A tensile creep-testing apparatus for ceramic materials using simple knife-edge universal joints

1972 ◽  
Vol 5 (5) ◽  
pp. 465-467 ◽  
Author(s):  
R M Morrell
1989 ◽  
Vol 72 (9) ◽  
pp. 1610-1614 ◽  
Author(s):  
Daniel F. Carroll ◽  
Sheldon M. Wiederhorn ◽  
D. E. Roberts
Keyword(s):  

2016 ◽  
Vol 835 ◽  
pp. 535-541
Author(s):  
Guan Guo Liu ◽  
Guo Rong Zhang ◽  
Yun Sheng Zhang ◽  
Lu Lu

A set of concrete tensile creep testing apparatus was constructed. The tensile creep characteristics of concrete under different loading ages (1d, 3d and 7d), different water-binder ratio (0.29, 0.33 and 0.37) and different fly ash proportion (0%, 20% and 40%) were researched. The results show that tensile creep increases with increasing of water-binder ratio obviously as well as with decreasing of loading ages. The tensile creep is inhibited by addition of fly ash, and the inhibition effect increases with the increase of fly ash proportion. Free shrinkage is counteracted 42%~62% by tensile creep. The internal tension of concrete is effectively relieved so that the possibility of cracking of concrete is decreased at early ages.


2017 ◽  
Vol 34 (5-6) ◽  
pp. 425-433 ◽  
Author(s):  
Deniz Taygun Erten ◽  
Thanh Tuan Nguyen ◽  
Tae Min Jeong ◽  
Kee Bong Yoon

1974 ◽  
Vol 9 (3) ◽  
pp. 141-145 ◽  
Author(s):  
P E R Mucci ◽  
R M Ogorkiewicz

A testing machine developed for the study of the deformational behaviour of plastics under bending loads complements high-accuracy tensile-creep testing machines and provides a more appropriate means for the testing of brittle fibre-plastics composites and plastics sandwich structures. The machine is suitable for applying constant loads and automatically recording the deflections of specimens at several points over periods of up to three months.


Author(s):  
Kenneth C. Liu ◽  
Christopher O. Stevens ◽  
Charles R. Brinkman ◽  
Nicholas E. Holshauser

A technique to achieve stable and uniform uniaxial compression is offered for creep testing of advanced ceramic materials at elevated temperatures, using an innovative self-aligning load-train assembly. Excellent load-train alignment is attributed to the inherent ability of a unique hydraulic universal coupler to maintain self-aligning. Details of key elements, design concept, and principles of operation of the self-aligning coupler are described. A method of alignment verification using a strain-gaged specimen is then discussed. Results of verification tests indicate that bending below 1.5% is routinely achievable with the use of the load-train system. A successful compression creep test is demonstrated using a dumb-bell shaped silicon nitride specimen tested at 1300°C for a period in excess of 4000 h.


Sign in / Sign up

Export Citation Format

Share Document