ISSN: 1945-7553
CODEN: JTEVAB
Published Online: 24 August 2011
Page Count: 8

Test System for Elevated Temperature Characterization of Thin Metallic Sheets

Morrissey, Ryan J.
US Air Force Research Laboratory,

John, Reji
US Air Force Research Laboratory,

Ruddell, Mark J.
Univ. of Dayton Research Institute,

Blosser, Phil E.
Univ. of Dayton Research Institute,

Buchanan, Dennis J.
Univ. of Dayton Research Institute,

(Received 5 October 2010; accepted 24 June 2011)

Abstract

Thin gage Ni-based superalloy materials are being targeted for hypersonic applications up to 1100 °C. To achieve an optimized system design, standard mechanical behavior data on these materials are needed under a range of loading conditions such as tensile, creep, and fatigue at representative temperatures. These tests require direct measurements of displacements on specimens. In order to meet this need, a test system has been developed as part of a comprehensive in-house program to advance state-of-the-art testing capabilities for thin foils and very thin sheets. The test system was developed using a conventional hydraulic load frame outfitted with specialized capabilities, and was designed for determining material properties on a macro-scale. Specimen thicknesses used in this study range from 127-508 μm, with specimen lengths on the order of 150 mm. This paper outlines the developmental process, including unique challenges, along with the system validation and some preliminary data.

Keywords:
mechanical testing, elevated temperature, thin gage

Paper ID: JTE103460
DOI: 10.1520/JTE103460
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