Testing of fracture toughness under biaxial loading

Milan Brumovsky; Dana Lauerova; Jiri Palyza

doi:10.1117/12.269804

20 March 1997 Testing of fracture toughness under biaxial loading

Milan Brumovsky, Dana Lauerova, Jiri Palyza

Proceedings Volume 2921, International Conference on Experimental Mechanics: Advances and Applications; (1997) https://doi.org/10.1117/12.269804
Event: International Conference on Experimental Mechanics: Advances and Applications, 1996, Singapore, Singapore

Abstract

Reactor pressure vessels under some special regime (e.g. pressurized thermal shock) are loaded by a strongly biaxial tensile stresses that ratio can reach even an opposite value in comparison with normal operating conditions. Pressure vessel integrity as well as its life assessment is performed on the basis of fracture mechanics where normally only uniaxial fracture toughness of materials are used as material input data. Special biaxial tests on cruciform type specimens with thickness up to 90 mm are tested in our Institute -- special testing equipment and testing methods including measurements have been developed and realized. Testing equipment with maximum loading capacity up to 1.5 MN allows to reach different biaxial loading ratios between 0 and 2. During tests, carried out mostly at low temperatures, specimens deflections, strains, load and crack opening displacement are measured and then evaluated. Biaxial loading results in some decrease in fracture toughness compared with uniaxial test results.

Citation Download Citation

Milan Brumovsky, Dana Lauerova, and Jiri Palyza "Testing of fracture toughness under biaxial loading", Proc. SPIE 2921, International Conference on Experimental Mechanics: Advances and Applications, (20 March 1997); https://doi.org/10.1117/12.269804

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