Stiffness and strength analysis of hybrid adhesive bonded–resistance spot welded sandwich samples by means of virtual FE testing

© 2018, © 2018 Taylor & Francis. Hybrid adhesive bonding is widely applied in industry nowadays. Whereas combinations of mechanical fastening and structural adhesive bonding are being used for a long time, hybrid bonds, which combine (resistance spot) welding and adhesive bonding, are a quite recent development. Although this technique of hybrid joining yields structures with excellent mechanical characteristics concerning static and dynamic stiffness and strength, it is hard to numerically predict these characteristics accurately. This originates from the fact that usually only some data is known on the stiffness and strength of the adhesive and spot welds but very few accurate and relevant information is available on the fracture toughness of both joining types. The presented research work consists of three main parts. - Main theoretical background on stiffness, strength and fracture characteristics of the considered joint types. - Mode I and II testing of hybrid adhesive bonded/spot welded specimen to retrieve force-displacement data and virtual testing based on finite element (FE) modelling. - Uncertainty quantification between experimental and virtual work. In general, the mode II tests correspond well with real test data. This cannot be concluded for the mode I tests. The flexibility of the double U–type samples (KS2) is difficult to simulate accurately, particularly from the point when first damage occurs. For both, the experimental and virtual data, the hybrid adhesive/spot welded joints showed the highest maximum force.status: publishe

The impact of cultural aspects on the design process

This paper looks at the impact of cultural aspects on the design proces

Pi-bonded N2 on Fe(111): The precursor of dissociation

N2 chemisorbed on Fe(111) is identified by photoelectron spectroscopy and high-resolution electron energy-loss spectroscopy as a π-bonded surface complex in which both nitrogen atoms interact with the metal. This species forms the immediate precursor to dissociation

Exploration of Correlations between Factors Influencing Communication in Complex Product Development

Designing complex products, such as jet engines, cars or certain types of software, necessitates the coordination of activities of many participants during the design process. Communication is seen as the vehicle by which this coordination could be achieved. Communication itself is influenced by many different factors that are connected. This study presents an exploration of correlations between these factors based on statistical analyses of empirical data. The research uses data collected via the `Communication Grid Method', (CGM) a structured maturity grid method to assess the perception of communication within and across team-interfaces. Five empirical studies in the aerospace, automotive, and IT industries where concurrent engineering is practiced are used. The results offer insights for researching and managing communication across inter-departmental interfaces. It has been shown in particular, how directly and indirectly linked factors influencing communication in product development form a network of correlations. Mutual trust and collaboration exhibit thematic centrality

Photoionization study of the CN-anion A study of the NaCN(001) surface in comparison with CO and N

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