Fracture toughness of synthesized high-performance epoxies subject to accelerated water aging

Video reproducing the internal stresses induced by swelling during the Hydrothermal Aging of a DGEBA+DDS and a DGEBF+DDS epoxy systems. The video shows photoelastic isochromatic fringes acquired in red light from a circular dark field polariscope. Samples shown are bulk beams and Single Edge Notched Bending beams (compliant with ASTM D 5045). The video is linked in the paper Journal "Fracture toughness of synthesised high-performance epoxies subject to accelerated water aging" by Giuseppe Pitarresi, Sabina Alessi and Andrea Toscano.本视频再现了DGEBA+DDS与DGEBF+DDS环氧树脂体系在水热老化（Hydrothermal Aging）过程中因溶胀诱导产生的内部应力。本视频展示了通过环形暗场偏振仪采用红光采集得到的光弹性等色条纹（photoelastic isochromatic fringes）。测试样品包含块状梁试样与符合ASTM D 5045标准的单边缺口弯曲（Single Edge Notched Bending）试样。本视频的相关内容刊载于Giuseppe Pitarresi、Sabina Alessi与Andrea Toscano合著的期刊论文《经受加速水老化的合成高性能环氧树脂的断裂韧性》（Fracture toughness of synthesised high-performance epoxies subject to accelerated water aging）中。