Measurement of residual stresses in Ti-15-3 SCS-9 continuously reinforced composites using X-ray diffraction and a matrix etching technique

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Abstract

Residual stresses in Ti-15-3/SCS-9 composites have been measured in material with controlled matrix and interfacial microstructures. The FEMUR test was used to measure axial residual strains in the reinforcing fibers. Longitudinal and circumferential matrix residual strains were measured using X-ray techniques. Residual stresses were calculated from the residual strain measurements. The residual stress levels obtained in the specimens heat treated at 540 °C were generally much lower than those in the specimens annealed at 815 °C, although some anomalies were observed in the specimens annealed at 540 °C for 10 hours. The trends in the residual stresses calculated from the results of the FEMUR and X-ray measurements were consistent with the requirements for static equilibrium. © 1995.

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Kendig, K. L., Soboyejo, W. O., & Miracle, D. B. (1995). Measurement of residual stresses in Ti-15-3 SCS-9 continuously reinforced composites using X-ray diffraction and a matrix etching technique. Scripta Metallurgica et Materiala, 32(5), 669–674. https://doi.org/10.1016/0956-716X(95)91583-B

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