Minimum strain rate and primary transient creep analysis of a fine structure orthorhombic titanium aluminide

1996 ◽  
Vol 34 (6) ◽  
pp. 1005-1012 ◽  
Author(s):  
R.W. Hayes
1969 ◽  
Vol 12 (54) ◽  
pp. 1270-1278 ◽  
Author(s):  
Sumio MURAKAMI ◽  
Shuhei IWATSUKI

1995 ◽  
Vol 37 (11) ◽  
pp. 1179-1202 ◽  
Author(s):  
N Ogbonna ◽  
N.A Fleck ◽  
A.C.F Cocks

1989 ◽  
Vol 111 (2) ◽  
pp. 144-148 ◽  
Author(s):  
B. D. Harper

This study explores several possibilities for a correspondence in the behavior of ice at failure during uniaxial creep (constant stress) and strength (constant strain rate) experiments. The usual notion of failure in ice is employed (i.e., the occurrence of a minimum strain rate during a creep test and a peak or maximum stress during a strength test), and the behavior at failure is discussed in terms of a recently proposed nonlinear viscoelastic constitutive model for ice. It is demonstrated that no correspondence between creep and strength data can be expected in general; however, several approximate interrelationships do occur for the experimentally motivated special case of a constant (independent of stress and strain rate) failure strain.


1988 ◽  
Vol 11 ◽  
pp. 100-103 ◽  
Author(s):  
Renji Naruse ◽  
Fumio Okuhira ◽  
Hirokazu Ohmae ◽  
Kunio Kawada ◽  
Masayoshi Nakawo

Measurements of the bore-hole diameter were made with three-contact-point calipers from the shallow layer to a depth of 700 m at Mizuho Station, East Antarctica, in 1984–86. The minimum strain-rate (i.e. secondary creep rate) of the bore-hole closure was estimated from the observed creep curve at each depth. A relation between stress and strain-rate was deduced for a temperature of −35°C and a stress range from 0.8 to 1.65 MN m−2, as where is the effective strain-rate (s−1) and τ is the effective shear stress (MN m−2). This result shows that, for comparable overburden stresses and temperature, the bore-hole closure rates at Mizuho Station are higher than those measured in bore holes at Byrd Station and in the Northern Hemisphere ice caps (Paterson 1977).


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