Doctoral Thesis

Eddy Current Probe Design and its Application on Aircraft Composite Structures

Final Thesis 7.22 MB Summary of Thesis 2.22 MB

Author of thesis: Ing. Marie Boháčová, Ph.D.

Acad. year: 2017/2018

Supervisor: doc. Ing. Pavel Mazal, CSc.

Reviewers: prof. Ing. Karel Hájek, CSc., Ing. Bernard Kopec, CSc.

Abstract:

This thesis deals with design of an eddy current transducer which enables non-destructive inspection of composite aircraft structures primarily carbon fiber reinforced plastic (CFRP) in areas of manufacture and maintenance. The design of the transducer is based on analytical-experimental approach and its electrical and mechanical parameters were optimized to ensure a good signal to noise ratio at the six composite samples. These samples contain artificial discontinuities in the form of various types of defects. These defects are simulating the various types of damage created in the aircraft structure, especially delamination or thickness changes of composite materials. The experimental measurements, data collection and non-destructive evaluation were performed during the period. The result of this work is functional eddy current probe, which is reliably able to detect some damage of the carbon composite structures to the depth of 3,9 mm.

Keywords:

Composite structure, CFRP, eddy current, NDT, probe design, damage

Date of defence

05.12.2017

Result of the defence

Defended (thesis was successfully defended)

znamkaPznamka

Process of defence

Základním přínosem práce je návrh a realizace sondy, která umožňuje testovat některé uhlíkové kompozitní materiály metodou vířivých proudů. Významnou součástí práce je i experimentální stanovení přesnosti a rozlišitelnosti defektů touto metodou.

Language of thesis

Czech

Faculty

Department

Study programme

Physical and Materials Engineering (D4F-K)

Field of study

Physical and Materials Engineering (D-FMI)

Supervisor’s report
doc. Ing. Pavel Mazal, CSc.

viz. posudek v pdf.
File inserted by supervisor Size
Posudek vedoucího práce [.pdf] 58,31 kB

Reviewer’s report
prof. Ing. Karel Hájek, CSc.

viz. posudek v pdf.
File inserted by the reviewer Size
Posudek oponenta [.pdf] 199,45 kB

Reviewer’s report
Ing. Bernard Kopec, CSc.

viz. posudek v pdf.
File inserted by the reviewer Size
Posudek oponenta [.pdf] 127,19 kB