figure 4

Claims

[Claim 1] In a method for evaluating the deterioration of diffuser membranes used in diffusers, A measurement step for measuring the tensile strength and film thickness of the aforementioned diffuser film, The device strength is defined as the value obtained by multiplying the tensile strength measured in the measurement step by the film thickness, and the remaining service life of the diffuser film is evaluated using the device strength as an indicator. In the measurement step, the tensile strength and the film thickness are measured at least twice. A method for evaluating the deterioration of an aeration film for an aeration device, wherein the evaluation step involves determining a correlation between the device's strength and time from at least two measurements taken in the measurement step, determining the time at which the device's strength reaches a predetermined standard value from the correlation, and evaluating the remaining service life up to that time.

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