1 / 12

IE 327 Introduction to Work Design Dr. Andris Freivalds Class #26

IE 327 Introduction to Work Design Dr. Andris Freivalds Class #26. Ch. 18 – Learning Curves. Install New Method (5 th step in Methods) Training operators in new method “Learn-on-the-job” approach Simple written instructions Pictorial instructions Videotapes

yosefu
Download Presentation

IE 327 Introduction to Work Design Dr. Andris Freivalds Class #26

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. IE 327 Introduction to Work Design Dr. Andris Freivalds Class #26 IE 327

  2. Ch. 18 – Learning Curves • Install New Method (5th step in Methods) • Training operators in new method • “Learn-on-the-job” approach • Simple written instructions • Pictorial instructions • Videotapes • Physical training, simulators • Account for learning curve – improve over time IE 327

  3. Learning Curve - 1 As #cycles doubles, cycle time ↓ by constant % IE 327

  4. Learning Curve - 2 IE 327

  5. Learning Curve - 3 IE 327

  6. Learning Curve - 4 • Power curve: y = kxn • Take log • Solve for n (slope) • Solve for k • Final eq.: IE 327

  7. Learning Curve - 5 • % learning = 2n • n = log (learn ratio) log 2 • Typical %learning: • Large assembly: 70-80% • Welding: 80-90% • Machining: 90-95% IE 327

  8. Learning Curve - 6 • When is std. time of 2 min. achieved? IE 327

  9. Learning Curve - 7 • How long do 262 cycles take? • Total time = k[(x2+½)n+1 – (x1-½)n+1]/(n+1) IE 327

  10. Ex. 18-1 • Given two points, find learning curve (50th cycle = 20 min, 100th cycle = 15 min) • What is %learning? IE 327

  11. Ex. 18-1 con’t • How many cycles to reach std. time of 10 min? IE 327

  12. Ex. 18-1 con’t • How long do 265 cycles take? • Average cycle time = • Use DesignTools!!! IE 327

More Related