Comparative study on submillimeter flaws in stitched T-joint carbon fiber reinforced polymer by infrared thermography, microcomputed tomography, ultrasonic c-scan and microscopic inspection

Par Conseil national de recherches du Canada

DOI	Trouver le DOI : https://doi.org/10.1117/1.OE.54.10.104109
Auteur	Rechercher : Zhang, Hai; Rechercher : Hassler, Ulf; Rechercher : Genest, Marc¹; Rechercher : Fernandes, Henrique; Rechercher : Robitaille, Francois; Rechercher : Ibarra-Castanedo, Clemente; Rechercher : Joncas, Simon; Rechercher : Maldague, Xavier
Affiliation	Conseil national de recherches du Canada. Aérospatiale
Format	Texte, Article
Sujet	Carbon fiber reinforced plastics; Computerized tomography; Defects; Fiber reinforced plastics; Microporosity; Nondestructive examination; Polymer matrix composites; Pulsed lasers; Reinforced plastics; Reinforcement; Thermography (imaging); Tomography; Ultrasonic applications; Ultrasonic testing; Carbon fiber reinforced polymer; Laser lines; Laser spot thermographies; Micro computed tomography (micro-CT); Microcomputed tomography; T-joints; Ultrasonic C-scan; X-ray computed tomography; Thermography (temperature measurement)
Résumé	Stitching is used to reduce dry-core (incomplete infusion of T-joint core) and reinforce T-joint structure. However, it may cause new types of flaws, especially submillimeter flaws. Microscopic inspection, ultrasonic c-scan, pulsed thermography, vibrothermography, and laser spot thermography are used to investigate the internal flaws in a stitched T-joint carbon fiber-reinforced polymer (CFRP) matrix composites. Then, a new microlaser line thermography is proposed. Microcomputed tomography (microCT) is used to validate the infrared results. A comparison between microlaser line thermography and microCT is performed. It was concluded that microlaser line thermography can detect the internal submillimeter defects. However, the depth and size of the defects can affect the detection results. The microporosities with a diameter of less than 54 μm are not detected in the microlaser line thermography results. Microlaser line thermography can detect the microporosity (a diameter of 0.162 mm) from a depth of 90 μm. However, it cannot detect the internal microporosity (a diameter of 0.216 mm) from a depth of 0.18 mm. The potential causes are given. Finally, a comparative study is conducted.
Date de publication	2015-10-15
Dans	Optical Engineering 54, nº 10, 104109 (15 octobre 2015).
Langue	anglais
Publications évaluées par des pairs	Oui
Numéro NPARC	21276965
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	42ac7608-43dd-415f-b4ba-7ab02c497bc9
Enregistrement créé	2015-11-10
Enregistrement modifié	2020-04-22

Date de modification :: 2024-04-19