REG NASA-LLIS-0811-2000 Lessons Learned Radiographic Testing of Aerospace Materials.pdf

1、Best Practices Entry: Best Practice Info:a71 Committee Approval Date: 2000-04-17a71 Center Point of Contact: MSFCa71 Submitted by: Wil HarkinsSubject: Radiographic Testing of Aerospace Materials Practice: Radiographic testing can be used as a nondestructive method for detecting internal defects in t

2、hick and complex shapes in metallic and nonmetallic materials, structures, and assemblies.Programs that Certify Usage: This practice has been used on Saturn I, IB (b) analyze the image to determine the nature and extent of any abnormal condition in the test piece; (c) evaluate the test piece by comp

3、aring interpreted information with standards or specifications; and (d) report inspection results accurately and clearly. The major advantages and disadvantages of radiographic testing are listed in Table 3.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS

4、-,-,-refer to D descriptionD Table 3. Advantages and Disadvantages of Radiographic Testing Technical Rationale:Radiographic testing has been used successfully at MSFC for years to identify and characterize cracks, voids, inclusions, porosity, lack of weld penetration, lack of fusion in welds, and ma

5、ny other types of defects. Radiographic testing is an accurate and reliable nondestructive testing method for determining defects and flaws internal to materials, structure, and assemblies. It is also used to detect defects and flaws in both metallic and nonmetallic materials.References:1. MIL-HDBK-

6、728/5: “Military Handbook: Radiographic Inspection,“ December 1985.2. MIL-STD-410E: “Nondestructive Testing Personnel Qualification and Certification,“ Military Standard, January 1991.3. MM 1860.2D: “Radiation Safety Manual,“ NASA, Marshall Space Flight Center, Marshall Space Flight Center, AL 35812

7、, December 1991.4. MM 1700.4C: “Safety and Environmental Health Standards,“ NASA, Marshall Space Flight Center, Marshall Space Flight Center, AL, December 1983.5. Metals Handbook, Volume 17: “Nondestructive Inspection and Quality Control,“ pp. 295-357, ASM International, Metals Park, OH, 1989.6. MIL

8、-STD-453C: “Radiographic Inspection,“ Military Standard, December 1984.7. Ultrasonic Testing of Aerospace Materials: Reliability Preferred Practice PT-TE-14228. Eddy Current Testing of Aerospace Materials: Reliability Preferred Practice PT-TE-1421Impact of Non-Practice: Failure to detect defects and

9、 flaws internal to materials could result in failure of components and possible loss of mission and life.Related Practices: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-N/AAdditional Info: Approval Info: a71 Approval Date: 2000-04-17a71 Approval Name: Eric Raynora71 Approval Organization: QSa71 Approval Phone Number: 202-358-4738Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-