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

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

Shaking Heritage

Any moment the earth can shake, but we do not know when or where. If it happens, our Heritage might be in danger. Shaking Heritage addresses the topic of the seismic vulnerability of museum collections. It develops a way to assess the seismic risks for movable Heritage, proposing a synthetic method to rate the vulnerable settings. It discusses the necessity of integrating museography and anti-seismic solutions for museums and exhibitions, and studies exhibit solutions that would improve the seismic safety of collections and setups. It stresses the necessity of constructing shared guidelines and policies for the safety of the movable Heritage. Shaking Heritage is a step forward in acknowledging the importance of the anti-seismic culture among museum institutions and researchers

DeWitt Wallace Library Annual Report 2015-2016

Summary of library and media services activities for 2015-201