Magnetic Particle Testing (MPT) is a conventional nondestructive examination (NDE) technique for detecting surface and slightly subsurface flaws in ferromagnetic materials such as iron, nickel and cobalt, along with some of their alloys. This involves magnetizing them in order to reveal flaws that would not normally be apparent. MPT is fast and easy to apply in part because surface preparation is not as critical as it is for some other NDE methods. Because of this, it is one of the most commonly used NDE techniques and can be utilized to inspect a variety of ferromagnetic product forms including castings, forgings, and weldments for fitness-for-use.
MPT has been in use for many decades now and in that time has seen a number of advancements and improvements; yet it has still remained one of the simplest and most effective methods for detecting surface flaws in ferromagnetic materials.
This Asset Intelligence Report contains the following sections:
- Overview of Magnetic Particle Testing
- History and Development
- Techniques and Methodology
- Industry Applications
- Codes, Standards, and Best Practices
- Further Reading
As with other Asset Intelligence Reports, this document is not intended to serve as a comprehensive guide, but rather an introductory primer on magnetic particle testing. Since the information is provided in a condensed format, we recommend printing and laminating copies that can be referenced by you and your co-workers at your convenience.
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