Assignment 2 – SEM722

Assignment 2 – SEM722 ‐ Total Assessment Weighting ‐ 25%
DUE ‐ Friday 6th Sept, 11:59PM ‐ Week 8
CNC based subtractive manufacturing has been in industry standard by which many of the parts and
products have traditionally been realised. With respect to advanced manufacturing these processes
typically require an appreciation for part digitisation, CAD/CAM and the intrinsic machinability, while
materials are eroded to product the end product. By contrast additive manufacturing has emerged as
a new manufacturing paradigm, with significant potential to supersede traditional manufacturing
As with advanced subtractive manufacturing, part digitisation and CAD/CAM are critical elements in
the machine interfacing, but with many subtle differences in what can be achieved at the design to
manufacturing interface. More crucially, materials are added in a stepwise fashion, building a part
from the ground up into the end product. Many believe additive manufacturing may someday replace
subtractive manufacturing as part of the new industry 4.0, while other believe there is a place for both,
and indeed each are complementary technologies to one another.
Assessment task:
You will be required to produce a state-of-the-art literature survey on the topic of Additive
Manufacturing compared with Subtractive Manufacturing processes. In this report you will examine a
very brief historical context of both technologies, before exploring the similarities and differences in
each technology. Attention should be paid to the digital interface of each technology, drawing upon
the elements discussed in both the lecture and practical sessions. Your report should include but not
be limited to discussions of
• The relevance of part digitisation and it implications on the design and evaluation process
• Limitations on what can and cannot be realised by design
• Manufacturing similarities and constraints
• Material processing capabilities
• Manufacturing complexity and ease of use
• Variations of technological platforms
• Performance based metrics – Resolution, quality, production time, multiplexing, etc
You will need to refer to peer reviewed literature (e.g. journal papers, textbooks, technical standards)
to collate and report most of your information. You are discouraged from using ‘weak’ references
such as web forum/discussion groups, and other subjective sources.
Writing the Report:
It is highly recommended when writing the report you apply the same rules and guidelines to
structuring, formatting and writing used in Assessment Task 1 for the machinability paper. You are
welcome to use the recommended title template below as a guide to structuring your paper.
Recommended Assignment Template
1.0 Introduction
2.0 Traditional manufacturing processes
3.0 Additive Manufacturing processes
4.0 Additive Vs Traditional Manufacturing
5.0 Conclusion
6.0 References
Your report should be minimum of 2000 words (excluding references). It should not exceed 2500 words.
This is an individual submission, this paper must be written in your words. Do not copy and paste large
paragraphs from literature straight into your paper, instead you are strongly encourage to
paraphrase, i.e. re‐write the text in your own words. You must also clearly check the spelling and
grammar of your own work. Any detected written work which has been poorly written, will be given a
poor grade. A quick online guide on summarising, paraphrasing and quoting which you will find
extremely useful, can be found in the following link.
Any references used should be cited using an approved style and avoiding plagiarism (see link below).
This means you are expected to write the assignment in your words, and not use those of the references
you find. Students are encouraged to work together, however, ALL work submitted must be written in
the individual students own words. Turnitin software will be used on all assignment submissions.
Note: Assignments should be uploaded either as word docs or pdf’s to the appropriate dropbox on