Despite continuous technological advances in additive manufacturing, the lack of non-destructive inspection techniques during the manufacturing process is a limit for the industrial breakthroughs. Additive manufacturing is mainly used in industrial sectors where the zero defect target is crucial. The inclusion of the integrity assessment into the additive manufacturing process would allow corrective actions to be performed before the component is completed. To this end, the development of in-process monitoring and processing techniques is of great interest.This work proposes and compares two remote non-destructive inspection techniques: laser ultrasound and laser thermography. The two techniques are evaluated on Inconel samples with laser drilling holes to establish their sensitivity. Experimental results show that those discontinuities are efficiently detected with both techniques. The remote inspection by optical methods would allow the integration of the evaluation system into the additive manufacturing equipment, thus allowing continuous monitoring throughout the entire production process. Potential benefits and limitations of the two techniques are discussed. Copyright (C) 2018 The Authors. Published by Elsevier B.V.

Cerniglia, D., Montinaro, N. (2018). Defect Detection in Additively Manufactured Components: Laser Ultrasound and Laser Thermography Comparison. PROCEDIA STRUCTURAL INTEGRITY, 8, 154-162 [10.1016/j.prostr.2017.12.016].

Defect Detection in Additively Manufactured Components: Laser Ultrasound and Laser Thermography Comparison

Cerniglia, Donatella
;
Montinaro, Nicola
2018-01-01

Abstract

Despite continuous technological advances in additive manufacturing, the lack of non-destructive inspection techniques during the manufacturing process is a limit for the industrial breakthroughs. Additive manufacturing is mainly used in industrial sectors where the zero defect target is crucial. The inclusion of the integrity assessment into the additive manufacturing process would allow corrective actions to be performed before the component is completed. To this end, the development of in-process monitoring and processing techniques is of great interest.This work proposes and compares two remote non-destructive inspection techniques: laser ultrasound and laser thermography. The two techniques are evaluated on Inconel samples with laser drilling holes to establish their sensitivity. Experimental results show that those discontinuities are efficiently detected with both techniques. The remote inspection by optical methods would allow the integration of the evaluation system into the additive manufacturing equipment, thus allowing continuous monitoring throughout the entire production process. Potential benefits and limitations of the two techniques are discussed. Copyright (C) 2018 The Authors. Published by Elsevier B.V.
2018
Settore ING-IND/14 - Progettazione Meccanica E Costruzione Di Macchine
AIAS2017 - 46TH CONFERENCE ON STRESS ANALYSIS AND MECHANICAL ENGINEERING DESIGN
Pisa, Italy
6-9 settembre 2017
46°
Cerniglia, D., Montinaro, N. (2018). Defect Detection in Additively Manufactured Components: Laser Ultrasound and Laser Thermography Comparison. PROCEDIA STRUCTURAL INTEGRITY, 8, 154-162 [10.1016/j.prostr.2017.12.016].
File in questo prodotto:
File Dimensione Formato  
2018 Procedia Structural Integrity.pdf

accesso aperto

Tipologia: Versione Editoriale
Dimensione 1.14 MB
Formato Adobe PDF
1.14 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/336595
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 49
  • ???jsp.display-item.citation.isi??? 36
social impact