On-line detection method of thermal deformation of mold in autoclave process

Abstract

The invention relates to an on-line detection device for thermal deformation of an autoclave process mold, which includes an optical fiber outlet, an optical fiber, and a modem; the optical fiber outlet is arranged on the wall of the autoclave, and one end of the optical fiber is connected to The other end of the tested mold placed in the inner cavity of the autoclave passes through the optical fiber outlet and is connected to the modem; the optical fiber includes a test optical fiber and a temperature balance optical fiber. The present invention also relates to an online detection method for autoclave process molds, comprising the following steps: sticking one end of the optical fiber to the measuring point of the mold to be tested; leading the optical fiber from the inner cavity of the autoclave to the hot-press The optical fiber outlet on the tank wall; the optical fiber is led out of the autoclave through the optical fiber outlet, and connected to the input interface of the modem; the deformation information of the measuring point on the mold is obtained from the modem.

Description

technical field [0001] The invention relates to an on-line detection device for the thermal deformation of a hot-press pot process mold. [0002] The invention also relates to an on-line detection method for the thermal deformation of the autoclave process mold. Background technique [0003] The autoclave process is the mainstream process of high-precision curing molding process for large-scale composite materials at present. The curing molding mold is an important part of the autoclave molding process, and its profile size accuracy, profile temperature uniformity and thermal deformation are all factors The key factors affecting the dimensional accuracy of autoclave composite materials construction. At present, the autoclave process molds are mostly made of steel with low thermal expansion coefficient. As the size of composite material components increases day by day, the size of the mold also increases accordingly. Moreover, the curing temperature of the raw materials for ...

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Problems solved by technology

[0006] However, due to the high brittleness of fiber gratings, the technical problem of how to lead the optical fibers from the high-temperature sealed autoclave to the signal modem has not been well resolved, resulting in the fiber grating method has not been successfully applied to composite materials. Deformation Detection of Mold in Autoclave Forming Process

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