Non-Disclosure Agreement: NO
Intellectual Property: YES
Physical Prototype or On-Campus Equipment: YES
Images and Additional Links (if provided)
Introduction and Background: The Aluminum Association represents aluminum production and jobs in the United States, ranging from primary production to value added products to recycling, as well as suppliers to the industry. As the industry’s leading voice in Washington, D.C., the Association provides global standards, business intelligence, trade policy and expert knowledge to member companies and policy makers nationwide while being committed to advancing aluminum as the prime sustainable metal of choice around the world. The Association’s Standards department develops and maintains technical standards and publications that aid the producers and customers of primary aluminum and aluminum alloy semi-fabrications (semi-fabrication: processes that transform aluminum into semi-finished intermediate products). One of our widely used “compendium” publications is Aluminum Standards & Data (AS&D), a derivative of the ANSI H35 standards series that contains multiple chapters’ worth of tolerancing data for semi-fabricated aluminum products among other things. AS&D is published in print and electronic formats with a dedicated version each employing U.S. customary units and metric units. These products are used in numerous applications across a wide range of industries including aerospace, automotive, and structural engineering. Standardization often demands the use of intricate criteria and methods to ensure repeatability and reproducibility of prescribed instructions, and to reduce ambiguity in interpretation. Standardization is a means for providing clear technical information and we are exploring how novel methods could be used to make them more user-friendly to the target audience. We have used illustrative examples and explanatory videos to aid the users of our standards to commendable effect. We are now looking to combine modern software tools and to engage sharp engineering minds to develop efficient, interactive ways to make technical standards intuitive and easy to master
Project Overview: The ultimate goal of this project is to continue the development of (or develop from scratch) an online calculator that can help users accurately determine what tolerances apply to the aluminum products they fabricate or purchase from a fabricator. As a starting point for this module of the project, we will deal with tolerances that apply to extruded wire, rod, bar and profiles fabricated using aluminum alloy-tempers, as illustrated by a series of tables in AS&D Chapter 11. Tolerances that apply may include dimensions (e.g., wall thickness, radius, etc.), straightness, flatness, angularity, twist, and more. Typically, for a specified thickness, width and/or diameter range, industry-established tolerance limits for each of these parameters can be determined from these tables. However, adding further complexity are multiple footnotes and conditions which define additional criteria that apply to each table and their elements within, making them an integral part of the tolerance calculation process. In Fall 2024 and Spring 2025, the Aluminum Tolerance Calculator teams (Phase I and II) at PSU’s Learning Factory worked on developing prototypes for table 11.2 that could accept geometric property and dimensional inputs of the cross-section of a part from the user and calculate tolerances that apply for that part, taking into account all the complexities of table 11.2 including its footnotes. These interim deliverables are currently stored on GitHub. The phase III team (Fall 2025) will inherit these deliverables and will be assigned the project of creating a complete and functioning web-based calculator program for AS&D Chapter 11 Table 11.2. If development goes well beyond expectations, a stretch goal would be to also incorporate Chapter 12 tables 12.2 and 12.20 into the calculator (similar in concept, but dealing specifically with diameters of pipes and tubes made by extrusion and drawing respectively) The Phase III team is encouraged to employ their creativity to refine and enhance the model developed by the prior team and/or to take it forward entirely in their own direction, provided that it stays on track to achieve the original objective of serving as a high fidelity digital representation of the material in AS&D. The expected outcome of this project is to create a helpful calculator resource that could be packaged with the publication itself or made available separately on our website. A more advanced challenge to augment to the project, purely optional, would be to develop a program that can analyze an imported 2D computer aided drawing of an extruded cross-section and subsequently recognize and recommend what tolerances apply for each of the geometric features of the cross-section based on table 11.2. The project team is encouraged to come up with their own solutions while capitalizing on the material developed by their predecessors. The best deliverables would be both easily editable to update with revised table values to keep up with revisions to the publications and easily expandable to include other tables and other product forms from AS&D.
Project Deliverables: A fully functional, web-hosted calculator program that can be used in conjunction with the tables in AS&D chapter 11 table 11.2 to interpret tolerances that apply to aluminum extrusions with both accuracy and efficiency. The resource/program should be capable of easy editing to accommodate revisions and easy expansion to include other AS&D tables and chapters in the future. Stretch goal 1: Expand the scope of the calculator to include tables 12.2 and 12.20. Stretch goal 2: Functionality to import 2D cross-sectional drawings of extrusions and recognize tolerances that apply. |