DI-SESS-82267

Durability and Damage Tolerance Control (DADTC) Plan (DADTCP)

Describes the tasks necessary to ensure compliance with the durability and damage tolerance requirements of MIL-STD-1530 (ASIP), covering design, analysis, quality assurance, inspection, manufacturing, certification, and maintenance to prevent structural damage.

Approval DateMay 15, 2019

AMSC NumberF10032

Preparing Activity11 (AFLCMC/EZFS)

Project NumberSESS-2019-014

OPR—

DTIC ApplicableNo

GIDEP ApplicableNo

Limitation—

Applicable Forms—

Approval Limitation—

Form Version—

DID Formatfree_text

963C CompliantYes

DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.

Supersedes

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Description & Purpose

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Application & Interrelationship

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Use & Relationship

The Durability and Damage Tolerance Control (DADTC) Plan (DADTCP) describes the tasks necessary to ensure compliance with the durability and damage tolerance requirements contained in 5.1.4 of MIL-STD-1530, Aircraft Structural Integrity Program (ASIP). (Copies of this document are available online at https://quicksearch.dla.mil.) The DADTCP includes the application of engineering design and analysis, quality assurance (QA), nondestructive inspection (NDI), manufacturing, structural certification, and maintenance to prevent damage initiation, damage growth, functional impairment, and loss of residual strength that could compromise structural safety or require costly maintenance actions.

This Data Item Description (DID) contains the format, content, and intended use information for the data deliverable resulting from the work task described in the solicitation.

Preparation Instructions

1Reference documentsThe applicable issue of the documents cited herein, including their approval dates and dates of any applicable amendments, notices, and revisions, shall be as specified in the contract.

2FormatThe DADTCP shall be in the contractor's format.

3ContentThe DADTCP shall include the following sections:

3.1DADTC Team (DADTCT) organizational responsibilitiesDescribe DADTCT authority and responsibility in regards to evaluating design concepts, material, weight, performance, and cost trade studies relative to DADTC throughout the aircraft's design.

3.2DADTCDescribe the processes used to ensure DADT procedures during design and development, manufacturing, materials handling, packaging, shipping, testing, modification, and operation are controlled.

3.3Classification of durability and fracture critical partsDescribe the criteria and principles used for conducting parts criticality classification. Define the process for reviewing and updating durability and fracture critical parts throughout the design of the airframe.

3.4Collection of basic material dataDescribe the basic material data utilized in the initial trade studies and the final design and analyses, including units of measure (as appropriate), to include:

3.4.1Metallic materialsQuantified properties, such as: constant-amplitude fatigue crack growth rate (da/dN), plane strain fracture toughness (KIC), plane stress fracture toughness (Kc), apparent fracture toughness (KAPP), stress corrosion cracking threshold (KISCC), constant-amplitude stress-life (S-N), strain-life (e-N), and cyclic stress-strain.

3.4.2Composite materialsQuantified properties, such as: resistance to low velocity impact damage, interlaminar fracture properties, fatigue properties, and effects of acceptable defects.

3.5Structural design and manufacturingDescribe local design detail concepts, materials, inspectability, maintainability, processing and fabrication practices, and procedures to minimize incorporation of adverse residual stresses.

3.6Structural analysisDescribe the analyses and design processes used to account for DADT requirements in preliminary designs. Describe the processes used to validate that DADT requirements are attained in the final design.

3.7Development and verification testingDescribe the developmental testing to be used to establish material properties when not available from other sources, to develop and validate analytical tools and methods as necessary, to aid in material selection and selecting allowable stress levels, to evaluate spectra effects (for example, retardation, range truncation, etc.), to verify crack growth marking techniques, and to obtain an early evaluation of DADT characteristics of the design. Describe verification testing to be used to assess the accuracy of the DADT analysis tools relative to their ability to predict the fatigue and crack growth behavior of the structure under operational conditions.

3.8Engineering drawings and specificationsDefine the requirements for the manufacture, processing, assembly, inspection, testing, storage, handling, shipping, and maintenance of durability and fracture critical parts. Include any special views or isometric drawings highlighting critical zones, and include details, such as: principle grain direction or 0 degree fiber direction, as needed. Describe the responsibilities and procedures for DADT review and approval of drawings, drawing change orders, and specifications.

3.9Procurement of materials and partsDescribe the approval process for suppliers of durability and fracture critical parts or materials. Identify supplier responsibilities in maintaining and producing certified test data, traceability records, engineering documentation, and specifications.

3.10Material Review (MR), design changes, and material substitutionsDescribe the responsibilities and procedures for DADT review and approval of proposed changes to fracture critical part design, material substitution, manufacturing changes, and MR.

3.11NDI and structural health monitoring (SHM)Define the processes for determining minimum detectable flaw sizes and inspection procedures for durability and fracture critical parts. Describe how NDI and SHM locations are identified and defined in the engineering dataset or in a specification referenced by the dataset.

3.12Quality assuranceDescribe the QA procedures and criteria used to verify that durability and fracture critical parts conform to engineering requirements. Describe the processes used to ensure implementation and function of fracture control practices throughout the supplier chain. Describe the process for material approval for durability and fracture critical parts.

3.13Traceability and serializationDescribe the process for traceability and serialization of durability and fracture critical parts. As necessary, describe the traceability and serialization process for critical parts that receive processing and fabrication operations, which could degrade the design material properties.

3.14Corrosion prevention and controlDescribe the corrosion prevention and control methods and processes used for durability and fracture critical parts.

3.15Force managementDescribe the process for ensuring the DADTCP is followed for continuing airworthiness.

References

quicksearch.dla.mil https://quicksearch.dla.mil

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