High-speed experimental device and experimental method for testing interlayer bonding properties of prepreg
An experimental device and bonding performance technology, applied in the direction of measuring devices, mechanical devices, and analyzing materials, etc., can solve the problems of inability to combine with actual laying, high manufacturing costs of devices, and low measurement accuracy, so as to achieve convenient design, The effect of simple structure and less manpower time investment
Active Publication Date: 2017-06-06
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology
[0004] The current experimental device for measuring the bonding performance between prepreg layers has the disadvantages of low device speed, low measurement accuracy, high device manufacturing cost, and inability to combine with actual laying.
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Embodiment Construction
[0030] In order to clarify the technical solution of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0031] Such as figure 1 and figure 2 As shown, a high-speed experimental device for testing the bonding performance between prepreg layers, including two unwinding devices 1, two roll guiding devices 2, heating devices 3, stripping devices 4, measuring devices 5 and two pulling devices device 6, and all devices are fixed on the mounting frame 8.
[0032] The discharge device 1 is composed of a tray, a shaft shoulder, a retaining ring and a nut, and the roll guiding device 2 is composed of a steel roller with ribs; the heating device 3 is composed of an infrared heating lamp, a pressure regulating Connector, voltmeter, ammeter, temperature display, thermal resistance, PLC controller and rotary encoder.
[0033] Such as image 3 As shown, the peeling device 4 is composed of...
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A high-speed experimental apparatus for testing prepreg interlayer bond performance is provided and is mounted on a mounting rack. The high-speed experimental apparatus is characterized in that the high-speed experimental apparatus comprises two experimental device groups arranged symmetrically; each experimental device group comprises a material feeding device and a traction device; a stripping device is disposed between the two traction devices; a heating device used for heating a prepreg to be tested is disposed under the stripping device; a side of the stripping device is provided with a measuring device; the measuring device comprises a support; a tension detecting roller and a tension sensor are installed on the support; the high-speed experimental apparatus is simple in structure; the two traction devices are arranged in a centrosymmetric manner; and the high-speed experimental apparatus is convenient in design, convenient in operation, low in labor time investment and saved in cost. An experiment process is more approximate to actual pavement. The speed, temperature and pressure are approximate to that of actual pavement situations, so that error between the measuring result of the prepreg interlayer bond performance and an actual situation is smaller.
Description
technical field [0001] The invention relates to the technical field of automatic laying of composite materials, in particular to an experimental device and method for measuring the bonding performance between prepreg layers in a simulated automatic laying process. Background technique [0002] The automatic placement technology utilizes the numerical control system to realize the integration of processing capabilities such as automatic placement, compaction, shearing and refeeding of prepregs. It is one of the most automated and digitalized low-cost composite material manufacturing technologies in the world. The rapid development of automatic laying technology in the aerospace field has accelerated the pace of research on laying material systems and process technologies. [0003] Prepreg is the raw material for automatic placement and the basis for the development and application of automatic placement technology. The high-speed forming characteristics of automatic lay-up t...
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IPC IPC(8): G01N19/04
Inventor 还大军李勇王敏肖军
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS