Cracks and fractures announce: predictive maintenance can prevent outages and shutdowns. Contact information is here: Sen. Sherrod Brown. To the most important functional elements must be monitored constantly by machines. Excellent processing aims to meet the market requirements for high-quality and cost-effective products. Against the background of the JIT-time production, modern manufacturers are undoubtedly under great pressure. The key to success is for the manufacturer to at any time to ensure the best performance of their machines, because frequently severe damage resulting from defects. The goal of predictive maintenance of rolling bearings is permanently to ensure their stable and reliable operation. Surface defects are the most common defects on bearings. Contact Fatigue fractures occur as a result in the surface materials of raceways or rolling elements.

The vibration signals of rolling bearings are very weak in the early stages of the development of fatigue damage. Join with other vibration signals Machine components and exposed noise, which complicates the identification of damage. Fortunately, the measurement of acoustic emissions can identify crack growth caused by fatigue damage. This is a great advantage for the early forecast and diagnosis of rolling bearing damage. Full wave detecting acoustic emission signals the analysis of noise emissions is an important method of dynamic monitoring of material or structural conditions. This method has evolved gradually from the initial mere acquisition size for today’s full waveform analysis.

A system for the analysis of noise consists of a seismic sensor, a preamplifier, and a high-speed data acquisition. Acoustic emission signals have wide spectrum and have frequencies of a few kHz up to the 10-MHz range. Therefore, a digitizer is required for capturing data that has a sampling rate of 20 MS/s or higher. In addition are Acoustic emission signals are very weak. Original acoustic emission signals are usually at the level of Volt and can be reached only a few mVolt also Preamplification. In addition, they have a large waveform amplitude range.