Hardness distribution on wood surface

Seiji Hirata, Masamitsu Ohta, Yasuo Honma

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)


For better understanding wood hardness, we developed a new hand-operated hardness tester that works with Brinell's method. With this tester we investigated the hardness distribution of wood minutely using a 2mm diameter ball tip. The following results were obtained: (1) On preliminary examination with medium-density fiberboard, we found that the value of Brinell's hardness decreased with the increase in the tip ball's diameter but that it was almost constant with the indenting velocity. (2) By using a small diameter tip, the difference of the hardness became clearer between earlywood and latewood. (3) With radial and tangential sections, we obtained hardness distribution patterns similar to those of wood grain. It seems that the hardness distribution reflects the distribution of density on wood surfaces.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalJournal of Wood Science
Issue number1
Publication statusPublished - Dec 1 2001
Externally publishedYes


  • Ball diameter
  • Brinell's hardness
  • Handy-type tester
  • Two-dimensional distribution

ASJC Scopus subject areas

  • Biomaterials


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