1 / 40

A T raining and OP timization System for Log SAW ing

T O P S A W. A T raining and OP timization System for Log SAW ing. Sun Joseph Chang School of Renewable Natural Resources Louisiana State University Agricultural Center Baton Rouge, LA 70803 . Defect Identification on Cross-sectional Views. Results of Replication of Log #3.

elu
Download Presentation

A T raining and OP timization System for Log SAW ing

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. T O P S A W A Training and OPtimization System for Log SAWing Sun Joseph Chang School of Renewable Natural Resources Louisiana State University Agricultural Center Baton Rouge, LA 70803

  2. Defect Identification on Cross-sectional Views

  3. Results of Replication of Log #3

  4. Details of the seven red oak logs scanned

  5. Comparison between sawmill and simulation results

  6. Challenges for the Internal Defect Based Sawing Optimization System • Hardware: A fast, more powerful, strong, durable, and low cost scanner • Software: A fast optimization software

  7. With a fast solution algorithm and smart programming, a real time optimization software has been developed

  8. Optimal Cutting Sequence • Cut No. Thickness Volume Grade Value (in inches) (in board feet) ($) • 1 4/4 6.5 1C 4.00 • 2 5/4 12.9 FAS 12.77 • 3 6/4 17.4 1C 14.09 • 4 8/4 26.0 1C 21.73 • 5 6/4 20.0 1C 16.26 • 6 6/4 18.8 1C 15.21 • 7 5/4 14.3 FAS 15.54 • 8 6/4 13.4 FAS 15.31 • 9 4/4 5.4 1C 3.31 • Total Volume 134.8 BF Total Value $118.22

  9. Results related to Log #3 • Sawmill production: $66.29 • TOPSAW replication: $64.57 • TOPSAW simulation: $91.32 (+ 37.8% over sawmill production) • TOPSAW optimization: $118.22 (+29.5% over simulation, +78.3% over sawmill production)

  10. A comparison between live sawing optimization and sawmill production • Log Live sawing Sawmill • Optimization Production • Log 1 $92.35 $84.20 • Log 2 $94.97 $69.91 • Log 3 $118.22 $66.29 • Log 5 $100.48 $64.81 • Log 6 $74.25 $32.42 • Log 7 $45.23 $59.44 • Log 8 $63.23 $41.81 • Average Gain 40.5%

  11. A Comparison between Live Sawing and Bi-directional Sawing Optimization • Log Live Sawing Bi-directional Sawing • Optimization Optimization • Log 1 $92.35 $93.94 • Log 2 $94.97 $107.7 • Log 3 $118.22 $122.73 • Log 5 $100.48 $107.9 • Log 6 $74.25 $74.8 • Log 7 $45.23 $53.6 • Log 8 $63.23 $71.3 • Average gain of bi-directional over live sawing 7.3%

  12. Why we need TOPSAW • Log cost accounts for about 60% of the hardwood lumber production cost based on the data of the 1997 Census of Manufactures

  13. increasing log conversion efficiency, therefore, produces a significant gain in lumber revenue and mill profit • It holds the key to the competitive advantage in the future.

  14. Only the Paranoid survives • Our competitors also recognize that, particularly our Canadian friends up north.

  15. Only the Paranoid Survives • Canadian softwood sawmills already have an edge over their U.S. counterparts. • Despite a 27% import tariff, Canadian softwood sawmills can still undercut domestic producers in the US market.

  16. In terms of hardwoods, over the last 10 years, US hardwood log exports doubled and Canada’s share of the export increased from 59% to 70%. As a result, more than ever US hardwood logs are sawn into lumber in Canada.

  17. Forintek Canada has embarked on a sawing optimization project similar to TOPSAW to establish firmly the competitive edge for the Canadian hardwood sawmill industry.

  18. It is time to establish a Hardwood Sawing Technology Center, make TOPSAW a reality, and regain the competitive edge.

  19. Hardwood Sawing Technology Center Goal: To commercialize TOPSAW in 3-4 years Objectives: • Develop a $5-600,000 per unit CT log scanner • Refine the optimization software • Develop a log set-up system to accurately and quickly orient and position the log for sawing

  20. Cost over 4 years • With sawmill equipments $3.5 million • Without sawmill equipments $2.5 million

More Related