Simulation of Tropical Hardwood Processing – Sawing Methods, Log Positioning, and Outer Shape
To increase understanding of breakdown strategies for Mozambican timber, simulations were carried out using different sawing patterns that can be alternatives to the low degree of refinement performed for export today. For the simulations, 3D models of 10 Jambirre and 5 Umbila logs were used. The lo...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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North Carolina State University
2015-09-01
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| Series: | BioResources |
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| Online Access: | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_4_7640_Shenga_Tropical_Hardwood_Processing |
| _version_ | 1828341267161939968 |
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| author | Pedro Ah Shenga Peter Bomark Olof Broman Dick Sandberg |
| author_facet | Pedro Ah Shenga Peter Bomark Olof Broman Dick Sandberg |
| author_sort | Pedro Ah Shenga |
| collection | DOAJ |
| description | To increase understanding of breakdown strategies for Mozambican timber, simulations were carried out using different sawing patterns that can be alternatives to the low degree of refinement performed for export today. For the simulations, 3D models of 10 Jambirre and 5 Umbila logs were used. The log shape was described as a point cloud and was acquired by 3D-laser scanning of real logs. Three sawing patterns (cant-sawing, through-and-through sawing, and square-sawing) were studied in combination with the log positioning variables skew and rotation. The results showed that both positioning and choice of sawing pattern had a great influence on the volume yield. The results also showed that the log grade had an impact on the sawing pattern that should be used for a high volume yield. The volume yield could be increased by 3 percentage points by choosing alternative sawing patterns for fairly straight logs and by 6 percentage points for crooked logs, compared to the worst choice of sawing pattern. |
| first_indexed | 2024-04-13T23:10:14Z |
| format | Article |
| id | doaj.art-f2148aeb7d184eeabf1b42d73ae821b8 |
| institution | Directory Open Access Journal |
| issn | 1930-2126 1930-2126 |
| language | English |
| last_indexed | 2024-04-13T23:10:14Z |
| publishDate | 2015-09-01 |
| publisher | North Carolina State University |
| record_format | Article |
| series | BioResources |
| spelling | doaj.art-f2148aeb7d184eeabf1b42d73ae821b82022-12-22T02:25:36ZengNorth Carolina State UniversityBioResources1930-21261930-21262015-09-011047640765210.15376/biores.10.4.7640-7652Simulation of Tropical Hardwood Processing – Sawing Methods, Log Positioning, and Outer ShapePedro Ah Shenga0Peter Bomark1Olof Broman2Dick Sandberg3Luleå University of Technology; SwedenLuleå University of Technology; SwedenLuleå University of Technology; SwedenLuleå University of Technology, Wood Science and Engineering, SE-931 87, Skellefteå, Sweden; SwedenTo increase understanding of breakdown strategies for Mozambican timber, simulations were carried out using different sawing patterns that can be alternatives to the low degree of refinement performed for export today. For the simulations, 3D models of 10 Jambirre and 5 Umbila logs were used. The log shape was described as a point cloud and was acquired by 3D-laser scanning of real logs. Three sawing patterns (cant-sawing, through-and-through sawing, and square-sawing) were studied in combination with the log positioning variables skew and rotation. The results showed that both positioning and choice of sawing pattern had a great influence on the volume yield. The results also showed that the log grade had an impact on the sawing pattern that should be used for a high volume yield. The volume yield could be increased by 3 percentage points by choosing alternative sawing patterns for fairly straight logs and by 6 percentage points for crooked logs, compared to the worst choice of sawing pattern.http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_4_7640_Shenga_Tropical_Hardwood_ProcessingPositioningYieldValueSaw methodMillettia stuhlmanniiPterocarpus angolensis |
| spellingShingle | Pedro Ah Shenga Peter Bomark Olof Broman Dick Sandberg Simulation of Tropical Hardwood Processing – Sawing Methods, Log Positioning, and Outer Shape BioResources Positioning Yield Value Saw method Millettia stuhlmannii Pterocarpus angolensis |
| title | Simulation of Tropical Hardwood Processing – Sawing Methods, Log Positioning, and Outer Shape |
| title_full | Simulation of Tropical Hardwood Processing – Sawing Methods, Log Positioning, and Outer Shape |
| title_fullStr | Simulation of Tropical Hardwood Processing – Sawing Methods, Log Positioning, and Outer Shape |
| title_full_unstemmed | Simulation of Tropical Hardwood Processing – Sawing Methods, Log Positioning, and Outer Shape |
| title_short | Simulation of Tropical Hardwood Processing – Sawing Methods, Log Positioning, and Outer Shape |
| title_sort | simulation of tropical hardwood processing sawing methods log positioning and outer shape |
| topic | Positioning Yield Value Saw method Millettia stuhlmannii Pterocarpus angolensis |
| url | http://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_10_4_7640_Shenga_Tropical_Hardwood_Processing |
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