Composite Materials Handbook-MIL 17, Volume III: Materials Usage, Design, and Analysis

by US Dept of Defense

• ISBN13: 9781566768283
• ISBN10: 1566768284
• Edition: 1st
• Format: Paperback
• Copyright: 1999-06-18
• Publisher: CRC Press

Summary

This standardization handbook has been developed and is being maintained as a joint effort of the Department of Defense and the Federal Aviation Administration. It provides guidelines and material properties for polymer (organic) and metal matrix composite materials. This handbook aims to provide a standard source of statistically-based mechanical property data, procedures, and overall materials guidelines for characterization of composite material systems.This volume provides methodologies and lessons learned for the design, manufacture, and analysis of composite structures and for utilization of the material data provided in Volume II consistent with the guidance provided in Volume I. It covers processes and effects of variability; quality control of production materials; design and analysis; structural behavior of joints and reliability; thick section composites; and supportability.

Table of Contents

Foreword	iv
Summary of Changes	x
General Information	1	(1)
Introduction	2	(1)
Purpose, Scope, And Organization of Volume 3	2	(1)
Introduction	2	(1)
Symbols, Abbreviations, And Systems of Units	3	(11)
Symbols and abbreviations	3	(9)
System of units	12	(2)
Definitions	14
References	36
Materials And Processes - the Effect of Variability on Composite Properties	1	(1)
Introduction	4	(1)
Purpose	4	(1)
Scope	4	(3)
Constituent Materials	7	(26)
Reinforcement fibers	7	(20)
Resin Materials	27	(6)
Processing of Product Forms	33	(4)
Fabrics and preforms	36	(1)
Preimpregnated forms	36	(1)
Shipping And Storage Processes	37	(1)
Packing	38	(1)
Shipping	38	(1)
Unpackaging and storage	38	(1)
Construction Processes	38	(5)
Hand lay-up	38	(1)
Automated tape lay-up	38	(1)
Fiber placement	38	(1)
Braiding	39	(1)
Filament winding	39	(1)
Pultrusion	40	(1)
Sandwich construction	40	(1)
Adhesive bonding	41	(2)
Cure And Consolidation Processes	43	(4)
Vacuum bag molding	43	(1)
Oven cure	43	(1)
Autoclave cure	44	(1)
Press molding	44	(1)
Integrally heated tooling	44	(1)
Pultrusion die cure and consolidation	45	(1)
Resin transfer molding	46	(1)
Thermoforming	46	(1)
Assembly Processes	47	(1)
Process Control	47	(5)
Common process control schemes	47	(1)
Example - autoclave cure of a thermoset composite	47	(5)
Preparing Material And Processing Specifications	52
Types of specifications	52	(1)
Format for specifications	52	(2)
Specification examples	54	(1)
Configuration management	54	(2)
References	56
Quality Control of Production Materials	1	(1)
Introduction	2	(1)
Quality Assurance Procedures	2	(8)
Receiving inspection	2	(2)
Process verification	4	(2)
Final inspection	6	(1)
Nondestructive inspection	6
Specifications and documentation	4	(3)
Destructive tests	7	(3)
Material Property Verification	10	(1)
Statistical Process Control	10
References	11
Design And Analysis	1	(1)
Introduction	4	(1)
Basic Lamina Properties And Micromechanics	5	(23)
Assumptions	5	(1)
Fiber composites: physical properties	6	(12)
Fiber composites: strength and failure	18	(5)
Strength under combined stress	23	(3)
Summary	26	(2)
Analysis of Laminates	28	(29)
Lamina stress-strain relations	28	(5)
Lamination theory	33	(6)
Laminate properties	39	(11)
Thermal and hygroscopic analysis	50	(2)
Laminate stress analysis	52	(4)
Summary	56	(1)
Laminate Strength And Failure	57	(16)
Sequential ply failure approach	57	(3)
Fiber failure approach (laminate level failure)	60	(2)
