Resonance fatigue testing of test beams made of composite material (original) (raw)

2010

Abstract

Increasing oil prices have intensified the trend to use composite materials in so-call primary components of cars and in aerospace applications. As a consequence, the fatigus behaviour of composites has became an important issue. This paper describeds accelerated fatigue tests on composite material beam specimens clamped in their middle part and fixed on an electromechanic shaker. Many loading cycles can be imposed on a specimen in a controlled way by inducing resonance vibrations. The bending mode shape that is associated to the fundamental resonance frequency causes a stress state in the specimen that is maximal at the clamping pont in the middle and zero at both free ends. The stress state and hence the fatigue behavior varies from point to point. By interrupting the fatigue test at well-chosen moments in time and measuring the amplitude distribution of the vibration mode, it is possible to calculate the evolutio of the beam stiffness as a function of the number of applied loadin...

Hugo Sol hasn't uploaded this paper.

Let Hugo know you want this paper to be uploaded.

Ask for this paper to be uploaded.