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Chapter 16: C. Inspection Planning and Procedures 179Table 16.1 Standards pertaining to material review board operations.StandardMIL-STD-1520CMIL-Q-9858AMIL-STD-481BMIL-I-8500ANSI/ASQ Z1.4-2003ANSI/ASQ Z1.9-2003PurposeSets “the requirements for cost-effective corrective action anddisposition system for nonconforming material”Quality program requirements, Section 6.5, NonconformingMaterial, requires the contractor to establish “an effective andpositive system for controlling nonconforming material”Configuration control—engineering changesEstablishes interchangeability and replaceability requirementsSampling procedures and tables for inspection by attributesSampling procedures and tables for inspection by variables forpercent nonconformingWithin the context of defect classification, defects may further be classifiedas major or minor. Minor defects, unlike major ones, may not adversely affect theintegrity of the part, component, or assembly. In many cases, the MRB concludesthat the lot containing nonconforming products should not be shipped as is.The final decision, concurred with by inspection personnel, may be to sort(100 percent inspection), downgrade, repair, rework, or scrap. A decision to ship alsomay be authorized by the MRB. In such cases, a unanimous decision should bereached by all members. The decision also should create factual data and thusan important source of information. A successful MRB program requires that theboard not only make decisions about immediate disposition of rejected material,but also direct ongoing programs of root cause analysis to eliminate future rejectionsof the same type.There are several military documents associated with the MRB concept. Apartial list is shown in Table 16.1.Part III.C.6

Chapter 17D. Testing MethodsContributed byDr. Nabeel Yousef, University of Central Florida—Orlando1. NONDESTRUCTIVE TESTINGDefine methods such as X-ray, eddy current,ultra sonic, dye penetrant, and magneticparticle. (Knowledge)Part III.D.1Body of Knowledge III.D.1Nondestructive testing (NDT) is testing that does not destroy the test object. It isalso referred to as nondestructive evaluation or examination (NDE). The AmericanSociety for Nondestructive Testing (ASNT) defined nondestructive testing as “testmethods used to examine or inspect a part or material or system without impairingits future usefulness” (Dettmers 2004) (ASNT 2008).NDT Applications and ObjectivesThe history of nondestructive testing started in the early 1900s and has evolvedover the years from being captive in the lab into a very powerful production tool.Nondestructive testing is now used worldwide to detect variation in productfinish and product defects. This type of testing is used in most if not all of thestages of the production process. The Center for NDE at Iowa State Universitylisted some of the applications for NDT as follows (Larson 2000):• Screening and inspection of incoming material• Product development• Inspection for in-service damage• Verifying proper processes• Monitoring and controlling manufacturing processes• Verifying proper assemblyThe objectives of such tests are (ASNT 2008):180

Chapter 17

D. Testing Methods

Contributed by

Dr. Nabeel Yousef, University of Central Florida—Orlando

1. NONDESTRUCTIVE TESTING

Define methods such as X-ray, eddy current,

ultra sonic, dye penetrant, and magnetic

particle. (Knowledge)

Part III.D.1

Body of Knowledge III.D.1

Nondestructive testing (NDT) is testing that does not destroy the test object. It is

also referred to as nondestructive evaluation or examination (NDE). The American

Society for Nondestructive Testing (ASNT) defined nondestructive testing as “test

methods used to examine or inspect a part or material or system without impairing

its future usefulness” (Dettmers 2004) (ASNT 2008).

NDT Applications and Objectives

The history of nondestructive testing started in the early 1900s and has evolved

over the years from being captive in the lab into a very powerful production tool.

Nondestructive testing is now used worldwide to detect variation in product

finish and product defects. This type of testing is used in most if not all of the

stages of the production process. The Center for NDE at Iowa State University

listed some of the applications for NDT as follows (Larson 2000):

• Screening and inspection of incoming material

• Product development

• Inspection for in-service damage

• Verifying proper processes

• Monitoring and controlling manufacturing processes

• Verifying proper assembly

The objectives of such tests are (ASNT 2008):

180

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