In the present work, a specific three-point bending test is applied to evaluate how roughness can impact bond strength (adherence) and mechanism of interfacial failure initiation. The study conducted using an aluminum alloy 2024-T3 as substrate DGEBA (polyepoxide bisphenol A diglycidyl ether) /DETA (diethylenetriamine) adhesive, considering different abrasive surface treatments. An optimal reac...

The combined finite–discrete element method (FDEM) based on the cohesive zone model (the CZM) achieves cracking simulation by inserting elements between solid elements. In this study, three-point bending fracture tests of frozen soil were simulated using FDEM CZM. Firstly, sensitivity parameters was analyzed. Secondly, through a series simulations test soil, it found that with reasonable values...

Many load bearing biological structures (LBBSs)-such as feather rachises and spicules-are small (<1 mm) but not microscopic. Measuring the flexural behavior of these LBBSs is important for understanding the origins of their remarkable mechanical functions. We describe a protocol for performing three-point bending tests using a custom-built mechanical testing device that can measure forces rangi...

A flexural model of four-point bending fatigue that has been experimentally validated for human cortical bone under load control was used to determine how load and displacement control testing affects the fatigue behavior of human cortical bone in three-point and symmetric four-point bending. Under load control, it was predicted that three-point bending produced no significant differences in fa...

Phase-field fracture simulations have been established to simulate crack propagation in solid structures. The method employs a variational framework which has proven converge Griffith' classical model for brittle fracture. Here we investigate the predictiveness of phase-field through four-point bending test mixed mode condition, and discuss possibilities perform such simulation with finite elem...

Abstract—Geometrical shape of bamboo usually assumed as tapered hollow pipe. This study proved that the dimensional changes along the bamboo stem significantly affected to its Modulus of Rupture (SR) value which measured from third point loading bending test. Therefore if the bending test applied using third point loading configuration, the SR value should be adjusted by strength ratio of taper...