Measuring the stability of three copper alloys

Theodore D. Doiron; John R. Stoup; Patricia Snoots; Grace Chaconas

doi:10.1117/12.22862

1 November 1990 Measuring the stability of three copper alloys

Theodore D. Doiron, John R. Stoup, Patricia Snoots, Grace Chaconas

Proceedings Volume 1335, Dimensional Stability; (1990) https://doi.org/10.1117/12.22862
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

In this paper we report measurements of the dimensional stability of samples of brass, beryllium copper, and tellurium copper taken over an 18 month time span. Of the materials, brass was the most stable, decreasing slightly in length at the rate of 1 part per million per year (ppm/y) with an uncertainty (3a) of about 1 ppm/y. Tellurium copper shrank at an average rate of 2.Li ppm/y and beryllium copper, the least stable, at the rate of 5.8 ppm/y. To measure the instrumental uncertainty 4 samples of each material were measured, and the measurement scheme was designed to detect and correct for thermal drift ,during measurements. The experiment design problems associated with these measurements and the associated uncertainties are discussed.

Citation Download Citation

Theodore D. Doiron, John R. Stoup, Patricia Snoots, and Grace Chaconas "Measuring the stability of three copper alloys", Proc. SPIE 1335, Dimensional Stability, (1 November 1990); https://doi.org/10.1117/12.22862

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available