[PDF] Top 20 Fatigue crack growth in thin notched woven glass composites under tensile loading. Part I: experimental

... encountered in measuring the crack length because of the stepwise nature of the crack growth and the extensive damage region associated with the crack ...mode I fatigue ... Voir le document complet

... encountered in measuring the crack length because of the stepwise nature of the crack growth and the extensive damage region associated with the crack ...mode I fatigue ... Voir le document complet

... the fatigue of the through-the-thickness crack propagation in thin notched compos- ite laminates made of two glass woven ...different crack growths between warp and ... Voir le document complet

... of woven glass plies changes with the increase in cycles [4,6,12,13] ...The fatigue process of the composite is usually found to have three stages: (1) rapid modulus decay with cycles (2) ... Voir le document complet

... is in good agreement with the experimental one ( ...the loading path. Just one 2D-mesh is printed on the figure in order to make the comparison ...occur in such lami- nates. The model ... Voir le document complet

... t Fatigue propagation of a through-the-thickness crack in thin woven glass laminates is difficult to model when using homogeneous material ...assumption. Crack ... Voir le document complet

... of glass/epoxy woven oriented at ±45 ◦ ...performed in two ...the fatigue tensile tests are carried ...realized in a previous study in order to investigate the behaviour ... Voir le document complet

... a tensile loading after having been impacted with a low velocity in a drop tower ...specifically in the field of aeronau- ...impacted composites usually present matrix cracking, ... Voir le document complet

... propagation in thin hybrid carbon/epoxy and glass/epoxy woven composite laminates under fatigue tensile ...loading. In this paper, the semi-continuous ... Voir le document complet

... However, it has been demonstrated that the stress-strain softening introduced to account for the fiber failure variables leads to ill-defined problems which compromise the simulations [8]. Moreover, those models don’t ... Voir le document complet

... conditions in particular temperature. In the case of mechanical testing, thermomechanical coupling induce heat sources to be activated during the deformation and damage processes so that the temperature of ... Voir le document complet

... Secondary cracks initiate at the tips of the flaws and propagate in the coplanar direction of the flaw or horizontal (quasi-coplanar) direction. Six types of coalesc[r] ... Voir le document complet

... testing In order to demonstrate the capabilities of the proposed approach, a series of virtual tests are performed using material parameters that provide realistic tendencies with respect to experimental ... Voir le document complet

... the woven fabric behaves like a discrete truss ...region in order to represent local strain ...impact loading, for thin composite structures made of two or three ... Voir le document complet

... point of intersection and intra-tows crackings initiate. These two types of matrix damaging propagate at ±45 ◦ but the intra-tows crackings propaga- tion is much slower. Finally, the splittings reach the edges of the ... Voir le document complet

... ultrasonic fatigue testing machine is composed of the following ...signal in a mechanical vibration at 20 ...amplitude in order to obtain the required strain amplitude in the middle section of ... Voir le document complet

... capabilities under uniaxial stress controlled multi-block fatigue ...presented in Figure ...decreasing in early fatigue ...during fatigue until it reaches a critic value, here ... Voir le document complet

... initiation. In our tested conditions, very intense slip markings are clearly evidenced in the surface after only 1,000 ther- mal cycles [10] , whereas the first 50-lm long crack is detected after ... Voir le document complet

... time. In general, the load/time curve could be decomposed in three stages based on cumulative AE ...hits. In the linear deformation part, some emissions have been ...observed. In their ... Voir le document complet

... a thin wall has several modes of vibration, with nodes and antinodes which can be met by the ...the part according to the tool localization was underlined by [4]. In the same way [5] showed that the ... Voir le document complet