A comparison study of the pulse-echo and through-transmission ultrasonics in glass/epoxy composites

• Autorzy: Wróbel, G. , Pawlak, S.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of the present study was to assess the limits and compare abilities of the pulse-echo and through-transmission ultrasonics to evaluate a chosen property of composite materials. Design/methodology/approach: Two different ultrasonic non-destructive techniques were employed to measure the mechanical wave velocity in glass/epoxy composites. The study was performed on various specimens with different glass content at the range from 30 to 65%. The exact glass content in examined materials was determined using the standard destructive analysis. Findings: A comparison showed that the results obtained for the wave velocity from pulse-echo and through-transmission are in good agreement, indicating that both techniques can be considered as a quantitative non-destructives tools of local fiber content evaluation. The results are presented in the form of linear relationships of wave velocity versus fiber content in the composite materials. Research limitations/implications: In order to obtain lower dispersion of data, there are many factors to be considered such as void content in composite materials and/or transducer frequency of ultrasonic device, which were out of the scope of the present study. Practical implications: The considered ultrasonic techniques can be applied to the industrial quality control of composite products, but for any different composite structures, distinct relationships should be determined. Originality/value: The results presented would be of interest to the industrial quality procedures, especially in the case of products with high failure-free requirements.

Słowa kluczowe

PL

badania nieniszczące; ultradźwiękowa impulsowa metoda echa; badanie ultradźwiękowe; kompozyty szkło-epoksydowe

EN

non-destructive testing; pulse-echo ultrasonics; through-transmission ultrasonics; glass-epoxy composites

• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 22, nr 2
• Strony: 51-54
• Opis fizyczny: Bibligr. 17 poz., rys., tab.

Twórcy

autor

Wróbel, G.

autor

Pawlak, S.

• Department for Processing of Metals and Polymers, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18 a, 44-100 Gliwice, Poland,

Bibliografia

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• [11] G. Wróbel, Ł. Wierzbicki, Ultrasonic methods in diagnostics of glass-polyester composites, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 203-206.
• [12] C. Scarponi, G. Briotti, Ultrasonic technique for the evaluation of delamination on CFRP, GFRP, KFRP composite materials, Composites: B31 (2000) 237-243.
• [13] C.H. Gur, Investigation of microstructure-ultrasonic velocity relationship in SiC - reinforced aluminium metal matrix composites, Materials Science and Engineering A361 (2003) 29-35.
• [14] G. Wróbel, Ł. Wierzbicki, S. Pawlak, Ultrasonic quality evaluation method for polyester glass laminated materials, Proceedings of the 11th International Scientific Conference on Contemporary Achievements in Mechanics, Manufacturing and Materials Science, Gliwice - Zakopane, 2005, 1040-1044.
• [15] G. Wróbel, S. Pawlak, Ultrasonic evaluation of the fiber content in glass/epoxy composites, Journal of Achievements in Materials and Manufacturing Engineering 18 (2006) 187-190.
• [16] G. Wróbel, S. Pawlak, The effect of fiber content on the ultrasonic wave velocity in glass/polyester composites, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 295-298.
• [17] Standard ISO 1172:2002, "Textile-glass-reinforced plastic, prepregs, moulding compounds and laminates - Determination of the textile-glass and mineral-filler content -Calcination methods".