High-cycle fatigue damage accumulation in paper
نویسندگان
چکیده
منابع مشابه
ROLE OF FOREIGN OBJECT DAMAGE ON THRESHOLDS FOR HIGH-CYCLE FATIGUE IN Ti-6Al-4V
The increasing incidence of military aircraft engine failures that can be traced to high-cycle fatigue (HCF) has prompted a reassessment of the design methodologies for HCF-critical components, such as turbine blades and disks. Because of the high-frequency vibratory loading involved, damage-tolerant design methodologies based on a threshold for no crack growth offer a preferred approach. As im...
متن کاملForeign-object damage and high-cycle fatigue: role of microstructure in Ti–6Al–4V
The objective of this study was to evaluate the influence of microstructure on the susceptibility to high-cycle fatigue (HCF) failure in Ti–6Al–4V following foreign-object damage (FOD), specifically by comparing a fine-grained bi-modal microstructure with a coarse grained lamellar microstructure. FOD was simulated by high-velocity impacts of steel spheres on a flat surface. This caused a marked...
متن کاملModel of flexural fatigue damage accumulation for cortical bone.
Analytical models that predict modulus degradation in cortical bone subjected to uniaxial fatigue loading in tension and compression are presented. On the basis of experimental observations, damage was modeled as self-limiting for tension but not for compression. These mechanistic uniaxial damage models were then developed into a model for flexural fatigue of cortical bone based on laminated be...
متن کاملForeign-object damage and high-cycle fatigue of Ti–6Al–4V
Recent high-cycle fatigue (HCF) related failures of gas-turbine jet engines have prompted a re-examination of the design methodologies for HCF-critical components, such as titanium alloy turbine blades. As foreign-object damage (FOD) from ingested debris is a key concern for HCF-related failures of such blades, the current study is focused on the role of simulated high velocity FOD in affecting...
متن کاملThe Effect of High Cycle Fatigue Damage on Toughness of En8 Grade Steel Part Ii
Fatigue of metals is a subject of practical importance because many components and structures in service are subjected to varying loads and although the average stresses are often low, local concentration of stresses do not reduce the static strength but often lead to failure by fatigue. Micro-crack formation due to fatigue is more in ferritic-pearlitic annealed steel rather than in hardened an...
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ژورنال
عنوان ژورنال: Communications Materials
سال: 2020
ISSN: 2662-4443
DOI: 10.1038/s43246-020-0025-2