A study into crack initiation and growth in peroxide-cured silica-filled polybutadiene rubber vulcanisate under a cyclic loading condition
| Autor: | Xujin Bao, Muhammad Farooq, Ali Ansarifar |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Strain energy release rate
010407 polymers Cyclic stress Materials science Strain (chemistry) Organic Chemistry 02 engineering and technology Plant Science 021001 nanoscience & nanotechnology 01 natural sciences Peroxide 0104 chemical sciences law.invention chemistry.chemical_compound Polybutadiene chemistry Optical microscope Natural rubber law Catastrophic failure visual_art visual_art.visual_art_medium Composite material 0210 nano-technology |
| Zdroj: | Journal of Rubber Research. 24:69-75 |
| ISSN: | 2524-3993 1511-1768 |
| Popis: | Crack initiation and propagation in a peroxide-cured polybutadiene rubber reinforced with silanised silica nanofiller were studied under a cyclic loading condition. The fatigue properties of the semi-transparent rubber samples were tested at a constant strain amplitude, test frequency and temperature. Initiation and subsequent growth of cracks in the rubber samples were observed using an optical microscope as a function of the number of cycles until the rubber samples failed, indicating that there are two distinct stages in the fatigue failure of the rubber vulcanisate. The cracks were initiated after the rubber was flexed for about 2817 cycles and then the cracks grew from 500 μm and reached to a critical length of 4.6 mm and followed a further 897 cycles, leading to a catastrophic failure of the rubber samples. Correlation between the rate of crack growth, dc/dn, and the strain energy release rate, T, was investigated using the power law index, and a new expression for the measurement of the cyclic fatigue life of the rubber vulcanisate was proposed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink