Patent · US Active

Test method and fixture for obtaining material properties under biaxial loading

US9435724B2 · kind B2 · utility

0Cited by

8References

19Claims

0Family size

Assignee

The Boeing Company · US

Inventors

Russel J. Sanui · Willow View Lane, US
William P. Keith · Lakewood, US
Michael Leslie Hand · Tecate Mission Road, US

Key dates

Filing date	Jun 17, 2014
Grant date	Sep 6, 2016
Priority date	—
Expiry date	Nov 14, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG01N2203/0658
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A test method and corresponding fixture design are provided which enable loading a circular test coupon (made, e.g., of ceramic matrix composite material) to failure under biaxial loading conditions while recording strain and temperature. Biaxial loading requires approximately equal loads to be applied in two directions concurrently. The disclosed method uses liquid coolant (e.g., liquid nitrogen) to cool a ring made of metal alloy (e.g., aluminum alloy) that is disposed radially outward from and surrounds the outer edge of the test coupon. The cooled metal alloy ring contracts and compresses the test coupon until failure occurs.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.