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Proceedings Paper

Optical transmission scanning for damage quantification in impacted GFRP composites
Author(s): Anton Khomenko; Oleksii Karpenko; Ermias G. Koricho; Mahmoodul Haq; Gary L. Cloud; Lalita Udpa
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Paper Abstract

Glass fiber reinforced polymer (GFRP) composites constitute nearly 90% of the global composites market and are extensively used in aerospace, marine, automotive and construction industries. While their advantages of lightweight and superior mechanical properties are well explored, non-destructive evaluation (NDE) techniques that allow for damage/defect detection and assessment of its extent and severity are not fully developed. Some of the conventional NDE techniques for GFRPs include ultrasonics, X-ray, IR thermography, and a variety of optical techniques. Optical methods, specifically measuring the transmission properties (e.g. ballistic optical imaging) of specimens, provide noninvasive, safe, inexpensive, and compact solutions and are commonly used in biomedical applications. In this work, this technique is adapted for rapid NDE of GFRP composites. In its basic form, the system for optical transmission scanning (OTS) consists of a light source (laser diode), a photo detector and a 2D translation stage. The proposed technique provides high-resolution, rapid and non-contact OT (optical transmittance)-scans, and does not require any coupling. The OTS system was used for inspection of pristine and low-velocity impacted (damaged) GFRP samples. The OT-scans were compared with conventional ultrasonic C-scans and showed excellent agreement but with better resolution. Overall, the work presented lays the groundwork for cost-effective, non-contact, and rapid NDE of GFRP composite structures.

Paper Details

Date Published: 8 April 2016
PDF: 11 pages
Proc. SPIE 9804, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2016, 98040R (8 April 2016); doi: 10.1117/12.2216115
Show Author Affiliations
Anton Khomenko, Composite Vehicle Research Ctr. (United States)
Oleksii Karpenko, Michigan State Univ. (United States)
Ermias G. Koricho, Composite Vehicle Research Ctr. (United States)
Mahmoodul Haq, Composite Vehicle Research Ctr. (United States)
Michigan State Univ. (United States)
Gary L. Cloud, Composite Vehicle Research Ctr. (United States)
Lalita Udpa, Michigan State Univ. (United States)

Published in SPIE Proceedings Vol. 9804:
Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, and Civil Infrastructure 2016
Tzuyang Yu; Andrew L. Gyekenyesi; Peter J. Shull; H. Felix Wu, Editor(s)

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