Interface Load Transfer Degradation During Cyclic Loading: A Microscale Investigation

Cementitious bond degradation during cyclic shear loading, studied by contact electrical resistance measurement

Degradation of the cementitious bond between steel rebar and concrete and that between old and new mortar under cyclic shear loading was observed nondestructively by measuring the contact electrical resistance of the joint. Degradation, which caused a decrease in bond strength but no visual damage, was indicated by an abrupt increase in the resistance at a small fraction of the fatigue life. Bo...

Numerical investigation of strain distribution during cyclic expansion extrusion (CEE)

Strain distribution of Al 1100 was numerically investigated during cyclic expansion extrusion (CEE) process using finite element method (FEM). Die angle, corner fillet radius and die chamber diameter were considered as die parameters and friction factor and number of passes as process parameters. The effects of these parameters were investigated on the effective strain and strain homogeneity in...

Comparative Evaluation of Microleakage at the Interface of Titanium and Zirconium Abutments Following Oblique Cyclic Loading: An in vitro Study

Abstract Background and aim: Oral microbiota could proliferate the microspace between the implant and abutment, thereby cause inflammation in the peri-implant tissues and adjacent bone. This study aimed to investigate the effect of two types of abutments (zirconia and titanium) on microleakage at implant-abutment interface area under oblique cyclic loading in vitro. Materials and methods:In thi...

Comparative Evaluation of Microgap at the Interface of Titanium and Zirconium Abutments Following Oblique Cyclic Loading: An in vitro Study

Abstract   Background and Aim : Microgap in the implant-abutment interface is one of the main challenges in the treatment of two-piece implants. This study aimed to investigate the effect of two types of abutments (zirconia and titanium) on microgap at implant-abutment interface area under oblique cyclic loading in vitro. Methods and Materials In this in vitro study, 12 implant-abutment assemb...

Investigation of fatigue behavior of polyester filament woven fabrics under cyclic loading