OVERVIEW
PURPOSE.
Nondestructive Inspection (NDI) is the inspection of a structure or component in any manner that will not impair its future usefulness. The purpose of the inspection may be to detect flaws, measure geometric characteristics, determine material structure or composition, or it may characterize physical, electrical, or thermal properties without causing any changes in the
part. The five standard NDI disciplines include:
Liquid Penetrant
Magnetic Particle
Eddy Current
Ultrasonic
Radiography
SCOPE.
This publication contains the concepts, process controls, and theory of NDI methods and SHALL be used as a guide in development of NDI procedures and manuals. Guidance for development of NDI procedures is contained in MIL-DTL-
87929C, Appendix F. NDI procedures SHALL be detailed step-by-step instructions with illustrations so a qualified NDI technician can perform the required inspection. In addition this manual provides guidance in safety guidelines of these NDI methods.
FORMAT OF PROCEDURES.
Though MIL-DTL-87929C is a directive for NDI Work Packages, it provides the proper format for detailed/repetitive NDI procedures. To ensure continuity of inspections, all on and off equipment maintenance NDI manuals (e.g. -9, -36, etc.) SHALL be written to adopt the special requirements of MIL-DTL-87929C into MIL-PRF-83495 when writing NDI procedures for these maintenance manuals. An individual qualified and certified to Level 3 in accordance with NAS 410 in the inspection method being used, SHALL approve all written procedures. References to ASTM standards alone SHALL NOT be used since they do not provide any inspection/part/material details. MIL-DTL-87929C also directs that procedures for commodity items and support equipment contained in or on the weapon system SHALL be included in the system
peculiar manual. To clarify this, if the part is inspected on the aircraft or removed for inspection without further disassembly, the procedure SHALL be included in the specific aircraft NDI manual; however, if part requires further disassembly, the procedures SHALL be located in the commodity component’s overhaul or maintenance manual. For specific information on
the operation, maintenance, or inspection of a particular piece of NDI equipment or a weapons system, consult the appropriate technical manual.
SUBJECTS by CHAPTER
1. TEXT - NONDESTRUCTIVE INSPECTION METHODS AND GENERAL INFORMATION
2. TEXT IN SLIDE FORMAT - LIQUID PENETRANT INSPECTION METHOD
3. TEXT IN SLIDE FORMAT - MAGNETIC PARTICLE INSPECTION METHOD
4. TEXT IN SLIDE FORMAT - EDDY CURRENT INSPECTION METHOD
5. TEXT IN SLIDE FORMAT - ULTRASONIC INSPECTION METHOD
6. TEXT IN SLIDE FORMAT - RADIOGRAPHY INSPECTION METHOD
7. TEXT IN SLIDE FORMAT - GLOSSARY
8. VIDEO - Automated Manufacturing Research Facility (National Bureau of Standards)
