Materials problem: Additive

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Literature Review: Additive problem for Materials

This “Ten Problems for Materials in the 2020s” booklet identifies ten relevant areas from very recent contributions put forward at academic level in the form journal articles, conference proceedings and students theses. Ten freely accessible internet references have been selected for each area and direct links are provided at the end of each chapter for own consultation. Our selected references do not intend to mirror ranking indexes nor establish novel classifications. On the contrary, they are meant to represent peer-reviewed, diverse and scientifically-sound case studies for vertical dissemination aimed at non-specialist readers. They will also be able to scoop even more references through the bibliography that is reported at the end of each selected reference.

Without further ado, these are the ten problems that we are going to introduce in this booklet:

  1. research, 
  2. composites,
  3. metals,
  4. plastics,
  5. glass-ceramics,
  6. biomaterials,
  7. additive,
  8. nanomaterials,
  9. self-healing,
  10. informatics.

Each problem has its own dedicated chapter made of an introductory section, a short presentation of the ten selected references and a conclusions section.

The final chapter of this booklet will report the conclusions from each chapter again in order to provide a complete executive summary.

7 Additive

THE PROBLEM — Optimal selection of additive manufacturing materials has not been thoroughly researched. Complex metallic parts can be produced with a short lead time, albeit in relatively low numbers. Polymeric composite materials for powder-based additive manufacturing have also been attracting intensive research interests. The mechanical properties of 3D printed parts are often worse than conventional counterparts and need further treatment.

CASE STUDIES — … buy this booklet from Amazon …

CONCLUSIONS — Additive manufacturing material selection is a multi-criteria decision-making problem that can be solved through a proper implementation of analytical hierarchy process methodology. Steels are subjected during additive manufacturing processing to time-temperature profiles which are very different from the ones encountered in conventional process routes, and hence the resulting microstructures differ strongly as well. There are significant gaps between existing additive manufacturing specification standards and the industrial needs for widespread use of additive manufacturing technology. Defects resulting from the manufacture of materials by additive manufacturing are successfully eliminated by friction treatment. On the other hand, sintering it is a process that can assure a very good surface finish and an outstanding dimensional accuracy. There is not a unique additive manufacturing technology that suits every metal aerospace application. For electrochemical energy storage devices such as batteries and supercapacitors, 3D printing methods allows alternative form factors. In the nuclear industry, a critical first step is successful demonstration of additive manufacturing to achieve representative density and microstructures for reference fuel materials, such as UO2. At present, non trivial challenges in understanding the process-structure-property-performance relationships stand in the way of achieving the full potential of additive manufacturing.

TEN FREE REFERENCES FROM THE INTERNET — … buy this booklet from Amazon …

“Ten Problems for Materials in the 2020s” booklet for Amazon Kindle, 2020; click on the cover to go to the dedicated Amazon listing page

By TenProblems

Literature Reviews for Inquisitive Minds