Laminate design	62	(1)
Stress concentrations	63	(3)
Delamination	66	(3)
Damage and failure modes	69	(3)
Summary	72	(1)
Complex Loads	73	(1)
Biaxial in-plane loads	73	(1)
Out-of-plane loads	73	(1)
Lamina to Laminate Considerations	73	(7)
Residual stresses and strains	73	(1)
Thickness effects	73	(1)
Edge effects	74	(1)
Effects of transverse tensile properties in unidirectional tape	74	(1)
Laminate stacking sequence effects	75	(3)
Lamina-to-laminate statistics	78	(1)
Summary	78	(2)
Compressive Buckling And Crippling	80	(22)
Plate buckling and crippling	80	(7)
Compression postbuckling and crippling	87	(15)
Summary	102	(1)
Carpet Plots	102	(1)
Creep And Relaxation	102	(1)
Fatigue	102	(1)
Other Structural Properties	103	(12)
Damage tolerance	103	(6)
Durability	109	(3)
Damage resistance	112	(2)
Summary	114	(1)
Vibration	115	(1)
Introduction	115	(1)
Stacking sequence effects	115	(1)
Computer Programs	115	(1)
Certification Requirements	115
References	117
Structural Behavior of Joints	1	(1)
Introduction	2	(1)
Adhesive Joints	3	(17)
Introduction	3	(1)
Joint design considerations	4	(5)
Stress analysis in adhesive joints	9	(11)
Mechanically Fastened Joints	20
Introduction	20	(1)
Structural analysis	20	(12)
Design considerations	32	(2)
Fatigue	34	(2)
Test verification	36	(4)
References	40
Structural Reliability	1	(1)
Introduction	2	(1)
Factors Affecting Structural Reliability	2	(2)
Static strength	2	(1)
Environmental effects	3	(1)
Fatigue	3	(1)
Damage tolerance	4	(1)
Reliability Engineering	4	(1)
Reliability Design considerations	5	(1)
Reliability Assessment And Design	6
Background	6	(1)
Deterministic vs. Probabilistic Design Approach	7	(1)
Probabilistic Design Methodology	8	(1)
Data Requirements	9	(1)
Summary	9	(2)
References	11
Thick Section Composites	1	(1)
Introduction	2	(1)
Mechanical Properties Required For Thick Section Composite Three-Dimensional Analysis	3	(28)
2-D composite analysis	4	(1)
3-D composite analysis	5	(2)
Experimental material property determination	7	(16)
Theoretical property determination	23	(8)
Test specimen design considerations	31	(1)
Structural Analysis Methods For Thick-Section Composites	31	(1)
Physical Property Analysis Required for Thick-Section Composite Three-Dimensional Analysis	31	(1)
Process Analysis Methods for Thick-Section Composites	31	(1)
Failure Criteria	31	(1)
Factors Influencing Thick-Section Allowables (i.e., Safety Margins)	31	(1)
Thick Laminate Demonstration Problem	31
References	33
Supportability	1	(1)
Introduction	3	(1)
Design For Supportability	4	(6)
Inspectability	4	(1)
Material selection	4	(3)
Damage tolerance and durability	7	(1)
Environmental Compliance	8	(1)
Reliability and maintainability	8	(1)
Interchangeability and replaceability	8	(1)
Accessibility	9	(1)
Repairability	9	(1)
Support Implementation	10	(1)
Inspection	10	(1)
Assessment	10	(1)
Repair	10	(1)
Repair design criteria	10	(1)
Replace	11	(1)
Disposal	11	(1)
Logistics Requirements	11	(1)
Training	11	(1)
Spares	11	(1)
Facilities	11	(1)
Technical data	11	(1)
Support equipment	11	(1)
Terminology	11
References	12
Lessons Learned	1	(28)
Introduction	2	(1)
Unique Issues for Composites	2	(8)
Elastic properties	2	(1)
Tailored properties and out-of-plane loads	3	(2)
Damage tolerance	5	(1)
Durability	5	(1)
Environmental sensitivity	6	(1)
Joints	7	(1)
Design	7	(1)
Handling and storage	8	(1)
Processing and fabrication	8	(1)
Quality control	9	(1)
Lessons Learned	10	(19)
Design and analysis	10	(12)
Materials and processes	22	(1)
Fabrication and assembly	23	(2)
Quality control	25	(1)
Testing	26	(1)
Certification	27	(1)
In-service and repair	27	(2)
References	29
Index	I-1