Determination of Fiber Length How is the distribution frequency calculated?

There are usually many ways to measure fiber length, the following are two common methods:

• microscopic counting

This method needs to put the fiber sample under the microscope, and count and count the fiber length data observed by the microscope. The advantage of this method is that it is more intuitive and can directly observe the fiber shape and length, but it requires certain experience and skills. The fiber length distribution determined by microscopic counting usually exhibits a Poisson distribution.

• image analysis

This method uses computer technology to process and analyze fiber images, and uses image analysis software to measure fiber length. The advantage of this method is that it is highly automated and capable of processing large amounts of data, but requires certain image processing and computer programming skills.

As for the calculation of the fiber distribution frequency, it is usually necessary to measure the fiber length distribution first, then classify the fiber lengths, and calculate the ratio of the number of fibers in each length interval to the total number of fibers to obtain the fiber distribution frequency. For example, the fiber length can be classified according to 1mm as a length interval, the number of fibers in each length interval can be counted, and the ratio of the number of fibers in each length interval to the total number of fibers can be calculated.