Differential displacement measurement using scanning x-ray beams

被引：1

作者：

Canistraro, HA

Jordan, EH

Pease, DM

机构：

[1] Univ Hartford, Ward Coll Technol, Dept Mech Engn Technol, W Hartford, CT 06117 USA

[2] Univ Connecticut, Dept Mech Engn, Storrs, CT 06269 USA

[3] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA

[4] Univ Connecticut, Inst Mat Sci, Storrs, CT 06269 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1998年 / 69卷 / 02期

关键词：

D O I：

10.1063/1.1148681

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A noncontacting method for measuring mechanical strain between two fiducial marks has been developed for use when environmental conditions would be disruptive to methods utilizing optical light. A silicon 111 Johansson crystal is used for this application when Mo K alpha radiation is used to fluoresce fiducial markers made of yittria-stabilized zirconia, This substance is used for a thermal barrier costing in gas turbine engines and the technology for applying this material to withstand long term high temperature exposure is highly developed. The current system has a displacement repeatability of better than 0.1 mu m which is not limited by counting statistics, but rather determined by mechanical considerations. (C) 1998 American Institute of Physics.

引用

页码：452 / 456

页数：5