6,340 research outputs found
Survey on Additive Manufacturing, Cloud 3D Printing and Services
Cloud Manufacturing (CM) is the concept of using manufacturing resources in a
service oriented way over the Internet. Recent developments in Additive
Manufacturing (AM) are making it possible to utilise resources ad-hoc as
replacement for traditional manufacturing resources in case of spontaneous
problems in the established manufacturing processes. In order to be of use in
these scenarios the AM resources must adhere to a strict principle of
transparency and service composition in adherence to the Cloud Computing (CC)
paradigm. With this review we provide an overview over CM, AM and relevant
domains as well as present the historical development of scientific research in
these fields, starting from 2002. Part of this work is also a meta-review on
the domain to further detail its development and structure
Continuous maintenance and the future – Foundations and technological challenges
High value and long life products require continuous maintenance throughout their life cycle to achieve required performance with optimum through-life cost. This paper presents foundations and technologies required to offer the maintenance service. Component and system level degradation science, assessment and modelling along with life cycle ‘big data’ analytics are the two most important knowledge and skill base required for the continuous maintenance. Advanced computing and visualisation technologies will improve efficiency of the maintenance and reduce through-life cost of the product. Future of continuous maintenance within the Industry 4.0 context also identifies the role of IoT, standards and cyber security
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A Real-Time Communication Architecture for Metal Powder Bed Fusion Additive Manufacturing
Recent advancements in the field of additive manufacturing continue to push its application deeper
into commercial use. However, concerns persist regarding the consistency of part quality,
methodologies for quality assurance, and cyber-physical system security. These concerns are
exacerbated by the closed-system architecture implemented by most commercial powder bed
fusion additive manufacturing (PBFAM) machine manufacturers. Though implementation of
device and process monitoring equipment is often suggested to address these concerns, deployment
is hampered by the inability to extract real-time information from closed systems during the build
process, including scanner position, laser power, sensor data, etc. Here, a framework for an open
and transparent communication protocol for PBFAM systems is developed and implemented on a
3DSystems ProX-200 machine. Real-time measurement of build process parameters and
synchronization with an optical emission sensor is demonstrated. The utility of the protocol and
real-time sensing for PBFAM are discussed.Mechanical Engineerin
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