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Applied Sciences
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Nondestructive Testing of Composite Materials
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Nondestructive Testing of Composite Materials

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (20 March 2024) | Viewed by 4128

Special Issue Editor

Prof. Dr. Jaime Batista dos Santos

E-Mail Website
Guest Editor
Department of Electrical and Computer Engineering, University of Coimbra, 3030-290 Coimbra, Portugal
Interests: non-destructive testing by ultrasound; composite inspection; biomedical ultrasound; development of NDE equipment; defect characterization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue (SI) invites researchers to present new scientific achievements related to “Nondestructive Testing of Composite Materials”. Advances in the manufacturing processes have led to a great increase in applications of composites in industries such as aerospace, automotive, wind turbines, defense, sport, civil engineering, and music due to cost-effectiveness and superior specific properties. Thus, robust and reliable non-destructive testing (NDT) of composites is essential to reduce safety concerns and maintenance costs. There have been various NDT methods based on different principles for quality assurance during the whole lifecycle of a composite product.

Authors are encouraged to submit contributions on NDT of composite materials applied in the abovementioned areas or others, using methodologies and approaches encompassing:

  • Acoustic emission;
  • Ultrasonic testing;
  • Infrared thermography;
  • Terahertz testing;
  • Shearography;
  • Digital image correlation;
  • X-ray and neutron imaging;
  • Others.

Prof. Dr. Jaime Batista dos Santos
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • composites
  • NDT
  • material characterization
  • ultrasound
  • terahertz
  • X-ray
  • thermography

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Published Papers (2 papers)

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Research

12 pages, 7327 KiB  
Article
Non-Destructive Evaluation of In-Plane Waviness in Carbon Fiber Laminates Using Eddy Current Testing
by Matthew Newton, Tonoy Chowdhury, Ian Gravagne and David Jack
Appl. Sci. 2023, 13(10), 6009; https://doi.org/10.3390/app13106009 - 13 May 2023
Cited by 8 | Viewed by 1891
Abstract
Non-destructive detection of the in-plane waviness of carbon fiber-reinforced plastic (CFRP) laminates is of interest in a wide variety of industries, as wrinkles and other fiber alignment defects significantly impact the mechanical performance of the composites. This work demonstrates a method to detect [...] Read more.
Non-destructive detection of the in-plane waviness of carbon fiber-reinforced plastic (CFRP) laminates is of interest in a wide variety of industries, as wrinkles and other fiber alignment defects significantly impact the mechanical performance of the composites. This work demonstrates a method to detect in-plane wrinkles on a 5-ply unidirectional CFRP laminate with a customized eddy current testing (ECT) system. The results show that the ECT system is effective in detecting and quantifying in-plane waviness, and the results are compared to conventional X-ray computed tomography (CT) and ultrasonic testing (UT) methods. Using the anisotropic conductive nature of the aligned CFRP lamina, the ECT system was able to clearly detect throughout the part changes in the local fiber orientation, wave tangent angle, and wrinkle width. Full article
(This article belongs to the Special Issue Nondestructive Testing of Composite Materials)
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18 pages, 7945 KiB  
Article
Mechanical Behaviour of a Metal-CFRP-Hybrid Structure and Its Components under Quasi-Static and Dynamic Load at Elevated Temperature
by Hendrik Jost, Felix Grossmann and Hans-Georg Herrmann
Appl. Sci. 2022, 12(24), 12824; https://doi.org/10.3390/app122412824 - 14 Dec 2022
Viewed by 1621
Abstract
Hybrid materials containing a light metal and CFRP are capable to make a relevant contribution in lightweight design and thereby in reducing greenhouse gases causing global warming. An aluminium CFRP-hybrid specimen with a thermoplastic interlayer that is suitable for application for the A-, [...] Read more.
Hybrid materials containing a light metal and CFRP are capable to make a relevant contribution in lightweight design and thereby in reducing greenhouse gases causing global warming. An aluminium CFRP-hybrid specimen with a thermoplastic interlayer that is suitable for application for the A-, B-, or C-pillar in a car is investigated in this work regarding the mechanical behaviour due to temperature variation. For this purpose, quasi-static as well as dynamic tensile tests are carried out not only for those hybrid specimens but also for their respective single-material components. Those are supported by various non-destructive testing (NDT) techniques such as thermography and CT-scans of X-ray tomography. The examination of the single materials as well as the hybrid specimens gives us the possibility to understand if a change in the damage process of the hybrid is caused by one of the single materials or the interaction of them. The use of the NDT techniques in combination with the mechanical experiments allows us to obtain a deeper look at the mechanisms causing the respective damage. It stands out that temperature changes affect the damage mechanisms in the hybrid significantly without having great influence on the single materials. In quasistatic testing, the maximum displacement of the hybrid specimens rises at elevated temperature, and in dynamic testing the initial stiffness and the sustained cycles decline significantly. It therefore can be concluded that the interfaces inside the hybrids are affected by temperature changes and play a major role concerning the damage mechanisms. The pure knowledge about the temperature behaviour of single materials is not sufficient for anticipating the behaviour of hybrid specimens under these restrictions. Full article
(This article belongs to the Special Issue Nondestructive Testing of Composite Materials)
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