Rolling Element Bearing Fault Diagnosis Using Integrated Nonlocal Means Denoising with Modified Morphology Filter Operators

Figure 2

The results of using improper SEs lengths: (a) the filtered signal after using too short a length of SE for opening; (b) the filtered signal after using too short a length of SE for closing; (c) the filtered signal after using too long a length of SE for opening; (d) the filtered signal after using too long a length of SE for closing.

(a)

(b)

(c)

(d)