Vibration diagnostics was carried out using the method of non-destructive testing piston-type pumps and compressors according to data displacement shaft rotation axis in plane. Graphs on acceleration movement along X, Y, Z planes, horizontal-vertical plane, as well graphs distribution density experimental data, are constructed

An error-controlled mesh refinement procedure for needle insertion simulations is presented. As an example, the procedure is applied for simulations of electrode implantation for deep brain stimulation. We take into account the brain shift phenomena occurring when a craniotomy is performed. We observe that the error in the computation of the displacement and stress fields is localised around th...

In order to meet the development needs of aerospace servo technology, angular displacement sensor, which compact structure, high reliability, and be able adapt harsh working environments is used for measurement feedback speed motor output shaft. The design a two-redundant multi-turn absolute encoder based on single-turn precision small modulus reducer, realizes shaft at 8000 rpm. Product perfor...

In Elliptio complanatus lateral cilia, two distinct patterns of filament termination can be discerned. In one case, all nine filaments are present and all are single; in the second, at least one filament is missing but doublets are still present. These probably represent different configurations within one cilium in different stroke positions; to get from one to the other, some peripheral filam...

Slipped capital femoral epiphysis (SCFE) is a common disease of adolescent and the epiphysis is positioned more posteromedially in relation to the femoral neck shaft with varus SCFE; however, posterolateral displacement of the capital epiphysis, valgus SCFE, occurs less frequently. We report a case of valgus SCFE in a 17-year-old boy with hypopituitarism. After falling down, he experienced diff...

OBJECTIVE To determine how axial rotation around the anatomic axis of the femur, as would occur with malrotation of a femoral fracture, affects frontal and sagittal plane alignment and knee joint orientation. DESIGN Computer-generated models of the lower extremity were constructed using standardized dimensions. To simulate a malrotated fracture, these models were rotated in the shaft around t...

Cylindrical Frictional Damper (CFD) is a new revolutionary frictional based mechanical damper. Unlike the other types of frictional dampers, CFDs do not utilize bolts to produce friction between contact surfaces. These dampers consist of two main parts, the inner shaft and the external cylinder. These two parts are assembled such that one is shrink-fitted inside the other. In this investigation...

Electromagnetic riveting process (EMR) is a high-speed impact connection technology with the advantages of fast loading speed, large force and stable rivet deformation. In this work, axisymmetric sequential loose electromagnetic-structural coupling simulation models were conducted to perform electromagnetic Ti-6Al-4V titanium rivet, parameter analysis setup was performed based on coupled result...