VALID
发表于 2025-3-23 10:02:37
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Goblet-Cells
发表于 2025-3-23 15:11:16
Pekka Pyykkö–. Especially, the origin of scratch groove formation has little been understood. The formation of scratch groove is probably related to microscopic fracture, plastic deformation, and material removal. The scratch test surely gives us some important information on the damageability of glasses with v
倔强一点
发表于 2025-3-23 21:32:05
Pekka Pyykköd stable crack extension, asymmetric extension and stick-slip extension. After a brief development of the indentation fracture model, . observations of indentation crack extension in a set of cordierite glass-ceramic composites and a polycrystalline alumina are presented and examined in terms of var
endure
发表于 2025-3-23 22:17:16
Pekka Pyykköon-compression fatigue..All the materials showed a clear cyclic fatigue effect, i.e. the cyclic crack growth rates were higher and the cyclic fatigue lives shorter than the corresponding static fatigue crack growth rates and fatigue lives. Such effect was discussed in terms of degradation of the act
Meditative
发表于 2025-3-24 02:35:44
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Vulnerable
发表于 2025-3-24 08:53:34
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nugatory
发表于 2025-3-24 11:17:26
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G-spot
发表于 2025-3-24 15:35:37
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并入
发表于 2025-3-24 19:13:21
Pekka Pyykkö their interaction with the polymer. Accordingly, morphological investigations and micromechanical models are shown to be key factors for understanding the dynamic crack growth of filler-reinforced elastomers and high performance rubber blends. The non-linear dynamic behaviour is intensively studied
invade
发表于 2025-3-24 23:25:18
Pekka Pyykköat high temperatures. SiC dispersions with average particle sizes of 2 and 8 ym were used to form 2 composite series, containing 1.25 to 30 vol% of the dispersed phase. These composites were fabricated by hot-pressing. Hardness, fracture toughness and strength were measured from room temperature to