Stem modeling and simulation of conversion of cork oak stems for quality wood products

Sofia Knapic (Corresponding Author), Isabel Pinto-Seppä, Arto Usenius, H. Pereira

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)


Recent research is underway to study cork oak (Quercus suber L.) wood potential for production of wood components. A total of 35 stems of young and mature cork oaks were sampled, live sawn into flitches, scanned using VTT’s WoodCIM®, and the measured data computed by VTT’s PuuPilot software, allowing stem 3D reconstruction. Sawing simulations were run for 0.5 m and 1 m logs and the whole stem. Sawn products were (1) planks, (2) parquet, (3) lamparquet, and (4) external component of multilayer planks. Cork oak stems showed a moderate to small taper (mean 24 mm/m). Curviness varied between straight to significantly crooked stems (mean value 40 mm) Batch yields for the tested products ranged 25–43% and 37–50% for 0.5 m logs of young and mature trees, respectively; for 1 m logs, batch yields ranged 19–41% and 25–54%. When using the whole stem, batch yields were lower, ranging 11–38% and 15–50%. Higher yields were obtained for all log lengths and samples for production of lamparquet, parquet, and multilayer component.
Original languageEnglish
Pages (from-to)745-751
Number of pages7
JournalEuropean Journal of Forest Research
Issue number5
Publication statusPublished - 2011
MoE publication typeA1 Journal article-refereed


  • 3D stem models
  • cork oak
  • sawing simulation
  • stem quality
  • wood conversion
  • wood flooring

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