SBIR-STTR Award

The work proposed here seeks to integrate data from NSMS, strain gage data acquisition systems and analytical models so that the time required to perform product evaluation is reduced and accuracy of the result is improved. Experimental Design & Analysis Solutions, Inc. (EDAS, Inc.) will build upon it significant experience in holistic HCF test and evaluation, data acquisition, and data analysis to develop and market an easy-to-use interface that integrates these three data sources. Basic building blocks to be used as the elements of integration are the EDAS-DS data acquisition product, the EDAS GageMapII finite element and test interface product, and the U.S. Air Force developed Generation IV NSMS technology acquired through a pending cooperative research and development agreement (CRDA) with the Arnold Engineering Development Center. Phase I of our proposal seeks to demonstrate and document the information interfaces between the three data sources and resolve reference frame, coordinate system, and time basis differences. Phase II of the proposal will extend the application to a rig test of a to-be-identified JSF test article and will initiate commercialization of the analysis product to include provisions for interface to any desired manufacturer of NSMS or strain gage data acquisition products.

Keywords:
Nsms, Finite Element Modeling, Test And Evaluation, Signal Processing, Test Protocol, Strain Gage, Hcf

Characterizing turbine engine rotor vibratory characteristics is becoming increasingly complex with the introduction of advance technologies, such as integrally bladed rotors (IBR), low aspect ratio airfoils, 3-D aerodynamic computational fluid dynamics (CFD) design blades, and advance materials. The analysis and measurement techniques used to evaluate the vibratory characteristics has also advanced, but often times resulting in increased information from dissimilar sources. The objective of this research is to develop improved rotor vibratory characterization through integration of all the available data sources, including Finite Element Models, non-contact stress measurement systems (NSMS) and strain gages. In Phase I, feasibility of the integration was demonstrated in different planning, testing, and analysis phases of the vibratory characterization test process on a laboratory rotating rig. Phase II will extend the concepts demonstrated in Phase I to application on highly instrumented, advanced technology turbine engines.

Keywords:
High Cycle Fatigue, Non-Contact Stress Measurement System, Turbine Engine, Vibration, Finite Element Model, Dynamic Data