1,056 research outputs found

    A comparison of processing techniques for producing prototype injection moulding inserts.

    Get PDF
    This project involves the investigation of processing techniques for producing low-cost moulding inserts used in the particulate injection moulding (PIM) process. Prototype moulds were made from both additive and subtractive processes as well as a combination of the two. The general motivation for this was to reduce the entry cost of users when considering PIM. PIM cavity inserts were first made by conventional machining from a polymer block using the pocket NC desktop mill. PIM cavity inserts were also made by fused filament deposition modelling using the Tiertime UP plus 3D printer. The injection moulding trials manifested in surface finish and part removal defects. The feedstock was a titanium metal blend which is brittle in comparison to commodity polymers. That in combination with the mesoscale features, small cross-sections and complex geometries were considered the main problems. For both processing methods, fixes were identified and made to test the theory. These consisted of a blended approach that saw a combination of both the additive and subtractive processes being used. The parts produced from the three processing methods are investigated and their respective merits and issues are discussed

    A transition to knowledge-intensive service activities in power industry: A theoretical framework

    Full text link
    The current smart energy transition is accompanied by major transformations in the aspects of technology, market, and organization. The intensive adoption of digital technology in energy production, the rapid spread of distributed generation, micro-grids and energy storage and accumulation solutions, and an ever-increasing integration between the energy sector and other critical infrastructure sectors have brought about fundament changes in the relationships between energy companies and the market. This creates a strong demand for versatile support services for these processes. The article makes an attempt to construct a conceptual framework for and to outline the tasks and goals of knowledge-intensive services in the new energy industry. The author provides justification for the key properties of knowledge-intensive services that include adaptability, the capability of self-tuning, a wide use of information and telecommunication technologies, a tendency to use a pro-active approach to systems and process management, and the availability of staff with outstanding qualifications. The author has developed a conceptual model of knowledge-intensive services in the energy sector that makes it possible to group the service segments by the dimensions of “energy market optimization and customer relations”, “asset lifecycle management”, “organizational flexibility of energy market agents”. Recommendations are given as to how to develop knowledge-intensive service activities in energy companies, including through the creation of corporate platforms and smart partnerships with universities and science. © 2019 WIT PressACKNOWLEDGEMENT The work was supported by Act 211 of the Government of the Russian Federation, contract № 02.A03.21.0006
    • …
    corecore