In order to reduce the protrusion height and increase strength of clinched joint, a two-step clinching method was investigated in present study. The whole process contains two steps. first step is used produce one-step joints, second press joints joining strength. influences steps sheet thicknesses on mechanical properties joint were investigated. main failure mode all tests neck fracture mode....

In this study, constraint groove pressing (CGP) process and ultrasonic assisted CGP (UCGP) process were investigated on the process forces, mechanical properties of the sheet, including hardness and tensile tests and grain size. Pure copper sheets were used as samples in this research. Samples were tested both with and without ultrasonic vibrations for mechanical properties and grain size up to...

BACKGROUND/AIMS To devise and evaluate a novel Ocular Anaesthetic Scoring System (OASS) for non-topical local anaesthesia. METHODS In OASS, a score of between 0 (poor) and 14 (excellent) was devised measuring motor (ocular motility, levator and orbicularis function) and sensory functions (digital spear pressure at limbus and topical anaesthetic sting). 40 patients were studied prospectively t...

     Salt crystallization is one of the most powerful weathering agents that may cause a rapid change in the mechanical properties of stones, and thus limit their durability. Consequently, determining the mechanical properties of stones due to salt crystallization is important for natural building stones used in marine environmental and mild climatic conditions, which expose excessive salt crys...

For the purpose of exploring deformation characteristics of jointed rock masses, influence of joint inclination and confining pressure on the mechanical behavior of discontinuous rock a series of compression tests were conducted under satisfactory testing conditions on three types of sandstone from various locations. Three groups of jointed specimens were used in this research, including specim...

The three-dimensional corner joint is a type of in wooden furniture structures with complex parameter relationships and many constraints. Traditional structure design requires repeated modifications geometric models to determine dimensions, which inefficient challenging severely impacts the development digital manufacture process. Based on ideal value range mortise–tenon joints, this study deri...

Purpose: Most studies have examined the effect of stretching and strength exercises on the glenohumeral joint (shoulder joint), on the other hand, due to the importance of the relationship between core stability and pectoral girdle, especially in archery athletes, the aim of this study was to investigate the effect of six weeks of core stability exercises on the glenohumeral joint internal rota...