Prediction of Fiber/Matrix Debonding Kinetics in Glass Fibre Reinforced Polyoximethylene under Creep

Georgi Zachariev; Hans-Volker Rudolph; Heinz Ivers; Lothar Buchta

doi:10.3139/120.110193

Article

Prediction of Fiber/Matrix Debonding Kinetics in Glass Fibre Reinforced Polyoximethylene under Creep

Georgi Zachariev , Hans-Volker Rudolph , Heinz Ivers and Lothar Buchta

Published/Copyright: May 26, 2013

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From the journal Materials Testing Volume 53 Issue 1-2

Abstract

A method for independent prediction of creep damage accumulation on the basis of damage at short term loading and long-term strength is verified for the case of fiber/matrix debonding of injection moulded short glass fibre reinforced polyoximethylene. Small angle scattering X-ray refractometry is applied for damage registration. The method is applicable to materials which display delocalised damage prior to fracture. The predicted damage is compared with the experimental data for damage accumulation in creep.

Kurzfassung

Am Beispiel der zunehmenden Faser/Matrix-Enthaftung von glasfaserverstärktem Polyoxymethylen unter Kriechbelastung wird eine Vorhersagemethode für die Schadensakkumulation auf der Basis des Kurzzeitschadens und der Langzeitfestigkeit verifiziert. Für die Detektion der Schädigung wird das Kleinwinkel-Streuverfahren der Röntgen-Refraktometrie eingesetzt. Die Vorhersagemethode ist geeignet für Materialien mit delokalisierter Schädigung vor dem Versagensfall. Die Schadensvorhersage wird mit der experimentell bestimmten Schadensakkumuklation verglichen.

Prof. Dr.-Ing. habil. Georgi Zachariev, born 1939, has studied civil engineering at the Technical University of Sofia, and has focused on material science and mechanics. Since 1963 he is collaborator, and since 1995 director of the Central Laboratory of Physico-Chemical Mechanics at the Bulgarian Academy of Science in Sofia. He has received his Dr.-Ing. in 1968, his DSc. and habilitations in 1975 and 1996. Furthermore he holds a fellowship of the Alexander von Humboldt-Foundation.

Dr.-Ing. Hans-Volker Rudolph, born 1942, studied mechanical engineering at the Technical University of Berlin, where he got his PhD as well. Since 1978 he then was collaborator of the BAM Federal Institute for Materials Research and Testing at the department „Function of Polymers“. He was head of the project „Long Term Behaviour of Polymers“ until his retirement in 2007.

Heinz Ivers, born 1940, became an engineer in 1971 at the BAM Federal Institute for Materials Research and Testing. At the department „Function of Polymers“ he was in charge of the X-ray refraction techniques of the project „Long Term Behaviour of Polymers“ until his recent retirement.

Lothar Buchta, born 1963, is in charge of the X-ray refraction techniques at the department of “Materials Engineering” — BAM.

References

1 G.Zachariev, H.-V.Rudolph, H.Ivers: Prediction of creep-damage accumulation in glass fibre reinforced polyoximethylene, Materials Science and Engineering A510-511 (2009) pp. 425–428.10.1016/j.msea.2008.04.114Search in Google Scholar

2 Hentschel, M.P.; Harbich, K.W.; Lange, A.: Nondestructive evaluation of single fibre debonding by X-ray refraction, NDT & E international27 (1994) 5, pp. 275–28010.1016/0963-8695(94)90133-3Search in Google Scholar

3 G.Zachariev, H.-V.Rudolph, H.Ivers: Damage accumulation in glass fibre reinforced polyoximethylene under short-term loading, Composites Part A.35, (2004), pp. 1119–1123.10.1016/j.compositesa.2004.03.018Search in Google Scholar

Published Online: 2013-05-26

Published in Print: 2011-02-01

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https://doi.org/10.3139/120.110193