High-temperature time-dependent fatigue behaviour of several engineering structural alloys

1985 ◽  
Vol 30 (1) ◽  
pp. 235-258 ◽  
Author(s):  
C. R. Brinkman
Keyword(s):  
High Temperature ◽  
Fatigue Behaviour ◽  
Time Dependent ◽  
Temperature Time

High temperature time-dependent low cycle fatigue behaviour of a type 316L(N) stainless steel

1999 ◽  
Vol 21 (1) ◽  
pp. 11-21 ◽  
Author(s):  
V.S Srinivasan ◽  
M Valsan ◽  
R Sandhya ◽  
K Bhanu Sankara Rao ◽  
S.L Mannan ◽  
...  
Keyword(s):  
Stainless Steel ◽  
High Temperature ◽  
Low Cycle Fatigue ◽  
Fatigue Behaviour ◽  
Time Dependent ◽  
Cycle Fatigue ◽  
Type 316L ◽  
Temperature Time

scholarly journals Time and Cycle Dependence in High Temperature Fatigue of Ceramic Matrix Composites

1996 ◽  
Author(s):  
Marc Steen ◽  
José-Lorenzo Vallés
Keyword(s):  
High Temperature ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Fatigue Behaviour ◽  
Time Dependent ◽  
Matrix Composites ◽  
Fibre Failure ◽  
High Temperature Fatigue ◽  
Stress Ratios ◽  
Cyclic Damage

The high temperature fatigue behaviour of two 2D reinforced ceramic matrix composites (CMCs) Is studied under high vacuum conditions. The mechanical loads imposed result in matrix cracking upon first loading, so that continued cyclic loading results in progressive interfacial debonding and/or matrix crack multiplication, as well as fibre failure. In order to investigate whether the fatigue life is mainly governed by time-dependent creep or by cyclically induced fatigue damage, a range of frequencies and two stress ratios are explored in stress controlled fatigue tests. The results obtained indicate that under pulsating fatigue (positive stress ratios or tension-tension) the material response is affected by both creep and fatigue mechanisms. The cyclic damage component gains in relative importance with increasing test frequency. Under reversed loading conditions (negative stress ratios), and depending on the creep strength mismatch between the fibres and the matrix, the time-dependent damage component can be largely suppressed, and the composite fatigue behaviour can become close to purely cycle-dependent. In both cases and for both composites fatigue failure is triggered by fibre failure.

High-Temperature Time-Dependent Gate Breakdown of p-GaN HEMTs

2021 ◽  
pp. 1-6
Author(s):  
M. Millesimo ◽  
C. Fiegna ◽  
N. Posthuma ◽  
M. Borga ◽  
B. Bakeroot ◽  
...  
Keyword(s):  
High Temperature ◽  
Time Dependent ◽  
Gan Hemts ◽  
Temperature Time
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