On-Line Measurement of Fiber Diameters along Spinning Line

2013 ◽  
Vol 333-335 ◽  
pp. 394-399
Author(s):  
Xin Wen ◽  
Sheng Lin Yang ◽  
Guang Li
Keyword(s):  
High Speed ◽  
Polypropylene Fibers ◽  
Laser Sensor ◽  
Measurement Equipment ◽  
Diameter Measurement ◽  
Analog Signals ◽  
Line Measurement ◽  
Typical Experiment ◽  
On Line ◽  
Spinning Speed

A laser sensor based equipment was assembled for on-line measuring the fiber diameters during the polymer spinning. The analog signals come from laser sensor were detected by using a data acquisition instrument and transferred into digital ones, which were processed in time with Labview. In a typical experiment, the diameters of polypropylene fibers were tested under different spinning speed by means of that pre-calibrated on-line measurement equipment, and the testing results were compared with those obtained from the numerical simulation of spinning dynamics. It has been found the on-line diameter measurement could promise high-speed, highly reliable and flexible testing.

On-Line Measurement of Fiber Temperature in the Melt-Spinning Processes

2013 ◽  
Vol 821-822 ◽  
pp. 149-152
Author(s):  
Xin Wen ◽  
Sheng Lin Yang ◽  
Guang Li
Keyword(s):  
High Speed ◽  
Melt Spinning ◽  
Probe Field ◽  
Infrared Thermometer ◽  
Line Measurement ◽  
Measurement Results ◽  
On Line ◽  
Important Means ◽  
Method Of Measurement ◽  
Reliable Temperature

The online temperature detections of fiber along the spinning line should be the important means for the precise controlling of fiber higher order structures as well as fiber-final performance. In this paper, a method of measurement fiber temperature has been introduced which mainly use the instrument of monochromatic infrared thermometer to measure fiber temperature in the melt-spinning processes. Due to the probe field of view of monochromatic infrared thermometer being much larger than the fiber diameter, monochrome infrared thermometers can't be used to measure temperature of fibers directly, the measurement results is an average between the fiber and backgrounds, which can't be used to indicate the temperature of fibers directly and have to calibrated. The calibrated results of monochromatic infrared thermometer are compared to the measurement results of infrared thermography. It has been found that the on-line measurement with infrared thermometer could promise high-speed and highly reliable temperature testing for the fibers.

Anode Electrical Resistance Measurements: Learning and Industrial On-Line Measurement Equipment Development

2014 ◽  
pp. 1269-1274 ◽  
Author(s):  
Guillaume Léonard ◽  
Sébastien Guérard ◽  
Denis Laroche ◽  
Jean-Claude Arnaud ◽  
Stéphane Gourmaud ◽  
...  
Keyword(s):  
Electrical Resistance ◽  
Measurement Equipment ◽  
Line Measurement ◽  
Electrical Resistance Measurements ◽  
Equipment Development ◽  
On Line

In-Process Coating Layer Analysis of Galvannealed Steel Sheets with Monochromatic Incident X-Rays

1991 ◽  
Vol 35 (B) ◽  
pp. 1211-1218
Author(s):  
Hiroharu Kato ◽  
Kiyotaka Imai ◽  
Hideya Tanabe
Keyword(s):  
High Speed ◽  
Coating Layer ◽  
Statistical Error ◽  
Optical Systems ◽  
X Rays ◽  
Steel Sheets ◽  
Line Measurement ◽  
On Line ◽  
Coating Weight ◽  
Galvannealed Steel

AbstractA new method, for the on-line determination of the composition and the coating weight of galvannealed (Zn-Fe-alloy-coated) steel sheets using monochromatic incident x-rays with two optical systems, is described. In the case of galvannealed steel sheets, it is difficult to determine the composition and the coating weight precisely by simple XRF, because fluorescent x-rays of Iron are emitted not only from the coating layer but also from the underlying steel sheets. We have developed an on-line analyzer with two optical systems which are different in incident angles, take-off angles and wavelengths of monochromatic incident x-rays. We determine the composition and the coating weight by solving simultaneous equations of the data which we derive using two optical systems. Using monochromatic x-rays enabled us to obtain high precision with high speed. We considered en-or factors in on-line measurement such as statistical error or fluctuation of the distance between the sensor head and steel sheets. This on-line analyzer has been applied to the continuous galvanizing line in our Fukuyama works successfully. As a result, we have been able to significantly improve product quality.

