Journal Published Online: 02 August 2023
Volume 12, Issue 2

Very High Cycle Fatigue Behavior of Additively Manufactured Metals Using Ultrasonic Fatigue Testing: A Critical Assessment of Potentials and Challenges

CODEN: MPCACD

Abstract

Ultrasonic fatigue testing has been extensively employed to assess the mechanical behavior of most engineering materials in the very high cycle fatigue (VHCF) regime (i.e., the number of cycles to failure beyond 107 cycles). Additionally, with the significant growth of interest in additively manufactured (AM) materials, ultrasonic fatigue testing has increasingly been utilized to evaluate the VHCF performance of various AM metallic materials. In this article, the potential and drawbacks of this testing method for AM metals are presented. Obtaining the ultralong life fatigue behavior in a reasonable time frame (i.e., rapid data generation), assessing the cyclic strain rate (frequency) sensitivity and evaluating the contribution of inevitable AM process-induced defects (i.e., porosity, unmelted powders, lack of fusion, etc.) are considered tangible opportunities in employing ultrasonic fatigue for AM materials. However, lack of test standards, frequency effect for certain material types, and small risk volume of the VHCF specimen that may not be a true representative of AM parts can be considered the main challenges of ultrasonic fatigue testing to obtain the VHCF response of AM metals. This article also reviews several research topics associated with the VHCF of AM metals that can potentially shape the future of research in this field for various applications.

Author Information

Haghshenas, Meysam
Failure, Fracture and Fatigue Laboratory (F3L), Department of Mechanical, Industrial and Manufacturing Engineering, The University of Toledo, Toledo, OH, USA
Simsiriwong, Jutima
School of Engineering, University of North Florida, Jacksonville, FL, USA
Pages: 11
Price: $25.00
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Details
Stock #: MPC20220090
ISSN: 2379-1365
DOI: 10.1520/MPC20220090