Numerical analysis of vhcf cruciform test specimens with non-unitary biaxiality ratios
作者: Diogo MontalvãoAttila BlaskovicsPedro CostaLuís ReisManuel Freitas
作者单位: 1Department of Design and Engineering, faculty of Science and Technology, bournemouth university, united kingdom.
2Department of Mechanical Engineering, Instituto Superior Técnico, university of lisbon, Portugal.
刊名: International Journal of Computational Methods and Experimental Measurements, 2019(4), pp.327-339
来源数据库: WIT Press
DOI: 10.2495/CMEM-V7-N4-327-339
关键词: Biaxial StressesCruciform SpecimensVery High Cycle FatigueUltrasonic Testing
原始语种摘要: With the development of new materials, it is now known that there is no such thing as a fatigue endurance limit, i.e. materials do not have infi nite life when the stress level is such that there is no fracture up to 10 million (1E7) cycles. The problem of testing materials above this number of cycles is that most testing equipment operates well below 150 hz, making testing up to 1 billion (1E9) cycles or above is an impracticality. The recent developments of ultrasonic testing machines where frequencies can go as high as 20 khz or above enabled tests to be extended to these ranges in just a few days. This is known as very high cycle fatigue (VhCf). On the other hand, critical components used in engineering applications are usually subjected to multi-axial loads, as is the case of the...
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  • biaxiality 双轴性
  • cruciform 十字形的
  • impracticality 不实用
  • developed 开发
  • ratios 遗传比率
  • above 在上面
  • development 开发
  • applications 应用程序
  • analysis 分析
  • design 设计