Shojiro Ochiai

TL;DR: In this article, the parabolic Mohr failure criterion was applied to experimental results under different loading conditions and the results of the mechanical tests and a fractographic study of the fracture surfaces were correlated with the stress-state-dependent strength and fracture stress of the epoxy resin.

TL;DR: In this paper, the authors investigated the effect of the self-same epoxy interlayer on the interlaminar fracture properties under modes I and II loadings on the bases of the fractographic observations and mechanism considerations.

TL;DR: In this paper, the authors investigated the delamination fatigue crack growth behavior in carbon fiber (CF)/epoxy laminates with two kinds of interlayer/interleaf and found that the crack path shifted from the heterogeneous interlayer region (Stage I) to the inter-layer/base lamina interface (Stage II) with the increase of the crack length.

TL;DR: In this article, the impact and tensile properties of bulk ultrafine-grained (UFG) low-carbon steel bars were investigated by caliber rolling, and the effect of delamination on the impact properties was associated with crack propagation on the basis of the microstructural features in the rolled bars.

TL;DR: In this article, the authors investigated the rate dependence of interlaminar fracture behavior in unidirectional carbon-fibre/epoxy composite laminates over a wide range of loading rates from quasi-static (displacement rate, δ = 0.01-500 mm min−1) to impact (δ = 5-20 mm see−1).