MIL-HDBK-349 Base Document:1994

1.0 GENERAL 1NFORMATION
    1.1 Introduction
    1.2 Purpose
    1.3 Scope
    1.4 Use of Handbook and Limitations
    1.5 Approval Procedures
2.0 APPLICABLE DOCUMENTS
    2.1 Government Documents
        2.1.1 Specification and Standards
    2.2 Non-Government Documents
    2.3 Order of Precedence
3.0 DEFINITIONS OF TERMS AND ACRONYMS
4.0 GENERAL REQUIREMENTS
    4.1 Introduction
        4.1.1 Sandwich Construction
        4.1.2 Materials Selection and Fabrication
    4.2 Face Skins
        4.2.1 Function and General Description
        4.2.2 Aluminum Face Skin
        4.2.3 Fiberglass Face Skin
    4.3 Sandwich Cores (Aluminum)
        4.3.1 Function and General Description
        4.3.2 Types of Core
    4.4 Adhesives
        4.4.1 Function and General Description
        4.4.2 Phenolic
        4.4.3 Epoxy
        4.4.4 Other Organic Systems
        4.4.5 Adhesive Primers
    4.5 Auxiliary Manufacturing Materials
        4.5.1 Solvents
        4.5.2 Sealants/Aerodynamic Smoothers
        4.5.3 Bagging Materials
        4.5.4 Potting Compounds
    4.6 General Requirements
        4.6.1 Personnel
        4.6.2 Manufacturing Facilities and Equipment
        4.6.3 Supplier Requirements
        4.6.4 Record Keeping
        4.6.5 Safety Considerations
5.0 DETAILED REQUIREMENTS
    5.1 Introduction
        5.1.1 Process Flow Chart
    5.2 Fabrication Operations
        5.2.1 Aluminum Honeycomb Core
        5.2.2 Aluminum Alloy Skins and Detail Parts
    5.3 Prefit
        5.3.1 Mechanical
        5.3.2 Impression (Overlay)
    5.4 Surface Preparation
        5.4.1 Bond Fixtures
        5.4.2 Single-/Multiple-Stage Bonding
        5.4.3 Aluminum Honeycomb Core
        5.4.4 Aluminum Alloy Skins and Detail Parts and Precured
              Glass Reinforced Plastic Details
        5.4.5 Process Control Coupons (Panels/Specimens)
    5.5 Priming and Adhesive Application
        5.5.1 Application of Primer
        5.5.2 Application of Film Adhesives
        5.5.3 Application of Foam Adhesives
    5.6 Assembly and Curing
        5.6.1 Lay-Up
        5.6.2 Vacuum Bagging (When Curing is an Autoclave)
        5.6.3 Curing
        5.6.4 Secondary Bonding
        5.6.5 Post Bond Cleaning
        5.6.6 Visual and Dimensional Inspection
        5.6.7 Rework
    5.7 Final Processing
        5.7.1 Sealant/Aerodynamic Smoother Applications
        5.7.2 Leak Testing
        5.7.3 Nondestructive Testing
        5.7.4 Corrosion Protection
        5.7.5 Identification
        5.7.6 Packaging
        5.7.7 Disposition of Defective and/or Damaged Parts
    5.8 Quality Assurance
        5.8.1 Introduction
        5.8.2 Quality Assurance Plan and Administration
        5.8.3 Mechanical Testing
        5.8.4 Nondestructive Inspection
6.0 NOTES
    6.1 Intended Use
    6.2 Subject Terms (Keywords) Listing
REFERENCE
INDEX
List of Figures
List of Tables

Describes the requirements for fabrication and inspection for acceptance of adhesive bonded, aluminum faced, nonperforated aluminum honeycomb core sandwich assemblies intended for use as aircraft spare parts.