ZERODUR: new results on bending strength and stress corrosion

Peter Hartmann

doi:10.1117/12.893303

14 September 2011 ZERODUR: new results on bending strength and stress corrosion

Peter Hartmann

Proceedings Volume 8146, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts V; 81460P (2011) https://doi.org/10.1117/12.893303
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

ZERODUR® strength data and information are required for the design of structures, which will be subject to mechanical loads throughout their lifetime or at least during some periods thereof such as lightweight mirrors for space telescopes. Comparison of data acquired twenty years ago with recent ones show astonishing reproducibility. An influence of the specimen preparation process on the width of the breakage stress distribution generally leading to higher values has been observed. New data are available for diamond grain D25 fine ground surface condition. The stress corrosion coefficient, an important parameter needed to calculate the long time behavior of structures subject to tensile stress in their surface has been determined from breakage data sets obtained with different stress load increase rates. Conditioning of ZERODUR® specimen with stress free storage under varying humidity and humidity exposure times has shown no influence on strength.

Citation Download Citation

Peter Hartmann "ZERODUR: new results on bending strength and stress corrosion", Proc. SPIE 8146, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts V, 81460P (14 September 2011); https://doi.org/10.1117/12.893303

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