Device and method for detecting shear strength of composite material interface based on laser Raman spectrometer
A technology of interfacial shear strength and Raman spectrometer, which is applied in the direction of applying stable tension/pressure to test material strength, measuring devices, and material analysis through optical means, and can solve the problem of only measuring critical interfacial shear strength and interface Problems such as inaccurate shear strength measurement
Active Publication Date: 2019-07-16
金思宇
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[0005] In order to solve the problems of inaccurate measurement of interface shear strength and only critical interface shear strength in the detection method of fiber-reinforced resin-based composite material interface shear strength in the prior art, the present invention proposes a method based on a laser Raman spectrometer Composite material interface shear strength detection device and method
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[0050] attached figure 1 It is a schematic diagram of the detection device of the present invention performing tensile detection on reinforced fiber monofilaments, with figure 2 It is a schematic diagram of the testing device of the present invention performing tensile testing on a composite material sample. In the figure, 11 is a load-carrying frame, 12 is a sample fixing end I, 13 is a sample fixing end II, 14 is a stress sensor, and 15 is a thousand Sub-scale, 16 is a stress reading display, 21 is a laser head, 22 is a laser beam, A is a fiber monofilament sample, B is a composite material sample, and the direction of the arrow is the stretching direction. As can be seen from the figure, the present invention is based on a laser Raman spectrometer composite material interface shear strength detection device, including a laser Raman spectrometer (not shown), a sample carrying mechanism and a stretching mechanism (not shown); The sample carrying mechanism includes a carryin...
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Abstract
The invention provides an apparatus for detecting interfacial shear strength of a composite material based on a laser Raman spectrometer. The apparatus comprises the laser Raman spectrometer, a sample bearing mechanism, and a tension mechanism; the sample bearing mechanism comprises a bearing framework, a sample fixing end I, a sample fixing end II, a stress sensor, a micrometer for metering, and a stress reading display; the bearing framework is rectangular and is vertically installed under a laser beam, the sample fixing end I is fixedly arranged at the inner side of one end of the rectangular framework, and the sample fixing end II is movably arranged at the other end, so that a fixing mechanism for fixing a sample to be tested is formed; one end of the sample fixing end I is fixed at the inner side of the bearing framework, and the other end is fixedly connected to the sample to be tested by the stress sensor; one end of the sample fixing end II is fixedly connected to the sample to be tested, and the other end traverses the rectangle framework and is connected to the tension mechanism by the micrometer for metering; the stress reading display and the stress sensor are connected electrically. The detection is accurate, and provides basic data for calculating residual stress of a microscopic area on the surface of fiber.
Description
technical field [0001] The invention relates to a technology for detecting the interface shear strength of a fiber-reinforced resin-based composite material, in particular to a device and method for detecting the interface shear strength of a composite material based on a laser Raman spectrometer. Background technique [0002] Fiber-reinforced resin-based composite materials have become the mainstream in many technical fields (automotive industry, wind power generation, rail transit, sports and leisure, home appliances, construction, aerospace and other technical fields) with their unique lightweight effects (high specific strength and specific modulus). technology trends. It occupies an important position in the national economy, and is an industry that is encouraged by the national industrial policy, with huge room for development. In particular, the current automobile lightweight technology is one of the effective methods to save energy and improve driving performance, a...
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IPC IPC(8): G01N3/08G01N3/06G01N21/65
CPCG01N3/068G01N3/08G01N21/658G01N2203/0075G01N2203/0641
Inventor 金思宇
Owner 金思宇