Fatigue strengthening of cracked steel plates with CFRP laminates in the case of old steel material
| Autor: | Laurent Gaillet, Lamine Dieng, Emilie Lepretre, Sylvain Chataigner |
|---|---|
| Přispěvatelé: | Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement - Direction Infrastructures de Transport et Matériaux (Cerema Direction Infrastructures de Transport et Matériaux), Centre d'Etudes et d'Expertise sur les Risques, l'Environnement, la Mobilité et l'Aménagement (Cerema), Structures Métalliques et à Cables (IFSTTAR/MAST/SMC), PRES Université Nantes Angers Le Mans (UNAM)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR), RP2-F15008 SNCF CIFRE LEPRETRE (20/01/2015 - 31/12/2099) |
| Rok vydání: | 2018 |
| Předmět: |
LAMINE DE POLYMERE RENFORCE DE FIBRES DE CARBONE
Materials science TOLE Modulus 020101 civil engineering ACIER 02 engineering and technology STEEL PLATE 0201 civil engineering CFRP LAMINATE [SPI]Engineering Sciences [physics] 0203 mechanical engineering FATIGUE TEST Rivet STRENGTHENING General Materials Science Composite material Civil and Structural Engineering FIBRE DE CARBONE Carbon fiber reinforced polymer RENFORCEMENT PLAQUE EN FER FORGE Fracture mechanics Building and Construction Wrought iron Gauge (firearms) WROUGHT IRON PLATE Cracking 020303 mechanical engineering & transports ESSAI DE FATIGUE POLYMERE visual_art visual_art.visual_art_medium Steel plates TOLE D&apos |
| Zdroj: | Construction and Building Materials Construction and Building Materials, Elsevier, 2018, 174, pp.421-432. ⟨10.1016/j.conbuildmat.2018.04.063⟩ |
| ISSN: | 0950-0618 |
| DOI: | 10.1016/j.conbuildmat.2018.04.063 |
| Popis: | This paper reports an experimental study performed to investigate the effectiveness of carbon fiber reinforced polymer (CFRP) laminates in extending fatigue life of old cracked metallic structures. Specimens consist of old metallic plates, mild steel and wrought iron, with one single crack emanating from a rivet hole. This cracking configuration has never been adopted in literature studies and was chosen to be representative of real cracked elements in riveted connections. Two different initial crack lengths before reinforcement, representing two degrees of fatigue damage, were adopted. Four strengthening configurations were investigated including single-sided and double-sided strengthened specimens, Normal Modulus (NM) CFRP plates with or without pre-stressing, and Ultra High Modulus (UHM) CFRP plates. «Beach marking» technique as well as crack gauge were used to monitor and record the crack propagation during fatigue loading. Experimental results show that the application of CFRP plates can effectively reduce the crack growth rate and extend the fatigue life. CFRP plates with high modulus were found to be more efficient. This study represents a contribution to the present state of research and provides some interesting results on crack propagation in CFRP repaired elements close to real riveted ones. |
| Databáze: | OpenAIRE |
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