A t raining and op timization system for log saw ing
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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.

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A T raining and OP timization System for Log SAW ing

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A t raining and op timization system for log saw ing

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


Defect identification on cross sectional views

Defect Identification on Cross-sectional Views


Results of replication of log 3

Results of Replication of Log #3


Details of the seven red oak logs scanned

Details of the seven red oak logs scanned


Comparison between sawmill and simulation results

Comparison between sawmill and simulation results


Challenges for the internal defect based sawing optimization system

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


A t raining and op timization system for log saw ing

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


Optimal cutting sequence

Optimal Cutting Sequence

  • Cut No.ThicknessVolumeGradeValue (in inches) (in board feet) ($)

  • 1 4/4 6.5 1C 4.00

  • 2 5/4 12.9 FAS12.77

  • 3 6/4 17.4 1C14.09

  • 4 8/4 26.0 1C21.73

  • 5 6/4 20.0 1C16.26

  • 6 6/4 18.8 1C15.21

  • 7 5/4 14.3 FAS15.54

  • 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


Results related to log 3

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)


A comparison between live sawing optimization and sawmill production

A comparison between live sawing optimization and sawmill production

  • Log Live sawingSawmill

  • 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%


A comparison between live sawing and bi directional sawing optimization

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%


Why we need topsaw

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


A t raining and op timization system for log saw ing

  • 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.


Only the paranoid survives

Only the Paranoid survives

  • Our competitors also recognize that, particularly our Canadian friends up north.


Only the paranoid survives1

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.


A t raining and op timization system for log saw ing

  • 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.


A t raining and op timization system for log saw ing

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


A t raining and op timization system for log saw ing

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


Hardwood sawing technology center

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


A t raining and op timization system for log saw ing

  • Cost over 4 years

  • With sawmill equipments

    $3.5 million

  • Without sawmill equipments

    $2.5 million


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