Barkhausen Noise Analysis, Level 3
Manufacturing Processes - Detection of Grinding Burn - Inspection Instructions
Barkhausen Noise Analysis (BNA), also known as the magneto-elastic or micro-magnetic method, is based on the principal of inductive measurement of a noise-like signal which is generated when a ferromagnetic component is magnetized. The signal is called Barkhausen noise, after German scientist Professor Heinrich Barkhausen who first described this phenomenon in 1919. Many surface treatments, such as grinding, hard turning, case and induction hardening, and shot peening, cause considerable changes in the residual stress and microstructure of the surface that can be characterized using Barkhausen noise. The main application of the Barkhausen method is the inspection of hard-fine finishing (detection of grinding burn). Processes such as creep and fatigue also change the residual stress and microstructure and can be analyzed using Barkhausen noise.
The seminar is aimed at QA personnel and technicians with experience in Barkhausen testing technology. The goal of the training is to provide participants with all necessary knowledge, from the basics to heat treatment and finishing technology, materials science, testing technology, etc.
The following topics will be addressed: physical and metallurgical principles, finishing processes and the formation of grinding burn, materials testing, testing procedures, testing instruction and documentation, specifications, the principal of using Barkhausen Noise Analysis to detect grinding burn, and requirements for testing personnel.
All required knowledge for Barkhausen Noise Analysis will be provided in the four-day seminar. After completing the seminar, participants will be able to train employees on the basics of Barkhausen testing technology, guide them in testing, and create testing protocols and instructions.