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SAE AMS STD 401 : 1999

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

SANDWICH CONSTRUCTIONS AND CORE MATERIALS - GENERAL TEST METHODS
Available format(s)

Hardcopy , PDF

Superseded date

05-03-2023

Language(s)

English

Published date

06-01-1999

Publisher

SAE International

1 SCOPE
    1.1 Scope
2 APPLICABLE DOCUMENTS
    2.1 U.S. Government Publications
    2.2 ASTM Publications
3 DEFINITIONS
    3.1 General
          3.1.1 Sandwich
          3.1.2 Core
          3.1.3 Facing
          3.1.4 Flatwise
          3.1.5 Edgewise
          3.1.6 Isotropic
          3.1.7 Orthotropic
                  3.1.7.1 Orthotropic facing directions
                  3.1.7.2 Orthotropic core directions
4 GENERAL REQUIREMENTS
    4.1 Selection of test samples
          4.1.1 Design data
          4.1.2 Quality assurance provisions
                  4.1.2.1 Sampling for the various
                            inspections, examinations and
                            tests
    4.2 Test conditions
    4.3 Test apparatus
    4.4 Report of test results
    4.5 Designation of units of measurement
5 DETAIL TEST METHODS
    5.1 Core Test Methods
          5.1.1 Core Density and Specific Gravity
          5.1.2 Core Moisture Sorption
          5.1.3 Core Thermal Conductivity
          5.1.4 Core Compression
          5.1.5 Core Shear
          5.1.6 Core Tension
          5.1.7 Core Water Migration
          5.1.8 Core Delamination of Honeycomb Core
    5.2 Sandwich test methods
          5.2.1 Sandwich Compression
          5.2.2 Sandwich Shear
          5.2.3 Sandwich Tension
          5.2.4 Sandwich Flexure
          5.2.5 Sandwich Thermal Conductivity
          5.2.6 Sandwich Peel
    5.3 Fatigue Tests
    5.4 Creep Characteristics
FIGURES
1 Axes notation for sandwich cores
2 Sketch showing shear specimens attached to loading plates
    and plane of action of applied loads
3 Compression test apparatus showing an adjustable
    supporting base and slotted round bars in position on
    the specimen ends. Deformations are being measured
    with Marten's mirror compressometers
4 Test apparatus for tension flatwise test of core
    material for sandwich-type constructions showing
    specimens and fitting for applying load
5 Apparatus for conducting flexure test of sandwich
    peel test
6 Type of apparatus suitable for making sandwich peel test
7 Possible modes of failure of sandwich composite under
    edgewise loads: General buckling, shear crimping,
    dimpling of facings, and wrinkling of facings either
    away from or into the core
8 Apparatus for node strength tests

Describes the general requirements and procedures for testing sandwich core materials and for testing sandwich construction of the types used mainly in aircraft structures. Not inclusive of test procedures which apply only to a specified product, as these are included in detailed product specifications.

Committee
AMS P17
DevelopmentNote
Replaces MIL-STD-401
DocumentType
Test Method
Pages
34
PublisherName
SAE International
Status
Superseded
SupersededBy

Standards Relationship
MIL-STD-401 Revision B:1967 Similar to

MIL STD 11991 : A GENERAL STANDARD FOR PARTS, MATERIALS, AND PROCESSES
SAE AMS C 7438 : 2014 CORE MATERIAL, ALUMINUM, FOR SANDWICH CONSTRUCTION
NASA STD 6016(INT) : 2006 STANDARD MATERIALS AND PROCESSES REQUIREMENTS FOR SPACECRAFT
NASA STD 6016 : 2016 STANDARD MATERIALS AND PROCESSES REQUIREMENTS FOR SPACECRAFT
NASA JSC 27301 : 2009 MATERIALS AND PROCESSES SELECTION, CONTROL, AND IMPLEMENTATION PLAN FOR JSC FLIGHT HARDWARE
SAE AIR 6291 : 2014 GUIDELINES FOR REPAIR PROCESS EVALUATION OF ALUMINUM BONDED STRUCTURE
SAE AS 8056 : 2004(R2016) MINIMUM DESIGN AND PERFORMANCE OF AIRPLANE GALLEY IN-FLIGHT CARTS, CONTAINERS, AND ASSOCIATED COMPONENTS

ASTM C 271 : 1999 Standard Test Method for Density of Sandwich Core Materials
ASTM C 393 : 2000 Standard Test Method for Flexural Properties of Sandwich Constructions
ASTM D 1781 : 1998 Standard Test Method for Climbing Drum Peel for Adhesives
ASTM C 297 : 1994 : R1999 Standard Test Method for Flatwise Tensile Strength of Sandwich Constructions
ASTM C 363 : 2000 Standard Test Method for Delamination Strength of Honeycomb Core Materials
MIL-STD-105 Revision E:1989 SAMPLING PROCEDURES AND TABLES FOR INSPECTION BY ATTRIBUTES

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