The objective of this proposed program is to develop an automated cad system for the structural design and analysis of aerospace members. the system will allow complex assemblies to be synthesized from standard parts libraries in a "tinkertoy" assembly fashion. the system will be able to… More

The objective of this proposed research is to develop a cad-based expert system for the design of structural repairsand for the detailed design of structural members. the system will couple variational geometry, automated finite element mesh generation and design sensitivity analysis into a tool… More

The objective of this project is to develop and validate improved methodology for the substantiation and the usage-based tracking of rotorcraft dynamic system components. A Helicopter Information Retrieval & Substantiation System(HIRSS) is proposed whichconsists of (1) an Universal Damage Tracking… More

"The objective of this project is to develop and validate a 2nd generation crack-growth prediction methodology for cold-worked fastener holes. The methodology will be based on a three-dimensional weight function, and will handle cracks growing from theedge of the hole, as well as cracks initiating… More

The objective of the Phase II research is to utilize the lessons learned from the Phase I risk reduction work to develop a prototype CAD-programmable environment for the development of condition-based maintenance systems for rotorcraft. This developmentenvironment features a CAD scenario modeler… More

The objective of the Phase II research is to utilize the lessons learned from the Phase I risk reduction work to develop a prototype CAD-programmable environment for the development of condition-based maintenance systems for rotorcraft. This developmentenvironment features a CAD scenario modeler… More

The objective of this project is to develop and validate an improved technology base for the cold-working of high strength aluminum alloys. The improved technology base consists of the following three legs: 1. A test-validated CAD/CAM tool for performing virtual cold-working and for virtual… More

The objective of this project is to develop a test-validated CAD tool for performing virtual laser shock peening(LSP) simulations of rotorcraft components. Virtual LSP peening can be used, in conjunction with virtual fatigue testing, to conduct simulations to assess the effects of variations in… More

The objective of this project is to develop and validate a CAD tool for the rapid design of mechanically fastened repairs, bonded repairs, and hybrid repairs involving both adhesive bonding and mechanical fasteners. To allow use by non-specialists, the CAD tool will replace the current process of… More