Double influence of hydrogen on fatigue crack growth in heat-resistant steels

1995 ◽  
Vol 30 (4) ◽  
pp. 403-409
Author(s):  
H. M. Nykyforchyn ◽  
O. Z. Student ◽  
I. D. Skrypnyk
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Heat Resistant ◽  
Heat Resistant Steels

K-0817 Characteristics of Fatigue Crack Growth of a Heat-resistant Fiber/Metal Laminates

2001 ◽  
Vol I.01.1 (0) ◽  
pp. 413-414
Author(s):  
Takahiko SAWADA ◽  
Ippei SUSUKI ◽  
Yasumasa HAMAGUCHI ◽  
Hiroki YANAGAWA
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Fiber Metal Laminates ◽  
Heat Resistant ◽  
Fiber Metal

Effect of single plastic prestraining on crack resistance. 1. The rate of fatigue crack growth in heat-resistant steel

1988 ◽  
Vol 20 (12) ◽  
pp. 1552-1558 ◽  
Author(s):  
V. T. Troshchenko ◽  
P. V. Yasnii ◽  
V. V. Pokrovskii ◽  
B. T. Timofeev ◽  
V. A. Fedorova
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Resistance ◽  
Crack Growth ◽  
Resistant Steel ◽  
Heat Resistant Steel ◽  
Heat Resistant ◽  
Plastic Prestraining

scholarly journals Effect of morphology of primary a on fatigue crack propagation resistance in a near a heat resistant Titanium alloy

2020 ◽  
Vol 321 ◽  
pp. 11030
Author(s):  
Y. Sumi ◽  
H. Takabayashi ◽  
Hangyue Y. Li ◽  
P. Bowen
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Growth Rates ◽  
Fatigue Threshold ◽  
Fatigue Crack Growth Resistance ◽  
Crack Propagation Resistance ◽  
Heat Resistant ◽  
Paris Region ◽  
Crack Growth Rates

DAT54 is a new near a heat resistant Ti alloy developed for disk applications in the compressor part of jet engines. DTA54 with bimodal microstructure shows a good balance of fatigue strength and creep life, and performs better than Ti-6242s up to 873 K. However, the influence of microstructure on properties, especially the effect of the morphology of primary a on fatigue crack growth resistance is not understood. In this study, samples with different types of microstructure were prepared by applying different heat treatment temperatures, and the influence of microstructure on fatigue crack growth properties at ambient temperature and 823 K was investigated. Influence of environment was also investigated by testing in vacuum and in air condition. Acicular microstructure shows lower fatigue crack growth rates in Paris’ region than the bimodal microstructures at 823 K. For the bimodal structures, aspect ratio of primary a do not have apparent influence on fatigue crack growth rates in Paris’ region, whereas fatigue threshold (DKth) seems to be affected by the morphology of primary a.

Effect of Internal Damage on Fatigue Crack Growth of Heat-resistant Fiber/Metal Ti/Graphite

2002 ◽  
Vol 2002 (0) ◽  
pp. 315-316
Author(s):  
Takahiko SAWADA ◽  
Ippei SUSUKI ◽  
Yasumasa HAMAGUCHI ◽  
Masato NOMURA
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Internal Damage ◽  
Heat Resistant ◽  
Fiber Metal

A discrete dislocation analysis of fatigue crack growth

2001 ◽  
Vol 11 (PR5) ◽  
pp. Pr5-69-Pr5-75
Author(s):  
V. S. Deshpande ◽  
H. H.M. Cleveringa ◽  
E. Van der Giessen ◽  
A. Needleman
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Discrete Dislocation

Fatigue Investigation of Elastomeric Structures

2010 ◽  
Vol 38 (3) ◽  
pp. 194-212 ◽  
Author(s):  
Bastian Näser ◽  
Michael Kaliske ◽  
Will V. Mars
Keyword(s):  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Material Behavior ◽  
Period Effect ◽  
Numerical Representation ◽  
Material Force ◽  
Strain Behavior ◽  
Dissipative Effects ◽  
Elastomeric Materials

Abstract Fatigue crack growth can occur in elastomeric structures whenever cyclic loading is applied. In order to design robust products, sensitivity to fatigue crack growth must be investigated and minimized. The task has two basic components: (1) to define the material behavior through measurements showing how the crack growth rate depends on conditions that drive the crack, and (2) to compute the conditions experienced by the crack. Important features relevant to the analysis of structures include time-dependent aspects of rubber’s stress-strain behavior (as recently demonstrated via the dwell period effect observed by Harbour et al.), and strain induced crystallization. For the numerical representation, classical fracture mechanical concepts are reviewed and the novel material force approach is introduced. With the material force approach at hand, even dissipative effects of elastomeric materials can be investigated. These complex properties of fatigue crack behavior are illustrated in the context of tire durability simulations as an important field of application.

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