Fatigue properties under cyclic non-linear in bending were examined at room temperature for laminated wood with resorcinol resin adhesive (RF) and aqueous-polymer-isocyanate resin adhesive (API). The change of both the relative stress (σ/σ
0) and temperature rising (Δ
T) which was measured at the point of the maximum temperature rising depended upon mechanical properties of adhesives in a neutral layer of specimens. This is because, for laminated wood with API, an adhesive layer causes heating by cyclic deflection so that the stress in a neutral layer decreases, while, for RF, such heating does not cause. It was found that the peak of Δ
T related to fatigue life. Both (σ/σ
0)
p and (σ/σ
0)
b are linear to the peak temperature Δ
Tp, and more the logarithmic cyclic number to failure, log
Nb, is linear to the logarithmic cyclic number to the peak of Δ
T, logN
p.
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