Shear Modulii For Cellular Foam Materials And Its Influence On The Design Of Light-Weight Mirrors

R. Stone; D. Vukobratovich; R. Richard

doi:10.1117/12.962928

9 November 1989 Shear Modulii For Cellular Foam Materials And Its Influence On The Design Of Light-Weight Mirrors

R. Stone, D. Vukobratovich, R. Richard

Proceedings Volume 1167, Precision Engineering and Optomechanics; (1989) https://doi.org/10.1117/12.962928
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

Abstract

New demands on the performance of light-weight optical systems have led to the design and development of light-weight foam core mirrors for various applications. Foam core mirrors offer the advantage of additional weight savings without sacrificing optical performance. The design of a foam core mirror is complex and the optical performance depends largely upon the various mechanical design parameters. Although the elastic modulus, E, of the core material is important, the optical performance of light-weight mirrors is highly sensitive to the core shear modulus, G. Therefore, to effectively design a light-weight foam core mirror, the value of G for the core material must be established with a high level of confidence. This paper addresses the theoretical analysis and test method utilized to accurately determine the shear modulus for cellular foam materials and illustrates the significance of G as a parameter in the design of light-weight mirrors.

Citation Download Citation

R. Stone, D. Vukobratovich, and R. Richard "Shear Modulii For Cellular Foam Materials And Its Influence On The Design Of Light-Weight Mirrors", Proc. SPIE 1167, Precision Engineering and Optomechanics, (9 November 1989); https://doi.org/10.1117/12.962928

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