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Title: Acoustic emission monitoring of crack propagation in additively manufactured and conventional titanium components

Journal Article · · Mechanics Research Communications

We report that additive manufacturing (AM) is a novel and innovative production technology that can produce complex and lightweight engineering products. In AM components, as in all engineering materials, fatigue is considered as one of the principle causes of unexpected failure. In order to detect, localise and characterise cracks in various material components and metals, acoustic emission (AE) is used as a non-destructive monitoring technique. One of the main advantages of AE is that it can be also used for dynamic damage characterisation and specifically for crack propagation monitoring. In this research, we use AE to monitor the fatigue crack growth behaviour of Ti6Al4V components under four-point bending. The samples were produced by means of AM as well as conventional material. Notched and unnotched specimens were investigated with respect to the crack severity and crack detection using AE. The main AE signal parameters –such as cumulative events, hits, duration, average frequency and rise time– were evaluated and indicate sensitivity to damage propagation in order to lead to a warning against the final fracture occurrence. Finally, this is the first time that AE is applied in AM components under fatigue.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1415387
Report Number(s):
LA-UR-17-24367; TRN: US1800788
Journal Information:
Mechanics Research Communications, Vol. 84, Issue C; ISSN 0093-6413
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 33 works
Citation information provided by
Web of Science

References (14)

Progress in structural materials for aerospace systems11The Golden Jubilee Issue—Selected topics in Materials Science and Engineering: Past, Present and Future, edited by S. Suresh. journal November 2003
On the fatigue crack growth behavior in 316L stainless steel manufactured by selective laser melting journal April 2014
Cracking behavior and mechanical properties of austenitic stainless steel parts produced by laser metal deposition journal March 2013
Residual stress via the contour method in compact tension specimens produced via selective laser melting journal September 2014
A study of the microstructural evolution during selective laser melting of Ti–6Al–4V journal May 2010
Fatigue of Ti6Al4V Structural Health Monitoring Systems Produced by Selective Laser Melting journal February 2016
Fatigue of structures and materials in the 20th century and the state of the art journal August 2003
Evaluation of SHM System Produced by Additive Manufacturing via Acoustic Emission and Other NDT Methods journal October 2015
Classification of cracking mode in concrete by acoustic emission parameters journal April 2011
On hydrogen-induced Vickers indentation cracking in high-strength steel journal March 2010
Acoustic emission for fatigue damage characterization in metal plates journal March 2011
Monitoring mechanical damage in structural materials using complimentary NDE techniques based on thermography and acoustic emission journal September 2012
Acoustic emission monitoring of fatigue crack propagation journal June 2003
Feasibility study on integrated structural health monitoring system produced by metal three-dimensional printing journal September 2015

Cited By (3)

Study of the Tensile Damage of 321 Stainless Steel for Solar Thermal Power Generation by Acoustic Emission journal January 2020
Scale Effect on the Anisotropy of Acoustic Emission in Coal journal December 2018
Design and Optimization of an MFL Coil Sensor Apparatus Based on Numerical Survey journal November 2019