Stress on particles in an aluminium particulate epoxy composite under load was investigated by X-ray diffraction. The microdeformation of the aluminium crystal could be detected as a shift in the X-ray diffraction peak induced by the applied stress. When a tensile stress was applied to the particulate composite, incorporated particles were found to be subjected to a stress several times larger than the applied stress. This was considered to result in a mechanical reinforcement of the composite. The states for stress concentration onto particles depend on the volume fraction and particle size. An increase in the macroscopic Young's modulus with the incorporation of filler could be explained quantitatively by using the stress concentration factor
Посилання на статтю:
Studies on mechanical properties of polymer composites by X-ray diffraction: 3. Mechanism of stress transmission in particulate epoxy composite by X-ray diffraction / Katsuhiko Nakamae, Takashi Nishino and Xu Airu // Polymer. – 1992. – Vol 33. – P. 2720-2724.