Composite Materials Handbook-MIL 17, Volume I

Guidelines for Characterization of Structural Materials

Us Dept Of Defense

• Publisher: Routledge
• Year: 2019
• eBook ISBN: 9781351459259
• Topic: Technology & Engineering
• Subtopic: Physical & Theoretical Chemistry
• Index: Technology & Engineering

This handbook documents engineering methodologies for the development of standardized, statistically -based material property data for polymer matrix composite materials. Also provided are data summaries for a number of relevant composite material systems for which available data meets specific MIL-HNBK-17 requirements for publication. Additionall

CHAPETR 1 OBJECTIVES

1.1 INTRODUCTION

1.2 PURPOSE

1.3 SCOPE

1.3.1 Volume 1: Guidelines for Characterization of Structural Materials

1.3.2 Volume 2: Material Properties

1.3.3 Volume 3: Materials Usage, Design, and Analysis Guidelines

1.4 USE OF THE DOCUMENT AND LIMITATIONS

1.4.1 Source of information

1.4.2 Use of data and guidelines in applications

1.4.3 Strength properties and allowable terminology

1.4.4 Use of references

1.4.5 Use of tradenames and product names

1.4.6 Toxicity, health hazards, and safety

1.4.7 Ozone depleting chemicals

1.5 APPROVAL PROCEDURES

1.6 SYMBOLS, ABBREVIATIONS, AND SYSTEMS OF UNITS

1.6.1 Symbols and abbreviations

1.6.1.1 Constituent properties

1.6.1.2 Laminae and laminates

1.6.1.3 Subscripts

1.6.1.4 Superscripts

1.6.1.5 Acronyms

1.6.2 System of units

1.7 DEFINITIONS

REFERENCES

This handbook documents engineering methodologies for the development of standardized, statistically-based material property data for polymer matrix composite materials. Also provided are data summaries for a number of relevant composite material systems for which available data meets specific MIL-HDBK-17 requirements for publication. Additionally, supporting engineering and manufacturing technologies and common practices related to composite materials are summarized.

1.1 INTRODUCTION

It is generally understood that standardized, statistically-based, material property data are essential to an efficient engineering development process; such data are needed by material suppliers, engineering users, and system end-users alike, Since the inherent properties of materials are independent of specific applications, data development methodologies and material property data are applicable to a wide variety of industries; they also form much of the technical basis for establishment of statistically-based design values acceptable to procuring or certifying agencies.¹ This evaluation of the inherent properties of composite materials, as shown in Figure 1.1, is the focus of MIL-HDBK-17.

While the source and context for much of the handbook has historically come from experience with aerospace flight-critical structures, all transportation industries (aerospace, ground, rail, and marine), whether commercial or military, as well as other applications including general industrial products, will find the handbook useful. Incorporation of additional information related to broader applications is ongoing.

This handbook has been developed and is maintained as a joint effort of the US Department of Defense (DOD) and the US Federal Aviation Administration (FAA). The data contained herein, or appearing as approved items² in the minutes of MIL-HDBK-17 coordination group meetings, while not mandatory,, are acceptable for use in the development of structural design values to the FAA and to all branches of the DOD. Note however, that methods for incorporating handbook data into structural design values for specific applications generally require additional procurement or certification agency approval.

1.2 PURPOSE

The primary purpose of MIL-HDBK-17 is the standardization of engineering data development methodologies related to characterization testing, data reduction, and data reporting of properties for polymer matrix composite materials. In support of this objective MIL-HDBK-17 publishes properties on composite material systems for which data meeting specific requirements is available. In addition, MIL-HDBK-17 provides selected guidance on other technical topics related to composites, including material selection, material specification, material processing, design, analysis, quality control and repair of typical polymer matrix composite materials. Thus, MIL-HDBK-17 is published in three volumes, and serves as a source for the following:

• Volume 1. Documents material characterization data development methodology guidelines adaptable to a wide variety of needs, as well as specific requirements to be met by data published in the handbook. Most procuring and certifying agencies prefer, and some may require, that composite material systems used in critical applications either be characterized in accordance with Volume 1 guidelines or selected from material systems published in Volume 2.

FIGURE 1.1 Focus of MIL-HDBK-17 indicated by shaded block.

• Volume 2: Provides a repository of potential design data. The documented property summaries for material systems provide data meeting the criteria for any of the three MIL-HDBK-17 data documentation classes, (screening, interim, and fully approved).

• Volume 3: Source for additional technical guidance on a wide variety of disciplines related to polymer matrix composites.

1.3 SCOPE

This handbook is for guidance only. This handbook cannot be cited as a requirement. If it is, the cont...

Table of contents

• Cover
• Title Page
• Copyright Page
• Table of Contents
• Summary of Changes
• CHAPTER 1 OBJECTIVES
• CHAPTER 2 GUIDELINES FOR PROPERTY TESTING OF COMPOSITES
• CHAPTER 3 EVALUATION OF REINFORCEMENT FIBERS
• CHAPTER 4 MATRIX CHARACTERIZATION
• CHAPTER 5 PREPREG MATERIALS CHARACTERIZATION
• CHAPTER 6 LAMINA AND LAMINATE CHARACTERIZATION
• CHAPTER 7 STRUCTURAL ELEMENT CHARACTERIZATION
• CHAPTER 8 STATISTICAL METHODS
• INDEX