MIL-HDBK-115 Us Army Reverse Engineering Handbook Guidelines And ProceduresThis HANDBOOK, which provides the guidelines and procedures for performing reverse engineering, was created using current applicable laws and knowledge gained during a trial program from July 1985 to April 1987, and is based on experiences obtained from military and industry participants. This handbook is for guidance only and cannot be cited as a requirement.

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MIL-HDBK-115B(ARMY)

an aid to establishing tolerances, and to ensure they are identical as the probability of randomly selected items with identical defects is negligible.

5.21.5 Lot determination. If possible, it should be determined whether items were manufactured in the same lot and this fact noted accordingly for the producibility study. Parts manufactured in the same lot may have very slight dimensional differences, may not accurately depict the allowable tolerances, and may have identical defects.

5.22 Material analysis.

5.22.1 Material analysis objective. The material analysis, including chemical and metallurgical analysis, should be performed to determine the composition, surface treatments, finishes, hardness, and heat treatments pertinent to each piece-part/component.

5.22.2 Sample size. Spectrographic samples should be submitted for composition analysis and identification of elements. The suggested sample size is: 1" X 1" X 1," as smaller-sized samples are less cost efficient and may prohibit the use of instrumental analysis. The material analysis for plastic parts usually requires as much as one month additional time. Where possible, samples should be submitted in their entirety for metallurgical analysis. Improper cutting of the sample could affect the hardness readings or the interpretation of the heat treating process.

5.23 Electrical/electronic analysis.

5.23.1 Electrical/electronic analysis objective. The electrical/electronic analysis defines the input/output parameters, component characteristics,

circuit paths, materials, crating and bonding necessary to reproduce the candidate through reverse engineering. The documentation available on the candidate may range anywhere from complete to nonexistent.

verify:

5.23.2. Validate documentation. Documentation should be validated to

a. Design parameters,

b. Prescribed test procedures,

c. Configuration and dimensional tolerance data,

d. Producibility or a like item at reduced cost not using unrestricted or proprietary information, and

e. QC/QA (quality assurance) information.

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