文章基本信息

标题：Effect of Natural Aging and Fatigue Crack Propagation Rate on Welded and Non-Welded Aluminum Alloy (AA2219˗T87)
本地全文：下载
作者：Hassan Elahi
期刊名称：Advances in Science and Technology Research Journal
印刷版ISSN：2080-4075
电子版ISSN：2299-8624
出版年度：2019
卷号：13
期号：3
页码：129-143
DOI：10.12913/22998624/110737
语种：English
出版社：Society of Polish Mechanical Engineers and Technicians
摘要：Aluminum alloys are widely used for fabrication of aircraft, civil structures, and space vehicles. Fatigue life consideration of a material is the most important design criteria in many such critical applications. In this researchwork, a widely used Aluminum alloy AA2219-T87 was TIG welded using AA2319 as a fller material. The eﬀectof natural aging on Fatigue Crack Propagation Rate (FCPR) of welded and non-welded compact tension (CT)specimens (AA2219˗T87) is studied. The relationship between stress intensity factor (∆K) and crack ratio (a/W)for diﬀerent value of the crack length in base metal and the welded zone is presented. Paris curves for both weldedand non-welded specimens and compared to study the eﬀect of natural aging (NA) on FCGR and compared withnon-aged specimens. The results obtained provide a base for the development of Structural Health Monitoringsystems for the propagation of crack growth in such components.
关键词：natural aging; AA2219; crack growth rate; structure health; fatigue; microstructure; stress intensity factor