Device and method for eliminating residual stress of composite material to control curing deformation
A composite material and residual stress technology, which is applied in the field of devices for eliminating residual stress of composite materials and controlling curing deformation, can solve problems such as the inability to achieve residual stress and elimination, and achieve the effects of eliminating residual stress, eliminating curing deformation, and being easy to install
Active Publication Date: 2018-12-18
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
At the same time, for composite components, the residual stress is formed due to the huge temperature difference during the forming process, so heat treatment cannot achieve the elimination of residual stress
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[0043]Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.
[0044] In the absence of a contrary statement, the used orientation words such as "upper and lower" are generally defined by the device for eliminating residual stress of composite materials and controlling curing deformation provided by exemplary embodiments of the present disclosure under normal working conditions, and "inner ", outside" refers to the inside and outside of the contour...
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The invention discloses a device and method for eliminating residual stress of a composite material to control curing deformation, and belongs to the technical field of composite material curing molding. The device comprises a hot-pressing tank and a sample platform arranged inside the hot-pressing tank, and further comprises a mold component arranged on the sample platform. The mold component isprovided with a vibrator and a mold, a composite material component is arranged on the upper portion of the surface of the mold, and an acceleration sensor is arranged on the side face of the mold. The external of the composite material component is covered with a vacuum bag, a sealed mold cavity is formed between the vacuum bag and the surface of the mold, and the vacuum bag is connected with a sealing valve communicating with the sealed mold cavity. The composite material component is formed by first demolding fabric, a first demolding layer, a composite material laying layer, second demolding fabric, a second demolding layer and ventilated felt in upward and successive laying and pasting modes from the surface of the mold, and exciting force and the exciting frequency of the vibrator are adjusted to eliminate the residual stress in the curing process of the composite material so as to achieve the purpose of controlling curing deformation of the composite material.
Description
technical field [0001] The invention belongs to the technical field of solidification molding of composite materials, and in particular relates to a device and method for eliminating residual stress of composite materials and controlling solidification deformation. Background technique [0002] Composite materials are new engineering materials composed of two or more materials with different properties according to certain rules. They have the advantages of high specific strength, high specific stiffness, designability, and light weight. , electronic machinery and other fields have been widely used. Especially in the aerospace industry, advanced composite materials are considered ideal structural materials. [0003] The curing molding of composite materials refers to the process of forming from raw materials to products, which needs to be cured and molded, that is, the resin is transformed from liquid to solid to form a composite with a tight structure of fibers. The moldi...
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IPC IPC(8): B29C70/34B29C70/54
CPCB29C70/342B29C70/54Y02T50/40
Inventor 杨杰彭晓博王成雨钟佳宏刘东
Owner SOUTHWEST JIAOTONG UNIV