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木材

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Stress–strain curve for low-carbon steel. Hooke's law (see above) is only valid for the portion of the curve between the origin and the yield point (2). Ultimate strengthYield strength (yield point)RuptureStrain hardening regionNecking region Apparent stress (F/A0)Actual stress (F/A) (viewtalkedit)

構造材料の特性と選定建築・土木における主要素材の比較

構造材料建築素材鋼材コンクリート
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Diagram of secondary growth in a tree showing idealized vertical and horizontal sections. A new layer of wood is added in each growing season, thickening the stem, existing branches and roots, to form a growth ring.

木材の科学と特性構造から産業利用まで

木材年輪心材辺材
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