Inspection benchmarking of Fiber Reinforced Polymers produced by Additive Manufacturing

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

17 Downloads (Pure)

Abstract

The production of Polymer Matrix Composites (PMCs) through Additive Manufacturing (AM) presents new defects, and the detection of these is crucial for proper functioning. Non-destructive testing (NDT) techniques such as terahertz (THz), air-coupled ultrasounds, and active thermography are fast, automatable, non-invasive, and noncontact inspection methods. The aim of this study is to investigate the use of NDT techniques for detecting defects in PMCs produced by AM. Six samples were produced using polylactic acid (PLA) as the base material and reinforced with continuous fibers of Kevlar, glass, and carbon. Two types of samples were created: one with a full-thickness reinforcement defect in a specific area and the other with a partial reinforcement defect, with a layer of fibers missing in the same area. The samples were then tested using three NDT techniques: THz, non-contact ultrasonic, and active thermography. The results showed that THz was only able to detect the defect in the carbon fiber sample with full-thickness reinforcement, ultrasonic testing was able to detect the defects in Kevlar and carbon fiber samples with missing three layers of fibers, and active thermography was the most reliable technique, detecting all samples with missing three layers of fibers as well as partial reinforcement defects.
Original languageEnglish
Title of host publicationProceedings of the 13th European Conference on Non-Destructive Testing (ECNDT) from 3 to -7 of July 2023 in Lisbon, Portugal
Number of pages6
Volume1
Edition1
DOIs
Publication statusPublished - 1 Aug 2023
EventProceedings of the 13th European Conference on Non-Destructive Testing from 3 to -7 of July 2023 in Lisbon, Portugal - Lisbon, Portugal
Duration: 3 Jul 20237 Jul 2023

Publication series

NameResearch and Review Journal of Nondestructive Testing
ISSN (Print)2941-4989

Conference

ConferenceProceedings of the 13th European Conference on Non-Destructive Testing from 3 to -7 of July 2023 in Lisbon, Portugal
Abbreviated titleECNDT 2023
Country/TerritoryPortugal
CityLisbon
Period3/07/237/07/23

Keywords

  • Fiber reinforced polymeric composite
  • Active Transient Thermography
  • Air-coupled ultrasound
  • Terahertz

Fingerprint

Dive into the research topics of 'Inspection benchmarking of Fiber Reinforced Polymers produced by Additive Manufacturing'. Together they form a unique fingerprint.

Cite this