On-Line Gauge for Wire and Fibre Diameter Measurement

1974 ◽  
Vol 7 (2) ◽  
pp. 45-46 ◽  
Author(s):  
Patricia West
Keyword(s):  
Output Signal ◽  
Size Range ◽  
Fibre Diameter ◽  
Laser Diffraction ◽  
Control Mode ◽  
Absolute Accuracy ◽  
Diameter Measurement ◽  
Line Measurement ◽  
On Line ◽  
Accuracy Of Measurement

A new gauge has recently been developed for on-line measurement of filament diameters in the size range 5–160 microns. The instrument, which operates on a laser diffraction principle, has been designed for non-contacting gauging of wires, filaments and fibres on the production line. It can accept horizontal or vertical wires, and it can readily be moved from one line to another, and used in the laboratory or test bay. The absolute accuracy of measurement attainable is approximately 1% of the diameter of the filament, while the sensitivity of the gauge to changes in diameter is about 0· 2%. The deviation from nominal diameter is displayed on a meter, or can be recorded automatically. It is possible to use the output signal from the instrument in a control mode to correct the diameter of the wire under production.

On-line measurement of orientation development in the high-speed melt spinning process

1999 ◽  
Vol 39 (12) ◽  
pp. 2349-2357 ◽  
Author(s):  
Takeshi Kikutani ◽  
Kazuhito Nakao ◽  
Wataru Takarada ◽  
Hiroshi Ito
Keyword(s):  
High Speed ◽  
Melt Spinning ◽  
Line Measurement ◽  
Spinning Process ◽  
On Line

Microcomputer-assisted on-line measurement of breathing pattern and occlusion pressure

1984 ◽  
Vol 56 (1) ◽  
pp. 235-239 ◽  
Author(s):  
F. G. Lind ◽  
A. B. Truve ◽  
B. P. Lindborg
Keyword(s):  
Breathing Pattern ◽  
Low Cost ◽  
Occlusion Pressure ◽  
Flexible System ◽  
Analog Signals ◽  
Occlusion Device ◽  
Mouth Pressure ◽  
Line Measurement ◽  
On Line ◽  
Mouth Occlusion Pressure

A flexible system has been developed for on-line breath-by-breath measurements of variables commonly included in studies of breathing pattern and mouth occlusion pressure (P0.1). The system, utilizing analog signals for mouth pressure and inspiratory flow as inputs, includes a breathing pattern monitor and a pneumatically driven occlusion device designed to be compatible with a low-cost microcomputer and analog and/or digital readout instruments. The design of the system permits accurate breathing pattern and P0.1 measurements even at the highest flow and breathing frequency encountered in muscular exercise studies.

On-Line Measurement of Fiber Temperature along Spinning Line Using Monochromatic Infrared Thermometer

2013 ◽  
Vol 774-776 ◽  
pp. 1538-1542
Author(s):  
Xin Wen ◽  
Sheng Lin Yang ◽  
Guang Li
Keyword(s):  
High Speed ◽  
Fiber Diameter ◽  
Calibration Method ◽  
Field Of View ◽  
Probe Field ◽  
Infrared Thermometer ◽  
Line Measurement ◽  
Measurement Results ◽  
On Line ◽  
Reliable Temperature

On-line measurement of fiber temperature based on monochromatic infrared thermometer has been introduced. Due to the probe field of view of monochromatic infrared thermometer being much larger than the fiber diameter, the measurement results is an average between the fiber and backgrounds, which can't be used to indicate the temperature of fibers directly. In this paper, a temperature calibration method has been introduced to decompose the measurement result of monochromatic infrared thermometer, and the calibrated results are compared to the measurement results of infrared thermography. It has been found that the on-line measurement with infrared thermometer could promise high-speed and highly reliable temperature testing for the fibers.

Sign in / Sign up

Export Citation Format

Share Document