The electric fire-exchanging operation is basically used to implement such as Wire stripping, drainage wire through the fastening clip, clamp bolt fastening, etc. Manual time-consuming and laborious has very high safety risks, so automatic electrified ignition robot emerges Times require; method should accurately identify position of line, guide move carry out corresponding operation. Based on ...

Hand-held power tools used for fastening operations exert high dynamic forces on the operator's hand-arm, potentially causing injuries to the operator in the long run. This paper presents a study that analyzed the vibrations exerted by two hand-held power tools used for fastening operations with the operating exhibiting different postures. The two pneumatic tools, a right-angled nut-runner and ...

INTRODUCTION Formation of adhesions after laparoscopic hernia repair using the intra-peritoneal onlay mesh (IPOM) procedure can lead to intestinal obstruction or mesh erosion into intestinal lumen. The aims of this study included: measurement of adhesion formation with Dynamesh IPOM after laparoscopic intraperitoneal implantation, and assessment of the occurrence of isolated adhesions at the fa...

Engineering adhesive joints are being increasingly used in industry because of the advantages they offer over other joining methods such as fastening or welding. The development and the use of adhesives in a design environment require accurate mechanical tests in order to measure their strength and toughness. Standard techniques such as the shear lap test are commonly used to measure shear stre...

BACKGROUND Fractures of the distal femoral epiphysis and metaphysis are complex musculoskeletal injuries posing a significant clinical problem. The incidence of compound femoral fractures has been growing owing to the rapid development of the motor industry. The fractures are most commonly the result of high-energy traumas during road accidents or falls from a height. MATERIAL AND METHODS A t...

Adhesive bonding offers many advantages over mechanical fastening, but requires robust materials and processing methodologies before it can be incorporated in primary structures for aerospace applications. Surface preparation is widely recognized as one of the key steps to producing robust and predictable bonds. This report documents an ongoing investigation of a surface preparation technique b...

Mechanical fastening or riveting of metallic doublers is traditionally used for repairing cracked structures, multi-site or wide-spread darnage and any other common flaws detected during inspection of aging aircraft. This method of repair can severely reduce the initiation fatigue lifetime and the darnage tolerance of the structure [ 1]. Several researchers for example [2-6] have demonstrated t...

The aim of this study is to model the hand–arm system during fastening operation using shear fasteners. Fastening using powered hand-tool generates considerable dynamic forces caused by the impact delivered to the hand–arm at the end of the operation because of fastener shear-off. The hand–arm is modeled as a rotational single-degree-of-freedom system. The values of the model parameters are obt...