THE DETERMINATION OF R-CURVES FOR SHORT, WIDE CENTRE CRACKED PANELS OF ALUMINIUM ALLOY SHEET
Sutton, G. R. ; Wheeler, C. ; Thomas, C. E. ; Wilson, R. N.
Oxford, UK : Blackwell Publishing Ltd
Published 1991
Oxford, UK : Blackwell Publishing Ltd
Published 1991
| ISSN: |
1460-2695
|
|---|---|
| Source: |
Blackwell Publishing Journal Backfiles 1879-2005
|
| Topics: |
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
|
| Notes: |
Abstract— The feasibility of conducting an R–curve test on centre crack test pieces with a length/width ratio of between 1.3 and 0.25 has been investigated. To allow for the undefined mixed mode loading present with short, wide test pieces, two experimental methods of determining the geometric correction for the stress intensity factor have been proposed and compared. Also an experimental determination of the compliance calibration used to calculate the effective crack length has been made for these geometries. These methods have been evaluated by conducting R-curve tests on clad 2024-T3 aluminium alloy centre crack sheet test pieces. 2 m and 760 mm wide panels with length/width ratios of 〉 1.3, 0.5 and 0.25 were tested. The derived R-curves agreed well for both widths and for length/width ratios as low as 0.5.
|
| Type of Medium: |
Electronic Resource
|
| URL: |