Efficiency of two non-destructive testing methods to detect defects in polymeric materials

• Autorzy: Wierzbicki Ł , Stabik J. , Wróbel G. , Szczepanik M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of this paper was to compare application possibilities of non-destructive ultrasonic and thermographic testing methods to detect defects in polymeric materials. In experimental part, subsurface defects were made in specimens of polymeric materials such as PE, PMMA, laminate then experimentally detected and directly displayed in ultrasonic and thermographic images. Design/methodology/approach: In this paper the development of a real-time non-invasive technique using pulsed infrared (IR) thermography to measure the temperature of polymer materials is described. In this study 16 specimens were pre-heated during specific time using infrared lamp. After that the specimen’s surface temperature was scanned during cooling down process by a thermovision camera, then defects were detected by means of a thermographic images analysis. The second method applied was ultrasonic testing using the pulse-echo technique as a type of non-destructive testing commonly used to find flaws in materials and to measure the objects thickness. Frequencies of 2 to 10 MHz are common but for special purposes other frequencies are used. Findings: The experimental results have demonstrated that application of ultrasonic and thermographic testing are effective methods to visualize and reveal defects in the polymeric materials. Research limitations/implications: It is not possible to detect defects after a long pre-heating time of researched material because it results in uniform temperature on the whole surface of specimen. The most problems about identification of defects in tested materials by ultrasounds concern laminates. Originality/value: This paper is a unique because it compares two non-destructive testing methods usually used separately to detect defects in polymeric materials.

Słowa kluczowe

EN

non-destructive testing; thermography; ultrasounds; polymeric material

PL

badania nieniszczące; termografia; ultradźwięki; materiał polimerowy

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2010
• Tom: Vol. 38, nr 2
• Strony: 163--170
• Opis fizyczny: Bibliogr. 31 poz., rys., tabl.

Twórcy

autor

Wierzbicki Ł

autor

Stabik J.

autor

Wróbel G.

autor

Szczepanik M.

• Division of Metal and Polymer Materials Processing, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland,

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