A method for manufacturing a dumbbell-shaped micron fiber tensile sample with controllable gauge length
A micron fiber and tensile sample technology, applied in the field of fiber tensile test, can solve the problems of low accuracy, inaccurate calculation of elongation in deformation zone, low material elongation and tensile strength, etc.
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specific Embodiment approach 1
[0027] Specific Embodiments 1. In this embodiment, a chemical corrosion process is used to manufacture a dumbbell-shaped micron fiber tensile sample with controllable gauge length, and the processing object is NiTi fiber. Specifically, it is carried out according to the following steps:
[0028] Step 1. Clean the fiber with absolute ethanol for 3 minutes under the condition of ultrasonic power of 300W and frequency of 30KHz, remove the oil and dust on the surface, put it on a clean filter paper, put it in a drying box, and heat it at 50°C 5min, remove the organic solvent on the surface;
[0029] Step 2, using a corrosive agent to chemically corrode the middle part of the fiber;
[0030] Step 3. Then remove the corrosive agent, quickly wash with distilled water, and then use absolute ethanol to ultrasonically clean for 3 minutes under the condition of ultrasonic power of 300W and frequency of 30KHz. After heating for 5 minutes, a dumbbell-shaped micron fiber tensile sample is ...
specific Embodiment approach 2
[0039] Specific embodiment two, this embodiment adopts the electrochemical corrosion process to manufacture the dumbbell-shaped micron fiber tensile sample with controllable gauge length, and the processing object is graphene-reinforced aluminum-based composite fiber, specifically according to the following steps:
[0040] Step 1. Clean the fiber with acetone for 10 minutes under the condition of ultrasonic power of 400W and frequency of 35KHz to remove surface oil and dust, put it on a clean filter paper, put it in a drying oven, and heat it at 80°C for 5 minutes. Remove organic solvents from the surface;
[0041] Step 2, using a corrosive agent to perform electrochemical corrosion on the middle part of the fiber;
[0042] Step 3, then remove the corrosive agent, quickly wash with distilled water, and then use acetone to ultrasonically clean for 10 minutes under the condition of ultrasonic power of 400W and frequency of 35KHz, put it on a clean filter paper, put it in a dryin...
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