Analyzing the effectiveness of composite materials for an automatically deployable ROPS application.
Glaessgen-EH; Raju-IS; Ronaghi-M; Etherton-JR
NOIRS 2000--Abstracts of the National Occupational Injury Research Symposium 2000, Pittsburgh, PA, October 17-19. Pittsburgh, PA: National Institute for Occupational Safety and Health, 2000 Oct; :12
Composite materials are used extensively in the aerospace community because of their structural characteristics such as high stiffness and strength-to-weight ratios. However, laminated composites are difficult and expensive to manufacture and often exhibit low resistance to impact, notches and other forms of damage. These deficiencies prevented the use of composites in critical or primary structure. Recently, the development of textile-based composites has significantly increased the damage tolerance characteristics of the material while improving manufacturability and reducing cost. As cost, manufacturability and damage tolerance have improved, composites are being applied to automotive, infrastructure and other non-aerospace applications. The National Institute for Occupational Safety and Health (NIOSH) is conducting research to develop an automatically deployable roll over protection system (AutoROPS) for use on farm equipment. The AutoROPS system is designed to work in applications where overhead clearance limits the use of a fixed roll over protection system (ROPS). In the AutoROPS application, a lightweight and damage tolerant ROPS structure is critical for rapid deployment from the stowed configuration and for reduction of the weight of the deployment system while maintaining the integrity of the structure during roll-over. Composite materials offer the potential to satisfy this requirement. In this presentation, recent advancements related to composite materials are briefly reviewed and important considerations for the application of composite materials to the AutoROPS are discussed including the cost, manufacturability and performance of composites under the ROPS loading regime. The response of composites under compression loading, their energy absorption limits in cantilever loading, and durability enhancements with newer textile materials also will be presented.
Accidents; Accident-prevention; Injuries; Traumatic-injuries; Injury-prevention; Agricultural-industry; Agricultural-machinery; Control-technology; Engineering-controls; Protective-equipment; Safety-equipment; Safety-research
Conference/Symposia Proceedings; Abstract
NOIRS 2000 Abstracts of the National Occupational Injury Research Symposium 2000, Pittsburgh, PA., October 17-19, 2000