Development of Cyclic Fatigue Degradation Criteria for Piezoelectric Ceramic Components

压电陶瓷元件循环疲劳退化标准的制定

• 批准号: DP0558596
• 负责人: Prof Mark Hoffman
• 金额: $ 24.28万
• 依托单位: The University of New South Wales
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2005
• 资助国家: 澳大利亚
• 起止时间: 2005-01-01 至 2009-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0558596
• 关键词: Development; Cyclic; Fatigue; Degradation; Criteria

Piezoelectric ceramics are widely used in advanced engineering applications such as actuators in the automotive industry, sonars for submarine mineral exploration and defence, and a broad range of medical devices, e.g. ultrasound probes. The reliable operational lifetime of these devices is, however, severely limited because they suffer cyclic fatigue leading to both degradation in performance and device failure. The proposed project seeks to develop an understanding of the mechanisms of fatigue and develop a design model for engineers such that piezoelectric ceramic devices can be operated for longer periods with higher levels of reliability.

压电陶瓷被广泛应用于先进的工程应用，如汽车工业中的致动器，海底矿产勘探和防御的声纳，以及广泛的医疗设备，如超声探头。然而，这些器件的可靠工作寿命受到严重限制，因为它们遭受循环疲劳，导致性能下降和器件故障。拟议的项目旨在加深对疲劳机理的理解，并为工程师开发一种设计模型，使压电陶瓷器件能够以更高的可靠性更长的时间运行。