Design And Evaluation Of A Test Device For Thermal-Acoustical-Mechanical Fatigue Experiments

Abstract

In light of the combined extreme environment to which hypersonic fuselage components will be subjected, a unique test platform has been developed for evaluating materials and structures under service-like conditions. Typical ascent-cruise-descent missions will expose panels to thermal cycling, while aerodynamic pressure facilitated by Mach cruise speeds will superimpose mechanical vibration at acoustic frequencies. Additionally, the geometric constraint to be placed on these relatively thin structures will cause conventional mechanical fatigue with compressive mean stress. A universal column buckling test frame has been configured to allow for closed-loop feedback control of cyclic mechanical, thermal, and acoustic loading. The graphical user interface (GUI) associated with this first-of-its-kind test device allows users to design cyclic load profiles that idealize the thermo-acousto-mechanical loading of critical panels. Calibration methods of individual and combined cyclic waveforms are shown. Sample waveforms are generated.

Publication Date

1-1-2015

Publication Title

56th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.2514/6.2015-1434

Socpus ID

85086054195 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/85086054195

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