Fatigue Behavior of Polyamide 66/Glass Fiber Under Various Kinds of Applied Load
Article dans une revue avec comité de lecture
Abstract
In this study, the fatigue behavior of polyamide 66 reinforced with short glass fibers and especially the role of glass fibers has been investigated under two kinds of cyclic loading. tension–tension fatigue tests with stress controlled and alternative flexural fatigue test with strain controlled were carried out. The main topics include microscope damage observation, described by fiber/matrix debonding and interfacial failure, endurance limit with Wohler curves, effect of self-heating temperature. For both tests, the surface temperature increases with an increasing applied load. The results show that the self-heating has an important effect in the failure point where the Wohler curves join each other. The fracture surface was analyzed by scanning electron microscope for both applied loads. The stress ratio is −1 for alternative flexural fatigue test and 0.1 and 0.3 for tension–tension fatigue test ones at frequencies ranging 2–60 Hz.
Files in this item
Related items
Showing items related by title, author, creator and subject.
-
Article dans une revue avec comité de lectureFatigue damage initiation of a PA66/glass fiber composite material is studied with interrupted tests carried out with an “alternative bending device” and a small applied strain. During the damage initiation period, no ...
-
Article dans une revue avec comité de lectureMOUNIF, Eskandar; BELLENGER, Véronique; MAZABRAUD, Philippe; NONY, Fabien; TCHARKHTCHI, Abbas (Wiley, 2010)The identification of kinetic parameters controlling the crosslinking of Diglycidyl ether of bisphenol/isophorone diamine reactive system was achieved via optimization program (Inverse method) based on Fourier transform ...
-
Article dans une revue avec comité de lectureMOUNIF, Eskandar; LIANG, Genhai G; COOK, Wayne D; BELLENGER, Veronique; TCHARKHTCHI, Abbas (Wiley, 2009)The rotational moulding of thermosetting resins is hampered by their low viscosity and the abrupt increase in their viscosity as they polymerize. This study investigates the use of poly(methylmethacrylate) (PMMA) as a ...
-
Article dans une revue avec comité de lectureFERREIRA, Paulo; AUDOUIN, Ludmila; VERDU, Jacques; MONCHY-LEROY, Carole; COLIN, Xavier; RICHAUD, Emmanuel (Elsevier, 2010)Thin (60 μm) and thick (250 μm) samples of poly(ether ether ketone) were subjected to radiochemical ageing at 24 kGy h -1 dose rate for doses up to 30.7 MGy at 60 °C in air. FTIR spectrophotometry (hydroxyl and carbonyl ...
-
Article dans une revue avec comité de lectureThis paper characterizes and analyzes the microstructures of injection-molded polypropylene parts reinforced with 20 wt% of hemp fibers in order to understand the process induced variations in thermomechanical properties. ...