Final Presentation

Dr. Nathan Hartman Associate Professor of Computer Graphics Technology Director, Purdue University PLM Center of Excellence Director of Strategic Research Area in Advanced Manufacturing, College of

Technology

Professor Timothy Ropp Assistant Professor of Aviation Technology

“Each year $300 billion is spent on plant maintenance and operation by YS industry, and 80% of this is spent to correct the chronic failures of machines, systems, and people (Dhillon, B.S., 2006).”

“The majority of all aviation maintenance incidents and

accidents are the result of human error (Human factors in aviation, 2011).”

Current aircraft maintenance work instructions do not display the best form of visual information to enable adequate communication in the form of technical information and work instruction.

Assembly Required

Plain Mechanics

Flight Check Technology

3D models are easier to visualize than mechanical drawings (Carvajal, A., 2005)

“The tablets showed strong performance for reading and annotation. Users liked the freedom to rearrange the tablets, pick them up, and move them around in a manner analogous to paper (Brush, A.J., Meyers, B., Morris, M., 2007).”

Mobile: A hand-held portable touch screen device with sustainable battery life.

Error: Tasks skipped/omitted completely from those contained within the work

instructions (i.e. failure to reinstall a fastener) Tasks performed out of sequence from that listed on the work instructions Tasks followed but incorrectly performed (improper safety wire application or

improper refitting of tubing, lock ring etc.) Hopefully that helps

Air Conditioning Water Separator

Take measurements of part Model assembly in Catia Save files as .wrl Import to Cortona3D Create simulation Upload files to Cortona3D viewer iPad

application

Catia Had capabilities we needed to create our model and file

types Expertise with the software

Cortona3D Mobile integration Faster task completion (Flight Check Technologies) Future Teamcenter integration

iPad 2 Cortona3D application

Subjects were Aviation Technology and Aeronautical Engineering Technology Students Experience with aviation maintenance Previous use of paper task cards Potentially will use our product in the future

Only one test at a time 28 participants 20-30 minutes per test subject

Hangar 6 schedule FAA certified maintenance technicians were

unavailable

Participants who went step-by-step performed better

Most participants watched the simulation

and ignored the text iPad users tended to look ahead more When errors were made the subject would

realize them and correct the mistake

14:25

16:31

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2:24

4:48

7:12

9:36

12:00

14:24

16:48

19:12

iPad Computer

Average Time For Completion (Minutes)

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iPad Computer

Cumulative Errors Made Throughout Testing

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Mental Demand Physical Demand TemporalDemand

Performance Effort Frustration

NASA-TLX Mental Workload Averages

iPad

Computer

Mental workload differences were statistically insignificant

Time for completion difference was just shy

of statistical significance (iPad being faster) The number of errors made on the iPad was

statistically significant

“It makes life easier.” “I hope this is where things are going. This is awesome.” “Seeing the task completed visually is very helpful to me.” “The visual depiction of the task alleviates any question as to

what part or fastener needs to be removed.”

“Much easier to understand”

“The simulation makes it so easy that I don’t even have to think about what I’m doing.”

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iPad Computer

Cumulative Errors Made Throughout Testing

Tactile Feedback

iPad experience

Tool vs. Toy

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NASA-TLX Mental Workload Averages

iPad

Computer

Pause at the end of every step so the users do not have to pause

and play each step/task. Having voice audio of the step description. Text needs to be bigger. Initial image or video showing where the item is located the

aircraft.

Warning labels for any potentially hazardous situations

NX/Teamcenter integration Hangar of the Future integration

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