A proposal is presented for the conceptual design, component identification, and material selection needed to fabricate, test and validate the performance of an integrated heavy-fuel engine and high pressure pump for use in small watercraft propulsion. The basis of the innovation centers on the… More

"It is proposed to develop simplified composite analytical procedure (SAP) for naval joint design that will perform: 1) material constituent analysis (MCA), 2) material uncertainty analysis (MUA), and fracture damage, and the percentage contribution of eachmaterial constituent to failure mechanisms.… More

It is proposed to develop an innovative

Alpha STAR (Software Development/Engineering Consultant Company), and subcontractors from the University of California at Santa Barbara (UCSB), Clarkson University, and General Dynamics Boat division propose the development, demonstration and extensivevalidation of a simplified analytical procedure… More

Alpha STAR (Software Development/Engineering Consultant Company), and subcontractors from the University of California at Santa Barbara (UCSB), Clarkson University, and General Dynamics Boat division propose the development, demonstration and extensivevalidation of a simplified analytical procedure… More

It is proposed to extend the research effort performed in Phase I in developing reliable field repair techniques for army composite bridges. In Phase II, the innovative repair technology will be refined and optimized using GENOA virtual testing and optimization codes. The health-monitoring… More

It is proposed to apply the capabilities of an award wining integrated life prediction software to a Ceramic Matrix Composite (CMC) nozzle. Previously verified on (CMC) combustor/blade-track, the software will perform: 1) material characterization analysis of 2D/3D CMC architectures at the… More

The objective of this study is to define and demonstrate low-cost 3-D ceramic matrix composite (CMC) architectures and associated manufacturing processes for application to advanced military aircraft (such as the JSF) gas turbine engine components. Three-dimensional architectures offer the potential… More

Computational structural mechanics (CSM) is used in energy and other key national industries, and the ever-increasing size of the simulations imposes a pressing neeed for commensurate increases in computational speed, in order to keep costs and computation times in check. This project will… More

Design of US Army ground vehicles, especially those that operate in combat environments, faces increasingly challenging requirements. The vehicles should be capable of operating in contrasting rough terrains and must support a wide range of optional equipment and payloads. Component and system… More

Manufacturing defects in ceramic composite matrix require 3D fiber architectures to reinforce and toughen both in-plane and out-of-plane directions of CMCs. Modeling 3D material properties and evaluating durability of structures made of 3D composites are of great importance in their application in… More

The HMMWV vehicle has seen increasing weight due to the added anti-ballistic and anti-IED protection, whereas mainframe is not designed to function optimally. Ground mobility forces are conducting increased mounted operations from armored HMMWV/modified HMMWV's. As additional armor and equipment… More

The ever-increasing size of computational structural mechanics (CSM) simulations in energy and other key national industries imposes a pressing need for commensurate increases in computational speed, in order to keep costs and computation times in check. This project will develop an innovative… More

Recent developments of advanced hybrid metallic structural concepts have been extremely promising for durable light-weight and ultra-long fatigue life large transport aircraft. The Alpha STAR team (Alcoa, SWRI, and Virginia Tech) proposes to extend the validated Fiber Metal Laminate (FML) high… More

A significant barrier to the insertion of ceramic matrix composite (CMC) materials into advanced aircraft engines is their inherent lack of toughness under foreign object Damage (FOD) as well as post FOD. Our team will develop and demonstrate a physics-based model for FOD/post FOD in CMC's. The… More

Continuous fiber-reinforced SiC/SiC ceramics matrix composite (CMC) material is being considered in an advanced gas turbine engine intended for an aircraft or an industrial power generation system, for high temperature capability, possibly with added protection from environmental or thermal barrier… More

ABSTRACT: Recent developments of advanced hybrid metallic structural concepts have been promising for enhancing durability and damage tolerance (D & DT) of unitized aircraft structures. The Alpha STAR team, comprised of Alcoa, Northrop Grumman (NGC), and Southwest Research Institute, proposes… More

The Phase II STTR technical objective will update, expand, and validate the excellent results achieved in the Phase I"Analysis and Modeling of Foreign Object Damage (FOD) in Ceramic Matrix Composites (CMC"s)"program. The program will evaluate CMC component life capability before and… More

A composite software design tool kit is proposed to predict composite properties using micro-mechanics augmented lamination theory. The capability will overcome shortcomings of progressive failure models and will take into account translaminar and interlaminar failure mechanisms. Starting from… More