Designing Composite Structures for Low-Velocity Impact
Abstract
This thesis presents a methodology and set of tools which the designer can use to improve the resistance of composite structures to low- velocity impacts typical of those experienced in the maintenance, handling, service, and manufacturing of composites, typically termed tool drops. The author has investigated the role of simple analysis and experimental techniques which may be used in the early stages of concept evaluation to provide design- decision support for impact resistant concepts. Identifying the most important customer needs and related design criteria through the application of a coherent, cohesive, and comprehensive design methodology is the first step in a successful design, and insuring that these customer needs are translated through the design, engineering, and manufacture of the product is the essence of design. The author has developed a comprehensive impact design methodology which is contextual, i.e., it is presented in the context of all other design criteria. Instrumented impact testing has been used to identify the incipient damage load in typical unidirectional carbon fiber thermoset and thermoplastic matrix composite coupons subjected to low-velocity impacts. Results have been correlated with static load-deflection response of equivalent coupons in a unique test setup using the same apparatus and then correlated with a finite element analysis of the test specimens. (SDW)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1990
- Accession Number
- ADA225217
Entities
People
- Timothy C. Lindsay
Organizations
- University of Delaware