A bidirectional compression test fixture for composite laminates
A composite material layer, compression test technology, applied in the direction of analysis materials, instruments, measuring devices, etc., can solve the problems of complex damage mechanism and residual strength prediction, overestimation of the mechanical properties of composite materials with defects, etc., to achieve accurate and reliable test data support , The effect of reducing test cost and convenient disassembly and assembly
Active Publication Date: 2022-08-05
TONGJI UNIV
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, most of the actual aerospace composites work under two-way or multi-directional stress state, and the prediction of load capacity in one direction may overestimate the mechanical properties of defect-containing composites
Due to the anisotropy of the single layer of composite materials, the failure mode of composite materials under complex bidirectional loading is affected by the ratio of longitudinal and transverse loads, resulting in more complex damage mechanism and residual strength prediction of composite materials under bidirectional loading
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0027] figure 1 is the exploded schematic diagram of the bidirectional compression test fixture of the composite material laminate in the embodiment of the present invention, figure 2 It is a three-dimensional schematic diagram of a bidirectional compression test fixture of a composite material laminate in an embodiment of the present invention.
[0028] like figure 1 and figure 2 As shown, this embodiment provides a composite material laminate bidirectional compression test fixture 100 for clamping compression test pieces 10 of different sizes, including a base and a frame.
[0029] image 3 It is an exploded schematic diagram of the upper base body fixed with the upper slider of the composite laminate bidirectional compression test fixture in the embodiment of the present invention, Figure 4 It is a three-dimensional schematic diagram of the upper base body fixed with the upper slider of the composite laminate bidirectional compression test fixture in the embodiment o...
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
Login to View More PUM
Login to View More Abstract
The invention provides a bidirectional compression test fixture for a composite material laminate, which is used for clamping a compression test piece. A lower slider is fixed on the body; and a frame, including a left frame and a right frame arranged between the upper seat body and the lower seat body, and the inner side of the left frame is fixed to drive the left frame to move on the upper slider and the lower slider The left moving slider, the inner side of the right frame is fixed with a right moving slider for driving the right frame to move on the upper slider and the lower slider, wherein the bottom ends of the left frame and the right frame both have concave holes with the lower seat body. The second protruding portion matched with the first protruding portion protrudes downward in the groove, and the distance is adjusted by sliding the left frame and the right frame left and right in the groove of the lower seat body. The fixture of the invention can ensure that the compression test piece can evenly bear the in-plane bidirectional compression load, and is suitable for the bidirectional compression test of the compression test pieces of different sizes.
Description
technical field [0001] The invention belongs to the technical field of fiber-reinforced composite material testing, in particular to a bidirectional compression test fixture for a composite material laminate. Background technique [0002] Fiber-reinforced composites are increasingly used in modern aerospace structures. Only by accurately grasping the basic mechanical properties of composite materials can we make full use of their performance advantages and design advanced composite material structures with better performance. Composite materials have different mechanical properties than metal materials, so it is necessary to study the mechanical response of composite materials under complex stress states. Through the bidirectional compression test of composite laminates, the mechanical response and strength properties of the material under the combined stress state of longitudinal compression and transverse compression can be studied. [0003] The test to determine the mec...
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
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/04
CPCG01N3/04
Inventor 杨斌付昆昆李岩
Owner TONGJI UNIV