Monofilament orientation degree measuring device and method based on zero-cross detection method
A zero-crossing detection and measurement device technology, applied in the direction of using sonic/ultrasonic/infrasonic waves to analyze solids, can solve the problems of expensive instruments and unsuitable industrial applications, and achieve the effects of convenient operation, reduced measurement costs, and reduced measurement errors.
Pending Publication Date: 2018-06-22
JILIN UNIV
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X-ray diffraction measurement results can only be used for comparison and qualitative measurement, and the required equipment is expensive, not suitable for industrial applications
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Embodiment
[0049] The monofilament orientation measurement device based on the zero-crossing detection method is composed of a sound signal propagation device and an electrical signal processing device. The structure of the sound signal propagation device includes a horizontally arranged rod-shaped scale base 7 with scales in the axial direction, The scale range is 0-1m, the two ends of the scale base 7 are fixed with vertical rod-shaped sample fixing brackets 8, and each sample fixing bracket 8 has a fixing clip 5 at the top, and the fixing clip 5 is composed of two sound-absorbing thin pads 9 and a metal clip 10. There are two vertical ultrasonic sensor supports 6 between the two sample fixing supports 8 at both ends, and the two ultrasonic sensor supports 6 are all movably installed on the scale base 7, and the two ultrasonic sensor supports 6 can be moved along the scale base 7. Axial sliding, the structure of two ultrasonic sensor supports 6 is identical, is the rod-shaped support t...
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The invention provides a monofilament orientation degree measuring device and method based on a zero-cross detection method. The measuring device consists of a sound signal propagation device and an electric signal processing device, wherein the sound signal propagation device comprises a weight, an ultrasonic sensor, conductive metal, a fixing clamp, an ultrasonic sensor support, a scale base anda sample fixing support; the electric signal processing device comprises a power source, a power converter, a drive level generator, a drive level processor, a signal process, a signal collector, a data processor and a display. The measuring method measures the monofilament orientation degree with the zero-cross detection method, uncertainty caused by signal reflection to measurement in traditional methods is avoided, and the measurement accuracy and stability are improved. The orientation degree of any filamentous macromolecular polymers can be measured, the nondestructive measurement methodis adopted, nondestructive detection of the monofilament orientation degree is realized, the sample consumption is reduced, and the measurement cost is reduced.
Description
technical field [0001] The invention belongs to the field of measurement control, and in particular relates to a single-filament orientation measurement device and a measurement method based on a zero-crossing detection method. Background technique [0002] Monofilament is a single filament with a small count produced by a single-hole spinneret in chemical fiber production, and is widely used in production and life. The degree of orientation means that when the polymer material is subjected to external forces during processing and manufacturing, the polymer chains will be arranged in a certain degree of order along the direction of the force, and the degree of orderly arrangement is called the degree of orientation. The degree of orientation of polymer materials is different, and the properties such as strength and hardness are different. Therefore, it is necessary to measure the degree of orientation. [0003] At present, there are mainly optical birefringence method, infr...
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IPC IPC(8): G01N29/07
CPCG01N29/07
Inventor 李宝华张广鹏季春秋张庆玲王忠新高咏朴盛华刘文杰赵格格
Owner JILIN UNIV