국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Failure at Frame-Stringer Intersections in PRSEUS Panels
저자	Jegley, Dawn C.
Keyword	COMPOSITE STRUCTURES;; DURABILITY;; EPOXY MATRIX COMPOSITES;; LOW COST;; MILITARY TECHNOLOGY;; PULTRUSION;; RODS;; TRANSPORT AIRCRAFT;; WEIGHT REDUCTION
URL	http://hdl.handle.net/2060/20120015494
보고서번호	NF1676L-14189
발행년도	2012
출처	NTRS (NASA Technical Report Server)
ABSTRACT	NASA, the Air Force Research Laboratory and The Boeing Company have worked to develop new low-cost, light-weight composite structures for aircraft. A Pultruded Rod Stitched Efficient Unitized Structure (PRSEUS) concept has been developed which offers advantages over traditional metallic structures. In this concept a stitched carbon-epoxy material system has been developed with the potential for reducing the weight and cost of transport aircraft structure by eliminating fasteners, thereby reducing part count and labor. By adding unidirectional carbon rods to the top of stiffeners, the panel becomes more structurally efficient. This combination produces a more damage tolerant design. This study focuses on the intersection between the rod-stiffener and the foam-filled frame in a PRSEUS specimen. Compression loading is considered, which induces stress concentrations at the intersection point that can lead to failures. An experiment with accompanying analysis for a single-frame specimen is described, followed by a parametric study of simple reinforcements to reduce strains in the intersection region.