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

Download
  1. Get@NRC: Comparative study on submillimeter flaws in stitched T-joint carbon fiber reinforced polymer by infrared thermography, microcomputed tomography, ultrasonic c-scan and microscopic inspection (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1117/1.OE.54.10.104109
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titleOptical Engineering
ISSN0091-3286
Volume54
Issue10
Article number104109
SubjectCarbon 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)
AbstractStitching 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.
Publication date
PublisherSPIE
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace
Peer reviewedYes
NPARC number21276965
Export citationExport as RIS
Report a correctionReport a correction
Record identifier42ac7608-43dd-415f-b4ba-7ab02c497bc9
Record created2015-11-10
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)
Date modified: