A kind of fabric covering deformation characteristic tester
A tester and covering technology, applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of low test accuracy, poor repeatability, cumbersome test process, etc., to achieve accurate test, compact and reasonable structure , the effect of simple operation
Active Publication Date: 2016-11-09
战强
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Problems solved by technology
J. Sirtautas, A.K. Pickett, P. Lépicier. A mesoscopic model for coupleddrape-infusion simulation of biaxial Non-Crimp Fabric [J]. Composites: Part B, 2013, V47: 48-57. Introduced by J. Sirtautas et al. A test device for fabric covering deformation characteristics, the test device is simple in structure, the test process is cumbersome and the test accuracy is not high
S. Bel, N. Hamila, P. Boisse, et al. Finite element model for NCF composite reinforcement preforming: Importance of inter-ply sliding [J]. Composites: Part A, 2012, V43: 2269-2277. Introduced by S. Bel A test device for fabric covering deformation characteristics adopted by et al. The structure of the test device is too simple, the test steps are cumbersome, the test accuracy is not high, and the repeatability is not good
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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[0019] Such as figure 1 As shown: the tester box 1 is placed on the ground through the supporting feet 23, the sample holder 10 is fixed above the tester box 1, the top of the motor base 5 is fixedly connected to the lower surface of the sample holder 10, and the motor 2 is installed At the lower end of the motor base 5, it is connected with the lead screw 6 through the shaft coupling 3, and the lead screw 6 passes through the support base (2) 9 fixed on the lower surface of the sample holder 10 and the support frame fixedly connected to the motor base 5 (1) 4 realizes double-end support, the lead screw nut 7 is connected with a slide plate 8; the sensor mount 18 is fixedly connected to the lower surface of the sample holder 10, and two photoelectric sensors 17 are respectively fixedly connected to the two ends of the sensor mount 18 , corresponding to the two limit positions of the slide plate 8, the light shield 16 is fixedly connected to the slide plate 8, and when the slid...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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The invention provides a fabric draping deformation property testing instrument. The fabric draping deformation property testing instrument comprises a hemisphere ejection mechanism, a sample saddle, a pressing mechanism, a limiting device, a control box and a computer; the fabric draping deformation property testing instrument can be used for testing the fabric draping deformation property; when the draping deformation property of a fabric sample is tested, the fabric sample is placed above the through hole of the sample saddle; the pressing mechanism is adopted to press the periphery of the fabric sample; in the circumstance of without destroying the fabric sample, deformation is allowed; the hemisphere ejection mechanism uniformly ejects the fabric sample from the underneath of the fabric sample center according to the speed set in the computer; the fabric sample is enabled to form a draping surface along the external profile of a semi ball head; through auxiliary tools ( a camera, a measuring scale and the like), the draping surface information is collected and effective data is acquired; the computer is adopted to conduct treatment and analysis; quantitative characterization is conducted on defects that occur after the fabric draping; therefore, a reference is provided for optimizing forming process of fabric parts and improving the forming quality of the fabric parts.
Description
technical field [0001] The invention relates to a test instrument, in particular to an instrument for testing the drape deformation characteristics of different types of fabrics. Background technique [0002] At present, fabrics are increasingly used in the preparation of complex-shaped parts in the fields of aviation, aerospace, automobiles, and ships. overmolding. During the laying and molding of fabrics, affected by many factors, it is easy to have laying defects such as fiber misdirection, gaps and wrinkles, which will seriously affect the final molding quality of the parts. However, there is still a lack of such testing instruments at present, which restricts Application and development of fabric products. Therefore, it is necessary to develop a fabric draping deformation characteristic tester, which can test the fabric draping deformation characteristics before the fabric parts are manufactured, and provide reference for optimizing the forming process parameters of f...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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IPC IPC(8): G01N3/12
Inventor 战强张印
Owner 战强