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If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -Selective laser melting (SLM) is a commonly known and established additive manufacturing technique and is a key technology in generating intricately shaped lattice structures. However, standard process parameters used in this technology have building time and accuracy disadvantages for structures with a low area-to-perimeter ratio, such as thin struts. Within this study, a set of process parameters tailored for lattice structures is developed and tested against standard process parameters. Design/methodology/approach -In this research work, body-centred cubic (BCC) structure specimens are manufactured using adapted process parameters. Central to the adapted process parameters is the positioning of the laser beam, the scan strategy, and the linear energy density. The specimens are analysed with X-ray micro-computed tomography (micro-CT) for dimensional accuracy. The final assessment is a comparison between specimens manufactured using adapted process parameters and those using standard process parameters. Findings -Standard parameters for lattice structures lead to a significant shift from the nominal geometry. An extensive manufacturing and computation time due to several exposure patterns (e.g. pre-contours, post-contours) was observed. The tailored process parameters developed had good dimensional accuracy, reproducible results, as well as improved manufacturing performance.Research limitations/implications -The results are based on a distinctive geometry of the lattice structure and a specific material. Future research should be extended to other geometries and materials. Practical implications -Optimisation of process parameters for the part geometry is a critical factor in improving dimensional accuracy and performance of SLM processes. Originality/value -This study demonstrates how application-tailored process parameters can lead to superior performance and improved dimensional accuracy. The results can be transferred to other lattice structure designs and materials.

One strategy to deal with unwanted vibrations of lightweight structures is to actively control systems using integrated actuators, such as piezoceramic multilayer actuators. In the presented research work, selective laser melting is used to manufacture active struts by integrating multilayer actuator into a metallic, monolithic housing. Besides the fulfilment of manufacturing constraints (e.g. low volume and individualization), a major objective of this study is to demonstrate the potential of selective laser melting for application tailored smart components. A truss structure is used as demonstration platform. Based on experimentally validated numerical models of the truss structure, a beneficial position of the active strut and the mode to be damped are determined. A model of the multilayer actuator and corresponding housing allows the dimensioning of the housing stiffness to maximize the electromechanical coupling. Thus, an efficient resistive resonant shunted system can be achieved. Numerically designed active struts with specific stiffnesses are manufactured and experimentally characterized. Measurements with connected RL-shunts using the active struts are performed and compared to the original system. Results indicate an efficient damping of the desired mode by means of application tailored active struts. The presented procedure allows rapid design of versatile actuator housings for an optimized electromechanical coupling

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