1987 Cilt 2 Sayı 1

Permanent URI for this collectionhttps://hdl.handle.net/11452/31882

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Browsing by BUU Author "Ülkü, Sedat"

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    The investigation of the effecfs of fatigue on the residual strength of composite materials
    (Uludağ Üniversitesi, 1987) Ülkü, Sedat; Mühendislik Fakültesi
    This paper presents the results of an investigation into the effects of fatigue on the residual strength of a 0°/90° CFRP composite. Cycling was carried out at five different stress levels over a range of 60 % to 90 % of the ultimate tensile strength of the composite. For a given stress level a relationship has been derived between the residual strength and the fatigue life of the composite. This relationship the fatigue characteristics for any given stress level without the need for time consuming and expensive testing. It has been shown that stress concentrations affect a crossplied laminate to a lesser extent than unidirectional laminates and homogeneous materials.
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    The strength of joints in fibre reinforced plastics
    (Uludağ Üniversitesi, 1987) Ülkü, Sedat; Mühendislik Fakültesi
    This work, mostly theoretical, relating to all aspects of adhesively bonded joints in composite materials is reviewed. The theoretical work is subdivided into classical and finite element methods. General principles and design guidelines are also presented.The load carrying joints in composite materials can be affected by two basic methods is mechanical fastening or adhesive bonding. This work is seen to be related mainly to theoretical results, derived either from classical analytical or finite element methods. The various approaches are compared with each other arıd, wlıere possible, willı experimental data.This work, mostly theoretical, relating to all aspects of adhesively bonded joints in composite materials is reviewed. The theoretical work is subdivided into classical and finite element methods. General principles and design guidelines are also presented.The load carrying joints in composite materials can be affected by two basic methods is mechanical fastening or adhesive bonding. This work is seen to be related mainly to theoretical results, derived either from classical analytical or finite element methods. The various approaches are compared with each other and, where possible, with experimental data.