Microscale positioning holder for bending fatigue of fixed point of single fiber
A bending fatigue and single-fiber technology, applied in the field of holding devices, can solve the problems of unmeasured and large errors, and achieve the effect of simple method and flexible operation
Active Publication Date: 2012-05-09
DONGHUA UNIV
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Problems solved by technology
There has also been some progress in the adaptability of single fiber thickness, but it is only barely suitable for the bending fatigue measurement of single fibers larger than 5 μm in thickness
And the thinner the measured single fiber, the greater the error of the measurement, or it cannot be measured
There is no report on the measurement technology of the fixed-point holding device suitable for the bending fatigue of flexible materials of different scales, especially the precise measurement of the bending fatigue performance of nano-micro-sized (50nm~1μm) single fibers
Method used
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Embodiment 1
[0025] Such as figure 1 As shown, it is a schematic diagram of the structure of the microscale positioning gripper for single-fiber fixed-point bending fatigue, figure 2 As a top view, the micro-scale positioning holder for fixed-point bending fatigue of single fiber includes a rotating disc 1, on which a positioning needle holder 2 is fixed, and each positioning needle holder 2 is embedded with a positioning needle 3 , the front end of the positioning needle 3 is fixedly connected with the micro wire 4, and the single fiber 10 is arranged between the micro wire 4.
[0026] The positioning pin holder 2 is also provided with a positioning pin vertical direction adjusting device and a positioning pin horizontal direction adjusting device. The described device for adjusting the vertical direction of the positioning pins includes a pair of button nails 5 arranged on the positioning needle frame 2, the positioning pins 3 are arranged between the pair of button nails 5, and ea...
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Abstract
The invention provides a microscale positioning holder for bending fatigue of a fixed point of single fiber, which comprises a rotating circular disc, wherein locating needle frames are fixed on the rotating circular disc; a locating needle is embedded in each locating needle frame; the front end of each locating needle is fixedly connected with a micro metal wire; and the single fiber is arranged between the micro metal wires at two sides. When the microscale positioning holder is used for fatigue measurement, fixed-point holding is directly carried out on the micro metal wires and the single fiber to be measured, and compressing and contact holding without a shearing action and centering regulation can be carried out. The holder can be used for measuring the bending fatigue of the single fiber and nanometer single fiber, and the problem that the existing bending fatigue device can not accurately measure or is unable to measure the single fiber with nano-micro thickness (50nm-1mum) is solved.
Description
technical field [0001] The invention relates to a gripping device suitable for fixed-point bending fatigue of micro-scale flexible materials such as single fibers and film materials, belonging to the technical field of precision measurement. Background technique [0002] The single fiber is a soft and slender body with excellent bending fatigue resistance, such as natural, regenerated and synthetic single fiber single fiber. If the single fiber is subjected to bending fatigue, and it is non-fixed-point bending fatigue, not only the experimental results are not representative, but also the experimental results The number of fatigue is astronomical data, so accurate expression must use fixed-point bending action. [0003] High-performance single fiber has excellent tensile properties, high strength and high modulus, but its fibril structure and weak interaction, it is easy to split and fail under shearing, such as Kevlar, PBO aramid single fiber, etc. Therefore, it is necessa...
Claims
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IPC IPC(8): G01N3/04
Inventor 于伟东杜赵群蔡光明吴济宏刘晓艳于昊慧
Owner DONGHUA UNIV