The morphology of the joint surface is multi-scale, and it can be divided into first-order asperity (waviness) second-order (unevenness). At present, roughness characterization formula considers only contribution waviness unevenness components does not fully consider their mechanical contribution. same time, relationship between still unclear. Thus, considering needs to further studied. In this...

This investigation on the dynamic behaviour of ball bearings was motivated by the demand for silent bearings in noise-sensitive applications, especially in the household appliance and automotive industry. The present investigations are intended to provide a clear understanding of the role of the bearing in the application with respect to its design, its quality and the way in which it is mounte...

Adv. Mater. 2010, 22, 2041–2044 2010 WILEY-VCH Verlag G T IO N Emerging biomaterials based upon analogues of native extracellular matrix proteins provide an opportunity to create protein scaffolds that mimic tissue mechanical behavior and guide cellular responses. However, in order to reproduce macroscale tissue properties, protein analogues must be endowed with appropriate microstructural feat...

The structure of a surface grinder comprises of a base, all the other machine members like column, the reciprocating table, the grinding wheel, spindle and spindle motor are all supported on the base. In the design of one such surface grinder waviness was observed on the ground surface. It has become necessary to investigate into the behavior of the machine under working conditions. Investigati...

PURPOSE Previous in vitro studies with transgenic and gene-knockout mice have shown that lenses with elevated levels of glutathione peroxidase (GPX)-1 activity are able to resist the cytotoxic effect of H(2)O(2), compared with normal lenses and lenses from GPX-1-deficient animals. The purpose of this study was to investigate the functional role of this enzyme in antioxidant mechanisms of lens i...

The presence of waviness defects in CFRP materials due to fiber undulation affects the structural performance composite structures. Hence, without a reliable assessment resulting material properties, full weight-saving potential cannot be exploited. Within paper, probabilistic numerical approach for improved estimation properties based on spatially distributed is presented. It makes use homogen...

Automated Tape Placement (ATP) is one of the attractive automated composite manufacturing processes as it reduces labor cost, increases production rate and improves repeatability. In this method, part built by consolidating unidirectional prepreg tape layer at a time with placement head using compaction roller. Defects such gaps between neighboring tapes during lay up are inevitable. This chall...

Fiber-reinforced polymer composites have excellent mechanical properties and outstanding development potential are cost-effective. They increasingly been used in numerous advanced engineering applications as materials for wind turbine blades, helicopter rotors, high-pressure pipelines, medical equipment. Understanding assessing structural failure promptly the whole lifecycle of a composite is e...

Abstract This work presents a model of parametrized fiber-reinforced tapes layup for simulations stamp forming. BETA CAE Systems’ ANSA v22.1.0 produced the forming model. The initial configurations process are simulated using LS-DYNA R12 from Livermore Software Technology Corporation (LSTC) on High-Performance Computing Center Stuttgart (HLRS). A doubledome geometry was used as use case in pres...