Fatigue-reinforced plastic

The general fatigue behaviour which is observed in glass fibre reinforced plastics is illustrated in Fig. 3.32. In most grp materials, debonding occurs... 

In this book no prior knowledge of plastics is assumed. Chapter 1 provides a brief introduction to the structure of plastics and it provides an insight to the way in which their unique structure affects their performance. There is a resume of the main types of plastics which are available. Chapter 2 deals with the mechanical properties of unreinforced and reinforced plastics under the general heading of deformation. The time dependent behaviour of the materials is introduced and simple design procedures are illustrated. Chapter 3 continues the discussion on properties but concentrates on fracture as caused by creep, fatigue and impact. The concepts of fracture mechanics are also introduced for reinforced and unreinforced plastics. 

During the last half-century, aeronautics technology has soared, with plastics playing a major role. Lightweight durable plastics and reinforced plastics (RPs) save on fuel while standing up to forms of stress like creep and fatigue, in different environments. 

Reinforced plastic In common with metals and unreinforced plastics, RPs also is susceptible to fatigue. However, they provide high performance when compared to un-... 

Fatigue of Glass-Fiber Reinforced Plastics (GRP). NOL rings of 6-inch outer diameter and 0.25-inch width were fabricated from 12 single... 

ISO DIS 13.003. Fibre reinforced plastics Determination of fatigue properties under tvciic loading. 

Like unreinforced plastics, reinforced plastics are also susceptible to fatigue. There is, however, no general rule concerning whether glass reinforcement enhances the fatigue endurance of the base material. In some cases the unreinforced plastic exhibits greater fatigue endurance than the reinforced material in other cases, the converse is true. 

Plastics reinforced with carbon and boron, which have higher tensile moduli than glass, are stifier than glass-reinforced plastics and are found to be less vulnerable to fatigue. 

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